From: Kalle Valo <kvalo@codeaurora.org>
To: Arnd Bergmann <arnd@kernel.org>
Cc: Felix Fietkau <nbd@nbd.name>,
Lorenzo Bianconi <lorenzo.bianconi83@gmail.com>,
"David S. Miller" <davem@davemloft.net>,
Jakub Kicinski <kuba@kernel.org>, Arnd Bergmann <arnd@arndb.de>,
Ryder Lee <ryder.lee@mediatek.com>,
Matthias Brugger <matthias.bgg@gmail.com>,
Nathan Chancellor <nathan@kernel.org>,
Nick Desaulniers <ndesaulniers@google.com>,
Shayne Chen <shayne.chen@mediatek.com>,
Sean Wang <sean.wang@mediatek.com>,
linux-wireless@vger.kernel.org, netdev@vger.kernel.org,
linux-arm-kernel@lists.infradead.org,
linux-mediatek@lists.infradead.org, linux-kernel@vger.kernel.org,
clang-built-linux@googlegroups.com
Subject: Re: [PATCH 1/2] mt76: mt7915: fix unused 'mode' variable
Date: Thu, 25 Feb 2021 18:00:07 +0200 [thread overview]
Message-ID: <871rd4f88o.fsf@codeaurora.org> (raw)
In-Reply-To: <20210225145953.404859-1-arnd@kernel.org> (Arnd Bergmann's message of "Thu, 25 Feb 2021 15:59:14 +0100")
Arnd Bergmann <arnd@kernel.org> writes:
> From: Arnd Bergmann <arnd@arndb.de>
>
> clang points out a possible corner case in the mt7915_tm_set_tx_cont()
> function if called with invalid arguments:
>
> drivers/net/wireless/mediatek/mt76/mt7915/testmode.c:593:2: warning: variable 'mode' is used uninitialized whenever switch default is taken [-Wsometimes-uninitialized]
> default:
> ^~~~~~~
> drivers/net/wireless/mediatek/mt76/mt7915/testmode.c:597:13: note: uninitialized use occurs here
> rateval = mode << 6 | rate_idx;
> ^~~~
> drivers/net/wireless/mediatek/mt76/mt7915/testmode.c:506:37: note: initialize the variable 'mode' to silence this warning
> u8 rate_idx = td->tx_rate_idx, mode;
> ^
>
> Change it to return an error instead of continuing with invalid data
> here.
>
> Fixes: 3f0caa3cbf94 ("mt76: mt7915: add support for continuous tx in testmode")
> Signed-off-by: Arnd Bergmann <arnd@arndb.de>
Felix, can I take these two to wireless-drivers? An ack would be good.
--
https://patchwork.kernel.org/project/linux-wireless/list/
https://wireless.wiki.kernel.org/en/developers/documentation/submittingpatches
next prev parent reply other threads:[~2021-02-25 16:02 UTC|newest]
Thread overview: 7+ messages / expand[flat|nested] mbox.gz Atom feed top
2021-02-25 14:59 [PATCH 1/2] mt76: mt7915: fix unused 'mode' variable Arnd Bergmann
2021-02-25 14:59 ` [PATCH 2/2] mt76: mt7921: remove incorrect error handling Arnd Bergmann
2021-02-25 21:41 ` Nick Desaulniers
2021-02-26 9:22 ` Kalle Valo
2021-02-25 16:00 ` Kalle Valo [this message]
2021-02-25 17:58 ` [PATCH 1/2] mt76: mt7915: fix unused 'mode' variable Nathan Chancellor
2021-02-26 9:23 ` Kalle Valo
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