linux-kernel - Re: [v2] cw1200: fix bogus maybe-uninitialized warning

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Message-Id: <20161117064819.96A68615B1@smtp.codeaurora.org>
Date:   Thu, 17 Nov 2016 06:48:19 +0000 (UTC)
From:   Kalle Valo <kvalo@...eaurora.org>
To:     Arnd Bergmann <arnd@...db.de>
Cc:     Solomon Peachy <pizza@...ftnet.org>,
        David Laight <David.Laight@...LAB.COM>,
        Arnd Bergmann <arnd@...db.de>,
        Johannes Berg <johannes.berg@...el.com>,
        linux-wireless@...r.kernel.org, netdev@...r.kernel.org,
        linux-kernel@...r.kernel.org
Subject: Re: [v2] cw1200: fix bogus maybe-uninitialized warning

Arnd Bergmann <arnd@...db.de> wrote:
> On x86, the cw1200 driver produces a rather silly warning about the
> possible use of the 'ret' variable without an initialization
> presumably after being confused by the architecture specific definition
> of WARN_ON:
> 
> drivers/net/wireless/st/cw1200/wsm.c: In function ‘wsm_handle_rx’:
> drivers/net/wireless/st/cw1200/wsm.c:1457:9: error: ‘ret’ may be used uninitialized in this function [-Werror=maybe-uninitialized]
> 
> We have already checked that 'count' is larger than 0 here, so
> we know that 'ret' is initialized. Changing the 'for' loop
> into do/while also makes this clear to the compiler.
> 
> Suggested-by: David Laight <David.Laight@...LAB.COM>
> Signed-off-by: Arnd Bergmann <arnd@...db.de>

Patch applied to wireless-drivers-next.git, thanks.

7fc1503c906f cw1200: fix bogus maybe-uninitialized warning

-- 
https://patchwork.kernel.org/patch/9395413/

Documentation about submitting wireless patches and checking status
from patchwork:

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