linux-kernel - Re: [PATCH v1] drivers: wireless: ath5k: fix parameter check in ath5k_debug_init

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Date:   Wed, 12 Jul 2023 11:27:52 -0700
From:   Luis Chamberlain <mcgrof@...nel.org>
To:     Minjie Du <duminjie@...o.com>
Cc:     Jiri Slaby <jirislaby@...nel.org>,
        Nick Kossifidis <mickflemm@...il.com>,
        Kalle Valo <kvalo@...nel.org>,
        "open list:ATHEROS ATH5K WIRELESS DRIVER" 
        <linux-wireless@...r.kernel.org>,
        open list <linux-kernel@...r.kernel.org>,
        opensource.kernel@...o.com
Subject: Re: [PATCH v1] drivers: wireless: ath5k: fix parameter check in
 ath5k_debug_init_device

On Wed, Jul 12, 2023 at 08:42:59PM +0800, Minjie Du wrote:
> Make IS_ERR() judge the debugfs_create_dir() function return
> in ath5k_debug_init_device().
> 
> Signed-off-by: Minjie Du <duminjie@...o.com>
> ---
>  drivers/net/wireless/ath/ath5k/debug.c | 2 +-
>  1 file changed, 1 insertion(+), 1 deletion(-)
> 
> diff --git a/drivers/net/wireless/ath/ath5k/debug.c b/drivers/net/wireless/ath/ath5k/debug.c
> index 4b41160e5..08058b3f7 100644
> --- a/drivers/net/wireless/ath/ath5k/debug.c
> +++ b/drivers/net/wireless/ath/ath5k/debug.c
> @@ -982,7 +982,7 @@ ath5k_debug_init_device(struct ath5k_hw *ah)
>  	ah->debug.level = ath5k_debug;
>  
>  	phydir = debugfs_create_dir("ath5k", ah->hw->wiphy->debugfsdir);
> -	if (!phydir)
> +	if (IS_ERR(phydir))

Please use IS_ERR_OR_NULL() instead.

With that change added:

Acked-by: Luis Chamberlain <mcgrof@...nel.org>

  Luis