linux-kernel - Re: [PATCH] backlight: pwm_bl: Avoid open coded arithmetic in memory allocation

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Date:   Tue, 8 Feb 2022 08:53:56 +0000
From:   Lee Jones <lee.jones@...aro.org>
To:     Christophe JAILLET <christophe.jaillet@...adoo.fr>
Cc:     Thierry Reding <thierry.reding@...il.com>,
        Uwe Kleine-König 
        <u.kleine-koenig@...gutronix.de>,
        Daniel Thompson <daniel.thompson@...aro.org>,
        Jingoo Han <jingoohan1@...il.com>,
        Helge Deller <deller@....de>, linux-kernel@...r.kernel.org,
        kernel-janitors@...r.kernel.org, linux-pwm@...r.kernel.org,
        dri-devel@...ts.freedesktop.org, linux-fbdev@...r.kernel.org
Subject: Re: [PATCH] backlight: pwm_bl: Avoid open coded arithmetic in memory
 allocation

On Sat, 05 Feb 2022, Christophe JAILLET wrote:

> kmalloc_array()/kcalloc() should be used to avoid potential overflow when
> a multiplication is needed to compute the size of the requested memory.
> 
> So turn a kzalloc()+explicit size computation into an equivalent kcalloc().
> 
> Signed-off-by: Christophe JAILLET <christophe.jaillet@...adoo.fr>
> ---
>  drivers/video/backlight/pwm_bl.c | 9 ++++-----
>  1 file changed, 4 insertions(+), 5 deletions(-)

Applied, thanks.

-- 
Lee Jones [李琼斯]
Principal Technical Lead - Developer Services
Linaro.org │ Open source software for Arm SoCs
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