Update Linux to v5.4.2

Change-Id: Idf6911045d9d382da2cfe01b1edff026404ac8fd
diff --git a/net/hsr/hsr_main.h b/net/hsr/hsr_main.h
index 9b9909e..96fac69 100644
--- a/net/hsr/hsr_main.h
+++ b/net/hsr/hsr_main.h
@@ -1,10 +1,6 @@
+/* SPDX-License-Identifier: GPL-2.0 */
 /* Copyright 2011-2014 Autronica Fire and Security AS
  *
- * 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; either version 2 of the License, or (at your option)
- * any later version.
- *
  * Author(s):
  *	2011-2014 Arvid Brodin, arvid.brodin@alten.se
  */
@@ -15,7 +11,6 @@
 #include <linux/netdevice.h>
 #include <linux/list.h>
 
-
 /* Time constants as specified in the HSR specification (IEC-62439-3 2010)
  * Table 8.
  * All values in milliseconds.
@@ -24,7 +19,6 @@
 #define HSR_NODE_FORGET_TIME		60000 /* ms */
 #define HSR_ANNOUNCE_INTERVAL		  100 /* ms */
 
-
 /* By how much may slave1 and slave2 timestamps of latest received frame from
  * each node differ before we notify of communication problem?
  */
@@ -32,17 +26,14 @@
 #define HSR_SEQNR_START			(USHRT_MAX - 1024)
 #define HSR_SUP_SEQNR_START		(HSR_SEQNR_START / 2)
 
-
 /* How often shall we check for broken ring and remove node entries older than
  * HSR_NODE_FORGET_TIME?
  */
 #define PRUNE_PERIOD			 3000 /* ms */
 
-
 #define HSR_TLV_ANNOUNCE		   22
 #define HSR_TLV_LIFE_CHECK		   23
 
-
 /* HSR Tag.
  * As defined in IEC-62439-3:2010, the HSR tag is really { ethertype = 0x88FB,
  * path, LSDU_size, sequence Nr }. But we let eth_header() create { h_dest,
@@ -83,15 +74,14 @@
 
 static inline void set_hsr_tag_path(struct hsr_tag *ht, u16 path)
 {
-	ht->path_and_LSDU_size = htons(
-			(ntohs(ht->path_and_LSDU_size) & 0x0FFF) | (path << 12));
+	ht->path_and_LSDU_size =
+		htons((ntohs(ht->path_and_LSDU_size) & 0x0FFF) | (path << 12));
 }
 
 static inline void set_hsr_tag_LSDU_size(struct hsr_tag *ht, u16 LSDU_size)
 {
-	ht->path_and_LSDU_size = htons(
-			(ntohs(ht->path_and_LSDU_size) & 0xF000) |
-			(LSDU_size & 0x0FFF));
+	ht->path_and_LSDU_size = htons((ntohs(ht->path_and_LSDU_size) &
+				       0xF000) | (LSDU_size & 0x0FFF));
 }
 
 struct hsr_ethhdr {
@@ -99,39 +89,38 @@
 	struct hsr_tag	hsr_tag;
 } __packed;
 
-
 /* HSR Supervision Frame data types.
  * Field names as defined in the IEC:2010 standard for HSR.
  */
 struct hsr_sup_tag {
-	__be16		path_and_HSR_Ver;
+	__be16		path_and_HSR_ver;
 	__be16		sequence_nr;
-	__u8		HSR_TLV_Type;
-	__u8		HSR_TLV_Length;
+	__u8		HSR_TLV_type;
+	__u8		HSR_TLV_length;
 } __packed;
 
 struct hsr_sup_payload {
-	unsigned char	MacAddressA[ETH_ALEN];
+	unsigned char	macaddress_A[ETH_ALEN];
 } __packed;
 
 static inline u16 get_hsr_stag_path(struct hsr_sup_tag *hst)
 {
-	return get_hsr_tag_path((struct hsr_tag *) hst);
+	return get_hsr_tag_path((struct hsr_tag *)hst);
 }
 
 static inline u16 get_hsr_stag_HSR_ver(struct hsr_sup_tag *hst)
 {
-	return get_hsr_tag_LSDU_size((struct hsr_tag *) hst);
+	return get_hsr_tag_LSDU_size((struct hsr_tag *)hst);
 }
 
 static inline void set_hsr_stag_path(struct hsr_sup_tag *hst, u16 path)
 {
-	set_hsr_tag_path((struct hsr_tag *) hst, path);
+	set_hsr_tag_path((struct hsr_tag *)hst, path);
 }
 
-static inline void set_hsr_stag_HSR_Ver(struct hsr_sup_tag *hst, u16 HSR_Ver)
+static inline void set_hsr_stag_HSR_ver(struct hsr_sup_tag *hst, u16 HSR_ver)
 {
-	set_hsr_tag_LSDU_size((struct hsr_tag *) hst, HSR_Ver);
+	set_hsr_tag_LSDU_size((struct hsr_tag *)hst, HSR_ver);
 }
 
 struct hsrv0_ethhdr_sp {
@@ -145,7 +134,6 @@
 	struct hsr_sup_tag	hsr_sup;
 } __packed;
 
-
 enum hsr_port_type {
 	HSR_PT_NONE = 0,	/* Must be 0, used by framereg */
 	HSR_PT_SLAVE_A,
@@ -171,10 +159,14 @@
 	struct timer_list	prune_timer;
 	int announce_count;
 	u16 sequence_nr;
-	u16 sup_sequence_nr;			/* For HSRv1 separate seq_nr for supervision */
-	u8 protVersion;					/* Indicate if HSRv0 or HSRv1. */
+	u16 sup_sequence_nr;	/* For HSRv1 separate seq_nr for supervision */
+	u8 prot_version;		/* Indicate if HSRv0 or HSRv1. */
 	spinlock_t seqnr_lock;			/* locking for sequence_nr */
 	unsigned char		sup_multicast_addr[ETH_ALEN];
+#ifdef	CONFIG_DEBUG_FS
+	struct dentry *node_tbl_root;
+	struct dentry *node_tbl_file;
+#endif
 };
 
 #define hsr_for_each_port(hsr, port) \
@@ -187,8 +179,22 @@
 {
 	struct hsr_ethhdr *hsr_ethhdr;
 
-	hsr_ethhdr = (struct hsr_ethhdr *) skb_mac_header(skb);
+	hsr_ethhdr = (struct hsr_ethhdr *)skb_mac_header(skb);
 	return ntohs(hsr_ethhdr->hsr_tag.sequence_nr);
 }
 
+#if IS_ENABLED(CONFIG_DEBUG_FS)
+int hsr_debugfs_init(struct hsr_priv *priv, struct net_device *hsr_dev);
+void hsr_debugfs_term(struct hsr_priv *priv);
+#else
+static inline int hsr_debugfs_init(struct hsr_priv *priv,
+				   struct net_device *hsr_dev)
+{
+	return 0;
+}
+
+static inline void hsr_debugfs_term(struct hsr_priv *priv)
+{}
+#endif
+
 #endif /*  __HSR_PRIVATE_H */