Update Linux to v5.4.2

Change-Id: Idf6911045d9d382da2cfe01b1edff026404ac8fd
diff --git a/drivers/acpi/x86/apple.c b/drivers/acpi/x86/apple.c
index 51b4cf9..c285c91 100644
--- a/drivers/acpi/x86/apple.c
+++ b/drivers/acpi/x86/apple.c
@@ -1,10 +1,7 @@
+// SPDX-License-Identifier: GPL-2.0-only
 /*
  * apple.c - Apple ACPI quirks
  * Copyright (C) 2017 Lukas Wunner <lukas@wunner.de>
- *
- * This program is free software; you can redistribute it and/or modify
- * it under the terms of the GNU General Public License (version 2) as
- * published by the Free Software Foundation.
  */
 
 #include <linux/acpi.h>
@@ -62,7 +59,7 @@
 	if (!numprops)
 		goto out_free;
 
-	valid = kcalloc(BITS_TO_LONGS(numprops), sizeof(long), GFP_KERNEL);
+	valid = bitmap_zalloc(numprops, GFP_KERNEL);
 	if (!valid)
 		goto out_free;
 
@@ -132,10 +129,10 @@
 	}
 	WARN_ON(free_space != (void *)newprops + newsize);
 
-	adev->data.properties = newprops;
 	adev->data.pointer = newprops;
+	acpi_data_add_props(&adev->data, &apple_prp_guid, newprops);
 
 out_free:
 	ACPI_FREE(props);
-	kfree(valid);
+	bitmap_free(valid);
 }
diff --git a/drivers/acpi/x86/utils.c b/drivers/acpi/x86/utils.c
index 06c31ec..697a6b1 100644
--- a/drivers/acpi/x86/utils.c
+++ b/drivers/acpi/x86/utils.c
@@ -1,3 +1,4 @@
+// SPDX-License-Identifier: GPL-2.0-only
 /*
  * X86 ACPI Utility Functions
  *
@@ -5,10 +6,6 @@
  *
  * Based on various non upstream patches to support the CHT Whiskey Cove PMIC:
  * Copyright (C) 2013-2015 Intel Corporation. All rights reserved.
- *
- * This program is free software; you can redistribute it and/or modify
- * it under the terms of the GNU General Public License version 2 as
- * published by the Free Software Foundation.
  */
 
 #include <linux/acpi.h>
@@ -54,8 +51,13 @@
 	 * Bay / Cherry Trail PWM directly poked by GPU driver in win10,
 	 * but Linux uses a separate PWM driver, harmless if not used.
 	 */
-	ENTRY("80860F09", "1", ICPU(INTEL_FAM6_ATOM_SILVERMONT1), {}),
+	ENTRY("80860F09", "1", ICPU(INTEL_FAM6_ATOM_SILVERMONT), {}),
 	ENTRY("80862288", "1", ICPU(INTEL_FAM6_ATOM_AIRMONT), {}),
+
+	/* Lenovo Yoga Book uses PWM2 for keyboard backlight control */
+	ENTRY("80862289", "2", ICPU(INTEL_FAM6_ATOM_AIRMONT), {
+			DMI_MATCH(DMI_PRODUCT_NAME, "Lenovo YB1-X9"),
+		}),
 	/*
 	 * The INT0002 device is necessary to clear wakeup interrupt sources
 	 * on Cherry Trail devices, without it we get nobody cared IRQ msgs.
@@ -67,11 +69,11 @@
 	 * after _SB.PCI0.GFX0.LCD.LCD1._ON gets called has passed
 	 * *and* _STA has been called at least 3 times since.
 	 */
-	ENTRY("SYNA7500", "1", ICPU(INTEL_FAM6_HASWELL_ULT), {
+	ENTRY("SYNA7500", "1", ICPU(INTEL_FAM6_HASWELL_L), {
 		DMI_MATCH(DMI_SYS_VENDOR, "Dell Inc."),
 		DMI_MATCH(DMI_PRODUCT_NAME, "Venue 11 Pro 7130"),
 	      }),
-	ENTRY("SYNA7500", "1", ICPU(INTEL_FAM6_HASWELL_ULT), {
+	ENTRY("SYNA7500", "1", ICPU(INTEL_FAM6_HASWELL_L), {
 		DMI_MATCH(DMI_SYS_VENDOR, "Dell Inc."),
 		DMI_MATCH(DMI_PRODUCT_NAME, "Venue 11 Pro 7139"),
 	      }),