linux-kernel - Re: [PATCH 1/1] debugfs: use IS

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Date:   Thu, 2 Sep 2021 12:31:59 +0200
From:   Christian König <christian.koenig@....com>
To:     Nirmoy Das <nirmoy.das@....com>, rafael@...nel.org
Cc:     linux-kernel@...r.kernel.org, gregkh@...uxfoundation.org
Subject: Re: [PATCH 1/1] debugfs: use IS_ERR to check for error



Am 02.09.21 um 12:29 schrieb Nirmoy Das:
> debugfs_create_file() returns encoded error so
> use IS_ERR for checking return value.
>
> References: https://gitlab.freedesktop.org/drm/amd/-/issues/1686
> Signed-off-by: Nirmoy Das <nirmoy.das@....com>

Reviewed-by: Christian König <christian.koenig@....com>

> ---
>   fs/debugfs/inode.c | 2 +-
>   1 file changed, 1 insertion(+), 1 deletion(-)
>
> diff --git a/fs/debugfs/inode.c b/fs/debugfs/inode.c
> index 8129a430d789..2f117c57160d 100644
> --- a/fs/debugfs/inode.c
> +++ b/fs/debugfs/inode.c
> @@ -528,7 +528,7 @@ void debugfs_create_file_size(const char *name, umode_t mode,
>   {
>   	struct dentry *de = debugfs_create_file(name, mode, parent, data, fops);
>   
> -	if (de)
> +	if (!IS_ERR(de))
>   		d_inode(de)->i_size = file_size;
>   }
>   EXPORT_SYMBOL_GPL(debugfs_create_file_size);