Update Linux to v5.4.2

Change-Id: Idf6911045d9d382da2cfe01b1edff026404ac8fd
diff --git a/drivers/net/bonding/bond_debugfs.c b/drivers/net/bonding/bond_debugfs.c
index 3868e1a..f3f86ef 100644
--- a/drivers/net/bonding/bond_debugfs.c
+++ b/drivers/net/bonding/bond_debugfs.c
@@ -45,19 +45,7 @@
 
 	return 0;
 }
-
-static int bond_debug_rlb_hash_open(struct inode *inode, struct file *file)
-{
-	return single_open(file, bond_debug_rlb_hash_show, inode->i_private);
-}
-
-static const struct file_operations bond_debug_rlb_hash_fops = {
-	.owner		= THIS_MODULE,
-	.open		= bond_debug_rlb_hash_open,
-	.read		= seq_read,
-	.llseek		= seq_lseek,
-	.release	= single_release,
-};
+DEFINE_SHOW_ATTRIBUTE(bond_debug_rlb_hash);
 
 void bond_debug_register(struct bonding *bond)
 {
@@ -67,11 +55,6 @@
 	bond->debug_dir =
 		debugfs_create_dir(bond->dev->name, bonding_debug_root);
 
-	if (!bond->debug_dir) {
-		netdev_warn(bond->dev, "failed to register to debugfs\n");
-		return;
-	}
-
 	debugfs_create_file("rlb_hash_table", 0400, bond->debug_dir,
 				bond, &bond_debug_rlb_hash_fops);
 }