netdev - Re: [PATCH] net/wireless: add debugfs exit function

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Date:   Fri, 22 Apr 2022 08:57:25 +0300
From:   Kalle Valo <kvalo@...nel.org>
To:     Bernard Zhao <zhaojunkui2008@....com>
Cc:     Jakub Kicinski <kubakici@...pl>,
        "David S. Miller" <davem@...emloft.net>,
        Paolo Abeni <pabeni@...hat.com>,
        Matthias Brugger <matthias.bgg@...il.com>,
        linux-wireless@...r.kernel.org, netdev@...r.kernel.org,
        linux-arm-kernel@...ts.infradead.org,
        linux-mediatek@...ts.infradead.org, linux-kernel@...r.kernel.org,
        bernard@...o.com
Subject: Re: [PATCH] net/wireless: add debugfs exit function

Bernard Zhao <zhaojunkui2008@....com> writes:

> This patch add exit debugfs function to mt7601u.
> Debugfs need to be cleanup when module is unloaded or load fail.

"load fail"? Please be more specific, are you saying that the second
module load fails or what?

>  drivers/net/wireless/mediatek/mt7601u/debugfs.c | 9 +++++++--
>  drivers/net/wireless/mediatek/mt7601u/init.c    | 1 +
>  drivers/net/wireless/mediatek/mt7601u/mt7601u.h | 1 +

The title should be:

mt7601u: add debugfs exit function

> --- a/drivers/net/wireless/mediatek/mt7601u/debugfs.c
> +++ b/drivers/net/wireless/mediatek/mt7601u/debugfs.c
> @@ -9,6 +9,8 @@
>  #include "mt7601u.h"
>  #include "eeprom.h"
>  
> +static struct dentry *dir;

How will this work when there are multiple mt7601u devices? Because of
that, avoid using non-const static variables.

-- 
https://patchwork.kernel.org/project/linux-wireless/list/

https://wireless.wiki.kernel.org/en/developers/documentation/submittingpatches