linux-kernel - Re: [PATCH][next] iio: tsl2x7x/tsl2772: avoid potential division by zero

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Message-ID: <20180603161234.008ac6c5@archlinux>
Date:   Sun, 3 Jun 2018 16:12:34 +0100
From:   Jonathan Cameron <jic23@...nel.org>
To:     Brian Masney <masneyb@...tation.org>
Cc:     Colin King <colin.king@...onical.com>,
        Hartmut Knaack <knaack.h@....de>,
        Lars-Peter Clausen <lars@...afoo.de>,
        Peter Meerwald-Stadler <pmeerw@...erw.net>,
        linux-iio@...r.kernel.org, kernel-janitors@...r.kernel.org,
        linux-kernel@...r.kernel.org
Subject: Re: [PATCH][next] iio: tsl2x7x/tsl2772: avoid potential division by
 zero

On Thu, 31 May 2018 05:28:01 -0400
Brian Masney <masneyb@...tation.org> wrote:

> On Wed, May 30, 2018 at 07:19:36PM +0100, Colin King wrote:
> > From: Colin Ian King <colin.king@...onical.com>
> > 
> > It may be possible for tsl2772_get_lux to return a zero lux value
> > and hence a division by zero can occur when lux_val is zero. Check
> > for this case and return -ERANGE to avoid the division by zero.
> > 
> > Detected by CoverityScan, CID#1469484 ("Division or modulo by zero")
> > 
> > Signed-off-by: Colin Ian King <colin.king@...onical.com>  
> 
> Acked-by: Brian Masney <masneyb@...tation.org>

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

As there was nothing in that branch that is going upstream until after
the merge window closes, I moved it forward to match staging/staging-next.

Jonathan