Subject: Re: [PATCH net v3] net: bonding: Fix error checking for debugfs_create_dir()

From: Tariq Toukan <[email-masked]>
Date: Mon, 17 Jul 2023 21:36:58 +0300

On 17/07/2023 11:53, Wang Ming wrote:
> The debugfs_create_dir() function returns error pointers,
> it never returns NULL. Most incorrect error checks were fixed,
> but the one in bond_create_debugfs() was forgotten.
> 
> Fixes: 52333512701b ("net: bonding: remove unnecessary braces")

It's not this commit to blame...
Issue was there in first place, starting in commit f073c7ca29a4 
("bonding: add the debugfs facility to the bonding driver").

> Signed-off-by: Wang Ming <[email-masked]>
> ---
>   drivers/net/bonding/bond_debugfs.c | 2 +-
>   1 file changed, 1 insertion(+), 1 deletion(-)
> 
> diff --git a/drivers/net/bonding/bond_debugfs.c b/drivers/net/bonding/bond_debugfs.c
> index 594094526648..d4a82f276e87 100644
> --- a/drivers/net/bonding/bond_debugfs.c
> +++ b/drivers/net/bonding/bond_debugfs.c
> @@ -88,7 +88,7 @@ void bond_create_debugfs(void)
>   {
>   	bonding_debug_root = debugfs_create_dir("bonding", NULL);
>   
> -	if (!bonding_debug_root)
> +	if (IS_ERR(bonding_debug_root))
>   		pr_warn("Warning: Cannot create bonding directory in debugfs\n");
>   }
>