linux-kernel - Re: [PATCH v2 0/3] staging: rtl8192u: fix rmmod warn when wlan0 is renamed

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Date:   Tue, 19 Jul 2022 11:04:31 +0300
From:   Dan Carpenter <dan.carpenter@...cle.com>
To:     Tong Zhang <ztong0001@...il.com>
Cc:     Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
        Jakub Kicinski <kuba@...nel.org>,
        Colin Ian King <colin.king@...el.com>,
        Saurav Girepunje <saurav.girepunje@...il.com>,
        Nathan Chancellor <nathan@...nel.org>,
        Johan Hovold <johan@...nel.org>, linux-kernel@...r.kernel.org,
        linux-staging@...ts.linux.dev, Zheyu Ma <zheyuma97@...il.com>
Subject: Re: [PATCH v2 0/3] staging: rtl8192u: fix rmmod warn when wlan0 is
 renamed

On Mon, Jul 18, 2022 at 10:50:35PM -0700, Tong Zhang wrote:
> There are 4 debug files created under /proc/net/[Devname]. Devname could
> be wlan0 initially, however it could be renamed later to e.g. enx00e04c000002.
> This will cause problem during debug file teardown since it uses
> netdev->name which is no longer wlan0. To solve this problem, add a
> notifier to handle device renaming.
> 
> Also, due to this is purely for debuging as files are created read only,
> move this to debugfs like other NIC drivers do instead of using procfs.
> 
> Reported-by: Zheyu Ma <zheyuma97@...il.com>
> Tested-by: Zheyu Ma <zheyuma97@...il.com>
> Signed-off-by: Tong Zhang <ztong0001@...il.com>
> 
> v2: break down patch and fix pointer check
> 
> Tong Zhang (3):
>   staging: rtl8192u: move debug stuff to its own file
>   staging: rtl8192u: move debug files to debugfs
>   staging: rtl8192u: fix rmmod warn when wlan0 is renamed

Thanks!  This is much better.

Reviewed-by: Dan Carpenter <dan.carpenter@...cle.com>

regards,
dan carpenter