linux-kernel - Re: [PATCH v5] wifi: ath5k: remove phydir check from ath5k_debug_init

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Message-ID: <0eabcf39-dfd3-bff9-5d61-ff8fca7e3ba1@kernel.org>
Date:   Fri, 14 Jul 2023 09:11:23 +0200
From:   Jiri Slaby <jirislaby@...nel.org>
To:     Minjie Du <duminjie@...o.com>,
        Nick Kossifidis <mickflemm@...il.com>,
        Luis Chamberlain <mcgrof@...nel.org>,
        Kalle Valo <kvalo@...nel.org>,
        "open list:ATHEROS ATH5K WIRELESS DRIVER" 
        <linux-wireless@...r.kernel.org>,
        open list <linux-kernel@...r.kernel.org>
Cc:     opensource.kernel@...o.com
Subject: Re: [PATCH v5] wifi: ath5k: remove phydir check from
 ath5k_debug_init_device()

On 14. 07. 23, 9:10, Minjie Du wrote:
> 'phydir' returned from debugfs_create_dir() is checked against NULL.
> As the debugfs API returns an error pointer,
> the returned value can never be NULL.
> 
> Therefore, as the documentation suggests that the check is unnecessary
> and other debugfs calls have no operation in error cases,
> it is advisable to completely eliminate the check.
> 
> Signed-off-by: Minjie Du <duminjie@...o.com>

Reviewed-by: Jiri Slaby <jirislaby@...nel.org>

thanks,
-- 
js
suse labs