linux-kernel - Re: [PATCH v2] staging: rtl8192e: remove bogus ssid character sign test

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Date:   Tue, 25 Oct 2022 15:34:21 +0300
From:   Dan Carpenter <dan.carpenter@...cle.com>
To:     "Jason A. Donenfeld" <Jason@...c4.com>
Cc:     linux-kernel@...r.kernel.org, linux-staging@...ts.linux.dev,
        gregkh@...uxfoundation.org, kvalo@...nel.org,
        linux-wireless@...r.kernel.org
Subject: Re: [PATCH v2] staging: rtl8192e: remove bogus ssid character sign
 test

On Tue, Oct 25, 2022 at 02:21:50PM +0200, Jason A. Donenfeld wrote:
> This error triggers on some architectures with unsigned `char` types:
> 
> drivers/staging/rtl8192e/rtllib_softmac_wx.c:459 rtllib_wx_set_essid() warn: impossible condition '(extra[i] < 0) => (0-255 < 0)'
> 
> But actually, the entire test is bogus, as ssids don't have any sign
> validity rules like that. So just remove this check look all together.
> 
> Cc: Greg Kroah-Hartman <gregkh@...uxfoundation.org>
> Cc: linux-staging@...ts.linux.dev
> Signed-off-by: Jason A. Donenfeld <Jason@...c4.com>
> ---
> Changes v1->v2:
> - Remove ssid sign test entirely rather than casting to `s8 *`.

Thanks!

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

regards,
dan carpenter