write in 30M

hc

2024-02-20 ea08eeccae9297f7aabd2ef7f0c2517ac4549acc

 kernel/drivers/net/bonding/bond_debugfs.c
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@@ -45,19 +45,7 @@
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 	return 0;
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 }
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-
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-static int bond_debug_rlb_hash_open(struct inode *inode, struct file *file)
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-{
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-	return single_open(file, bond_debug_rlb_hash_show, inode->i_private);
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-}
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-
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-static const struct file_operations bond_debug_rlb_hash_fops = {
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-	.owner		= THIS_MODULE,
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-	.open		= bond_debug_rlb_hash_open,
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-	.read		= seq_read,
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-	.llseek		= seq_lseek,
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-	.release	= single_release,
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-};
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+DEFINE_SHOW_ATTRIBUTE(bond_debug_rlb_hash);
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 void bond_debug_register(struct bonding *bond)
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 {
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@@ -66,11 +54,6 @@
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 	bond->debug_dir =
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 		debugfs_create_dir(bond->dev->name, bonding_debug_root);
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-
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-	if (!bond->debug_dir) {
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-		netdev_warn(bond->dev, "failed to register to debugfs\n");
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-		return;
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-	}
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 	debugfs_create_file("rlb_hash_table", 0400, bond->debug_dir,
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 				bond, &bond_debug_rlb_hash_fops);
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@@ -93,7 +76,7 @@
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 	d = debugfs_rename(bonding_debug_root, bond->debug_dir,
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 			   bonding_debug_root, bond->dev->name);
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-	if (d) {
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+	if (!IS_ERR(d)) {
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 		bond->debug_dir = d;
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 	} else {
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 		netdev_warn(bond->dev, "failed to reregister, so just unregister old one\n");