linux-kernel - Re: [PATCH v1] drivers/net: intel: iwlwifi: fix two parameters check in iwl_mei_dbgfs

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Date:   Wed, 12 Jul 2023 16:01:22 +0200
From:   "Nicolas Escande" <nico.escande@...il.com>
To:     "Minjie Du" <duminjie@...o.com>,
        "Gregory Greenman" <gregory.greenman@...el.com>,
        "Kalle Valo" <kvalo@...nel.org>,
        "Stephen Rothwell" <sfr@...b.auug.org.au>,
        "open list:INTEL WIRELESS WIFI LINK (iwlwifi)" 
        <linux-wireless@...r.kernel.org>,
        "open list" <linux-kernel@...r.kernel.org>
Cc:     <opensource.kernel@...o.com>
Subject: Re: [PATCH v1] drivers/net: intel: iwlwifi: fix two parameters
 check in iwl_mei_dbgfs_register()

On Wed Jul 12, 2023 at 3:14 PM CEST, Minjie Du wrote:
> Make IS_ERR() judge the debugfs_create_dir() function return
> in iwl_mei_dbgfs_register().
>
> Signed-off-by: Minjie Du <duminjie@...o.com>
> ---
>  drivers/net/wireless/intel/iwlwifi/mei/main.c | 2 +-
>  1 file changed, 1 insertion(+), 1 deletion(-)
>
> diff --git a/drivers/net/wireless/intel/iwlwifi/mei/main.c b/drivers/net/wireless/intel/iwlwifi/mei/main.c
> index 54445f39f..e5d203a62 100644
> --- a/drivers/net/wireless/intel/iwlwifi/mei/main.c
> +++ b/drivers/net/wireless/intel/iwlwifi/mei/main.c
> @@ -1888,7 +1888,7 @@ static void iwl_mei_dbgfs_register(struct iwl_mei *mei)
>  {
>  	mei->dbgfs_dir = debugfs_create_dir(KBUILD_MODNAME, NULL);
>  
> -	if (!mei->dbgfs_dir)
> +	if (IS_ERR(mei->dbgfs_dir))
>  		return;

same as the other one

>  
>  	debugfs_create_ulong("status", S_IRUSR,