Update Linux to v5.10.109

Sourced from [1]

[1] https://cdn.kernel.org/pub/linux/kernel/v5.x/linux-5.10.109.tar.xz

Change-Id: I19bca9fc6762d4e63bcf3e4cba88bbe560d9c76c
Signed-off-by: Olivier Deprez <olivier.deprez@arm.com>
diff --git a/drivers/acpi/acpica/acapps.h b/drivers/acpi/acpica/acapps.h
index 863ade9..173447d 100644
--- a/drivers/acpi/acpica/acapps.h
+++ b/drivers/acpi/acpica/acapps.h
@@ -3,7 +3,7 @@
  *
  * Module Name: acapps - common include for ACPI applications/tools
  *
- * Copyright (C) 2000 - 2019, Intel Corp.
+ * Copyright (C) 2000 - 2020, Intel Corp.
  *
  *****************************************************************************/
 
@@ -17,7 +17,7 @@
 /* Common info for tool signons */
 
 #define ACPICA_NAME                 "Intel ACPI Component Architecture"
-#define ACPICA_COPYRIGHT            "Copyright (c) 2000 - 2019 Intel Corporation"
+#define ACPICA_COPYRIGHT            "Copyright (c) 2000 - 2020 Intel Corporation"
 
 #if ACPI_MACHINE_WIDTH == 64
 #define ACPI_WIDTH          " (64-bit version)"
diff --git a/drivers/acpi/acpica/accommon.h b/drivers/acpi/acpica/accommon.h
index 54f81ea..89101e5 100644
--- a/drivers/acpi/acpica/accommon.h
+++ b/drivers/acpi/acpica/accommon.h
@@ -3,7 +3,7 @@
  *
  * Name: accommon.h - Common include files for generation of ACPICA source
  *
- * Copyright (C) 2000 - 2019, Intel Corp.
+ * Copyright (C) 2000 - 2020, Intel Corp.
  *
  *****************************************************************************/
 
diff --git a/drivers/acpi/acpica/acconvert.h b/drivers/acpi/acpica/acconvert.h
index d5478cd..cf85d66 100644
--- a/drivers/acpi/acpica/acconvert.h
+++ b/drivers/acpi/acpica/acconvert.h
@@ -3,7 +3,7 @@
  *
  * Module Name: acapps - common include for ACPI applications/tools
  *
- * Copyright (C) 2000 - 2019, Intel Corp.
+ * Copyright (C) 2000 - 2020, Intel Corp.
  *
  *****************************************************************************/
 
@@ -65,9 +65,7 @@
 /*
  * cvparser
  */
-void
-cv_init_file_tree(struct acpi_table_header *table,
-		  u8 *aml_start, u32 aml_length);
+void cv_init_file_tree(struct acpi_table_header *table, FILE * root_file);
 
 void cv_clear_op_comments(union acpi_parse_object *op);
 
diff --git a/drivers/acpi/acpica/acdebug.h b/drivers/acpi/acpica/acdebug.h
index 32f2e38..f8a3abd 100644
--- a/drivers/acpi/acpica/acdebug.h
+++ b/drivers/acpi/acpica/acdebug.h
@@ -3,7 +3,7 @@
  *
  * Name: acdebug.h - ACPI/AML debugger
  *
- * Copyright (C) 2000 - 2019, Intel Corp.
+ * Copyright (C) 2000 - 2020, Intel Corp.
  *
  *****************************************************************************/
 
@@ -37,12 +37,14 @@
 struct acpi_db_execute_walk {
 	u32 count;
 	u32 max_count;
+	char name_seg[ACPI_NAMESEG_SIZE + 1];
 };
 
 #define PARAM_LIST(pl)                  pl
 
 #define EX_NO_SINGLE_STEP               1
 #define EX_SINGLE_STEP                  2
+#define EX_ALL                          4
 
 /*
  * dbxface - external debugger interfaces
@@ -124,6 +126,8 @@
 
 void acpi_db_evaluate_predefined_names(void);
 
+void acpi_db_evaluate_all(char *name_seg);
+
 /*
  * dbnames - namespace commands
  */
@@ -148,6 +152,8 @@
 
 void acpi_db_get_bus_info(void);
 
+acpi_status acpi_db_display_fields(u32 address_space_id);
+
 /*
  * dbdisply - debug display commands
  */
diff --git a/drivers/acpi/acpica/acdispat.h b/drivers/acpi/acpica/acdispat.h
index 82f8150..7ba6e30 100644
--- a/drivers/acpi/acpica/acdispat.h
+++ b/drivers/acpi/acpica/acdispat.h
@@ -3,7 +3,7 @@
  *
  * Name: acdispat.h - dispatcher (parser to interpreter interface)
  *
- * Copyright (C) 2000 - 2019, Intel Corp.
+ * Copyright (C) 2000 - 2020, Intel Corp.
  *
  *****************************************************************************/
 
diff --git a/drivers/acpi/acpica/acevents.h b/drivers/acpi/acpica/acevents.h
index c8652f9..79f2926 100644
--- a/drivers/acpi/acpica/acevents.h
+++ b/drivers/acpi/acpica/acevents.h
@@ -3,7 +3,7 @@
  *
  * Name: acevents.h - Event subcomponent prototypes and defines
  *
- * Copyright (C) 2000 - 2019, Intel Corp.
+ * Copyright (C) 2000 - 2020, Intel Corp.
  *
  *****************************************************************************/
 
diff --git a/drivers/acpi/acpica/acglobal.h b/drivers/acpi/acpica/acglobal.h
index fd3beea..bd84d7f 100644
--- a/drivers/acpi/acpica/acglobal.h
+++ b/drivers/acpi/acpica/acglobal.h
@@ -3,7 +3,7 @@
  *
  * Name: acglobal.h - Declarations for global variables
  *
- * Copyright (C) 2000 - 2019, Intel Corp.
+ * Copyright (C) 2000 - 2020, Intel Corp.
  *
  *****************************************************************************/
 
@@ -42,6 +42,12 @@
 ACPI_GLOBAL(struct acpi_generic_address, acpi_gbl_xpm1b_status);
 ACPI_GLOBAL(struct acpi_generic_address, acpi_gbl_xpm1b_enable);
 
+#ifdef ACPI_GPE_USE_LOGICAL_ADDRESSES
+ACPI_GLOBAL(unsigned long, acpi_gbl_xgpe0_block_logical_address);
+ACPI_GLOBAL(unsigned long, acpi_gbl_xgpe1_block_logical_address);
+
+#endif				/* ACPI_GPE_USE_LOGICAL_ADDRESSES */
+
 /*
  * Handle both ACPI 1.0 and ACPI 2.0+ Integer widths. The integer width is
  * determined by the revision of the DSDT: If the DSDT revision is less than
@@ -220,6 +226,8 @@
     acpi_gbl_bit_register_info[ACPI_NUM_BITREG];
 ACPI_GLOBAL(u8, acpi_gbl_sleep_type_a);
 ACPI_GLOBAL(u8, acpi_gbl_sleep_type_b);
+ACPI_GLOBAL(u8, acpi_gbl_sleep_type_a_s0);
+ACPI_GLOBAL(u8, acpi_gbl_sleep_type_b_s0);
 
 /*****************************************************************************
  *
@@ -290,6 +298,7 @@
 #ifdef ACPI_DEBUGGER
 ACPI_INIT_GLOBAL(u8, acpi_gbl_abort_method, FALSE);
 ACPI_INIT_GLOBAL(acpi_thread_id, acpi_gbl_db_thread_id, ACPI_INVALID_THREAD_ID);
+ACPI_INIT_GLOBAL(u32, acpi_gbl_next_cmd_num, 1);
 
 ACPI_GLOBAL(u8, acpi_gbl_db_opt_no_ini_methods);
 ACPI_GLOBAL(u8, acpi_gbl_db_opt_no_region_support);
diff --git a/drivers/acpi/acpica/achware.h b/drivers/acpi/acpica/achware.h
index c0e2436..6ab92e2 100644
--- a/drivers/acpi/acpica/achware.h
+++ b/drivers/acpi/acpica/achware.h
@@ -3,7 +3,7 @@
  *
  * Name: achware.h -- hardware specific interfaces
  *
- * Copyright (C) 2000 - 2019, Intel Corp.
+ * Copyright (C) 2000 - 2020, Intel Corp.
  *
  *****************************************************************************/
 
@@ -73,9 +73,15 @@
 
 acpi_status acpi_hw_write_port(acpi_io_address address, u32 value, u32 width);
 
+acpi_status acpi_hw_validate_io_block(u64 address, u32 bit_width, u32 count);
+
 /*
  * hwgpe - GPE support
  */
+acpi_status acpi_hw_gpe_read(u64 *value, struct acpi_gpe_address *reg);
+
+acpi_status acpi_hw_gpe_write(u64 value, struct acpi_gpe_address *reg);
+
 u32 acpi_hw_get_gpe_register_bit(struct acpi_gpe_event_info *gpe_event_info);
 
 acpi_status
diff --git a/drivers/acpi/acpica/acinterp.h b/drivers/acpi/acpica/acinterp.h
index 20706ad..a6d896c 100644
--- a/drivers/acpi/acpica/acinterp.h
+++ b/drivers/acpi/acpica/acinterp.h
@@ -3,7 +3,7 @@
  *
  * Name: acinterp.h - Interpreter subcomponent prototypes and defines
  *
- * Copyright (C) 2000 - 2019, Intel Corp.
+ * Copyright (C) 2000 - 2020, Intel Corp.
  *
  *****************************************************************************/
 
diff --git a/drivers/acpi/acpica/aclocal.h b/drivers/acpi/acpica/aclocal.h
index 1ea5257..f83b98f 100644
--- a/drivers/acpi/acpica/aclocal.h
+++ b/drivers/acpi/acpica/aclocal.h
@@ -3,7 +3,7 @@
  *
  * Name: aclocal.h - Internal data types used across the ACPI subsystem
  *
- * Copyright (C) 2000 - 2019, Intel Corp.
+ * Copyright (C) 2000 - 2020, Intel Corp.
  *
  *****************************************************************************/
 
@@ -454,11 +454,18 @@
 	u8 disable_for_dispatch;	/* Masked during dispatching */
 };
 
+/* GPE register address */
+
+struct acpi_gpe_address {
+	u8 space_id;	/* Address space where the register exists */
+	u64 address;	/* 64-bit address of the register */
+};
+
 /* Information about a GPE register pair, one per each status/enable pair in an array */
 
 struct acpi_gpe_register_info {
-	struct acpi_generic_address status_address;	/* Address of status reg */
-	struct acpi_generic_address enable_address;	/* Address of enable reg */
+	struct acpi_gpe_address status_address;	/* Address of status reg */
+	struct acpi_gpe_address enable_address;	/* Address of enable reg */
 	u16 base_gpe_number;	/* Base GPE number for this register */
 	u8 enable_for_wake;	/* GPEs to keep enabled when sleeping */
 	u8 enable_for_run;	/* GPEs to keep enabled when running */
diff --git a/drivers/acpi/acpica/acmacros.h b/drivers/acpi/acpica/acmacros.h
index 283614e..168904b 100644
--- a/drivers/acpi/acpica/acmacros.h
+++ b/drivers/acpi/acpica/acmacros.h
@@ -3,7 +3,7 @@
  *
  * Name: acmacros.h - C macros for the entire subsystem.
  *
- * Copyright (C) 2000 - 2019, Intel Corp.
+ * Copyright (C) 2000 - 2020, Intel Corp.
  *
  *****************************************************************************/
 
@@ -477,7 +477,7 @@
 #define ASL_CV_PRINT_ONE_COMMENT(a,b,c,d) cv_print_one_comment_type (a,b,c,d);
 #define ASL_CV_PRINT_ONE_COMMENT_LIST(a,b) cv_print_one_comment_list (a,b);
 #define ASL_CV_FILE_HAS_SWITCHED(a)       cv_file_has_switched(a)
-#define ASL_CV_INIT_FILETREE(a,b,c)      cv_init_file_tree(a,b,c);
+#define ASL_CV_INIT_FILETREE(a,b)      cv_init_file_tree(a,b);
 
 #else
 
@@ -492,7 +492,7 @@
 #define ASL_CV_PRINT_ONE_COMMENT(a,b,c,d)
 #define ASL_CV_PRINT_ONE_COMMENT_LIST(a,b)
 #define ASL_CV_FILE_HAS_SWITCHED(a)       0
-#define ASL_CV_INIT_FILETREE(a,b,c)
+#define ASL_CV_INIT_FILETREE(a,b)
 
 #endif
 
diff --git a/drivers/acpi/acpica/acnamesp.h b/drivers/acpi/acpica/acnamesp.h
index ecaa287..40f6a3c 100644
--- a/drivers/acpi/acpica/acnamesp.h
+++ b/drivers/acpi/acpica/acnamesp.h
@@ -3,7 +3,7 @@
  *
  * Name: acnamesp.h - Namespace subcomponent prototypes and defines
  *
- * Copyright (C) 2000 - 2019, Intel Corp.
+ * Copyright (C) 2000 - 2020, Intel Corp.
  *
  *****************************************************************************/
 
diff --git a/drivers/acpi/acpica/acobject.h b/drivers/acpi/acpica/acobject.h
index b0b9bb3..dd7efaf 100644
--- a/drivers/acpi/acpica/acobject.h
+++ b/drivers/acpi/acpica/acobject.h
@@ -3,7 +3,7 @@
  *
  * Name: acobject.h - Definition of union acpi_operand_object  (Internal object only)
  *
- * Copyright (C) 2000 - 2019, Intel Corp.
+ * Copyright (C) 2000 - 2020, Intel Corp.
  *
  *****************************************************************************/
 
@@ -260,7 +260,8 @@
 /* The buffer_field is different in that it is part of a Buffer, not an op_region */
 
 struct acpi_object_buffer_field {
-	ACPI_OBJECT_COMMON_HEADER ACPI_COMMON_FIELD_INFO union acpi_operand_object *buffer_obj;	/* Containing Buffer object */
+	ACPI_OBJECT_COMMON_HEADER ACPI_COMMON_FIELD_INFO u8 is_create_field;	/* Special case for objects created by create_field() */
+	union acpi_operand_object *buffer_obj;	/* Containing Buffer object */
 };
 
 /******************************************************************************
diff --git a/drivers/acpi/acpica/acopcode.h b/drivers/acpi/acpica/acopcode.h
index 9d78134..8825394 100644
--- a/drivers/acpi/acpica/acopcode.h
+++ b/drivers/acpi/acpica/acopcode.h
@@ -3,7 +3,7 @@
  *
  * Name: acopcode.h - AML opcode information for the AML parser and interpreter
  *
- * Copyright (C) 2000 - 2019, Intel Corp.
+ * Copyright (C) 2000 - 2020, Intel Corp.
  *
  *****************************************************************************/
 
diff --git a/drivers/acpi/acpica/acparser.h b/drivers/acpi/acpica/acparser.h
index 6e32c97..bc00b85 100644
--- a/drivers/acpi/acpica/acparser.h
+++ b/drivers/acpi/acpica/acparser.h
@@ -3,7 +3,7 @@
  *
  * Module Name: acparser.h - AML Parser subcomponent prototypes and defines
  *
- * Copyright (C) 2000 - 2019, Intel Corp.
+ * Copyright (C) 2000 - 2020, Intel Corp.
  *
  *****************************************************************************/
 
diff --git a/drivers/acpi/acpica/acpredef.h b/drivers/acpi/acpica/acpredef.h
index 387163b..57ea227 100644
--- a/drivers/acpi/acpica/acpredef.h
+++ b/drivers/acpi/acpica/acpredef.h
@@ -3,7 +3,7 @@
  *
  * Name: acpredef - Information table for ACPI predefined methods and objects
  *
- * Copyright (C) 2000 - 2019, Intel Corp.
+ * Copyright (C) 2000 - 2020, Intel Corp.
  *
  *****************************************************************************/
 
@@ -101,7 +101,7 @@
 
 /* Support macros for users of the predefined info table */
 
-#define METHOD_PREDEF_ARGS_MAX          4
+#define METHOD_PREDEF_ARGS_MAX          5
 #define METHOD_ARG_BIT_WIDTH            3
 #define METHOD_ARG_MASK                 0x0007
 #define ARG_COUNT_IS_MINIMUM            0x8000
@@ -117,6 +117,7 @@
 #define METHOD_2ARGS(a1,a2)             (2 | (a1 << 3) | (a2 << 6))
 #define METHOD_3ARGS(a1,a2,a3)          (3 | (a1 << 3) | (a2 << 6) | (a3 << 9))
 #define METHOD_4ARGS(a1,a2,a3,a4)       (4 | (a1 << 3) | (a2 << 6) | (a3 << 9) | (a4 << 12))
+#define METHOD_5ARGS(a1,a2,a3,a4,a5)    (5 | (a1 << 3) | (a2 << 6) | (a3 << 9) | (a4 << 12) | (a5 << 15))
 
 #define METHOD_RETURNS(type)            (type)
 #define METHOD_NO_RETURN_VALUE          0
@@ -640,10 +641,10 @@
 	{{"_NIC", METHOD_0ARGS,	/* ACPI 6.3 */
 	  METHOD_RETURNS(ACPI_RTYPE_BUFFER)}},
 
-	{{"_NIG", METHOD_1ARGS(ACPI_TYPE_BUFFER),	/* ACPI 6.3 */
+	{{"_NIG", METHOD_0ARGS, /* ACPI 6.3 */
 	  METHOD_RETURNS(ACPI_RTYPE_BUFFER)}},
 
-	{{"_NIH", METHOD_0ARGS,	/* ACPI 6.3 */
+	{{"_NIH", METHOD_1ARGS(ACPI_TYPE_BUFFER), /* ACPI 6.3 */
 	  METHOD_RETURNS(ACPI_RTYPE_BUFFER)}},
 
 	{{"_NTT", METHOD_0ARGS,
@@ -902,9 +903,39 @@
 	{{"_S4W", METHOD_0ARGS,
 	  METHOD_RETURNS(ACPI_RTYPE_INTEGER)}},
 
+	{{"_SBA", METHOD_0ARGS,
+	  METHOD_RETURNS(ACPI_RTYPE_PACKAGE)}},	/* Fixed-length (4 Int) */
+	PACKAGE_INFO(ACPI_PTYPE1_FIXED, ACPI_RTYPE_INTEGER, 4, 0, 0, 0),
+
+	{{"_SBI", METHOD_0ARGS,
+	  METHOD_RETURNS(ACPI_RTYPE_PACKAGE)}},	/* Fixed-length (1 Int, 1 Buf) */
+	PACKAGE_INFO(ACPI_PTYPE1_FIXED, ACPI_RTYPE_INTEGER, 1,
+		     ACPI_RTYPE_BUFFER, 1, 0),
+
+	{{"_SBR",
+	  METHOD_3ARGS(ACPI_TYPE_INTEGER, ACPI_TYPE_INTEGER,
+			ACPI_TYPE_INTEGER),
+	   METHOD_RETURNS(ACPI_RTYPE_PACKAGE)}},	/* Fixed-length (2 Int) */
+	PACKAGE_INFO(ACPI_PTYPE1_FIXED, ACPI_RTYPE_INTEGER, 2,
+		     ACPI_RTYPE_BUFFER | ACPI_RTYPE_INTEGER, 1, 0),
+
 	{{"_SBS", METHOD_0ARGS,
 	  METHOD_RETURNS(ACPI_RTYPE_INTEGER)}},
 
+	{{"_SBT",
+	  METHOD_4ARGS(ACPI_TYPE_INTEGER, ACPI_TYPE_INTEGER, ACPI_TYPE_INTEGER,
+			ACPI_TYPE_ANY),
+	   METHOD_RETURNS(ACPI_RTYPE_PACKAGE)}},	/* Fixed-length (2 Int, 1 Buf | Int) */
+	PACKAGE_INFO(ACPI_PTYPE1_FIXED, ACPI_RTYPE_INTEGER, 2,
+		     ACPI_RTYPE_BUFFER | ACPI_RTYPE_INTEGER, 1, 0),
+
+	{{"_SBW",
+	  METHOD_5ARGS(ACPI_TYPE_INTEGER, ACPI_TYPE_INTEGER, ACPI_TYPE_INTEGER,
+			ACPI_TYPE_INTEGER, ACPI_TYPE_ANY),
+	   METHOD_RETURNS(ACPI_RTYPE_PACKAGE)}},
+	PACKAGE_INFO(ACPI_PTYPE1_FIXED, ACPI_RTYPE_BUFFER | ACPI_RTYPE_INTEGER,
+		     1, 0, 0, 0),
+
 	{{"_SCP", METHOD_1ARGS(ACPI_TYPE_INTEGER) | ARG_COUNT_IS_MINIMUM,
 	  METHOD_NO_RETURN_VALUE}},	/* Acpi 1.0 allowed 1 integer arg. Acpi 3.0 expanded to 3 args. Allow both. */
 
diff --git a/drivers/acpi/acpica/acresrc.h b/drivers/acpi/acpica/acresrc.h
index 422cd8f..6de8a16 100644
--- a/drivers/acpi/acpica/acresrc.h
+++ b/drivers/acpi/acpica/acresrc.h
@@ -3,7 +3,7 @@
  *
  * Name: acresrc.h - Resource Manager function prototypes
  *
- * Copyright (C) 2000 - 2019, Intel Corp.
+ * Copyright (C) 2000 - 2020, Intel Corp.
  *
  *****************************************************************************/
 
diff --git a/drivers/acpi/acpica/acstruct.h b/drivers/acpi/acpica/acstruct.h
index 218ff4c..4c900c1 100644
--- a/drivers/acpi/acpica/acstruct.h
+++ b/drivers/acpi/acpica/acstruct.h
@@ -3,7 +3,7 @@
  *
  * Name: acstruct.h - Internal structs
  *
- * Copyright (C) 2000 - 2019, Intel Corp.
+ * Copyright (C) 2000 - 2020, Intel Corp.
  *
  *****************************************************************************/
 
@@ -192,6 +192,16 @@
 	u32 num_INI;
 };
 
+/* Info used by Acpi  acpi_db_display_fields */
+
+struct acpi_region_walk_info {
+	u32 debug_level;
+	u32 count;
+	acpi_owner_id owner_id;
+	u8 display_type;
+	u32 address_space_id;
+};
+
 /* TBD: [Restructure] Merge with struct above */
 
 struct acpi_walk_info {
diff --git a/drivers/acpi/acpica/actables.h b/drivers/acpi/acpica/actables.h
index dfbf1db..734624f 100644
--- a/drivers/acpi/acpica/actables.h
+++ b/drivers/acpi/acpica/actables.h
@@ -3,7 +3,7 @@
  *
  * Name: actables.h - ACPI table management
  *
- * Copyright (C) 2000 - 2019, Intel Corp.
+ * Copyright (C) 2000 - 2020, Intel Corp.
  *
  *****************************************************************************/
 
diff --git a/drivers/acpi/acpica/acutils.h b/drivers/acpi/acpica/acutils.h
index 601808b..7c89b47 100644
--- a/drivers/acpi/acpica/acutils.h
+++ b/drivers/acpi/acpica/acutils.h
@@ -3,7 +3,7 @@
  *
  * Name: acutils.h -- prototypes for the common (subsystem-wide) procedures
  *
- * Copyright (C) 2000 - 2019, Intel Corp.
+ * Copyright (C) 2000 - 2020, Intel Corp.
  *
  *****************************************************************************/
 
@@ -142,10 +142,11 @@
 
 /* acpi_ut_dump_buffer */
 
-#define DB_BYTE_DISPLAY     1
-#define DB_WORD_DISPLAY     2
-#define DB_DWORD_DISPLAY    4
-#define DB_QWORD_DISPLAY    8
+#define DB_BYTE_DISPLAY      0x01
+#define DB_WORD_DISPLAY      0x02
+#define DB_DWORD_DISPLAY     0x04
+#define DB_QWORD_DISPLAY     0x08
+#define DB_DISPLAY_DATA_ONLY 0x10
 
 /*
  * utascii - ASCII utilities
diff --git a/drivers/acpi/acpica/amlcode.h b/drivers/acpi/acpica/amlcode.h
index 49e412e..1d541bb 100644
--- a/drivers/acpi/acpica/amlcode.h
+++ b/drivers/acpi/acpica/amlcode.h
@@ -5,7 +5,7 @@
  *                   Declarations and definitions contained herein are derived
  *                   directly from the ACPI specification.
  *
- * Copyright (C) 2000 - 2019, Intel Corp.
+ * Copyright (C) 2000 - 2020, Intel Corp.
  *
  *****************************************************************************/
 
diff --git a/drivers/acpi/acpica/amlresrc.h b/drivers/acpi/acpica/amlresrc.h
index 7c3bd4a..e5234e0 100644
--- a/drivers/acpi/acpica/amlresrc.h
+++ b/drivers/acpi/acpica/amlresrc.h
@@ -3,7 +3,7 @@
  *
  * Module Name: amlresrc.h - AML resource descriptors
  *
- * Copyright (C) 2000 - 2019, Intel Corp.
+ * Copyright (C) 2000 - 2020, Intel Corp.
  *
  *****************************************************************************/
 
diff --git a/drivers/acpi/acpica/dbconvert.c b/drivers/acpi/acpica/dbconvert.c
index 9fd9a98..2b84ac0 100644
--- a/drivers/acpi/acpica/dbconvert.c
+++ b/drivers/acpi/acpica/dbconvert.c
@@ -106,6 +106,10 @@
 	u8 *buffer;
 	acpi_status status;
 
+	/* Skip all preceding white space */
+
+	acpi_ut_remove_whitespace(&string);
+
 	/* Generate the final buffer length */
 
 	for (i = 0, length = 0; string[i];) {
diff --git a/drivers/acpi/acpica/dbdisply.c b/drivers/acpi/acpica/dbdisply.c
index 30ab62b..d41eb9e 100644
--- a/drivers/acpi/acpica/dbdisply.c
+++ b/drivers/acpi/acpica/dbdisply.c
@@ -51,6 +51,8 @@
 	ACPI_ADR_SPACE_IPMI,
 	ACPI_ADR_SPACE_GPIO,
 	ACPI_ADR_SPACE_GSBUS,
+	ACPI_ADR_SPACE_PLATFORM_COMM,
+	ACPI_ADR_SPACE_PLATFORM_RT,
 	ACPI_ADR_SPACE_DATA_TABLE,
 	ACPI_ADR_SPACE_FIXED_HARDWARE
 };
@@ -513,7 +515,6 @@
 		return;
 	}
 
-	obj_desc = walk_state->method_desc;
 	node = walk_state->method_node;
 
 	if (walk_state->results) {
@@ -565,7 +566,6 @@
 		return;
 	}
 
-	node = walk_state->method_node;
 	acpi_os_printf("Current Control Method Call Tree\n");
 
 	while (walk_state) {
diff --git a/drivers/acpi/acpica/dbexec.c b/drivers/acpi/acpica/dbexec.c
index 4027eaa..d3a9521 100644
--- a/drivers/acpi/acpica/dbexec.c
+++ b/drivers/acpi/acpica/dbexec.c
@@ -86,7 +86,8 @@
  *
  * RETURN:      Status
  *
- * DESCRIPTION: Execute a control method.
+ * DESCRIPTION: Execute a control method. Used to evaluate objects via the
+ *              "EXECUTE" or "EVALUATE" commands.
  *
  ******************************************************************************/
 
@@ -314,11 +315,12 @@
 
 	status = acpi_evaluate_object(node, NULL, NULL, &return_obj);
 
+	acpi_gbl_method_executing = FALSE;
+
 	acpi_os_printf("Evaluation of [%4.4s] returned %s\n",
 		       acpi_ut_get_node_name(node),
 		       acpi_format_exception(status));
 
-	acpi_gbl_method_executing = FALSE;
 	return (AE_OK);
 }
 
@@ -334,7 +336,8 @@
  * RETURN:      None
  *
  * DESCRIPTION: Execute a control method. Name is relative to the current
- *              scope.
+ *              scope. Function used for the "EXECUTE", "EVALUATE", and
+ *              "ALL" commands
  *
  ******************************************************************************/
 
@@ -372,6 +375,12 @@
 		return;
 	}
 
+	if ((flags & EX_ALL) && (strlen(name) > 4)) {
+		acpi_os_printf("Input name (%s) must be a 4-char NameSeg\n",
+			       name);
+		return;
+	}
+
 	name_string = ACPI_ALLOCATE(strlen(name) + 1);
 	if (!name_string) {
 		return;
@@ -389,13 +398,24 @@
 		return;
 	}
 
-	acpi_gbl_db_method_info.name = name_string;
-	acpi_gbl_db_method_info.args = args;
-	acpi_gbl_db_method_info.types = types;
-	acpi_gbl_db_method_info.flags = flags;
+	/* Command (ALL <nameseg>) to execute all methods of a particular name */
 
-	return_obj.pointer = NULL;
-	return_obj.length = ACPI_ALLOCATE_BUFFER;
+	else if (flags & EX_ALL) {
+		acpi_gbl_db_method_info.name = name_string;
+		return_obj.pointer = NULL;
+		return_obj.length = ACPI_ALLOCATE_BUFFER;
+		acpi_db_evaluate_all(name_string);
+		ACPI_FREE(name_string);
+		return;
+	} else {
+		acpi_gbl_db_method_info.name = name_string;
+		acpi_gbl_db_method_info.args = args;
+		acpi_gbl_db_method_info.types = types;
+		acpi_gbl_db_method_info.flags = flags;
+
+		return_obj.pointer = NULL;
+		return_obj.length = ACPI_ALLOCATE_BUFFER;
+	}
 
 	status = acpi_db_execute_setup(&acpi_gbl_db_method_info);
 	if (ACPI_FAILURE(status)) {
@@ -450,6 +470,7 @@
 				       (u32)return_obj.length);
 
 			acpi_db_dump_external_object(return_obj.pointer, 1);
+			acpi_os_printf("\n");
 
 			/* Dump a _PLD buffer if present */
 
diff --git a/drivers/acpi/acpica/dbfileio.c b/drivers/acpi/acpica/dbfileio.c
index c6e2573..e1b6e54 100644
--- a/drivers/acpi/acpica/dbfileio.c
+++ b/drivers/acpi/acpica/dbfileio.c
@@ -93,7 +93,7 @@
 	while (table_list_head) {
 		table = table_list_head->table;
 
-		status = acpi_load_table(table);
+		status = acpi_load_table(table, NULL);
 		if (ACPI_FAILURE(status)) {
 			if (status == AE_ALREADY_EXISTS) {
 				acpi_os_printf
diff --git a/drivers/acpi/acpica/dbhistry.c b/drivers/acpi/acpica/dbhistry.c
index 47d2e50..f5fba14 100644
--- a/drivers/acpi/acpica/dbhistry.c
+++ b/drivers/acpi/acpica/dbhistry.c
@@ -3,7 +3,7 @@
  *
  * Module Name: dbhistry - debugger HISTORY command
  *
- * Copyright (C) 2000 - 2019, Intel Corp.
+ * Copyright (C) 2000 - 2020, Intel Corp.
  *
  *****************************************************************************/
 
@@ -27,7 +27,6 @@
 static u16 acpi_gbl_lo_history = 0;
 static u16 acpi_gbl_num_history = 0;
 static u16 acpi_gbl_next_history_index = 0;
-u32 acpi_gbl_next_cmd_num = 1;
 
 /*******************************************************************************
  *
diff --git a/drivers/acpi/acpica/dbinput.c b/drivers/acpi/acpica/dbinput.c
index 1ef0535..2952856 100644
--- a/drivers/acpi/acpica/dbinput.c
+++ b/drivers/acpi/acpica/dbinput.c
@@ -37,6 +37,7 @@
 enum acpi_ex_debugger_commands {
 	CMD_NOT_FOUND = 0,
 	CMD_NULL,
+	CMD_ALL,
 	CMD_ALLOCATIONS,
 	CMD_ARGS,
 	CMD_ARGUMENTS,
@@ -50,6 +51,7 @@
 	CMD_EVALUATE,
 	CMD_EXECUTE,
 	CMD_EXIT,
+	CMD_FIELDS,
 	CMD_FIND,
 	CMD_GO,
 	CMD_HANDLERS,
@@ -114,6 +116,7 @@
 static const struct acpi_db_command_info acpi_gbl_db_commands[] = {
 	{"<NOT FOUND>", 0},
 	{"<NULL>", 0},
+	{"ALL", 1},
 	{"ALLOCATIONS", 0},
 	{"ARGS", 0},
 	{"ARGUMENTS", 0},
@@ -127,6 +130,7 @@
 	{"EVALUATE", 1},
 	{"EXECUTE", 1},
 	{"EXIT", 0},
+	{"FIELDS", 1},
 	{"FIND", 1},
 	{"GO", 0},
 	{"HANDLERS", 0},
@@ -200,6 +204,8 @@
 	 "Find ACPI name(s) with wildcards\n"},
 	{1, "  Integrity", "Validate namespace integrity\n"},
 	{1, "  Methods", "Display list of loaded control methods\n"},
+	{1, "  Fields <AddressSpaceId>",
+	 "Display list of loaded field units by space ID\n"},
 	{1, "  Namespace [Object] [Depth]",
 	 "Display loaded namespace tree/subtree\n"},
 	{1, "  Notify <Object> <Value>", "Send a notification on Object\n"},
@@ -218,6 +224,7 @@
 	{1, "  Type <Object>", "Display object type\n"},
 
 	{0, "\nControl Method Execution:", "\n"},
+	{1, "  All <NameSeg>", "Evaluate all objects named NameSeg\n"},
 	{1, "  Evaluate <Namepath> [Arguments]",
 	 "Evaluate object or control method\n"},
 	{1, "  Execute <Namepath> [Arguments]", "Synonym for Evaluate\n"},
@@ -432,7 +439,7 @@
 		acpi_os_printf("\n");
 
 	} else {
-		/* Display help for all commands that match the subtring */
+		/* Display help for all commands that match the substring */
 
 		acpi_db_display_command_info(command, TRUE);
 	}
@@ -505,6 +512,21 @@
 		}
 		break;
 
+	case '{':
+
+		/* This is the start of a field unit, scan until closing brace */
+
+		string++;
+		start = string;
+		type = ACPI_TYPE_FIELD_UNIT;
+
+		/* Find end of buffer */
+
+		while (*string && (*string != '}')) {
+			string++;
+		}
+		break;
+
 	case '[':
 
 		/* This is the start of a package, scan until closing bracket */
@@ -672,6 +694,7 @@
 			 union acpi_parse_object *op)
 {
 	u32 temp;
+	u64 temp64;
 	u32 command_index;
 	u32 param_count;
 	char *command_line;
@@ -687,7 +710,6 @@
 
 	param_count = acpi_db_get_line(input_buffer);
 	command_index = acpi_db_match_command(acpi_gbl_db_args[0]);
-	temp = 0;
 
 	/*
 	 * We don't want to add the !! command to the history buffer. It
@@ -721,6 +743,15 @@
 		}
 		break;
 
+	case CMD_ALL:
+
+		acpi_os_printf("Executing all objects with NameSeg: %s\n",
+			       acpi_gbl_db_args[1]);
+		acpi_db_execute(acpi_gbl_db_args[1], &acpi_gbl_db_args[2],
+				&acpi_gbl_db_arg_types[2],
+				EX_NO_SINGLE_STEP | EX_ALL);
+		break;
+
 	case CMD_ALLOCATIONS:
 
 #ifdef ACPI_DBG_TRACK_ALLOCATIONS
@@ -788,6 +819,21 @@
 		status = acpi_db_find_name_in_namespace(acpi_gbl_db_args[1]);
 		break;
 
+	case CMD_FIELDS:
+
+		status = acpi_ut_strtoul64(acpi_gbl_db_args[1], &temp64);
+
+		if (ACPI_FAILURE(status)
+		    || temp64 >= ACPI_NUM_PREDEFINED_REGIONS) {
+			acpi_os_printf
+			    ("Invalid address space ID: must be between 0 and %u inclusive\n",
+			     ACPI_NUM_PREDEFINED_REGIONS - 1);
+			return (AE_OK);
+		}
+
+		status = acpi_db_display_fields((u32)temp64);
+		break;
+
 	case CMD_GO:
 
 		acpi_gbl_cm_single_step = FALSE;
diff --git a/drivers/acpi/acpica/dbmethod.c b/drivers/acpi/acpica/dbmethod.c
index 76a15b6..889d138 100644
--- a/drivers/acpi/acpica/dbmethod.c
+++ b/drivers/acpi/acpica/dbmethod.c
@@ -21,6 +21,8 @@
 acpi_db_walk_for_execute(acpi_handle obj_handle,
 			 u32 nesting_level, void *context, void **return_value);
 
+static acpi_status acpi_db_evaluate_object(struct acpi_namespace_node *node);
+
 /*******************************************************************************
  *
  * FUNCTION:    acpi_db_set_method_breakpoint
@@ -321,6 +323,10 @@
 	walk_state->parse_flags |= ACPI_PARSE_DISASSEMBLE;
 
 	status = acpi_ps_parse_aml(walk_state);
+	if (ACPI_FAILURE(status)) {
+		return (status);
+	}
+
 	(void)acpi_dm_parse_deferred_ops(op);
 
 	/* Now we can disassemble the method */
@@ -342,42 +348,26 @@
 
 /*******************************************************************************
  *
- * FUNCTION:    acpi_db_walk_for_execute
+ * FUNCTION:    acpi_db_evaluate_object
  *
- * PARAMETERS:  Callback from walk_namespace
+ * PARAMETERS:  node                - Namespace node for the object
  *
  * RETURN:      Status
  *
- * DESCRIPTION: Batch execution module. Currently only executes predefined
- *              ACPI names.
+ * DESCRIPTION: Main execution function for the Evaluate/Execute/All debugger
+ *              commands.
  *
  ******************************************************************************/
 
-static acpi_status
-acpi_db_walk_for_execute(acpi_handle obj_handle,
-			 u32 nesting_level, void *context, void **return_value)
+static acpi_status acpi_db_evaluate_object(struct acpi_namespace_node *node)
 {
-	struct acpi_namespace_node *node =
-	    (struct acpi_namespace_node *)obj_handle;
-	struct acpi_db_execute_walk *info =
-	    (struct acpi_db_execute_walk *)context;
-	struct acpi_buffer return_obj;
-	acpi_status status;
 	char *pathname;
 	u32 i;
 	struct acpi_device_info *obj_info;
 	struct acpi_object_list param_objects;
 	union acpi_object params[ACPI_METHOD_NUM_ARGS];
-	const union acpi_predefined_info *predefined;
-
-	predefined = acpi_ut_match_predefined_method(node->name.ascii);
-	if (!predefined) {
-		return (AE_OK);
-	}
-
-	if (node->type == ACPI_TYPE_LOCAL_SCOPE) {
-		return (AE_OK);
-	}
+	struct acpi_buffer return_obj;
+	acpi_status status;
 
 	pathname = acpi_ns_get_external_pathname(node);
 	if (!pathname) {
@@ -386,7 +376,7 @@
 
 	/* Get the object info for number of method parameters */
 
-	status = acpi_get_object_info(obj_handle, &obj_info);
+	status = acpi_get_object_info(node, &obj_info);
 	if (ACPI_FAILURE(status)) {
 		ACPI_FREE(pathname);
 		return (status);
@@ -417,14 +407,67 @@
 	acpi_gbl_method_executing = TRUE;
 
 	status = acpi_evaluate_object(node, NULL, &param_objects, &return_obj);
+	acpi_gbl_method_executing = FALSE;
 
 	acpi_os_printf("%-32s returned %s\n", pathname,
 		       acpi_format_exception(status));
-	acpi_gbl_method_executing = FALSE;
+	if (return_obj.length) {
+		acpi_os_printf("Evaluation of %s returned object %p, "
+			       "external buffer length %X\n",
+			       pathname, return_obj.pointer,
+			       (u32)return_obj.length);
+
+		acpi_db_dump_external_object(return_obj.pointer, 1);
+		acpi_os_printf("\n");
+	}
+
 	ACPI_FREE(pathname);
 
 	/* Ignore status from method execution */
 
+	return (AE_OK);
+
+	/* Update count, check if we have executed enough methods */
+
+}
+
+/*******************************************************************************
+ *
+ * FUNCTION:    acpi_db_walk_for_execute
+ *
+ * PARAMETERS:  Callback from walk_namespace
+ *
+ * RETURN:      Status
+ *
+ * DESCRIPTION: Batch execution function. Evaluates all "predefined" objects --
+ *              the nameseg begins with an underscore.
+ *
+ ******************************************************************************/
+
+static acpi_status
+acpi_db_walk_for_execute(acpi_handle obj_handle,
+			 u32 nesting_level, void *context, void **return_value)
+{
+	struct acpi_namespace_node *node =
+	    (struct acpi_namespace_node *)obj_handle;
+	struct acpi_db_execute_walk *info =
+	    (struct acpi_db_execute_walk *)context;
+	acpi_status status;
+	const union acpi_predefined_info *predefined;
+
+	predefined = acpi_ut_match_predefined_method(node->name.ascii);
+	if (!predefined) {
+		return (AE_OK);
+	}
+
+	if (node->type == ACPI_TYPE_LOCAL_SCOPE) {
+		return (AE_OK);
+	}
+
+	acpi_db_evaluate_object(node);
+
+	/* Ignore status from object evaluation */
+
 	status = AE_OK;
 
 	/* Update count, check if we have executed enough methods */
@@ -439,6 +482,52 @@
 
 /*******************************************************************************
  *
+ * FUNCTION:    acpi_db_walk_for_execute_all
+ *
+ * PARAMETERS:  Callback from walk_namespace
+ *
+ * RETURN:      Status
+ *
+ * DESCRIPTION: Batch execution function. Evaluates all objects whose path ends
+ *              with the nameseg "Info->NameSeg". Used for the "ALL" command.
+ *
+ ******************************************************************************/
+
+static acpi_status
+acpi_db_walk_for_execute_all(acpi_handle obj_handle,
+			     u32 nesting_level,
+			     void *context, void **return_value)
+{
+	struct acpi_namespace_node *node =
+	    (struct acpi_namespace_node *)obj_handle;
+	struct acpi_db_execute_walk *info =
+	    (struct acpi_db_execute_walk *)context;
+	acpi_status status;
+
+	if (!ACPI_COMPARE_NAMESEG(node->name.ascii, info->name_seg)) {
+		return (AE_OK);
+	}
+
+	if (node->type == ACPI_TYPE_LOCAL_SCOPE) {
+		return (AE_OK);
+	}
+
+	/* Now evaluate the input object (node) */
+
+	acpi_db_evaluate_object(node);
+
+	/* Ignore status from method execution */
+
+	status = AE_OK;
+
+	/* Update count of executed methods/objects */
+
+	info->count++;
+	return (status);
+}
+
+/*******************************************************************************
+ *
  * FUNCTION:    acpi_db_evaluate_predefined_names
  *
  * PARAMETERS:  None
@@ -466,3 +555,35 @@
 	acpi_os_printf("Evaluated %u predefined names in the namespace\n",
 		       info.count);
 }
+
+/*******************************************************************************
+ *
+ * FUNCTION:    acpi_db_evaluate_all
+ *
+ * PARAMETERS:  none_acpi_gbl_db_method_info
+ *
+ * RETURN:      None
+ *
+ * DESCRIPTION: Namespace batch execution. Implements the "ALL" command.
+ *              Execute all namepaths whose final nameseg matches the
+ *              input nameseg.
+ *
+ ******************************************************************************/
+
+void acpi_db_evaluate_all(char *name_seg)
+{
+	struct acpi_db_execute_walk info;
+
+	info.count = 0;
+	info.max_count = ACPI_UINT32_MAX;
+	ACPI_COPY_NAMESEG(info.name_seg, name_seg);
+	info.name_seg[ACPI_NAMESEG_SIZE] = 0;
+
+	/* Search all nodes in namespace */
+
+	(void)acpi_walk_namespace(ACPI_TYPE_ANY, ACPI_ROOT_OBJECT,
+				  ACPI_UINT32_MAX, acpi_db_walk_for_execute_all,
+				  NULL, (void *)&info, NULL);
+
+	acpi_os_printf("Evaluated %u names in the namespace\n", info.count);
+}
diff --git a/drivers/acpi/acpica/dbnames.c b/drivers/acpi/acpica/dbnames.c
index 63fe30e..3615e1a 100644
--- a/drivers/acpi/acpica/dbnames.c
+++ b/drivers/acpi/acpica/dbnames.c
@@ -10,6 +10,7 @@
 #include "acnamesp.h"
 #include "acdebug.h"
 #include "acpredef.h"
+#include "acinterp.h"
 
 #define _COMPONENT          ACPI_CA_DEBUGGER
 ACPI_MODULE_NAME("dbnames")
@@ -504,6 +505,86 @@
 
 /*******************************************************************************
  *
+ * FUNCTION:    acpi_db_walk_for_fields
+ *
+ * PARAMETERS:  Callback from walk_namespace
+ *
+ * RETURN:      Status
+ *
+ * DESCRIPTION: Display short info about objects in the namespace
+ *
+ ******************************************************************************/
+
+static acpi_status
+acpi_db_walk_for_fields(acpi_handle obj_handle,
+			u32 nesting_level, void *context, void **return_value)
+{
+	union acpi_object *ret_value;
+	struct acpi_region_walk_info *info =
+	    (struct acpi_region_walk_info *)context;
+	struct acpi_buffer buffer;
+	acpi_status status;
+	struct acpi_namespace_node *node = acpi_ns_validate_handle(obj_handle);
+
+	if (!node) {
+		return (AE_OK);
+	}
+	if (node->object->field.region_obj->region.space_id !=
+	    info->address_space_id) {
+		return (AE_OK);
+	}
+
+	info->count++;
+
+	/* Get and display the full pathname to this object */
+
+	buffer.length = ACPI_ALLOCATE_LOCAL_BUFFER;
+	status = acpi_ns_handle_to_pathname(obj_handle, &buffer, TRUE);
+	if (ACPI_FAILURE(status)) {
+		acpi_os_printf("Could Not get pathname for object %p\n",
+			       obj_handle);
+		return (AE_OK);
+	}
+
+	acpi_os_printf("%s ", (char *)buffer.pointer);
+	ACPI_FREE(buffer.pointer);
+
+	buffer.length = ACPI_ALLOCATE_LOCAL_BUFFER;
+	acpi_evaluate_object(obj_handle, NULL, NULL, &buffer);
+
+	/*
+	 * Since this is a field unit, surround the output in braces
+	 */
+	acpi_os_printf("{");
+
+	ret_value = (union acpi_object *)buffer.pointer;
+	switch (ret_value->type) {
+	case ACPI_TYPE_INTEGER:
+
+		acpi_os_printf("%8.8X%8.8X",
+			       ACPI_FORMAT_UINT64(ret_value->integer.value));
+		break;
+
+	case ACPI_TYPE_BUFFER:
+
+		acpi_ut_dump_buffer(ret_value->buffer.pointer,
+				    ret_value->buffer.length,
+				    DB_DISPLAY_DATA_ONLY | DB_BYTE_DISPLAY, 0);
+		break;
+
+	default:
+
+		break;
+	}
+	acpi_os_printf("}\n");
+
+	ACPI_FREE(buffer.pointer);
+
+	return (AE_OK);
+}
+
+/*******************************************************************************
+ *
  * FUNCTION:    acpi_db_walk_for_specific_objects
  *
  * PARAMETERS:  Callback from walk_namespace
@@ -630,6 +711,39 @@
 
 /*******************************************************************************
  *
+ * FUNCTION:    acpi_db_display_fields
+ *
+ * PARAMETERS:  obj_type_arg        - Type of object to display
+ *              display_count_arg   - Max depth to display
+ *
+ * RETURN:      None
+ *
+ * DESCRIPTION: Display objects in the namespace of the requested type
+ *
+ ******************************************************************************/
+
+acpi_status acpi_db_display_fields(u32 address_space_id)
+{
+	struct acpi_region_walk_info info;
+
+	info.count = 0;
+	info.owner_id = ACPI_OWNER_ID_MAX;
+	info.debug_level = ACPI_UINT32_MAX;
+	info.display_type = ACPI_DISPLAY_SUMMARY | ACPI_DISPLAY_SHORT;
+	info.address_space_id = address_space_id;
+
+	/* Walk the namespace from the root */
+
+	(void)acpi_walk_namespace(ACPI_TYPE_LOCAL_REGION_FIELD,
+				  ACPI_ROOT_OBJECT, ACPI_UINT32_MAX,
+				  acpi_db_walk_for_fields, NULL, (void *)&info,
+				  NULL);
+
+	return (AE_OK);
+}
+
+/*******************************************************************************
+ *
  * FUNCTION:    acpi_db_integrity_walk
  *
  * PARAMETERS:  Callback from walk_namespace
diff --git a/drivers/acpi/acpica/dbobject.c b/drivers/acpi/acpica/dbobject.c
index f9fc84b..4b4c530 100644
--- a/drivers/acpi/acpica/dbobject.c
+++ b/drivers/acpi/acpica/dbobject.c
@@ -464,7 +464,6 @@
 	u8 display_args = FALSE;
 
 	node = walk_state->method_node;
-	obj_desc = walk_state->method_desc;
 
 	/* There are no arguments for the module-level code case */
 
diff --git a/drivers/acpi/acpica/dbxface.c b/drivers/acpi/acpica/dbxface.c
index 3eb45ea..9dfd693 100644
--- a/drivers/acpi/acpica/dbxface.c
+++ b/drivers/acpi/acpica/dbxface.c
@@ -409,6 +409,7 @@
 	acpi_gbl_db_output_flags = ACPI_DB_CONSOLE_OUTPUT;
 
 	acpi_gbl_db_opt_no_ini_methods = FALSE;
+	acpi_gbl_db_opt_no_region_support = FALSE;
 
 	acpi_gbl_db_buffer = acpi_os_allocate(ACPI_DEBUG_BUFFER_SIZE);
 	if (!acpi_gbl_db_buffer) {
diff --git a/drivers/acpi/acpica/dsargs.c b/drivers/acpi/acpica/dsargs.c
index 85b34d0..ad17f62 100644
--- a/drivers/acpi/acpica/dsargs.c
+++ b/drivers/acpi/acpica/dsargs.c
@@ -4,7 +4,7 @@
  * Module Name: dsargs - Support for execution of dynamic arguments for static
  *                       objects (regions, fields, buffer fields, etc.)
  *
- * Copyright (C) 2000 - 2019, Intel Corp.
+ * Copyright (C) 2000 - 2020, Intel Corp.
  *
  *****************************************************************************/
 
diff --git a/drivers/acpi/acpica/dscontrol.c b/drivers/acpi/acpica/dscontrol.c
index 4847f89..4b5b6e8 100644
--- a/drivers/acpi/acpica/dscontrol.c
+++ b/drivers/acpi/acpica/dscontrol.c
@@ -4,7 +4,7 @@
  * Module Name: dscontrol - Support for execution control opcodes -
  *                          if/else/while/return
  *
- * Copyright (C) 2000 - 2019, Intel Corp.
+ * Copyright (C) 2000 - 2020, Intel Corp.
  *
  *****************************************************************************/
 
@@ -85,7 +85,7 @@
 		    walk_state->parser_state.pkg_end;
 		control_state->control.opcode = op->common.aml_opcode;
 		control_state->control.loop_timeout = acpi_os_get_timer() +
-		    (u64)(acpi_gbl_max_loop_iterations * ACPI_100NSEC_PER_SEC);
+		    ((u64)acpi_gbl_max_loop_iterations * ACPI_100NSEC_PER_SEC);
 
 		/* Push the control state on this walk's control stack */
 
diff --git a/drivers/acpi/acpica/dsdebug.c b/drivers/acpi/acpica/dsdebug.c
index 0d3e1ce..63bc5f1 100644
--- a/drivers/acpi/acpica/dsdebug.c
+++ b/drivers/acpi/acpica/dsdebug.c
@@ -3,7 +3,7 @@
  *
  * Module Name: dsdebug - Parser/Interpreter interface - debugging
  *
- * Copyright (C) 2000 - 2019, Intel Corp.
+ * Copyright (C) 2000 - 2020, Intel Corp.
  *
  *****************************************************************************/
 
diff --git a/drivers/acpi/acpica/dsfield.c b/drivers/acpi/acpica/dsfield.c
index fd9028a..fa768b3 100644
--- a/drivers/acpi/acpica/dsfield.c
+++ b/drivers/acpi/acpica/dsfield.c
@@ -3,7 +3,7 @@
  *
  * Module Name: dsfield - Dispatcher field routines
  *
- * Copyright (C) 2000 - 2019, Intel Corp.
+ * Copyright (C) 2000 - 2020, Intel Corp.
  *
  *****************************************************************************/
 
@@ -149,7 +149,6 @@
 
 	if (walk_state->deferred_node) {
 		node = walk_state->deferred_node;
-		status = AE_OK;
 	} else {
 		/* Execute flag should always be set when this function is entered */
 
@@ -178,7 +177,10 @@
 					arg->common.value.string, ACPI_TYPE_ANY,
 					ACPI_IMODE_LOAD_PASS1, flags,
 					walk_state, &node);
-		if (ACPI_FAILURE(status)) {
+		if ((walk_state->parse_flags & ACPI_PARSE_DISASSEMBLE)
+		    && status == AE_ALREADY_EXISTS) {
+			status = AE_OK;
+		} else if (ACPI_FAILURE(status)) {
 			ACPI_ERROR_NAMESPACE(walk_state->scope_info,
 					     arg->common.value.string, status);
 			return_ACPI_STATUS(status);
@@ -264,7 +266,6 @@
 	union acpi_parse_object *child;
 
 #ifdef ACPI_EXEC_APP
-	u64 value = 0;
 	union acpi_operand_object *result_desc;
 	union acpi_operand_object *obj_desc;
 	char *name_path;
@@ -406,19 +407,17 @@
 					name_path =
 					    acpi_ns_get_external_pathname(info->
 									  field_node);
-					obj_desc =
-					    acpi_ut_create_integer_object
-					    (value);
 					if (ACPI_SUCCESS
 					    (ae_lookup_init_file_entry
-					     (name_path, &value))) {
+					     (name_path, &obj_desc))) {
 						acpi_ex_write_data_to_field
 						    (obj_desc,
 						     acpi_ns_get_attached_object
 						     (info->field_node),
 						     &result_desc);
+						acpi_ut_remove_reference
+						    (obj_desc);
 					}
-					acpi_ut_remove_reference(obj_desc);
 					ACPI_FREE(name_path);
 #endif
 				}
@@ -643,8 +642,6 @@
 				}
 
 				/* Name already exists, just ignore this error */
-
-				status = AE_OK;
 			}
 
 			arg->common.node = node;
diff --git a/drivers/acpi/acpica/dsinit.c b/drivers/acpi/acpica/dsinit.c
index a1ffed2..9be2a30 100644
--- a/drivers/acpi/acpica/dsinit.c
+++ b/drivers/acpi/acpica/dsinit.c
@@ -3,7 +3,7 @@
  *
  * Module Name: dsinit - Object initialization namespace walk
  *
- * Copyright (C) 2000 - 2019, Intel Corp.
+ * Copyright (C) 2000 - 2020, Intel Corp.
  *
  *****************************************************************************/
 
diff --git a/drivers/acpi/acpica/dsmethod.c b/drivers/acpi/acpica/dsmethod.c
index f59b4d9..cf67caf 100644
--- a/drivers/acpi/acpica/dsmethod.c
+++ b/drivers/acpi/acpica/dsmethod.c
@@ -3,7 +3,7 @@
  *
  * Module Name: dsmethod - Parser/Interpreter interface - control method parsing
  *
- * Copyright (C) 2000 - 2019, Intel Corp.
+ * Copyright (C) 2000 - 2020, Intel Corp.
  *
  *****************************************************************************/
 
diff --git a/drivers/acpi/acpica/dsobject.c b/drivers/acpi/acpica/dsobject.c
index 179129a..c0a14a6 100644
--- a/drivers/acpi/acpica/dsobject.c
+++ b/drivers/acpi/acpica/dsobject.c
@@ -3,7 +3,7 @@
  *
  * Module Name: dsobject - Dispatcher object management routines
  *
- * Copyright (C) 2000 - 2019, Intel Corp.
+ * Copyright (C) 2000 - 2020, Intel Corp.
  *
  *****************************************************************************/
 
diff --git a/drivers/acpi/acpica/dsopcode.c b/drivers/acpi/acpica/dsopcode.c
index 10f32b6..d9c26e7 100644
--- a/drivers/acpi/acpica/dsopcode.c
+++ b/drivers/acpi/acpica/dsopcode.c
@@ -3,7 +3,7 @@
  *
  * Module Name: dsopcode - Dispatcher support for regions and fields
  *
- * Copyright (C) 2000 - 2019, Intel Corp.
+ * Copyright (C) 2000 - 2020, Intel Corp.
  *
  *****************************************************************************/
 
@@ -217,6 +217,8 @@
 	}
 
 	obj_desc->buffer_field.buffer_obj = buffer_desc;
+	obj_desc->buffer_field.is_create_field =
+	    aml_opcode == AML_CREATE_FIELD_OP;
 
 	/* Reference count for buffer_desc inherits obj_desc count */
 
diff --git a/drivers/acpi/acpica/dspkginit.c b/drivers/acpi/acpica/dspkginit.c
index 997faa1..d869568 100644
--- a/drivers/acpi/acpica/dspkginit.c
+++ b/drivers/acpi/acpica/dspkginit.c
@@ -3,7 +3,7 @@
  *
  * Module Name: dspkginit - Completion of deferred package initialization
  *
- * Copyright (C) 2000 - 2019, Intel Corp.
+ * Copyright (C) 2000 - 2020, Intel Corp.
  *
  *****************************************************************************/
 
diff --git a/drivers/acpi/acpica/dswexec.c b/drivers/acpi/acpica/dswexec.c
index a68237b..1d4f8c8 100644
--- a/drivers/acpi/acpica/dswexec.c
+++ b/drivers/acpi/acpica/dswexec.c
@@ -4,7 +4,7 @@
  * Module Name: dswexec - Dispatcher method execution callbacks;
  *                        dispatch to interpreter.
  *
- * Copyright (C) 2000 - 2019, Intel Corp.
+ * Copyright (C) 2000 - 2020, Intel Corp.
  *
  *****************************************************************************/
 
diff --git a/drivers/acpi/acpica/dswload.c b/drivers/acpi/acpica/dswload.c
index 6cf93fa..2706932 100644
--- a/drivers/acpi/acpica/dswload.c
+++ b/drivers/acpi/acpica/dswload.c
@@ -3,7 +3,7 @@
  *
  * Module Name: dswload - Dispatcher first pass namespace load callbacks
  *
- * Copyright (C) 2000 - 2019, Intel Corp.
+ * Copyright (C) 2000 - 2020, Intel Corp.
  *
  *****************************************************************************/
 
diff --git a/drivers/acpi/acpica/dswload2.c b/drivers/acpi/acpica/dswload2.c
index 15d92bf..edadbe1 100644
--- a/drivers/acpi/acpica/dswload2.c
+++ b/drivers/acpi/acpica/dswload2.c
@@ -3,7 +3,7 @@
  *
  * Module Name: dswload2 - Dispatcher second pass namespace load callbacks
  *
- * Copyright (C) 2000 - 2019, Intel Corp.
+ * Copyright (C) 2000 - 2020, Intel Corp.
  *
  *****************************************************************************/
 
diff --git a/drivers/acpi/acpica/dswscope.c b/drivers/acpi/acpica/dswscope.c
index 39acf7b..9c39764 100644
--- a/drivers/acpi/acpica/dswscope.c
+++ b/drivers/acpi/acpica/dswscope.c
@@ -3,7 +3,7 @@
  *
  * Module Name: dswscope - Scope stack manipulation
  *
- * Copyright (C) 2000 - 2019, Intel Corp.
+ * Copyright (C) 2000 - 2020, Intel Corp.
  *
  *****************************************************************************/
 
diff --git a/drivers/acpi/acpica/dswstate.c b/drivers/acpi/acpica/dswstate.c
index de79f83..809a0c0 100644
--- a/drivers/acpi/acpica/dswstate.c
+++ b/drivers/acpi/acpica/dswstate.c
@@ -3,7 +3,7 @@
  *
  * Module Name: dswstate - Dispatcher parse tree walk management routines
  *
- * Copyright (C) 2000 - 2019, Intel Corp.
+ * Copyright (C) 2000 - 2020, Intel Corp.
  *
  *****************************************************************************/
 
diff --git a/drivers/acpi/acpica/evevent.c b/drivers/acpi/acpica/evevent.c
index bad2257..9efca54 100644
--- a/drivers/acpi/acpica/evevent.c
+++ b/drivers/acpi/acpica/evevent.c
@@ -3,7 +3,7 @@
  *
  * Module Name: evevent - Fixed Event handling and dispatch
  *
- * Copyright (C) 2000 - 2019, Intel Corp.
+ * Copyright (C) 2000 - 2020, Intel Corp.
  *
  *****************************************************************************/
 
@@ -130,7 +130,7 @@
 
 	/*
 	 * Initialize the structure that keeps track of fixed event handlers and
-	 * enable the fixed events.
+	 * disable all of the fixed events.
 	 */
 	for (i = 0; i < ACPI_NUM_FIXED_EVENTS; i++) {
 		acpi_gbl_fixed_event_handlers[i].handler = NULL;
diff --git a/drivers/acpi/acpica/evglock.c b/drivers/acpi/acpica/evglock.c
index 5c77bee..0ced84a 100644
--- a/drivers/acpi/acpica/evglock.c
+++ b/drivers/acpi/acpica/evglock.c
@@ -3,7 +3,7 @@
  *
  * Module Name: evglock - Global Lock support
  *
- * Copyright (C) 2000 - 2019, Intel Corp.
+ * Copyright (C) 2000 - 2020, Intel Corp.
  *
  *****************************************************************************/
 
diff --git a/drivers/acpi/acpica/evgpe.c b/drivers/acpi/acpica/evgpe.c
index 344feba..06b9c8d 100644
--- a/drivers/acpi/acpica/evgpe.c
+++ b/drivers/acpi/acpica/evgpe.c
@@ -3,7 +3,7 @@
  *
  * Module Name: evgpe - General Purpose Event handling and dispatch
  *
- * Copyright (C) 2000 - 2019, Intel Corp.
+ * Copyright (C) 2000 - 2020, Intel Corp.
  *
  *****************************************************************************/
 
@@ -656,14 +656,14 @@
 
 	/* GPE currently enabled (enable bit == 1)? */
 
-	status = acpi_hw_read(&enable_reg, &gpe_register_info->enable_address);
+	status = acpi_hw_gpe_read(&enable_reg, &gpe_register_info->enable_address);
 	if (ACPI_FAILURE(status)) {
 		goto error_exit;
 	}
 
 	/* GPE currently active (status bit == 1)? */
 
-	status = acpi_hw_read(&status_reg, &gpe_register_info->status_address);
+	status = acpi_hw_gpe_read(&status_reg, &gpe_register_info->status_address);
 	if (ACPI_FAILURE(status)) {
 		goto error_exit;
 	}
diff --git a/drivers/acpi/acpica/evgpeblk.c b/drivers/acpi/acpica/evgpeblk.c
index fb15e9e..f5298be 100644
--- a/drivers/acpi/acpica/evgpeblk.c
+++ b/drivers/acpi/acpica/evgpeblk.c
@@ -3,7 +3,7 @@
  *
  * Module Name: evgpeblk - GPE block creation and initialization.
  *
- * Copyright (C) 2000 - 2019, Intel Corp.
+ * Copyright (C) 2000 - 2020, Intel Corp.
  *
  *****************************************************************************/
 
@@ -110,6 +110,9 @@
 
 	status =
 	    acpi_hw_disable_gpe_block(gpe_block->xrupt_block, gpe_block, NULL);
+	if (ACPI_FAILURE(status)) {
+		return_ACPI_STATUS(status);
+	}
 
 	if (!gpe_block->previous && !gpe_block->next) {
 
@@ -230,12 +233,6 @@
 
 		this_register->status_address.space_id = gpe_block->space_id;
 		this_register->enable_address.space_id = gpe_block->space_id;
-		this_register->status_address.bit_width =
-		    ACPI_GPE_REGISTER_WIDTH;
-		this_register->enable_address.bit_width =
-		    ACPI_GPE_REGISTER_WIDTH;
-		this_register->status_address.bit_offset = 0;
-		this_register->enable_address.bit_offset = 0;
 
 		/* Init the event_info for each GPE within this register */
 
@@ -248,14 +245,14 @@
 
 		/* Disable all GPEs within this register */
 
-		status = acpi_hw_write(0x00, &this_register->enable_address);
+		status = acpi_hw_gpe_write(0x00, &this_register->enable_address);
 		if (ACPI_FAILURE(status)) {
 			goto error_exit;
 		}
 
 		/* Clear any pending GPE events within this register */
 
-		status = acpi_hw_write(0xFF, &this_register->status_address);
+		status = acpi_hw_gpe_write(0xFF, &this_register->status_address);
 		if (ACPI_FAILURE(status)) {
 			goto error_exit;
 		}
@@ -314,6 +311,23 @@
 		return_ACPI_STATUS(AE_OK);
 	}
 
+	/* Validate the space_ID */
+
+	if ((space_id != ACPI_ADR_SPACE_SYSTEM_MEMORY) &&
+	    (space_id != ACPI_ADR_SPACE_SYSTEM_IO)) {
+		ACPI_ERROR((AE_INFO,
+			    "Unsupported address space: 0x%X", space_id));
+		return_ACPI_STATUS(AE_SUPPORT);
+	}
+
+	if (space_id == ACPI_ADR_SPACE_SYSTEM_IO) {
+		status = acpi_hw_validate_io_block(address,
+						   ACPI_GPE_REGISTER_WIDTH,
+						   register_count);
+		if (ACPI_FAILURE(status))
+			return_ACPI_STATUS(status);
+	}
+
 	/* Allocate a new GPE block */
 
 	gpe_block = ACPI_ALLOCATE_ZEROED(sizeof(struct acpi_gpe_block_info));
@@ -359,10 +373,10 @@
 	walk_info.gpe_device = gpe_device;
 	walk_info.execute_by_owner_id = FALSE;
 
-	status = acpi_ns_walk_namespace(ACPI_TYPE_METHOD, gpe_device,
-					ACPI_UINT32_MAX, ACPI_NS_WALK_NO_UNLOCK,
-					acpi_ev_match_gpe_method, NULL,
-					&walk_info, NULL);
+	(void)acpi_ns_walk_namespace(ACPI_TYPE_METHOD, gpe_device,
+				     ACPI_UINT32_MAX, ACPI_NS_WALK_NO_UNLOCK,
+				     acpi_ev_match_gpe_method, NULL, &walk_info,
+				     NULL);
 
 	/* Return the new block */
 
diff --git a/drivers/acpi/acpica/evgpeinit.c b/drivers/acpi/acpica/evgpeinit.c
index b04f982..6d82d30 100644
--- a/drivers/acpi/acpica/evgpeinit.c
+++ b/drivers/acpi/acpica/evgpeinit.c
@@ -3,7 +3,7 @@
  *
  * Module Name: evgpeinit - System GPE initialization and update
  *
- * Copyright (C) 2000 - 2019, Intel Corp.
+ * Copyright (C) 2000 - 2020, Intel Corp.
  *
  *****************************************************************************/
 
@@ -32,6 +32,16 @@
  * kernel boot time as well.
  */
 
+#ifdef ACPI_GPE_USE_LOGICAL_ADDRESSES
+#define ACPI_FADT_GPE_BLOCK_ADDRESS(N)	\
+	acpi_gbl_FADT.xgpe##N##_block.space_id == \
+					ACPI_ADR_SPACE_SYSTEM_MEMORY ? \
+		(u64)acpi_gbl_xgpe##N##_block_logical_address : \
+		acpi_gbl_FADT.xgpe##N##_block.address
+#else
+#define ACPI_FADT_GPE_BLOCK_ADDRESS(N)	acpi_gbl_FADT.xgpe##N##_block.address
+#endif		/* ACPI_GPE_USE_LOGICAL_ADDRESSES */
+
 /*******************************************************************************
  *
  * FUNCTION:    acpi_ev_gpe_initialize
@@ -49,6 +59,7 @@
 	u32 register_count1 = 0;
 	u32 gpe_number_max = 0;
 	acpi_status status;
+	u64 address;
 
 	ACPI_FUNCTION_TRACE(ev_gpe_initialize);
 
@@ -85,8 +96,9 @@
 	 * If EITHER the register length OR the block address are zero, then that
 	 * particular block is not supported.
 	 */
-	if (acpi_gbl_FADT.gpe0_block_length &&
-	    acpi_gbl_FADT.xgpe0_block.address) {
+	address = ACPI_FADT_GPE_BLOCK_ADDRESS(0);
+
+	if (acpi_gbl_FADT.gpe0_block_length && address) {
 
 		/* GPE block 0 exists (has both length and address > 0) */
 
@@ -97,7 +109,6 @@
 		/* Install GPE Block 0 */
 
 		status = acpi_ev_create_gpe_block(acpi_gbl_fadt_gpe_device,
-						  acpi_gbl_FADT.xgpe0_block.
 						  address,
 						  acpi_gbl_FADT.xgpe0_block.
 						  space_id, register_count0, 0,
@@ -110,8 +121,9 @@
 		}
 	}
 
-	if (acpi_gbl_FADT.gpe1_block_length &&
-	    acpi_gbl_FADT.xgpe1_block.address) {
+	address = ACPI_FADT_GPE_BLOCK_ADDRESS(1);
+
+	if (acpi_gbl_FADT.gpe1_block_length && address) {
 
 		/* GPE block 1 exists (has both length and address > 0) */
 
@@ -137,7 +149,6 @@
 
 			status =
 			    acpi_ev_create_gpe_block(acpi_gbl_fadt_gpe_device,
-						     acpi_gbl_FADT.xgpe1_block.
 						     address,
 						     acpi_gbl_FADT.xgpe1_block.
 						     space_id, register_count1,
@@ -156,8 +167,6 @@
 			 * GPE0 and GPE1 do not have to be contiguous in the GPE number
 			 * space. However, GPE0 always starts at GPE number zero.
 			 */
-			gpe_number_max = acpi_gbl_FADT.gpe1_base +
-			    ((register_count1 * ACPI_GPE_REGISTER_WIDTH) - 1);
 		}
 	}
 
@@ -169,7 +178,6 @@
 
 		ACPI_DEBUG_PRINT((ACPI_DB_INIT,
 				  "There are no GPE blocks defined in the FADT\n"));
-		status = AE_OK;
 		goto cleanup;
 	}
 
diff --git a/drivers/acpi/acpica/evgpeutil.c b/drivers/acpi/acpica/evgpeutil.c
index 9178922..738873e 100644
--- a/drivers/acpi/acpica/evgpeutil.c
+++ b/drivers/acpi/acpica/evgpeutil.c
@@ -3,7 +3,7 @@
  *
  * Module Name: evgpeutil - GPE utilities
  *
- * Copyright (C) 2000 - 2019, Intel Corp.
+ * Copyright (C) 2000 - 2020, Intel Corp.
  *
  *****************************************************************************/
 
diff --git a/drivers/acpi/acpica/evhandler.c b/drivers/acpi/acpica/evhandler.c
index 78550f5..3438dc1 100644
--- a/drivers/acpi/acpica/evhandler.c
+++ b/drivers/acpi/acpica/evhandler.c
@@ -3,7 +3,7 @@
  *
  * Module Name: evhandler - Support for Address Space handlers
  *
- * Copyright (C) 2000 - 2019, Intel Corp.
+ * Copyright (C) 2000 - 2020, Intel Corp.
  *
  *****************************************************************************/
 
diff --git a/drivers/acpi/acpica/evmisc.c b/drivers/acpi/acpica/evmisc.c
index d45f763..ce1eda6 100644
--- a/drivers/acpi/acpica/evmisc.c
+++ b/drivers/acpi/acpica/evmisc.c
@@ -3,7 +3,7 @@
  *
  * Module Name: evmisc - Miscellaneous event manager support functions
  *
- * Copyright (C) 2000 - 2019, Intel Corp.
+ * Copyright (C) 2000 - 2020, Intel Corp.
  *
  *****************************************************************************/
 
@@ -230,11 +230,15 @@
 		/* Disable all GPEs in all GPE blocks */
 
 		status = acpi_ev_walk_gpe_list(acpi_hw_disable_gpe_block, NULL);
+		if (ACPI_FAILURE(status)) {
+			ACPI_EXCEPTION((AE_INFO, status,
+					"Could not disable GPEs in GPE block"));
+		}
 
 		status = acpi_ev_remove_global_lock_handler();
 		if (ACPI_FAILURE(status)) {
-			ACPI_ERROR((AE_INFO,
-				    "Could not remove Global Lock handler"));
+			ACPI_EXCEPTION((AE_INFO, status,
+					"Could not remove Global Lock handler"));
 		}
 
 		acpi_gbl_events_initialized = FALSE;
@@ -250,6 +254,10 @@
 	/* Deallocate all handler objects installed within GPE info structs */
 
 	status = acpi_ev_walk_gpe_list(acpi_ev_delete_gpe_handlers, NULL);
+	if (ACPI_FAILURE(status)) {
+		ACPI_EXCEPTION((AE_INFO, status,
+				"Could not delete GPE handlers"));
+	}
 
 	/* Return to original mode if necessary */
 
diff --git a/drivers/acpi/acpica/evregion.c b/drivers/acpi/acpica/evregion.c
index 5078203..980efc9 100644
--- a/drivers/acpi/acpica/evregion.c
+++ b/drivers/acpi/acpica/evregion.c
@@ -3,7 +3,7 @@
  *
  * Module Name: evregion - Operation Region support
  *
- * Copyright (C) 2000 - 2019, Intel Corp.
+ * Copyright (C) 2000 - 2020, Intel Corp.
  *
  *****************************************************************************/
 
@@ -866,11 +866,11 @@
 	objects[1].type = ACPI_TYPE_INTEGER;
 	objects[1].integer.value = ACPI_REG_CONNECT;
 
-	status = acpi_evaluate_object(reg_method, NULL, &args, NULL);
+	(void)acpi_evaluate_object(reg_method, NULL, &args, NULL);
 
 exit:
 	/* We ignore all errors from above, don't care */
 
-	status = acpi_ut_acquire_mutex(ACPI_MTX_NAMESPACE);
+	(void)acpi_ut_acquire_mutex(ACPI_MTX_NAMESPACE);
 	return_VOID;
 }
diff --git a/drivers/acpi/acpica/evrgnini.c b/drivers/acpi/acpica/evrgnini.c
index 0b47bbc..89be3cc 100644
--- a/drivers/acpi/acpica/evrgnini.c
+++ b/drivers/acpi/acpica/evrgnini.c
@@ -3,7 +3,7 @@
  *
  * Module Name: evrgnini- ACPI address_space (op_region) init
  *
- * Copyright (C) 2000 - 2019, Intel Corp.
+ * Copyright (C) 2000 - 2020, Intel Corp.
  *
  *****************************************************************************/
 
@@ -38,6 +38,7 @@
 	union acpi_operand_object *region_desc =
 	    (union acpi_operand_object *)handle;
 	struct acpi_mem_space_context *local_region_context;
+	struct acpi_mem_mapping *mm;
 
 	ACPI_FUNCTION_TRACE(ev_system_memory_region_setup);
 
@@ -46,13 +47,14 @@
 			local_region_context =
 			    (struct acpi_mem_space_context *)*region_context;
 
-			/* Delete a cached mapping if present */
+			/* Delete memory mappings if present */
 
-			if (local_region_context->mapped_length) {
-				acpi_os_unmap_memory(local_region_context->
-						     mapped_logical_address,
-						     local_region_context->
-						     mapped_length);
+			while (local_region_context->first_mm) {
+				mm = local_region_context->first_mm;
+				local_region_context->first_mm = mm->next_mm;
+				acpi_os_unmap_memory(mm->logical_address,
+						     mm->length);
+				ACPI_FREE(mm);
 			}
 			ACPI_FREE(local_region_context);
 			*region_context = NULL;
@@ -198,7 +200,6 @@
 						 * root bridge. Still need to return a context object
 						 * for the new PCI_Config operation region, however.
 						 */
-						status = AE_OK;
 					} else {
 						ACPI_EXCEPTION((AE_INFO, status,
 								"Could not install PciConfig handler "
diff --git a/drivers/acpi/acpica/evxface.c b/drivers/acpi/acpica/evxface.c
index 279ef05..e4e0122 100644
--- a/drivers/acpi/acpica/evxface.c
+++ b/drivers/acpi/acpica/evxface.c
@@ -3,7 +3,7 @@
  *
  * Module Name: evxface - External interfaces for ACPI events
  *
- * Copyright (C) 2000 - 2019, Intel Corp.
+ * Copyright (C) 2000 - 2020, Intel Corp.
  *
  *****************************************************************************/
 
diff --git a/drivers/acpi/acpica/evxfevnt.c b/drivers/acpi/acpica/evxfevnt.c
index e528fe5..1a15b00 100644
--- a/drivers/acpi/acpica/evxfevnt.c
+++ b/drivers/acpi/acpica/evxfevnt.c
@@ -3,7 +3,7 @@
  *
  * Module Name: evxfevnt - External Interfaces, ACPI event disable/enable
  *
- * Copyright (C) 2000 - 2019, Intel Corp.
+ * Copyright (C) 2000 - 2020, Intel Corp.
  *
  *****************************************************************************/
 
diff --git a/drivers/acpi/acpica/evxfgpe.c b/drivers/acpi/acpica/evxfgpe.c
index 3e1813e..3be6067 100644
--- a/drivers/acpi/acpica/evxfgpe.c
+++ b/drivers/acpi/acpica/evxfgpe.c
@@ -3,7 +3,7 @@
  *
  * Module Name: evxfgpe - External Interfaces for General Purpose Events (GPEs)
  *
- * Copyright (C) 2000 - 2019, Intel Corp.
+ * Copyright (C) 2000 - 2020, Intel Corp.
  *
  *****************************************************************************/
 
diff --git a/drivers/acpi/acpica/evxfregn.c b/drivers/acpi/acpica/evxfregn.c
index 6e0d2a9..3bb06f1 100644
--- a/drivers/acpi/acpica/evxfregn.c
+++ b/drivers/acpi/acpica/evxfregn.c
@@ -4,7 +4,7 @@
  * Module Name: evxfregn - External Interfaces, ACPI Operation Regions and
  *                         Address Spaces.
  *
- * Copyright (C) 2000 - 2019, Intel Corp.
+ * Copyright (C) 2000 - 2020, Intel Corp.
  *
  *****************************************************************************/
 
diff --git a/drivers/acpi/acpica/exconcat.c b/drivers/acpi/acpica/exconcat.c
index c7af075..4371141 100644
--- a/drivers/acpi/acpica/exconcat.c
+++ b/drivers/acpi/acpica/exconcat.c
@@ -3,7 +3,7 @@
  *
  * Module Name: exconcat - Concatenate-type AML operators
  *
- * Copyright (C) 2000 - 2019, Intel Corp.
+ * Copyright (C) 2000 - 2020, Intel Corp.
  *
  *****************************************************************************/
 
diff --git a/drivers/acpi/acpica/exconfig.c b/drivers/acpi/acpica/exconfig.c
index 46a8baf..68efd70 100644
--- a/drivers/acpi/acpica/exconfig.c
+++ b/drivers/acpi/acpica/exconfig.c
@@ -3,7 +3,7 @@
  *
  * Module Name: exconfig - Namespace reconfiguration (Load/Unload opcodes)
  *
- * Copyright (C) 2000 - 2019, Intel Corp.
+ * Copyright (C) 2000 - 2020, Intel Corp.
  *
  *****************************************************************************/
 
diff --git a/drivers/acpi/acpica/exconvrt.c b/drivers/acpi/acpica/exconvrt.c
index ca2966b..50c7aad 100644
--- a/drivers/acpi/acpica/exconvrt.c
+++ b/drivers/acpi/acpica/exconvrt.c
@@ -3,7 +3,7 @@
  *
  * Module Name: exconvrt - Object conversion routines
  *
- * Copyright (C) 2000 - 2019, Intel Corp.
+ * Copyright (C) 2000 - 2020, Intel Corp.
  *
  *****************************************************************************/
 
diff --git a/drivers/acpi/acpica/excreate.c b/drivers/acpi/acpica/excreate.c
index f376fc0..a174824 100644
--- a/drivers/acpi/acpica/excreate.c
+++ b/drivers/acpi/acpica/excreate.c
@@ -3,7 +3,7 @@
  *
  * Module Name: excreate - Named object creation
  *
- * Copyright (C) 2000 - 2019, Intel Corp.
+ * Copyright (C) 2000 - 2020, Intel Corp.
  *
  *****************************************************************************/
 
diff --git a/drivers/acpi/acpica/exdebug.c b/drivers/acpi/acpica/exdebug.c
index b1aeec8..a5223dc 100644
--- a/drivers/acpi/acpica/exdebug.c
+++ b/drivers/acpi/acpica/exdebug.c
@@ -3,7 +3,7 @@
  *
  * Module Name: exdebug - Support for stores to the AML Debug Object
  *
- * Copyright (C) 2000 - 2019, Intel Corp.
+ * Copyright (C) 2000 - 2020, Intel Corp.
  *
  *****************************************************************************/
 
diff --git a/drivers/acpi/acpica/exdump.c b/drivers/acpi/acpica/exdump.c
index a9bc938..47a4d9a 100644
--- a/drivers/acpi/acpica/exdump.c
+++ b/drivers/acpi/acpica/exdump.c
@@ -3,7 +3,7 @@
  *
  * Module Name: exdump - Interpreter debug output routines
  *
- * Copyright (C) 2000 - 2019, Intel Corp.
+ * Copyright (C) 2000 - 2020, Intel Corp.
  *
  *****************************************************************************/
 
diff --git a/drivers/acpi/acpica/exfield.c b/drivers/acpi/acpica/exfield.c
index d3d2dbf..b3230e5 100644
--- a/drivers/acpi/acpica/exfield.c
+++ b/drivers/acpi/acpica/exfield.c
@@ -3,7 +3,7 @@
  *
  * Module Name: exfield - AML execution - field_unit read/write
  *
- * Copyright (C) 2000 - 2019, Intel Corp.
+ * Copyright (C) 2000 - 2020, Intel Corp.
  *
  *****************************************************************************/
 
@@ -22,7 +22,7 @@
  */
 #define ACPI_INVALID_PROTOCOL_ID        0x80
 #define ACPI_MAX_PROTOCOL_ID            0x0F
-const u8 acpi_protocol_lengths[] = {
+static const u8 acpi_protocol_lengths[] = {
 	ACPI_INVALID_PROTOCOL_ID,	/* 0 - reserved */
 	ACPI_INVALID_PROTOCOL_ID,	/* 1 - reserved */
 	0x00,			/* 2 - ATTRIB_QUICK */
@@ -96,7 +96,8 @@
  * RETURN:      Status
  *
  * DESCRIPTION: Read from a named field. Returns either an Integer or a
- *              Buffer, depending on the size of the field.
+ *              Buffer, depending on the size of the field and whether if a
+ *              field is created by the create_field() operator.
  *
  ******************************************************************************/
 
@@ -154,12 +155,17 @@
 	 * the use of arithmetic operators on the returned value if the
 	 * field size is equal or smaller than an Integer.
 	 *
+	 * However, all buffer fields created by create_field operator needs to
+	 * remain as a buffer to match other AML interpreter implementations.
+	 *
 	 * Note: Field.length is in bits.
 	 */
 	buffer_length =
 	    (acpi_size)ACPI_ROUND_BITS_UP_TO_BYTES(obj_desc->field.bit_length);
 
-	if (buffer_length > acpi_gbl_integer_byte_width) {
+	if (buffer_length > acpi_gbl_integer_byte_width ||
+	    (obj_desc->common.type == ACPI_TYPE_BUFFER_FIELD &&
+	     obj_desc->buffer_field.is_create_field)) {
 
 		/* Field is too large for an Integer, create a Buffer instead */
 
@@ -320,12 +326,7 @@
 		       obj_desc->field.base_byte_offset,
 		       source_desc->buffer.pointer, data_length);
 
-		if ((obj_desc->field.region_obj->region.address ==
-		     PCC_MASTER_SUBSPACE
-		     && MASTER_SUBSPACE_COMMAND(obj_desc->field.
-						base_byte_offset))
-		    || GENERIC_SUBSPACE_COMMAND(obj_desc->field.
-						base_byte_offset)) {
+		if (MASTER_SUBSPACE_COMMAND(obj_desc->field.base_byte_offset)) {
 
 			/* Perform the write */
 
diff --git a/drivers/acpi/acpica/exfldio.c b/drivers/acpi/acpica/exfldio.c
index 95a0dcb..ade35ff 100644
--- a/drivers/acpi/acpica/exfldio.c
+++ b/drivers/acpi/acpica/exfldio.c
@@ -3,7 +3,7 @@
  *
  * Module Name: exfldio - Aml Field I/O
  *
- * Copyright (C) 2000 - 2019, Intel Corp.
+ * Copyright (C) 2000 - 2020, Intel Corp.
  *
  *****************************************************************************/
 
diff --git a/drivers/acpi/acpica/exmisc.c b/drivers/acpi/acpica/exmisc.c
index 60e8549..717e399 100644
--- a/drivers/acpi/acpica/exmisc.c
+++ b/drivers/acpi/acpica/exmisc.c
@@ -3,7 +3,7 @@
  *
  * Module Name: exmisc - ACPI AML (p-code) execution - specific opcodes
  *
- * Copyright (C) 2000 - 2019, Intel Corp.
+ * Copyright (C) 2000 - 2020, Intel Corp.
  *
  *****************************************************************************/
 
diff --git a/drivers/acpi/acpica/exmutex.c b/drivers/acpi/acpica/exmutex.c
index 775cd62..9ff247c 100644
--- a/drivers/acpi/acpica/exmutex.c
+++ b/drivers/acpi/acpica/exmutex.c
@@ -3,7 +3,7 @@
  *
  * Module Name: exmutex - ASL Mutex Acquire/Release functions
  *
- * Copyright (C) 2000 - 2019, Intel Corp.
+ * Copyright (C) 2000 - 2020, Intel Corp.
  *
  *****************************************************************************/
 
diff --git a/drivers/acpi/acpica/exnames.c b/drivers/acpi/acpica/exnames.c
index 6b76be5..74f8b0d 100644
--- a/drivers/acpi/acpica/exnames.c
+++ b/drivers/acpi/acpica/exnames.c
@@ -3,7 +3,7 @@
  *
  * Module Name: exnames - interpreter/scanner name load/execute
  *
- * Copyright (C) 2000 - 2019, Intel Corp.
+ * Copyright (C) 2000 - 2020, Intel Corp.
  *
  *****************************************************************************/
 
diff --git a/drivers/acpi/acpica/exoparg1.c b/drivers/acpi/acpica/exoparg1.c
index 06e35ea..9d67dfd 100644
--- a/drivers/acpi/acpica/exoparg1.c
+++ b/drivers/acpi/acpica/exoparg1.c
@@ -3,7 +3,7 @@
  *
  * Module Name: exoparg1 - AML execution - opcodes with 1 argument
  *
- * Copyright (C) 2000 - 2019, Intel Corp.
+ * Copyright (C) 2000 - 2020, Intel Corp.
  *
  *****************************************************************************/
 
@@ -1007,7 +1007,8 @@
 						    (walk_state, return_desc,
 						     &temp_desc);
 						if (ACPI_FAILURE(status)) {
-							goto cleanup;
+							return_ACPI_STATUS
+							    (status);
 						}
 
 						return_desc = temp_desc;
diff --git a/drivers/acpi/acpica/exoparg2.c b/drivers/acpi/acpica/exoparg2.c
index 5e4a31a..03241d1 100644
--- a/drivers/acpi/acpica/exoparg2.c
+++ b/drivers/acpi/acpica/exoparg2.c
@@ -3,7 +3,7 @@
  *
  * Module Name: exoparg2 - AML execution - opcodes with 2 arguments
  *
- * Copyright (C) 2000 - 2019, Intel Corp.
+ * Copyright (C) 2000 - 2020, Intel Corp.
  *
  *****************************************************************************/
 
diff --git a/drivers/acpi/acpica/exoparg3.c b/drivers/acpi/acpica/exoparg3.c
index a4ebce4..c8d0d75 100644
--- a/drivers/acpi/acpica/exoparg3.c
+++ b/drivers/acpi/acpica/exoparg3.c
@@ -3,7 +3,7 @@
  *
  * Module Name: exoparg3 - AML execution - opcodes with 3 arguments
  *
- * Copyright (C) 2000 - 2019, Intel Corp.
+ * Copyright (C) 2000 - 2020, Intel Corp.
  *
  *****************************************************************************/
 
diff --git a/drivers/acpi/acpica/exoparg6.c b/drivers/acpi/acpica/exoparg6.c
index 31385a0..55d0fa0 100644
--- a/drivers/acpi/acpica/exoparg6.c
+++ b/drivers/acpi/acpica/exoparg6.c
@@ -3,7 +3,7 @@
  *
  * Module Name: exoparg6 - AML execution - opcodes with 6 arguments
  *
- * Copyright (C) 2000 - 2019, Intel Corp.
+ * Copyright (C) 2000 - 2020, Intel Corp.
  *
  *****************************************************************************/
 
diff --git a/drivers/acpi/acpica/exprep.c b/drivers/acpi/acpica/exprep.c
index 85f799c..4a0f031 100644
--- a/drivers/acpi/acpica/exprep.c
+++ b/drivers/acpi/acpica/exprep.c
@@ -3,7 +3,7 @@
  *
  * Module Name: exprep - ACPI AML field prep utilities
  *
- * Copyright (C) 2000 - 2019, Intel Corp.
+ * Copyright (C) 2000 - 2020, Intel Corp.
  *
  *****************************************************************************/
 
diff --git a/drivers/acpi/acpica/exregion.c b/drivers/acpi/acpica/exregion.c
index c085211..4914dbc 100644
--- a/drivers/acpi/acpica/exregion.c
+++ b/drivers/acpi/acpica/exregion.c
@@ -3,7 +3,7 @@
  *
  * Module Name: exregion - ACPI default op_region (address space) handlers
  *
- * Copyright (C) 2000 - 2019, Intel Corp.
+ * Copyright (C) 2000 - 2020, Intel Corp.
  *
  *****************************************************************************/
 
@@ -41,6 +41,7 @@
 	acpi_status status = AE_OK;
 	void *logical_addr_ptr = NULL;
 	struct acpi_mem_space_context *mem_info = region_context;
+	struct acpi_mem_mapping *mm = mem_info->cur_mm;
 	u32 length;
 	acpi_size map_length;
 	acpi_size page_boundary_map_length;
@@ -96,20 +97,37 @@
 	 * Is 1) Address below the current mapping? OR
 	 *    2) Address beyond the current mapping?
 	 */
-	if ((address < mem_info->mapped_physical_address) ||
-	    (((u64) address + length) > ((u64)
-					 mem_info->mapped_physical_address +
-					 mem_info->mapped_length))) {
+	if (!mm || (address < mm->physical_address) ||
+	    ((u64) address + length > (u64) mm->physical_address + mm->length)) {
 		/*
-		 * The request cannot be resolved by the current memory mapping;
-		 * Delete the existing mapping and create a new one.
+		 * The request cannot be resolved by the current memory mapping.
+		 *
+		 * Look for an existing saved mapping covering the address range
+		 * at hand.  If found, save it as the current one and carry out
+		 * the access.
 		 */
-		if (mem_info->mapped_length) {
+		for (mm = mem_info->first_mm; mm; mm = mm->next_mm) {
+			if (mm == mem_info->cur_mm)
+				continue;
 
-			/* Valid mapping, delete it */
+			if (address < mm->physical_address)
+				continue;
 
-			acpi_os_unmap_memory(mem_info->mapped_logical_address,
-					     mem_info->mapped_length);
+			if ((u64) address + length >
+					(u64) mm->physical_address + mm->length)
+				continue;
+
+			mem_info->cur_mm = mm;
+			goto access;
+		}
+
+		/* Create a new mappings list entry */
+		mm = ACPI_ALLOCATE_ZEROED(sizeof(*mm));
+		if (!mm) {
+			ACPI_ERROR((AE_INFO,
+				    "Unable to save memory mapping at 0x%8.8X%8.8X, size %u",
+				    ACPI_FORMAT_UINT64(address), length));
+			return_ACPI_STATUS(AE_NO_MEMORY);
 		}
 
 		/*
@@ -143,29 +161,39 @@
 
 		/* Create a new mapping starting at the address given */
 
-		mem_info->mapped_logical_address =
-		    acpi_os_map_memory(address, map_length);
-		if (!mem_info->mapped_logical_address) {
+		logical_addr_ptr = acpi_os_map_memory(address, map_length);
+		if (!logical_addr_ptr) {
 			ACPI_ERROR((AE_INFO,
 				    "Could not map memory at 0x%8.8X%8.8X, size %u",
 				    ACPI_FORMAT_UINT64(address),
 				    (u32)map_length));
-			mem_info->mapped_length = 0;
+			ACPI_FREE(mm);
 			return_ACPI_STATUS(AE_NO_MEMORY);
 		}
 
 		/* Save the physical address and mapping size */
 
-		mem_info->mapped_physical_address = address;
-		mem_info->mapped_length = map_length;
+		mm->logical_address = logical_addr_ptr;
+		mm->physical_address = address;
+		mm->length = map_length;
+
+		/*
+		 * Add the new entry to the mappigs list and save it as the
+		 * current mapping.
+		 */
+		mm->next_mm = mem_info->first_mm;
+		mem_info->first_mm = mm;
+
+		mem_info->cur_mm = mm;
 	}
 
+access:
 	/*
 	 * Generate a logical pointer corresponding to the address we want to
 	 * access
 	 */
-	logical_addr_ptr = mem_info->mapped_logical_address +
-	    ((u64) address - (u64) mem_info->mapped_physical_address);
+	logical_addr_ptr = mm->logical_address +
+		((u64) address - (u64) mm->physical_address);
 
 	ACPI_DEBUG_PRINT((ACPI_DB_INFO,
 			  "System-Memory (width %u) R/W %u Address=%8.8X%8.8X\n",
diff --git a/drivers/acpi/acpica/exresnte.c b/drivers/acpi/acpica/exresnte.c
index b223d01..3e40186 100644
--- a/drivers/acpi/acpica/exresnte.c
+++ b/drivers/acpi/acpica/exresnte.c
@@ -3,7 +3,7 @@
  *
  * Module Name: exresnte - AML Interpreter object resolution
  *
- * Copyright (C) 2000 - 2019, Intel Corp.
+ * Copyright (C) 2000 - 2020, Intel Corp.
  *
  *****************************************************************************/
 
diff --git a/drivers/acpi/acpica/exresolv.c b/drivers/acpi/acpica/exresolv.c
index 36da5c0..912a078 100644
--- a/drivers/acpi/acpica/exresolv.c
+++ b/drivers/acpi/acpica/exresolv.c
@@ -3,7 +3,7 @@
  *
  * Module Name: exresolv - AML Interpreter object resolution
  *
- * Copyright (C) 2000 - 2019, Intel Corp.
+ * Copyright (C) 2000 - 2020, Intel Corp.
  *
  *****************************************************************************/
 
diff --git a/drivers/acpi/acpica/exresop.c b/drivers/acpi/acpica/exresop.c
index bdfe4d3..4d1b229 100644
--- a/drivers/acpi/acpica/exresop.c
+++ b/drivers/acpi/acpica/exresop.c
@@ -3,7 +3,7 @@
  *
  * Module Name: exresop - AML Interpreter operand/object resolution
  *
- * Copyright (C) 2000 - 2019, Intel Corp.
+ * Copyright (C) 2000 - 2020, Intel Corp.
  *
  *****************************************************************************/
 
diff --git a/drivers/acpi/acpica/exserial.c b/drivers/acpi/acpica/exserial.c
index c5aa4b0..760bc7c 100644
--- a/drivers/acpi/acpica/exserial.c
+++ b/drivers/acpi/acpica/exserial.c
@@ -3,7 +3,7 @@
  *
  * Module Name: exserial - field_unit support for serial address spaces
  *
- * Copyright (C) 2000 - 2019, Intel Corp.
+ * Copyright (C) 2000 - 2020, Intel Corp.
  *
  *****************************************************************************/
 
diff --git a/drivers/acpi/acpica/exstore.c b/drivers/acpi/acpica/exstore.c
index 7f3c357..3adc0a2 100644
--- a/drivers/acpi/acpica/exstore.c
+++ b/drivers/acpi/acpica/exstore.c
@@ -3,7 +3,7 @@
  *
  * Module Name: exstore - AML Interpreter object store support
  *
- * Copyright (C) 2000 - 2019, Intel Corp.
+ * Copyright (C) 2000 - 2020, Intel Corp.
  *
  *****************************************************************************/
 
diff --git a/drivers/acpi/acpica/exstoren.c b/drivers/acpi/acpica/exstoren.c
index 4e43c82..8c34f4e 100644
--- a/drivers/acpi/acpica/exstoren.c
+++ b/drivers/acpi/acpica/exstoren.c
@@ -4,7 +4,7 @@
  * Module Name: exstoren - AML Interpreter object store support,
  *                        Store to Node (namespace object)
  *
- * Copyright (C) 2000 - 2019, Intel Corp.
+ * Copyright (C) 2000 - 2020, Intel Corp.
  *
  *****************************************************************************/
 
diff --git a/drivers/acpi/acpica/exstorob.c b/drivers/acpi/acpica/exstorob.c
index dc9e2b1..dc66696 100644
--- a/drivers/acpi/acpica/exstorob.c
+++ b/drivers/acpi/acpica/exstorob.c
@@ -3,7 +3,7 @@
  *
  * Module Name: exstorob - AML object store support, store to object
  *
- * Copyright (C) 2000 - 2019, Intel Corp.
+ * Copyright (C) 2000 - 2020, Intel Corp.
  *
  *****************************************************************************/
 
diff --git a/drivers/acpi/acpica/exsystem.c b/drivers/acpi/acpica/exsystem.c
index a538f77..f329b01 100644
--- a/drivers/acpi/acpica/exsystem.c
+++ b/drivers/acpi/acpica/exsystem.c
@@ -3,7 +3,7 @@
  *
  * Module Name: exsystem - Interface to OS services
  *
- * Copyright (C) 2000 - 2019, Intel Corp.
+ * Copyright (C) 2000 - 2020, Intel Corp.
  *
  *****************************************************************************/
 
diff --git a/drivers/acpi/acpica/extrace.c b/drivers/acpi/acpica/extrace.c
index db7f93c..832a478 100644
--- a/drivers/acpi/acpica/extrace.c
+++ b/drivers/acpi/acpica/extrace.c
@@ -3,7 +3,7 @@
  *
  * Module Name: extrace - Support for interpreter execution tracing
  *
- * Copyright (C) 2000 - 2019, Intel Corp.
+ * Copyright (C) 2000 - 2020, Intel Corp.
  *
  *****************************************************************************/
 
diff --git a/drivers/acpi/acpica/exutils.c b/drivers/acpi/acpica/exutils.c
index 75380be..8fefa6f 100644
--- a/drivers/acpi/acpica/exutils.c
+++ b/drivers/acpi/acpica/exutils.c
@@ -3,7 +3,7 @@
  *
  * Module Name: exutils - interpreter/scanner utilities
  *
- * Copyright (C) 2000 - 2019, Intel Corp.
+ * Copyright (C) 2000 - 2020, Intel Corp.
  *
  *****************************************************************************/
 
diff --git a/drivers/acpi/acpica/hwacpi.c b/drivers/acpi/acpica/hwacpi.c
index 926f7e0..9b9aac2 100644
--- a/drivers/acpi/acpica/hwacpi.c
+++ b/drivers/acpi/acpica/hwacpi.c
@@ -3,7 +3,7 @@
  *
  * Module Name: hwacpi - ACPI Hardware Initialization/Mode Interface
  *
- * Copyright (C) 2000 - 2019, Intel Corp.
+ * Copyright (C) 2000 - 2020, Intel Corp.
  *
  *****************************************************************************/
 
diff --git a/drivers/acpi/acpica/hwesleep.c b/drivers/acpi/acpica/hwesleep.c
index dee3aff..142a755 100644
--- a/drivers/acpi/acpica/hwesleep.c
+++ b/drivers/acpi/acpica/hwesleep.c
@@ -4,7 +4,7 @@
  * Name: hwesleep.c - ACPI Hardware Sleep/Wake Support functions for the
  *                    extended FADT-V5 sleep registers.
  *
- * Copyright (C) 2000 - 2019, Intel Corp.
+ * Copyright (C) 2000 - 2020, Intel Corp.
  *
  *****************************************************************************/
 
@@ -104,7 +104,9 @@
 
 	/* Flush caches, as per ACPI specification */
 
-	ACPI_FLUSH_CPU_CACHE();
+	if (sleep_state < ACPI_STATE_S4) {
+		ACPI_FLUSH_CPU_CACHE();
+	}
 
 	status = acpi_os_enter_sleep(sleep_state, sleep_control, 0);
 	if (status == AE_CTRL_TERMINATE) {
@@ -147,17 +149,13 @@
 
 acpi_status acpi_hw_extended_wake_prep(u8 sleep_state)
 {
-	acpi_status status;
 	u8 sleep_type_value;
 
 	ACPI_FUNCTION_TRACE(hw_extended_wake_prep);
 
-	status = acpi_get_sleep_type_data(ACPI_STATE_S0,
-					  &acpi_gbl_sleep_type_a,
-					  &acpi_gbl_sleep_type_b);
-	if (ACPI_SUCCESS(status)) {
+	if (acpi_gbl_sleep_type_a_s0 != ACPI_SLEEP_TYPE_INVALID) {
 		sleep_type_value =
-		    ((acpi_gbl_sleep_type_a << ACPI_X_SLEEP_TYPE_POSITION) &
+		    ((acpi_gbl_sleep_type_a_s0 << ACPI_X_SLEEP_TYPE_POSITION) &
 		     ACPI_X_SLEEP_TYPE_MASK);
 
 		(void)acpi_write((u64)(sleep_type_value | ACPI_X_SLEEP_ENABLE),
diff --git a/drivers/acpi/acpica/hwgpe.c b/drivers/acpi/acpica/hwgpe.c
index 12516b0..b13a4ed 100644
--- a/drivers/acpi/acpica/hwgpe.c
+++ b/drivers/acpi/acpica/hwgpe.c
@@ -3,7 +3,7 @@
  *
  * Module Name: hwgpe - Low level GPE enable/disable/clear functions
  *
- * Copyright (C) 2000 - 2019, Intel Corp.
+ * Copyright (C) 2000 - 2020, Intel Corp.
  *
  *****************************************************************************/
 
@@ -26,6 +26,76 @@
 
 /******************************************************************************
  *
+ * FUNCTION:    acpi_hw_gpe_read
+ *
+ * PARAMETERS:  value               - Where the value is returned
+ *              reg                 - GPE register structure
+ *
+ * RETURN:      Status
+ *
+ * DESCRIPTION: Read from a GPE register in either memory or IO space.
+ *
+ * LIMITATIONS: <These limitations also apply to acpi_hw_gpe_write>
+ *      space_ID must be system_memory or system_IO.
+ *
+ ******************************************************************************/
+
+acpi_status acpi_hw_gpe_read(u64 *value, struct acpi_gpe_address *reg)
+{
+	acpi_status status;
+	u32 value32;
+
+	if (reg->space_id == ACPI_ADR_SPACE_SYSTEM_MEMORY) {
+#ifdef ACPI_GPE_USE_LOGICAL_ADDRESSES
+		*value = (u64)ACPI_GET8((unsigned long)reg->address);
+		return_ACPI_STATUS(AE_OK);
+#else
+		return acpi_os_read_memory((acpi_physical_address)reg->address,
+					    value, ACPI_GPE_REGISTER_WIDTH);
+#endif
+	}
+
+	status = acpi_os_read_port((acpi_io_address)reg->address,
+				   &value32, ACPI_GPE_REGISTER_WIDTH);
+	if (ACPI_FAILURE(status))
+		return_ACPI_STATUS(status);
+
+	*value = (u64)value32;
+
+	return_ACPI_STATUS(AE_OK);
+}
+
+/******************************************************************************
+ *
+ * FUNCTION:    acpi_hw_gpe_write
+ *
+ * PARAMETERS:  value               - Value to be written
+ *              reg                 - GPE register structure
+ *
+ * RETURN:      Status
+ *
+ * DESCRIPTION: Write to a GPE register in either memory or IO space.
+ *
+ ******************************************************************************/
+
+acpi_status acpi_hw_gpe_write(u64 value, struct acpi_gpe_address *reg)
+{
+	if (reg->space_id == ACPI_ADR_SPACE_SYSTEM_MEMORY) {
+#ifdef ACPI_GPE_USE_LOGICAL_ADDRESSES
+		ACPI_SET8((unsigned long)reg->address, value);
+		return_ACPI_STATUS(AE_OK);
+#else
+		return acpi_os_write_memory((acpi_physical_address)reg->address,
+					    value, ACPI_GPE_REGISTER_WIDTH);
+#endif
+	}
+
+	return acpi_os_write_port((acpi_io_address)reg->address, (u32)value,
+				  ACPI_GPE_REGISTER_WIDTH);
+}
+
+/******************************************************************************
+ *
  * FUNCTION:	acpi_hw_get_gpe_register_bit
  *
  * PARAMETERS:	gpe_event_info	    - Info block for the GPE
@@ -79,7 +149,8 @@
 
 	/* Get current value of the enable register that contains this GPE */
 
-	status = acpi_hw_read(&enable_mask, &gpe_register_info->enable_address);
+	status = acpi_hw_gpe_read(&enable_mask,
+				  &gpe_register_info->enable_address);
 	if (ACPI_FAILURE(status)) {
 		return (status);
 	}
@@ -118,9 +189,8 @@
 
 		/* Write the updated enable mask */
 
-		status =
-		    acpi_hw_write(enable_mask,
-				  &gpe_register_info->enable_address);
+		status = acpi_hw_gpe_write(enable_mask,
+					   &gpe_register_info->enable_address);
 	}
 	return (status);
 }
@@ -158,8 +228,8 @@
 	 */
 	register_bit = acpi_hw_get_gpe_register_bit(gpe_event_info);
 
-	status =
-	    acpi_hw_write(register_bit, &gpe_register_info->status_address);
+	status = acpi_hw_gpe_write(register_bit,
+				   &gpe_register_info->status_address);
 	return (status);
 }
 
@@ -227,7 +297,7 @@
 
 	/* GPE currently enabled (enable bit == 1)? */
 
-	status = acpi_hw_read(&in_byte, &gpe_register_info->enable_address);
+	status = acpi_hw_gpe_read(&in_byte, &gpe_register_info->enable_address);
 	if (ACPI_FAILURE(status)) {
 		return (status);
 	}
@@ -238,7 +308,7 @@
 
 	/* GPE currently active (status bit == 1)? */
 
-	status = acpi_hw_read(&in_byte, &gpe_register_info->status_address);
+	status = acpi_hw_gpe_read(&in_byte, &gpe_register_info->status_address);
 	if (ACPI_FAILURE(status)) {
 		return (status);
 	}
@@ -274,7 +344,8 @@
 
 	gpe_register_info->enable_mask = enable_mask;
 
-	status = acpi_hw_write(enable_mask, &gpe_register_info->enable_address);
+	status = acpi_hw_gpe_write(enable_mask,
+				   &gpe_register_info->enable_address);
 	return (status);
 }
 
@@ -341,9 +412,8 @@
 
 		/* Clear status on all GPEs in this register */
 
-		status =
-		    acpi_hw_write(0xFF,
-				  &gpe_block->register_info[i].status_address);
+		status = acpi_hw_gpe_write(0xFF,
+					   &gpe_block->register_info[i].status_address);
 		if (ACPI_FAILURE(status)) {
 			return (status);
 		}
@@ -481,14 +551,14 @@
 	for (i = 0; i < gpe_block->register_count; i++) {
 		gpe_register_info = &gpe_block->register_info[i];
 
-		status = acpi_hw_read(&in_enable,
-				      &gpe_register_info->enable_address);
+		status = acpi_hw_gpe_read(&in_enable,
+					  &gpe_register_info->enable_address);
 		if (ACPI_FAILURE(status)) {
 			continue;
 		}
 
-		status = acpi_hw_read(&in_status,
-				      &gpe_register_info->status_address);
+		status = acpi_hw_gpe_read(&in_status,
+					  &gpe_register_info->status_address);
 		if (ACPI_FAILURE(status)) {
 			continue;
 		}
diff --git a/drivers/acpi/acpica/hwsleep.c b/drivers/acpi/acpica/hwsleep.c
index b62db8e..6a20bb5 100644
--- a/drivers/acpi/acpica/hwsleep.c
+++ b/drivers/acpi/acpica/hwsleep.c
@@ -4,7 +4,7 @@
  * Name: hwsleep.c - ACPI Hardware Sleep/Wake Support functions for the
  *                   original/legacy sleep/PM registers.
  *
- * Copyright (C) 2000 - 2019, Intel Corp.
+ * Copyright (C) 2000 - 2020, Intel Corp.
  *
  *****************************************************************************/
 
@@ -110,7 +110,9 @@
 
 	/* Flush caches, as per ACPI specification */
 
-	ACPI_FLUSH_CPU_CACHE();
+	if (sleep_state < ACPI_STATE_S4) {
+		ACPI_FLUSH_CPU_CACHE();
+	}
 
 	status = acpi_os_enter_sleep(sleep_state, pm1a_control, pm1b_control);
 	if (status == AE_CTRL_TERMINATE) {
@@ -179,7 +181,7 @@
 
 acpi_status acpi_hw_legacy_wake_prep(u8 sleep_state)
 {
-	acpi_status status;
+	acpi_status status = AE_OK;
 	struct acpi_bit_register_info *sleep_type_reg_info;
 	struct acpi_bit_register_info *sleep_enable_reg_info;
 	u32 pm1a_control;
@@ -192,10 +194,7 @@
 	 * This is unclear from the ACPI Spec, but it is required
 	 * by some machines.
 	 */
-	status = acpi_get_sleep_type_data(ACPI_STATE_S0,
-					  &acpi_gbl_sleep_type_a,
-					  &acpi_gbl_sleep_type_b);
-	if (ACPI_SUCCESS(status)) {
+	if (acpi_gbl_sleep_type_a_s0 != ACPI_SLEEP_TYPE_INVALID) {
 		sleep_type_reg_info =
 		    acpi_hw_get_bit_register_info(ACPI_BITREG_SLEEP_TYPE);
 		sleep_enable_reg_info =
@@ -216,9 +215,9 @@
 
 			/* Insert the SLP_TYP bits */
 
-			pm1a_control |= (acpi_gbl_sleep_type_a <<
+			pm1a_control |= (acpi_gbl_sleep_type_a_s0 <<
 					 sleep_type_reg_info->bit_position);
-			pm1b_control |= (acpi_gbl_sleep_type_b <<
+			pm1b_control |= (acpi_gbl_sleep_type_b_s0 <<
 					 sleep_type_reg_info->bit_position);
 
 			/* Write the control registers and ignore any errors */
@@ -300,6 +299,18 @@
 				    [ACPI_EVENT_POWER_BUTTON].
 				    status_register_id, ACPI_CLEAR_STATUS);
 
+	/* Enable sleep button */
+
+	(void)
+	    acpi_write_bit_register(acpi_gbl_fixed_event_info
+				    [ACPI_EVENT_SLEEP_BUTTON].
+				    enable_register_id, ACPI_ENABLE_EVENT);
+
+	(void)
+	    acpi_write_bit_register(acpi_gbl_fixed_event_info
+				    [ACPI_EVENT_SLEEP_BUTTON].
+				    status_register_id, ACPI_CLEAR_STATUS);
+
 	acpi_hw_execute_sleep_method(METHOD_PATHNAME__SST, ACPI_SST_WORKING);
 	return_ACPI_STATUS(status);
 }
diff --git a/drivers/acpi/acpica/hwtimer.c b/drivers/acpi/acpica/hwtimer.c
index 2fb9f75..07473dd 100644
--- a/drivers/acpi/acpica/hwtimer.c
+++ b/drivers/acpi/acpica/hwtimer.c
@@ -3,7 +3,7 @@
  *
  * Name: hwtimer.c - ACPI Power Management Timer Interface
  *
- * Copyright (C) 2000 - 2019, Intel Corp.
+ * Copyright (C) 2000 - 2020, Intel Corp.
  *
  *****************************************************************************/
 
diff --git a/drivers/acpi/acpica/hwvalid.c b/drivers/acpi/acpica/hwvalid.c
index cd57615..b2ca7df 100644
--- a/drivers/acpi/acpica/hwvalid.c
+++ b/drivers/acpi/acpica/hwvalid.c
@@ -3,7 +3,7 @@
  *
  * Module Name: hwvalid - I/O request validation
  *
- * Copyright (C) 2000 - 2019, Intel Corp.
+ * Copyright (C) 2000 - 2020, Intel Corp.
  *
  *****************************************************************************/
 
@@ -292,3 +292,33 @@
 
 	return (AE_OK);
 }
+
+/******************************************************************************
+ *
+ * FUNCTION:    acpi_hw_validate_io_block
+ *
+ * PARAMETERS:  Address             Address of I/O port/register blobk
+ *              bit_width           Number of bits (8,16,32) in each register
+ *              count               Number of registers in the block
+ *
+ * RETURN:      Status
+ *
+ * DESCRIPTION: Validates a block of I/O ports/registers.
+ *
+ ******************************************************************************/
+
+acpi_status acpi_hw_validate_io_block(u64 address, u32 bit_width, u32 count)
+{
+	acpi_status status;
+
+	while (count--) {
+		status = acpi_hw_validate_io_request((acpi_io_address)address,
+						     bit_width);
+		if (ACPI_FAILURE(status))
+			return_ACPI_STATUS(status);
+
+		address += ACPI_DIV_8(bit_width);
+	}
+
+	return_ACPI_STATUS(AE_OK);
+}
diff --git a/drivers/acpi/acpica/hwxface.c b/drivers/acpi/acpica/hwxface.c
index c4fd971..134dbfa 100644
--- a/drivers/acpi/acpica/hwxface.c
+++ b/drivers/acpi/acpica/hwxface.c
@@ -3,7 +3,7 @@
  *
  * Module Name: hwxface - Public ACPICA hardware interfaces
  *
- * Copyright (C) 2000 - 2019, Intel Corp.
+ * Copyright (C) 2000 - 2020, Intel Corp.
  *
  *****************************************************************************/
 
diff --git a/drivers/acpi/acpica/hwxfsleep.c b/drivers/acpi/acpica/hwxfsleep.c
index abbf970..3948c34 100644
--- a/drivers/acpi/acpica/hwxfsleep.c
+++ b/drivers/acpi/acpica/hwxfsleep.c
@@ -3,7 +3,7 @@
  *
  * Name: hwxfsleep.c - ACPI Hardware Sleep/Wake External Interfaces
  *
- * Copyright (C) 2000 - 2019, Intel Corp.
+ * Copyright (C) 2000 - 2020, Intel Corp.
  *
  *****************************************************************************/
 
@@ -162,10 +162,11 @@
 		return_ACPI_STATUS(status);
 	}
 
-	ACPI_FLUSH_CPU_CACHE();
-
 	status = acpi_hw_write_port(acpi_gbl_FADT.smi_command,
 				    (u32)acpi_gbl_FADT.s4_bios_request, 8);
+	if (ACPI_FAILURE(status)) {
+		return_ACPI_STATUS(status);
+	}
 
 	do {
 		acpi_os_stall(ACPI_USEC_PER_MSEC);
@@ -214,6 +215,13 @@
 		return_ACPI_STATUS(status);
 	}
 
+	status = acpi_get_sleep_type_data(ACPI_STATE_S0,
+					  &acpi_gbl_sleep_type_a_s0,
+					  &acpi_gbl_sleep_type_b_s0);
+	if (ACPI_FAILURE(status)) {
+		acpi_gbl_sleep_type_a_s0 = ACPI_SLEEP_TYPE_INVALID;
+	}
+
 	/* Execute the _PTS method (Prepare To Sleep) */
 
 	arg_list.count = 1;
diff --git a/drivers/acpi/acpica/nsaccess.c b/drivers/acpi/acpica/nsaccess.c
index 3f045b5..a0c1a66 100644
--- a/drivers/acpi/acpica/nsaccess.c
+++ b/drivers/acpi/acpica/nsaccess.c
@@ -99,13 +99,12 @@
 		 * just create and link the new node(s) here.
 		 */
 		new_node =
-		    ACPI_ALLOCATE_ZEROED(sizeof(struct acpi_namespace_node));
+		    acpi_ns_create_node(*ACPI_CAST_PTR(u32, init_val->name));
 		if (!new_node) {
 			status = AE_NO_MEMORY;
 			goto unlock_and_exit;
 		}
 
-		ACPI_COPY_NAMESEG(new_node->name.ascii, init_val->name);
 		new_node->descriptor_type = ACPI_DESC_TYPE_NAMED;
 		new_node->type = init_val->type;
 
diff --git a/drivers/acpi/acpica/nsalloc.c b/drivers/acpi/acpica/nsalloc.c
index fe9b363..83d26ab 100644
--- a/drivers/acpi/acpica/nsalloc.c
+++ b/drivers/acpi/acpica/nsalloc.c
@@ -294,7 +294,7 @@
 		node_to_delete = next_node;
 		next_node = next_node->peer;
 		acpi_ns_delete_node(node_to_delete);
-	};
+	}
 
 	/* Clear the parent's child pointer */
 
diff --git a/drivers/acpi/acpica/nsarguments.c b/drivers/acpi/acpica/nsarguments.c
index 0e97ed3..6bbc7d3 100644
--- a/drivers/acpi/acpica/nsarguments.c
+++ b/drivers/acpi/acpica/nsarguments.c
@@ -3,7 +3,7 @@
  *
  * Module Name: nsarguments - Validation of args for ACPI predefined methods
  *
- * Copyright (C) 2000 - 2019, Intel Corp.
+ * Copyright (C) 2000 - 2020, Intel Corp.
  *
  *****************************************************************************/
 
@@ -55,7 +55,9 @@
 		arg_type = METHOD_GET_NEXT_TYPE(arg_type_list);
 		user_arg_type = info->parameters[i]->common.type;
 
-		if (user_arg_type != arg_type) {
+		/* No typechecking for ACPI_TYPE_ANY */
+
+		if ((user_arg_type != arg_type) && (arg_type != ACPI_TYPE_ANY)) {
 			ACPI_WARN_PREDEFINED((AE_INFO, info->full_pathname,
 					      ACPI_WARN_ALWAYS,
 					      "Argument #%u type mismatch - "
diff --git a/drivers/acpi/acpica/nsconvert.c b/drivers/acpi/acpica/nsconvert.c
index 14cbf63..c86c829 100644
--- a/drivers/acpi/acpica/nsconvert.c
+++ b/drivers/acpi/acpica/nsconvert.c
@@ -4,7 +4,7 @@
  * Module Name: nsconvert - Object conversions for objects returned by
  *                          predefined methods
  *
- * Copyright (C) 2000 - 2019, Intel Corp.
+ * Copyright (C) 2000 - 2020, Intel Corp.
  *
  *****************************************************************************/
 
@@ -486,5 +486,5 @@
 error_exit:
 	ACPI_FREE(name);
 	*return_object = new_object;
-	return (AE_OK);
+	return (status);
 }
diff --git a/drivers/acpi/acpica/nsdump.c b/drivers/acpi/acpica/nsdump.c
index 9731d7c..994f0b5 100644
--- a/drivers/acpi/acpica/nsdump.c
+++ b/drivers/acpi/acpica/nsdump.c
@@ -3,7 +3,7 @@
  *
  * Module Name: nsdump - table dumping routines for debug
  *
- * Copyright (C) 2000 - 2019, Intel Corp.
+ * Copyright (C) 2000 - 2020, Intel Corp.
  *
  *****************************************************************************/
 
@@ -291,7 +291,7 @@
 					for (i = 0;
 					     (i < obj_desc->buffer.length
 					      && i < 12); i++) {
-						acpi_os_printf(" %.2hX",
+						acpi_os_printf(" %2.2X",
 							       obj_desc->buffer.
 							       pointer[i]);
 					}
@@ -404,7 +404,7 @@
 		case ACPI_TYPE_LOCAL_BANK_FIELD:
 		case ACPI_TYPE_LOCAL_INDEX_FIELD:
 
-			acpi_os_printf(" Off %.3X Len %.2X Acc %.2hd\n",
+			acpi_os_printf(" Off %.3X Len %.2X Acc %.2X\n",
 				       (obj_desc->common_field.
 					base_byte_offset * 8)
 				       +
@@ -589,8 +589,6 @@
 
 			goto cleanup;
 		}
-
-		obj_type = ACPI_TYPE_INVALID;	/* Terminate loop after next pass */
 	}
 
 cleanup:
diff --git a/drivers/acpi/acpica/nsdumpdv.c b/drivers/acpi/acpica/nsdumpdv.c
index 73e5c83..b691fe2 100644
--- a/drivers/acpi/acpica/nsdumpdv.c
+++ b/drivers/acpi/acpica/nsdumpdv.c
@@ -3,7 +3,7 @@
  *
  * Module Name: nsdump - table dumping routines for debug
  *
- * Copyright (C) 2000 - 2019, Intel Corp.
+ * Copyright (C) 2000 - 2020, Intel Corp.
  *
  *****************************************************************************/
 
diff --git a/drivers/acpi/acpica/nsinit.c b/drivers/acpi/acpica/nsinit.c
index 61e9dfc..e16f6a0 100644
--- a/drivers/acpi/acpica/nsinit.c
+++ b/drivers/acpi/acpica/nsinit.c
@@ -3,7 +3,7 @@
  *
  * Module Name: nsinit - namespace initialization
  *
- * Copyright (C) 2000 - 2019, Intel Corp.
+ * Copyright (C) 2000 - 2020, Intel Corp.
  *
  *****************************************************************************/
 
diff --git a/drivers/acpi/acpica/nsload.c b/drivers/acpi/acpica/nsload.c
index d7c4d6e..9ba1789 100644
--- a/drivers/acpi/acpica/nsload.c
+++ b/drivers/acpi/acpica/nsload.c
@@ -3,7 +3,7 @@
  *
  * Module Name: nsload - namespace loading/expanding/contracting procedures
  *
- * Copyright (C) 2000 - 2019, Intel Corp.
+ * Copyright (C) 2000 - 2020, Intel Corp.
  *
  *****************************************************************************/
 
diff --git a/drivers/acpi/acpica/nsnames.c b/drivers/acpi/acpica/nsnames.c
index c717fff..d91153f 100644
--- a/drivers/acpi/acpica/nsnames.c
+++ b/drivers/acpi/acpica/nsnames.c
@@ -160,7 +160,7 @@
 	/* Build the path in the caller buffer */
 
 	(void)acpi_ns_build_normalized_path(node, buffer->pointer,
-					    required_size, no_trailing);
+					    (u32)required_size, no_trailing);
 
 	ACPI_DEBUG_PRINT((ACPI_DB_EXEC, "%s [%X]\n",
 			  (char *)buffer->pointer, (u32) required_size));
@@ -311,7 +311,7 @@
 
 	/* Build the path in the allocated buffer */
 
-	(void)acpi_ns_build_normalized_path(node, name_buffer, size,
+	(void)acpi_ns_build_normalized_path(node, name_buffer, (u32)size,
 					    no_trailing);
 
 	ACPI_DEBUG_PRINT_RAW((ACPI_DB_NAMES, "%s: Path \"%s\"\n",
@@ -342,7 +342,7 @@
 	char *full_path = NULL;
 	char *external_path = NULL;
 	char *prefix_path = NULL;
-	u32 prefix_path_length = 0;
+	acpi_size prefix_path_length = 0;
 
 	/* If there is a prefix, get the pathname to it */
 
diff --git a/drivers/acpi/acpica/nsparse.c b/drivers/acpi/acpica/nsparse.c
index f16cf5e..7e74a76 100644
--- a/drivers/acpi/acpica/nsparse.c
+++ b/drivers/acpi/acpica/nsparse.c
@@ -3,7 +3,7 @@
  *
  * Module Name: nsparse - namespace interface to AML parser
  *
- * Copyright (C) 2000 - 2019, Intel Corp.
+ * Copyright (C) 2000 - 2020, Intel Corp.
  *
  *****************************************************************************/
 
diff --git a/drivers/acpi/acpica/nspredef.c b/drivers/acpi/acpica/nspredef.c
index 2f9d931..0cea9c3 100644
--- a/drivers/acpi/acpica/nspredef.c
+++ b/drivers/acpi/acpica/nspredef.c
@@ -3,7 +3,7 @@
  *
  * Module Name: nspredef - Validation of ACPI predefined methods and objects
  *
- * Copyright (C) 2000 - 2019, Intel Corp.
+ * Copyright (C) 2000 - 2020, Intel Corp.
  *
  *****************************************************************************/
 
diff --git a/drivers/acpi/acpica/nsprepkg.c b/drivers/acpi/acpica/nsprepkg.c
index 9a80e3b..237b3dd 100644
--- a/drivers/acpi/acpica/nsprepkg.c
+++ b/drivers/acpi/acpica/nsprepkg.c
@@ -3,7 +3,7 @@
  *
  * Module Name: nsprepkg - Validation of package objects for predefined names
  *
- * Copyright (C) 2000 - 2019, Intel Corp.
+ * Copyright (C) 2000 - 2020, Intel Corp.
  *
  *****************************************************************************/
 
diff --git a/drivers/acpi/acpica/nsrepair.c b/drivers/acpi/acpica/nsrepair.c
index be86fea..90db2d8 100644
--- a/drivers/acpi/acpica/nsrepair.c
+++ b/drivers/acpi/acpica/nsrepair.c
@@ -3,7 +3,7 @@
  *
  * Module Name: nsrepair - Repair for objects returned by predefined methods
  *
- * Copyright (C) 2000 - 2019, Intel Corp.
+ * Copyright (C) 2000 - 2020, Intel Corp.
  *
  *****************************************************************************/
 
diff --git a/drivers/acpi/acpica/nsrepair2.c b/drivers/acpi/acpica/nsrepair2.c
index 663d85e..125143c 100644
--- a/drivers/acpi/acpica/nsrepair2.c
+++ b/drivers/acpi/acpica/nsrepair2.c
@@ -4,7 +4,7 @@
  * Module Name: nsrepair2 - Repair for objects returned by specific
  *                          predefined methods
  *
- * Copyright (C) 2000 - 2019, Intel Corp.
+ * Copyright (C) 2000 - 2020, Intel Corp.
  *
  *****************************************************************************/
 
diff --git a/drivers/acpi/acpica/nsutils.c b/drivers/acpi/acpica/nsutils.c
index b8d007c..e66abda 100644
--- a/drivers/acpi/acpica/nsutils.c
+++ b/drivers/acpi/acpica/nsutils.c
@@ -4,7 +4,7 @@
  * Module Name: nsutils - Utilities for accessing ACPI namespace, accessing
  *                        parents and siblings and Scope manipulation
  *
- * Copyright (C) 2000 - 2019, Intel Corp.
+ * Copyright (C) 2000 - 2020, Intel Corp.
  *
  *****************************************************************************/
 
diff --git a/drivers/acpi/acpica/nswalk.c b/drivers/acpi/acpica/nswalk.c
index ceea6af..b7f3e86 100644
--- a/drivers/acpi/acpica/nswalk.c
+++ b/drivers/acpi/acpica/nswalk.c
@@ -3,7 +3,7 @@
  *
  * Module Name: nswalk - Functions for walking the ACPI namespace
  *
- * Copyright (C) 2000 - 2019, Intel Corp.
+ * Copyright (C) 2000 - 2020, Intel Corp.
  *
  *****************************************************************************/
 
diff --git a/drivers/acpi/acpica/nsxfname.c b/drivers/acpi/acpica/nsxfname.c
index 55b4a5b..0e6aba8 100644
--- a/drivers/acpi/acpica/nsxfname.c
+++ b/drivers/acpi/acpica/nsxfname.c
@@ -4,7 +4,7 @@
  * Module Name: nsxfname - Public interfaces to the ACPI subsystem
  *                         ACPI Namespace oriented interfaces
  *
- * Copyright (C) 2000 - 2019, Intel Corp.
+ * Copyright (C) 2000 - 2020, Intel Corp.
  *
  *****************************************************************************/
 
@@ -425,8 +425,8 @@
 	}
 
 	if (cls) {
-		next_id_string = acpi_ns_copy_device_id(&info->class_code,
-							cls, next_id_string);
+		(void)acpi_ns_copy_device_id(&info->class_code,
+					     cls, next_id_string);
 	}
 
 	/* Copy the fixed-length data */
@@ -516,7 +516,7 @@
 
 	method_flags = *parser_state.aml++;
 	aml_start = parser_state.aml;
-	aml_length = ACPI_PTR_DIFF(parser_state.pkg_end, aml_start);
+	aml_length = (u32)ACPI_PTR_DIFF(parser_state.pkg_end, aml_start);
 
 	/*
 	 * Allocate resources up-front. We don't want to have to delete a new
diff --git a/drivers/acpi/acpica/nsxfobj.c b/drivers/acpi/acpica/nsxfobj.c
index c022bef..3242694 100644
--- a/drivers/acpi/acpica/nsxfobj.c
+++ b/drivers/acpi/acpica/nsxfobj.c
@@ -24,7 +24,8 @@
  *
  * RETURN:      Status
  *
- * DESCRIPTION: This routine returns the type associatd with a particular handle
+ * DESCRIPTION: This routine returns the type associated with a particular
+ *              handle
  *
  ******************************************************************************/
 acpi_status acpi_get_type(acpi_handle handle, acpi_object_type *ret_type)
diff --git a/drivers/acpi/acpica/psargs.c b/drivers/acpi/acpica/psargs.c
index e62c789..3b40db4 100644
--- a/drivers/acpi/acpica/psargs.c
+++ b/drivers/acpi/acpica/psargs.c
@@ -3,7 +3,7 @@
  *
  * Module Name: psargs - Parse AML opcode arguments
  *
- * Copyright (C) 2000 - 2019, Intel Corp.
+ * Copyright (C) 2000 - 2020, Intel Corp.
  *
  *****************************************************************************/
 
diff --git a/drivers/acpi/acpica/psloop.c b/drivers/acpi/acpica/psloop.c
index 2078050..3cf0687 100644
--- a/drivers/acpi/acpica/psloop.c
+++ b/drivers/acpi/acpica/psloop.c
@@ -3,7 +3,7 @@
  *
  * Module Name: psloop - Main AML parse loop
  *
- * Copyright (C) 2000 - 2019, Intel Corp.
+ * Copyright (C) 2000 - 2020, Intel Corp.
  *
  *****************************************************************************/
 
diff --git a/drivers/acpi/acpica/psobject.c b/drivers/acpi/acpica/psobject.c
index 98e5c74..2480c26 100644
--- a/drivers/acpi/acpica/psobject.c
+++ b/drivers/acpi/acpica/psobject.c
@@ -3,7 +3,7 @@
  *
  * Module Name: psobject - Support for parse objects
  *
- * Copyright (C) 2000 - 2019, Intel Corp.
+ * Copyright (C) 2000 - 2020, Intel Corp.
  *
  *****************************************************************************/
 
@@ -481,8 +481,7 @@
 			walk_state->opcode = (*op)->common.aml_opcode;
 
 			status = walk_state->ascending_callback(walk_state);
-			status =
-			    acpi_ps_next_parse_state(walk_state, *op, status);
+			(void)acpi_ps_next_parse_state(walk_state, *op, status);
 
 			status2 = acpi_ps_complete_this_op(walk_state, *op);
 			if (ACPI_FAILURE(status2)) {
@@ -490,7 +489,6 @@
 			}
 		}
 
-		status = AE_OK;
 		break;
 
 	case AE_CTRL_BREAK:
@@ -512,14 +510,13 @@
 		walk_state->opcode = (*op)->common.aml_opcode;
 
 		status = walk_state->ascending_callback(walk_state);
-		status = acpi_ps_next_parse_state(walk_state, *op, status);
+		(void)acpi_ps_next_parse_state(walk_state, *op, status);
 
 		status2 = acpi_ps_complete_this_op(walk_state, *op);
 		if (ACPI_FAILURE(status2)) {
 			return_ACPI_STATUS(status2);
 		}
 
-		status = AE_OK;
 		break;
 
 	case AE_CTRL_TERMINATE:
diff --git a/drivers/acpi/acpica/psopcode.c b/drivers/acpi/acpica/psopcode.c
index 43775c5..28af492 100644
--- a/drivers/acpi/acpica/psopcode.c
+++ b/drivers/acpi/acpica/psopcode.c
@@ -3,7 +3,7 @@
  *
  * Module Name: psopcode - Parser/Interpreter opcode information table
  *
- * Copyright (C) 2000 - 2019, Intel Corp.
+ * Copyright (C) 2000 - 2020, Intel Corp.
  *
  *****************************************************************************/
 
diff --git a/drivers/acpi/acpica/psopinfo.c b/drivers/acpi/acpica/psopinfo.c
index 15e7563..ab9327f 100644
--- a/drivers/acpi/acpica/psopinfo.c
+++ b/drivers/acpi/acpica/psopinfo.c
@@ -3,7 +3,7 @@
  *
  * Module Name: psopinfo - AML opcode information functions and dispatch tables
  *
- * Copyright (C) 2000 - 2019, Intel Corp.
+ * Copyright (C) 2000 - 2020, Intel Corp.
  *
  *****************************************************************************/
 
diff --git a/drivers/acpi/acpica/psparse.c b/drivers/acpi/acpica/psparse.c
index 9b38653..bd3caf7 100644
--- a/drivers/acpi/acpica/psparse.c
+++ b/drivers/acpi/acpica/psparse.c
@@ -3,7 +3,7 @@
  *
  * Module Name: psparse - Parser top level AML parse routines
  *
- * Copyright (C) 2000 - 2019, Intel Corp.
+ * Copyright (C) 2000 - 2020, Intel Corp.
  *
  *****************************************************************************/
 
@@ -508,8 +508,8 @@
 			}
 
 			/*
-			 * If the transfer to the new method method call worked
-			 *, a new walk state was created -- get it
+			 * If the transfer to the new method method call worked,
+			 * a new walk state was created -- get it
 			 */
 			walk_state = acpi_ds_get_current_walk_state(thread);
 			continue;
diff --git a/drivers/acpi/acpica/psscope.c b/drivers/acpi/acpica/psscope.c
index f153ca8..fceb311 100644
--- a/drivers/acpi/acpica/psscope.c
+++ b/drivers/acpi/acpica/psscope.c
@@ -3,7 +3,7 @@
  *
  * Module Name: psscope - Parser scope stack management routines
  *
- * Copyright (C) 2000 - 2019, Intel Corp.
+ * Copyright (C) 2000 - 2020, Intel Corp.
  *
  *****************************************************************************/
 
diff --git a/drivers/acpi/acpica/pstree.c b/drivers/acpi/acpica/pstree.c
index 22d8a2b..c8aef06 100644
--- a/drivers/acpi/acpica/pstree.c
+++ b/drivers/acpi/acpica/pstree.c
@@ -3,7 +3,7 @@
  *
  * Module Name: pstree - Parser op tree manipulation/traversal/search
  *
- * Copyright (C) 2000 - 2019, Intel Corp.
+ * Copyright (C) 2000 - 2020, Intel Corp.
  *
  *****************************************************************************/
 
diff --git a/drivers/acpi/acpica/psutils.c b/drivers/acpi/acpica/psutils.c
index 2512f58..00efae2 100644
--- a/drivers/acpi/acpica/psutils.c
+++ b/drivers/acpi/acpica/psutils.c
@@ -3,7 +3,7 @@
  *
  * Module Name: psutils - Parser miscellaneous utilities (Parser only)
  *
- * Copyright (C) 2000 - 2019, Intel Corp.
+ * Copyright (C) 2000 - 2020, Intel Corp.
  *
  *****************************************************************************/
 
diff --git a/drivers/acpi/acpica/pswalk.c b/drivers/acpi/acpica/pswalk.c
index cf91841..0fe3adf 100644
--- a/drivers/acpi/acpica/pswalk.c
+++ b/drivers/acpi/acpica/pswalk.c
@@ -3,7 +3,7 @@
  *
  * Module Name: pswalk - Parser routines to walk parsed op tree(s)
  *
- * Copyright (C) 2000 - 2019, Intel Corp.
+ * Copyright (C) 2000 - 2020, Intel Corp.
  *
  *****************************************************************************/
 
diff --git a/drivers/acpi/acpica/psxface.c b/drivers/acpi/acpica/psxface.c
index ee2ee2c..1bbfc8d 100644
--- a/drivers/acpi/acpica/psxface.c
+++ b/drivers/acpi/acpica/psxface.c
@@ -3,7 +3,7 @@
  *
  * Module Name: psxface - Parser external interfaces
  *
- * Copyright (C) 2000 - 2019, Intel Corp.
+ * Copyright (C) 2000 - 2020, Intel Corp.
  *
  *****************************************************************************/
 
diff --git a/drivers/acpi/acpica/rscreate.c b/drivers/acpi/acpica/rscreate.c
index 570ea0d..c659b54 100644
--- a/drivers/acpi/acpica/rscreate.c
+++ b/drivers/acpi/acpica/rscreate.c
@@ -312,6 +312,9 @@
 				path_buffer.pointer = user_prt->source;
 
 				status = acpi_ns_handle_to_pathname((acpi_handle)node, &path_buffer, FALSE);
+				if (ACPI_FAILURE(status)) {
+					return_ACPI_STATUS(status);
+				}
 
 				/* +1 to include null terminator */
 
diff --git a/drivers/acpi/acpica/tbdata.c b/drivers/acpi/acpica/tbdata.c
index 3094400..523b1e9 100644
--- a/drivers/acpi/acpica/tbdata.c
+++ b/drivers/acpi/acpica/tbdata.c
@@ -3,7 +3,7 @@
  *
  * Module Name: tbdata - Table manager data structure functions
  *
- * Copyright (C) 2000 - 2019, Intel Corp.
+ * Copyright (C) 2000 - 2020, Intel Corp.
  *
  *****************************************************************************/
 
@@ -933,6 +933,9 @@
 	}
 
 	status = acpi_ns_load_table(table_index, parent_node);
+	if (ACPI_FAILURE(status)) {
+		return_ACPI_STATUS(status);
+	}
 
 	/*
 	 * Update GPEs for any new _Lxx/_Exx methods. Ignore errors. The host is
diff --git a/drivers/acpi/acpica/tbfadt.c b/drivers/acpi/acpica/tbfadt.c
index 0041bfb..907edc5 100644
--- a/drivers/acpi/acpica/tbfadt.c
+++ b/drivers/acpi/acpica/tbfadt.c
@@ -3,7 +3,7 @@
  *
  * Module Name: tbfadt   - FADT table utilities
  *
- * Copyright (C) 2000 - 2019, Intel Corp.
+ * Copyright (C) 2000 - 2020, Intel Corp.
  *
  *****************************************************************************/
 
diff --git a/drivers/acpi/acpica/tbfind.c b/drivers/acpi/acpica/tbfind.c
index b2abb40..56d81e4 100644
--- a/drivers/acpi/acpica/tbfind.c
+++ b/drivers/acpi/acpica/tbfind.c
@@ -3,7 +3,7 @@
  *
  * Module Name: tbfind   - find table
  *
- * Copyright (C) 2000 - 2019, Intel Corp.
+ * Copyright (C) 2000 - 2020, Intel Corp.
  *
  *****************************************************************************/
 
diff --git a/drivers/acpi/acpica/tbinstal.c b/drivers/acpi/acpica/tbinstal.c
index ef1ffd3..0bb15ad 100644
--- a/drivers/acpi/acpica/tbinstal.c
+++ b/drivers/acpi/acpica/tbinstal.c
@@ -3,7 +3,7 @@
  *
  * Module Name: tbinstal - ACPI table installation and removal
  *
- * Copyright (C) 2000 - 2019, Intel Corp.
+ * Copyright (C) 2000 - 2020, Intel Corp.
  *
  *****************************************************************************/
 
diff --git a/drivers/acpi/acpica/tbprint.c b/drivers/acpi/acpica/tbprint.c
index 4764f84..0b3494a 100644
--- a/drivers/acpi/acpica/tbprint.c
+++ b/drivers/acpi/acpica/tbprint.c
@@ -3,7 +3,7 @@
  *
  * Module Name: tbprint - Table output utilities
  *
- * Copyright (C) 2000 - 2019, Intel Corp.
+ * Copyright (C) 2000 - 2020, Intel Corp.
  *
  *****************************************************************************/
 
diff --git a/drivers/acpi/acpica/tbutils.c b/drivers/acpi/acpica/tbutils.c
index c5f0b8e..dfe1ac3 100644
--- a/drivers/acpi/acpica/tbutils.c
+++ b/drivers/acpi/acpica/tbutils.c
@@ -3,7 +3,7 @@
  *
  * Module Name: tbutils - ACPI Table utilities
  *
- * Copyright (C) 2000 - 2019, Intel Corp.
+ * Copyright (C) 2000 - 2020, Intel Corp.
  *
  *****************************************************************************/
 
diff --git a/drivers/acpi/acpica/tbxface.c b/drivers/acpi/acpica/tbxface.c
index 1640685..7490429 100644
--- a/drivers/acpi/acpica/tbxface.c
+++ b/drivers/acpi/acpica/tbxface.c
@@ -3,7 +3,7 @@
  *
  * Module Name: tbxface - ACPI table-oriented external interfaces
  *
- * Copyright (C) 2000 - 2019, Intel Corp.
+ * Copyright (C) 2000 - 2020, Intel Corp.
  *
  *****************************************************************************/
 
@@ -202,14 +202,14 @@
  *
  * PARAMETERS:  signature           - ACPI signature of needed table
  *              instance            - Which instance (for SSDTs)
- *              out_table_header    - The pointer to the table header to fill
+ *              out_table_header    - The pointer to the where the table header
+ *                                    is returned
  *
- * RETURN:      Status and pointer to mapped table header
+ * RETURN:      Status and a copy of the table header
  *
- * DESCRIPTION: Finds an ACPI table header.
- *
- * NOTE:        Caller is responsible in unmapping the header with
- *              acpi_os_unmap_memory
+ * DESCRIPTION: Finds and returns an ACPI table header. Caller provides the
+ *              memory where a copy of the header is to be returned
+ *              (fixed length).
  *
  ******************************************************************************/
 acpi_status
diff --git a/drivers/acpi/acpica/tbxfload.c b/drivers/acpi/acpica/tbxfload.c
index 86f1693..bcba993 100644
--- a/drivers/acpi/acpica/tbxfload.c
+++ b/drivers/acpi/acpica/tbxfload.c
@@ -3,7 +3,7 @@
  *
  * Module Name: tbxfload - Table load/unload external interfaces
  *
- * Copyright (C) 2000 - 2019, Intel Corp.
+ * Copyright (C) 2000 - 2020, Intel Corp.
  *
  *****************************************************************************/
 
@@ -268,6 +268,8 @@
  *
  * PARAMETERS:  table               - Pointer to a buffer containing the ACPI
  *                                    table to be loaded.
+ *              table_idx           - Pointer to a u32 for storing the table
+ *                                    index, might be NULL
  *
  * RETURN:      Status
  *
@@ -278,7 +280,7 @@
  *              to ensure that the table is not deleted or unmapped.
  *
  ******************************************************************************/
-acpi_status acpi_load_table(struct acpi_table_header *table)
+acpi_status acpi_load_table(struct acpi_table_header *table, u32 *table_idx)
 {
 	acpi_status status;
 	u32 table_index;
@@ -297,6 +299,10 @@
 	status = acpi_tb_install_and_load_table(ACPI_PTR_TO_PHYSADDR(table),
 						ACPI_TABLE_ORIGIN_EXTERNAL_VIRTUAL,
 						FALSE, &table_index);
+	if (table_idx) {
+		*table_idx = table_index;
+	}
+
 	if (ACPI_SUCCESS(status)) {
 
 		/* Complete the initialization/resolution of new objects */
@@ -390,3 +396,35 @@
 }
 
 ACPI_EXPORT_SYMBOL(acpi_unload_parent_table)
+/*******************************************************************************
+ *
+ * FUNCTION:    acpi_unload_table
+ *
+ * PARAMETERS:  table_index         - Index as returned by acpi_load_table
+ *
+ * RETURN:      Status
+ *
+ * DESCRIPTION: Via the table_index representing an SSDT or OEMx table, unloads
+ *              the table and deletes all namespace objects associated with
+ *              that table. Unloading of the DSDT is not allowed.
+ *              Note: Mainly intended to support hotplug removal of SSDTs.
+ *
+ ******************************************************************************/
+acpi_status acpi_unload_table(u32 table_index)
+{
+	acpi_status status;
+
+	ACPI_FUNCTION_TRACE(acpi_unload_table);
+
+	if (table_index == 1) {
+
+		/* table_index==1 means DSDT is the owner. DSDT cannot be unloaded */
+
+		return_ACPI_STATUS(AE_TYPE);
+	}
+
+	status = acpi_tb_unload_table(table_index);
+	return_ACPI_STATUS(status);
+}
+
+ACPI_EXPORT_SYMBOL(acpi_unload_table)
diff --git a/drivers/acpi/acpica/tbxfroot.c b/drivers/acpi/acpica/tbxfroot.c
index e2859d0..0edc6ef 100644
--- a/drivers/acpi/acpica/tbxfroot.c
+++ b/drivers/acpi/acpica/tbxfroot.c
@@ -3,7 +3,7 @@
  *
  * Module Name: tbxfroot - Find the root ACPI table (RSDT)
  *
- * Copyright (C) 2000 - 2019, Intel Corp.
+ * Copyright (C) 2000 - 2020, Intel Corp.
  *
  *****************************************************************************/
 
diff --git a/drivers/acpi/acpica/utaddress.c b/drivers/acpi/acpica/utaddress.c
index bb26037..99fa487 100644
--- a/drivers/acpi/acpica/utaddress.c
+++ b/drivers/acpi/acpica/utaddress.c
@@ -3,7 +3,7 @@
  *
  * Module Name: utaddress - op_region address range check
  *
- * Copyright (C) 2000 - 2019, Intel Corp.
+ * Copyright (C) 2000 - 2020, Intel Corp.
  *
  *****************************************************************************/
 
diff --git a/drivers/acpi/acpica/utalloc.c b/drivers/acpi/acpica/utalloc.c
index d64da4d..303ab51 100644
--- a/drivers/acpi/acpica/utalloc.c
+++ b/drivers/acpi/acpica/utalloc.c
@@ -3,7 +3,7 @@
  *
  * Module Name: utalloc - local memory allocation routines
  *
- * Copyright (C) 2000 - 2019, Intel Corp.
+ * Copyright (C) 2000 - 2020, Intel Corp.
  *
  *****************************************************************************/
 
diff --git a/drivers/acpi/acpica/utascii.c b/drivers/acpi/acpica/utascii.c
index f6cd7d4..d78656d 100644
--- a/drivers/acpi/acpica/utascii.c
+++ b/drivers/acpi/acpica/utascii.c
@@ -3,7 +3,7 @@
  *
  * Module Name: utascii - Utility ascii functions
  *
- * Copyright (C) 2000 - 2019, Intel Corp.
+ * Copyright (C) 2000 - 2020, Intel Corp.
  *
  *****************************************************************************/
 
diff --git a/drivers/acpi/acpica/utbuffer.c b/drivers/acpi/acpica/utbuffer.c
index 61db996..f2ec427 100644
--- a/drivers/acpi/acpica/utbuffer.c
+++ b/drivers/acpi/acpica/utbuffer.c
@@ -3,7 +3,7 @@
  *
  * Module Name: utbuffer - Buffer dump routines
  *
- * Copyright (C) 2000 - 2019, Intel Corp.
+ * Copyright (C) 2000 - 2020, Intel Corp.
  *
  *****************************************************************************/
 
@@ -37,7 +37,9 @@
 	u32 j;
 	u32 temp32;
 	u8 buf_char;
+	u32 display_data_only = display & DB_DISPLAY_DATA_ONLY;
 
+	display &= ~DB_DISPLAY_DATA_ONLY;
 	if (!buffer) {
 		acpi_os_printf("Null Buffer Pointer in DumpBuffer!\n");
 		return;
@@ -53,7 +55,9 @@
 
 		/* Print current offset */
 
-		acpi_os_printf("%8.4X: ", (base_offset + i));
+		if (!display_data_only) {
+			acpi_os_printf("%8.4X: ", (base_offset + i));
+		}
 
 		/* Print 16 hex chars */
 
@@ -109,32 +113,34 @@
 		 * Print the ASCII equivalent characters but watch out for the bad
 		 * unprintable ones (printable chars are 0x20 through 0x7E)
 		 */
-		acpi_os_printf(" ");
-		for (j = 0; j < 16; j++) {
-			if (i + j >= count) {
-				acpi_os_printf("\n");
-				return;
+		if (!display_data_only) {
+			acpi_os_printf(" ");
+			for (j = 0; j < 16; j++) {
+				if (i + j >= count) {
+					acpi_os_printf("\n");
+					return;
+				}
+
+				/*
+				 * Add comment characters so rest of line is ignored when
+				 * compiled
+				 */
+				if (j == 0) {
+					acpi_os_printf("// ");
+				}
+
+				buf_char = buffer[(acpi_size)i + j];
+				if (isprint(buf_char)) {
+					acpi_os_printf("%c", buf_char);
+				} else {
+					acpi_os_printf(".");
+				}
 			}
 
-			/*
-			 * Add comment characters so rest of line is ignored when
-			 * compiled
-			 */
-			if (j == 0) {
-				acpi_os_printf("// ");
-			}
+			/* Done with that line. */
 
-			buf_char = buffer[(acpi_size)i + j];
-			if (isprint(buf_char)) {
-				acpi_os_printf("%c", buf_char);
-			} else {
-				acpi_os_printf(".");
-			}
+			acpi_os_printf("\n");
 		}
-
-		/* Done with that line. */
-
-		acpi_os_printf("\n");
 		i += 16;
 	}
 
diff --git a/drivers/acpi/acpica/utcache.c b/drivers/acpi/acpica/utcache.c
index 8533fce..1b03a27 100644
--- a/drivers/acpi/acpica/utcache.c
+++ b/drivers/acpi/acpica/utcache.c
@@ -3,7 +3,7 @@
  *
  * Module Name: utcache - local cache allocation routines
  *
- * Copyright (C) 2000 - 2019, Intel Corp.
+ * Copyright (C) 2000 - 2020, Intel Corp.
  *
  *****************************************************************************/
 
diff --git a/drivers/acpi/acpica/utcopy.c b/drivers/acpi/acpica/utcopy.c
index 1fb8327..41bdd02 100644
--- a/drivers/acpi/acpica/utcopy.c
+++ b/drivers/acpi/acpica/utcopy.c
@@ -3,7 +3,7 @@
  *
  * Module Name: utcopy - Internal to external object translation utilities
  *
- * Copyright (C) 2000 - 2019, Intel Corp.
+ * Copyright (C) 2000 - 2020, Intel Corp.
  *
  *****************************************************************************/
 
diff --git a/drivers/acpi/acpica/utdebug.c b/drivers/acpi/acpica/utdebug.c
index 5b169b5..0c8cb06 100644
--- a/drivers/acpi/acpica/utdebug.c
+++ b/drivers/acpi/acpica/utdebug.c
@@ -3,7 +3,7 @@
  *
  * Module Name: utdebug - Debug print/trace routines
  *
- * Copyright (C) 2000 - 2019, Intel Corp.
+ * Copyright (C) 2000 - 2020, Intel Corp.
  *
  *****************************************************************************/
 
diff --git a/drivers/acpi/acpica/utdecode.c b/drivers/acpi/acpica/utdecode.c
index 65beaa2..ed9aedf 100644
--- a/drivers/acpi/acpica/utdecode.c
+++ b/drivers/acpi/acpica/utdecode.c
@@ -3,7 +3,7 @@
  *
  * Module Name: utdecode - Utility decoding routines (value-to-string)
  *
- * Copyright (C) 2000 - 2019, Intel Corp.
+ * Copyright (C) 2000 - 2020, Intel Corp.
  *
  *****************************************************************************/
 
@@ -78,7 +78,8 @@
 	"IPMI",			/* 0x07 */
 	"GeneralPurposeIo",	/* 0x08 */
 	"GenericSerialBus",	/* 0x09 */
-	"PlatformCommChannel"	/* 0x0A */
+	"PCC",			/* 0x0A */
+	"PlatformRtMechanism"	/* 0x0B */
 };
 
 const char *acpi_ut_get_region_name(u8 space_id)
diff --git a/drivers/acpi/acpica/utdelete.c b/drivers/acpi/acpica/utdelete.c
index 72d2c0b..cb1750e 100644
--- a/drivers/acpi/acpica/utdelete.c
+++ b/drivers/acpi/acpica/utdelete.c
@@ -422,6 +422,7 @@
 			ACPI_WARNING((AE_INFO,
 				      "Obj %p, Reference Count is already zero, cannot decrement\n",
 				      object));
+			return;
 		}
 
 		ACPI_DEBUG_PRINT_RAW((ACPI_DB_ALLOCATIONS,
diff --git a/drivers/acpi/acpica/uteval.c b/drivers/acpi/acpica/uteval.c
index 558a9f3..8180d1a 100644
--- a/drivers/acpi/acpica/uteval.c
+++ b/drivers/acpi/acpica/uteval.c
@@ -3,7 +3,7 @@
  *
  * Module Name: uteval - Object evaluation
  *
- * Copyright (C) 2000 - 2019, Intel Corp.
+ * Copyright (C) 2000 - 2020, Intel Corp.
  *
  *****************************************************************************/
 
diff --git a/drivers/acpi/acpica/utglobal.c b/drivers/acpi/acpica/utglobal.c
index b0622ec..e6dcbdc 100644
--- a/drivers/acpi/acpica/utglobal.c
+++ b/drivers/acpi/acpica/utglobal.c
@@ -3,7 +3,7 @@
  *
  * Module Name: utglobal - Global variables for the ACPI subsystem
  *
- * Copyright (C) 2000 - 2019, Intel Corp.
+ * Copyright (C) 2000 - 2020, Intel Corp.
  *
  *****************************************************************************/
 
diff --git a/drivers/acpi/acpica/uthex.c b/drivers/acpi/acpica/uthex.c
index b6da135..0e02f12 100644
--- a/drivers/acpi/acpica/uthex.c
+++ b/drivers/acpi/acpica/uthex.c
@@ -3,7 +3,7 @@
  *
  * Module Name: uthex -- Hex/ASCII support functions
  *
- * Copyright (C) 2000 - 2019, Intel Corp.
+ * Copyright (C) 2000 - 2020, Intel Corp.
  *
  *****************************************************************************/
 
diff --git a/drivers/acpi/acpica/utids.c b/drivers/acpi/acpica/utids.c
index e805abd..3e68864 100644
--- a/drivers/acpi/acpica/utids.c
+++ b/drivers/acpi/acpica/utids.c
@@ -3,7 +3,7 @@
  *
  * Module Name: utids - support for device Ids - HID, UID, CID, SUB, CLS
  *
- * Copyright (C) 2000 - 2019, Intel Corp.
+ * Copyright (C) 2000 - 2020, Intel Corp.
  *
  *****************************************************************************/
 
@@ -263,8 +263,7 @@
 	 * 3) Size of the actual CID strings
 	 */
 	cid_list_size = sizeof(struct acpi_pnp_device_id_list) +
-	    ((count - 1) * sizeof(struct acpi_pnp_device_id)) +
-	    string_area_size;
+	    (count * sizeof(struct acpi_pnp_device_id)) + string_area_size;
 
 	cid_list = ACPI_ALLOCATE_ZEROED(cid_list_size);
 	if (!cid_list) {
@@ -289,9 +288,7 @@
 						  value);
 			length = ACPI_EISAID_STRING_SIZE;
 		} else {	/* ACPI_TYPE_STRING */
-
 			/* Copy the String CID from the returned object */
-
 			strcpy(next_id_string, cid_objects[i]->string.pointer);
 			length = cid_objects[i]->string.length + 1;
 		}
diff --git a/drivers/acpi/acpica/utinit.c b/drivers/acpi/acpica/utinit.c
index 6f33e7c..fdbc397 100644
--- a/drivers/acpi/acpica/utinit.c
+++ b/drivers/acpi/acpica/utinit.c
@@ -3,7 +3,7 @@
  *
  * Module Name: utinit - Common ACPI subsystem initialization
  *
- * Copyright (C) 2000 - 2019, Intel Corp.
+ * Copyright (C) 2000 - 2020, Intel Corp.
  *
  *****************************************************************************/
 
diff --git a/drivers/acpi/acpica/utlock.c b/drivers/acpi/acpica/utlock.c
index 8b4ff11..46be549 100644
--- a/drivers/acpi/acpica/utlock.c
+++ b/drivers/acpi/acpica/utlock.c
@@ -3,7 +3,7 @@
  *
  * Module Name: utlock - Reader/Writer lock interfaces
  *
- * Copyright (C) 2000 - 2019, Intel Corp.
+ * Copyright (C) 2000 - 2020, Intel Corp.
  *
  *****************************************************************************/
 
diff --git a/drivers/acpi/acpica/utobject.c b/drivers/acpi/acpica/utobject.c
index eee97a9..bbec04c 100644
--- a/drivers/acpi/acpica/utobject.c
+++ b/drivers/acpi/acpica/utobject.c
@@ -3,7 +3,7 @@
  *
  * Module Name: utobject - ACPI object create/delete/size/cache routines
  *
- * Copyright (C) 2000 - 2019, Intel Corp.
+ * Copyright (C) 2000 - 2020, Intel Corp.
  *
  *****************************************************************************/
 
@@ -44,7 +44,7 @@
  *
  * NOTE:        We always allocate the worst-case object descriptor because
  *              these objects are cached, and we want them to be
- *              one-size-satisifies-any-request. This in itself may not be
+ *              one-size-satisfies-any-request. This in itself may not be
  *              the most memory efficient, but the efficiency of the object
  *              cache should more than make up for this!
  *
diff --git a/drivers/acpi/acpica/utosi.c b/drivers/acpi/acpica/utosi.c
index ad2b218..0a01c08 100644
--- a/drivers/acpi/acpica/utosi.c
+++ b/drivers/acpi/acpica/utosi.c
@@ -3,7 +3,7 @@
  *
  * Module Name: utosi - Support for the _OSI predefined control method
  *
- * Copyright (C) 2000 - 2019, Intel Corp.
+ * Copyright (C) 2000 - 2020, Intel Corp.
  *
  *****************************************************************************/
 
diff --git a/drivers/acpi/acpica/utpredef.c b/drivers/acpi/acpica/utpredef.c
index 1b0f68f..dd277f7 100644
--- a/drivers/acpi/acpica/utpredef.c
+++ b/drivers/acpi/acpica/utpredef.c
@@ -3,7 +3,7 @@
  *
  * Module Name: utpredef - support functions for predefined names
  *
- * Copyright (C) 2000 - 2019, Intel Corp.
+ * Copyright (C) 2000 - 2020, Intel Corp.
  *
  *****************************************************************************/
 
@@ -151,7 +151,7 @@
 
 static const char *ut_external_type_names[] =	/* Indexed by ACPI_TYPE_* */
 {
-	", UNSUPPORTED-TYPE",
+	", Type_ANY",
 	", Integer",
 	", String",
 	", Buffer",
@@ -311,8 +311,7 @@
 	for (i = 0; i < arg_count; i++) {
 		this_argument_type = METHOD_GET_NEXT_TYPE(argument_types);
 
-		if (!this_argument_type
-		    || (this_argument_type > METHOD_MAX_ARG_TYPE)) {
+		if (this_argument_type > METHOD_MAX_ARG_TYPE) {
 			printf("**** Invalid argument type (%u) "
 			       "in predefined info structure\n",
 			       this_argument_type);
diff --git a/drivers/acpi/acpica/utprint.c b/drivers/acpi/acpica/utprint.c
index 5839f2f..681c11f 100644
--- a/drivers/acpi/acpica/utprint.c
+++ b/drivers/acpi/acpica/utprint.c
@@ -3,7 +3,7 @@
  *
  * Module Name: utprint - Formatted printing routines
  *
- * Copyright (C) 2000 - 2019, Intel Corp.
+ * Copyright (C) 2000 - 2020, Intel Corp.
  *
  *****************************************************************************/
 
@@ -332,7 +332,12 @@
 	int i;
 
 	pos = string;
-	end = string + size;
+
+	if (size != ACPI_UINT32_MAX) {
+		end = string + size;
+	} else {
+		end = ACPI_CAST_PTR(char, ACPI_UINT32_MAX);
+	}
 
 	for (; *format; ++format) {
 		if (*format != '%') {
diff --git a/drivers/acpi/acpica/utstrsuppt.c b/drivers/acpi/acpica/utstrsuppt.c
index 05ff200..2d91003 100644
--- a/drivers/acpi/acpica/utstrsuppt.c
+++ b/drivers/acpi/acpica/utstrsuppt.c
@@ -45,10 +45,15 @@
 	/* Convert each ASCII byte in the input string */
 
 	while (*string) {
-
-		/* Character must be ASCII 0-7, otherwise terminate with no error */
-
+		/*
+		 * Character must be ASCII 0-7, otherwise:
+		 * 1) Runtime: terminate with no error, per the ACPI spec
+		 * 2) Compiler: return an error
+		 */
 		if (!(ACPI_IS_OCTAL_DIGIT(*string))) {
+#ifdef ACPI_ASL_COMPILER
+			status = AE_BAD_OCTAL_CONSTANT;
+#endif
 			break;
 		}
 
@@ -94,10 +99,15 @@
 	/* Convert each ASCII byte in the input string */
 
 	while (*string) {
-
-		/* Character must be ASCII 0-9, otherwise terminate with no error */
-
+		/*
+		 * Character must be ASCII 0-9, otherwise:
+		 * 1) Runtime: terminate with no error, per the ACPI spec
+		 * 2) Compiler: return an error
+		 */
 		if (!isdigit(*string)) {
+#ifdef ACPI_ASL_COMPILER
+			status = AE_BAD_DECIMAL_CONSTANT;
+#endif
 			break;
 		}
 
@@ -143,10 +153,15 @@
 	/* Convert each ASCII byte in the input string */
 
 	while (*string) {
-
-		/* Must be ASCII A-F, a-f, or 0-9, otherwise terminate with no error */
-
+		/*
+		 * Character must be ASCII A-F, a-f, or 0-9, otherwise:
+		 * 1) Runtime: terminate with no error, per the ACPI spec
+		 * 2) Compiler: return an error
+		 */
 		if (!isxdigit(*string)) {
+#ifdef ACPI_ASL_COMPILER
+			status = AE_BAD_HEX_CONSTANT;
+#endif
 			break;
 		}
 
diff --git a/drivers/acpi/acpica/uttrack.c b/drivers/acpi/acpica/uttrack.c
index 8052f7e..d366be4 100644
--- a/drivers/acpi/acpica/uttrack.c
+++ b/drivers/acpi/acpica/uttrack.c
@@ -3,7 +3,7 @@
  *
  * Module Name: uttrack - Memory allocation tracking routines (debug only)
  *
- * Copyright (C) 2000 - 2019, Intel Corp.
+ * Copyright (C) 2000 - 2020, Intel Corp.
  *
  *****************************************************************************/
 
@@ -660,7 +660,7 @@
 					case ACPI_DESC_TYPE_PARSER:
 
 						acpi_os_printf
-						    ("AmlOpcode 0x%04hX\n",
+						    ("AmlOpcode 0x%04X\n",
 						     descriptor->op.asl.
 						     aml_opcode);
 						break;
diff --git a/drivers/acpi/acpica/utuuid.c b/drivers/acpi/acpica/utuuid.c
index 0a7cf80..b803995 100644
--- a/drivers/acpi/acpica/utuuid.c
+++ b/drivers/acpi/acpica/utuuid.c
@@ -3,7 +3,7 @@
  *
  * Module Name: utuuid -- UUID support functions
  *
- * Copyright (C) 2000 - 2019, Intel Corp.
+ * Copyright (C) 2000 - 2020, Intel Corp.
  *
  *****************************************************************************/
 
diff --git a/drivers/acpi/acpica/utxface.c b/drivers/acpi/acpica/utxface.c
index f497c4b..ca7c9f0 100644
--- a/drivers/acpi/acpica/utxface.c
+++ b/drivers/acpi/acpica/utxface.c
@@ -3,7 +3,7 @@
  *
  * Module Name: utxface - External interfaces, miscellaneous utility functions
  *
- * Copyright (C) 2000 - 2019, Intel Corp.
+ * Copyright (C) 2000 - 2020, Intel Corp.
  *
  *****************************************************************************/
 
diff --git a/drivers/acpi/acpica/utxfinit.c b/drivers/acpi/acpica/utxfinit.c
index cf769e9..653e3bb 100644
--- a/drivers/acpi/acpica/utxfinit.c
+++ b/drivers/acpi/acpica/utxfinit.c
@@ -3,7 +3,7 @@
  *
  * Module Name: utxfinit - External interfaces for ACPICA initialization
  *
- * Copyright (C) 2000 - 2019, Intel Corp.
+ * Copyright (C) 2000 - 2020, Intel Corp.
  *
  *****************************************************************************/