linux-kernel - Re: [PATCH] [v2] iio: adc: gyroadc: fix uninitialized return code

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Date:   Sat, 27 Jul 2019 21:58:26 +0100
From:   Jonathan Cameron <jic23@...nel.org>
To:     Wolfram Sang <wsa@...-dreams.de>
Cc:     Arnd Bergmann <arnd@...db.de>, Marek Vasut <marek.vasut@...il.com>,
        stable@...r.kernel.org,
        Marek Vasut <marek.vasut+renesas@...il.com>,
        Geert Uytterhoeven <geert+renesas@...der.be>,
        Simon Horman <horms+renesas@...ge.net.au>,
        linux-renesas-soc@...r.kernel.org,
        Hartmut Knaack <knaack.h@....de>,
        Lars-Peter Clausen <lars@...afoo.de>,
        Peter Meerwald-Stadler <pmeerw@...erw.net>,
        Kuninori Morimoto <kuninori.morimoto.gx@...esas.com>,
        Rob Herring <robh@...nel.org>, linux-iio@...r.kernel.org,
        linux-kernel@...r.kernel.org
Subject: Re: [PATCH] [v2] iio: adc: gyroadc: fix uninitialized return code

On Thu, 18 Jul 2019 16:02:27 +0200
Wolfram Sang <wsa@...-dreams.de> wrote:

> On Thu, Jul 18, 2019 at 03:57:49PM +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 and a few lines above it where
> > we accidentally return 0 on failure.
> > 
> > Cc: stable@...r.kernel.org
> > Fixes: 059c53b32329 ("iio: adc: Add Renesas GyroADC driver")
> > Signed-off-by: Arnd Bergmann <arnd@...db.de>  
> 
> Yes, I checked the other error paths, too, and they look proper to me.
> 
> Reviewed-by: Wolfram Sang <wsa+renesas@...g-engineering.com>
> 

Thanks for sorting that second case as well.

Applied to the fixes-togreg branch of iio.git.

Thanks,

Jonathan