From: Wolfram Sang <wsa@the-dreams.de>
To: Arnd Bergmann <arnd@arndb.de>
Cc: Marek Vasut <marek.vasut@gmail.com>,
Jonathan Cameron <jic23@kernel.org>,
stable@vger.kernel.org,
Marek Vasut <marek.vasut+renesas@gmail.com>,
Geert Uytterhoeven <geert+renesas@glider.be>,
Simon Horman <horms+renesas@verge.net.au>,
linux-renesas-soc@vger.kernel.org,
Hartmut Knaack <knaack.h@gmx.de>,
Lars-Peter Clausen <lars@metafoo.de>,
Peter Meerwald-Stadler <pmeerw@pmeerw.net>,
Rob Herring <robh@kernel.org>,
Kuninori Morimoto <kuninori.morimoto.gx@renesas.com>,
linux-iio@vger.kernel.org, linux-kernel@vger.kernel.org
Subject: Re: [PATCH] iio: adc: gyroadc: fix uninitialized return code
Date: Thu, 4 Jul 2019 14:07:56 +0200 [thread overview]
Message-ID: <20190704120756.GA1582@kunai> (raw)
In-Reply-To: <20190704113800.3299636-1-arnd@arndb.de>
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On Thu, Jul 04, 2019 at 01:37:47PM +0200, Arnd Bergmann wrote:
> gcc-9 complains about a blatant uninitialized variable use that
> all earlier compiler versions missed:
>
> drivers/iio/adc/rcar-gyroadc.c:510:5: warning: 'ret' may be used uninitialized in this function [-Wmaybe-uninitialized]
>
> Return -EINVAL instead here.
>
> Cc: stable@vger.kernel.org
> Fixes: 059c53b32329 ("iio: adc: Add Renesas GyroADC driver")
> Signed-off-by: Arnd Bergmann <arnd@arndb.de>
This is correct but missing that the above 'return ret' is broken, too.
ret is initialized but 0 in that case.
And maybe we can use something else than -EINVAL for this case? I am on
the go right now, I will look for a suggestion later.
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next prev parent reply other threads:[~2019-07-04 12:08 UTC|newest]
Thread overview: 7+ messages / expand[flat|nested] mbox.gz Atom feed top
2019-07-04 11:37 [PATCH] iio: adc: gyroadc: fix uninitialized return code Arnd Bergmann
2019-07-04 11:49 ` Geert Uytterhoeven
2019-07-04 12:07 ` Wolfram Sang [this message]
2019-07-04 12:10 ` Geert Uytterhoeven
2019-07-04 15:27 ` Marek Vasut
2019-07-04 19:55 ` Wolfram Sang
2019-07-14 15:09 ` Jonathan Cameron
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