Update Linux to v5.4.2

Change-Id: Idf6911045d9d382da2cfe01b1edff026404ac8fd
diff --git a/include/linux/can/can-ml.h b/include/linux/can/can-ml.h
new file mode 100644
index 0000000..2f5d731
--- /dev/null
+++ b/include/linux/can/can-ml.h
@@ -0,0 +1,68 @@
+/* SPDX-License-Identifier: (GPL-2.0 OR BSD-3-Clause) */
+/* Copyright (c) 2002-2007 Volkswagen Group Electronic Research
+ * Copyright (c) 2017 Pengutronix, Marc Kleine-Budde <kernel@pengutronix.de>
+ *
+ * All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the above copyright
+ *    notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in the
+ *    documentation and/or other materials provided with the distribution.
+ * 3. Neither the name of Volkswagen nor the names of its contributors
+ *    may be used to endorse or promote products derived from this software
+ *    without specific prior written permission.
+ *
+ * Alternatively, provided that this notice is retained in full, this
+ * software may be distributed under the terms of the GNU General
+ * Public License ("GPL") version 2, in which case the provisions of the
+ * GPL apply INSTEAD OF those given above.
+ *
+ * The provided data structures and external interfaces from this code
+ * are not restricted to be used by modules with a GPL compatible license.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+ * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+ * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
+ * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
+ * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
+ * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
+ * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
+ * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
+ * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+ * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
+ * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH
+ * DAMAGE.
+ *
+ */
+
+#ifndef CAN_ML_H
+#define CAN_ML_H
+
+#include <linux/can.h>
+#include <linux/list.h>
+
+#define CAN_SFF_RCV_ARRAY_SZ (1 << CAN_SFF_ID_BITS)
+#define CAN_EFF_RCV_HASH_BITS 10
+#define CAN_EFF_RCV_ARRAY_SZ (1 << CAN_EFF_RCV_HASH_BITS)
+
+enum { RX_ERR, RX_ALL, RX_FIL, RX_INV, RX_MAX };
+
+struct can_dev_rcv_lists {
+	struct hlist_head rx[RX_MAX];
+	struct hlist_head rx_sff[CAN_SFF_RCV_ARRAY_SZ];
+	struct hlist_head rx_eff[CAN_EFF_RCV_ARRAY_SZ];
+	int entries;
+};
+
+struct can_ml_priv {
+	struct can_dev_rcv_lists dev_rcv_lists;
+#ifdef CAN_J1939
+	struct j1939_priv *j1939_priv;
+#endif
+};
+
+#endif /* CAN_ML_H */
diff --git a/include/linux/can/core.h b/include/linux/can/core.h
index 6099bc1..e20a0cd 100644
--- a/include/linux/can/core.h
+++ b/include/linux/can/core.h
@@ -1,4 +1,4 @@
-/* SPDX-License-Identifier: GPL-2.0 */
+/* SPDX-License-Identifier: (GPL-2.0 OR BSD-3-Clause) */
 /*
  * linux/can/core.h
  *
@@ -41,6 +41,14 @@
 	struct proto *prot;
 };
 
+/* required_size
+ * macro to find the minimum size of a struct
+ * that includes a requested member
+ */
+#define CAN_REQUIRED_SIZE(struct_type, member) \
+	(offsetof(typeof(struct_type), member) + \
+	 sizeof(((typeof(struct_type) *)(NULL))->member))
+
 /* function prototypes for the CAN networklayer core (af_can.c) */
 
 extern int  can_proto_register(const struct can_proto *cp);
@@ -57,6 +65,6 @@
 			      void *data);
 
 extern int can_send(struct sk_buff *skb, int loop);
-extern int can_ioctl(struct socket *sock, unsigned int cmd, unsigned long arg);
+void can_sock_destruct(struct sock *sk);
 
 #endif /* !_CAN_CORE_H */
diff --git a/include/linux/can/dev.h b/include/linux/can/dev.h
index f01623a..9b3c720 100644
--- a/include/linux/can/dev.h
+++ b/include/linux/can/dev.h
@@ -169,7 +169,8 @@
 
 void can_put_echo_skb(struct sk_buff *skb, struct net_device *dev,
 		      unsigned int idx);
-struct sk_buff *__can_get_echo_skb(struct net_device *dev, unsigned int idx, u8 *len_ptr);
+struct sk_buff *__can_get_echo_skb(struct net_device *dev, unsigned int idx,
+				   u8 *len_ptr);
 unsigned int can_get_echo_skb(struct net_device *dev, unsigned int idx);
 void can_free_echo_skb(struct net_device *dev, unsigned int idx);
 
diff --git a/include/linux/can/dev/peak_canfd.h b/include/linux/can/dev/peak_canfd.h
index 46dceef..511a373 100644
--- a/include/linux/can/dev/peak_canfd.h
+++ b/include/linux/can/dev/peak_canfd.h
@@ -1,17 +1,9 @@
+/* SPDX-License-Identifier: GPL-2.0-only */
 /*
  * CAN driver for PEAK System micro-CAN based adapters
  *
  * Copyright (C) 2003-2011 PEAK System-Technik GmbH
  * Copyright (C) 2011-2013 Stephane Grosjean <s.grosjean@peak-system.com>
- *
- * This program is free software; you can redistribute it and/or modify it
- * under the terms of the GNU General Public License as published
- * by the Free Software Foundation; version 2 of the License.
- *
- * This program is distributed in the hope that it will be useful, but
- * WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
- * General Public License for more details.
  */
 #ifndef PUCAN_H
 #define PUCAN_H
diff --git a/include/linux/can/led.h b/include/linux/can/led.h
index 2746f7c..7c3cfd7 100644
--- a/include/linux/can/led.h
+++ b/include/linux/can/led.h
@@ -1,9 +1,6 @@
+/* SPDX-License-Identifier: GPL-2.0-only */
 /*
  * Copyright 2012, Fabio Baltieri <fabio.baltieri@gmail.com>
- *
- * 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.
  */
 
 #ifndef _CAN_LED_H
diff --git a/include/linux/can/platform/rcar_can.h b/include/linux/can/platform/rcar_can.h
deleted file mode 100644
index a43dcd0..0000000
--- a/include/linux/can/platform/rcar_can.h
+++ /dev/null
@@ -1,18 +0,0 @@
-/* SPDX-License-Identifier: GPL-2.0 */
-#ifndef _CAN_PLATFORM_RCAR_CAN_H_
-#define _CAN_PLATFORM_RCAR_CAN_H_
-
-#include <linux/types.h>
-
-/* Clock Select Register settings */
-enum CLKR {
-	CLKR_CLKP1 = 0,	/* Peripheral clock (clkp1) */
-	CLKR_CLKP2 = 1,	/* Peripheral clock (clkp2) */
-	CLKR_CLKEXT = 3	/* Externally input clock */
-};
-
-struct rcar_can_platform_data {
-	enum CLKR clock_select;	/* Clock source select */
-};
-
-#endif	/* !_CAN_PLATFORM_RCAR_CAN_H_ */
diff --git a/include/linux/can/rx-offload.h b/include/linux/can/rx-offload.h
index 8268811..01219f2 100644
--- a/include/linux/can/rx-offload.h
+++ b/include/linux/can/rx-offload.h
@@ -1,17 +1,9 @@
+/* SPDX-License-Identifier: GPL-2.0-only */
 /*
  * linux/can/rx-offload.h
  *
  * Copyright (c) 2014 David Jander, Protonic Holland
  * Copyright (c) 2014-2017 Pengutronix, Marc Kleine-Budde <kernel@pengutronix.de>
- *
- * This program is free software; you can redistribute it and/or modify
- * it under the terms of the version 2 of the GNU General Public License
- * as published by the Free Software Foundation
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
- * GNU General Public License for more details.
  */
 
 #ifndef _CAN_RX_OFFLOAD_H
@@ -23,7 +15,8 @@
 struct can_rx_offload {
 	struct net_device *dev;
 
-	unsigned int (*mailbox_read)(struct can_rx_offload *offload, struct can_frame *cf,
+	unsigned int (*mailbox_read)(struct can_rx_offload *offload,
+				     struct can_frame *cf,
 				     u32 *timestamp, unsigned int mb);
 
 	struct sk_buff_head skb_queue;
@@ -37,9 +30,13 @@
 	bool inc;
 };
 
-int can_rx_offload_add_timestamp(struct net_device *dev, struct can_rx_offload *offload);
-int can_rx_offload_add_fifo(struct net_device *dev, struct can_rx_offload *offload, unsigned int weight);
-int can_rx_offload_irq_offload_timestamp(struct can_rx_offload *offload, u64 reg);
+int can_rx_offload_add_timestamp(struct net_device *dev,
+				 struct can_rx_offload *offload);
+int can_rx_offload_add_fifo(struct net_device *dev,
+			    struct can_rx_offload *offload,
+			    unsigned int weight);
+int can_rx_offload_irq_offload_timestamp(struct can_rx_offload *offload,
+					 u64 reg);
 int can_rx_offload_irq_offload_fifo(struct can_rx_offload *offload);
 int can_rx_offload_queue_sorted(struct can_rx_offload *offload,
 				struct sk_buff *skb, u32 timestamp);
diff --git a/include/linux/can/skb.h b/include/linux/can/skb.h
index b3379a9..a954def 100644
--- a/include/linux/can/skb.h
+++ b/include/linux/can/skb.h
@@ -1,4 +1,4 @@
-/* SPDX-License-Identifier: GPL-2.0 */
+/* SPDX-License-Identifier: (GPL-2.0 OR BSD-3-Clause) */
 /*
  * linux/can/skb.h
  *