linux-kernel - RE: [PATCH 3/3] ASoC: da7218: Improve a size determination in da7218_i2c

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Date:   Fri, 24 Nov 2017 11:50:42 +0000
From:   Adam Thomson <Adam.Thomson.Opensource@...semi.com>
To:     SF Markus Elfring <elfring@...rs.sourceforge.net>,
        "alsa-devel@...a-project.org" <alsa-devel@...a-project.org>,
        "Support Opensource" <Support.Opensource@...semi.com>,
        Adam Thomson <Adam.Thomson.Opensource@...semi.com>,
        Jaroslav Kysela <perex@...ex.cz>,
        "Liam Girdwood" <lgirdwood@...il.com>,
        Mark Brown <broonie@...nel.org>, Takashi Iwai <tiwai@...e.com>
CC:     LKML <linux-kernel@...r.kernel.org>,
        "kernel-janitors@...r.kernel.org" <kernel-janitors@...r.kernel.org>
Subject: RE: [PATCH 3/3] ASoC: da7218: Improve a size determination in
 da7218_i2c_probe()

On 23 November 2017 20:08, SF Markus Elfring wrote:

> From: Markus Elfring <elfring@...rs.sourceforge.net>
> Date: Thu, 23 Nov 2017 20:50:44 +0100
> 
> Replace the specification of a data structure by a pointer dereference
> as the parameter for the operator "sizeof" to make the corresponding size
> determination a bit safer according to the Linux coding style convention.
> 
> This issue was detected by using the Coccinelle software.
> 
> Signed-off-by: Markus Elfring <elfring@...rs.sourceforge.net>

Acked-by: Adam Thomson <Adam.Thomson.Opensource@...semi.com>

> ---
>  sound/soc/codecs/da7218.c | 3 +--
>  1 file changed, 1 insertion(+), 2 deletions(-)
> 
> diff --git a/sound/soc/codecs/da7218.c b/sound/soc/codecs/da7218.c
> index 93a0cb741751..0c1933a98995 100644
> --- a/sound/soc/codecs/da7218.c
> +++ b/sound/soc/codecs/da7218.c
> @@ -3269,8 +3269,7 @@ static int da7218_i2c_probe(struct i2c_client *i2c,
>  	struct da7218_priv *da7218;
>  	int ret;
> 
> -	da7218 = devm_kzalloc(&i2c->dev, sizeof(struct da7218_priv),
> -			      GFP_KERNEL);
> +	da7218 = devm_kzalloc(&i2c->dev, sizeof(*da7218), GFP_KERNEL);
>  	if (!da7218)
>  		return -ENOMEM;
> 
> --
> 2.15.0