Re: [PATCH] staging: mt7621-pinctrl: Use correct pointer type argument for sizeof

From: Dan Carpenter
Date: Mon Apr 20 2020 - 08:21:33 EST


On Mon, Apr 20, 2020 at 08:37:55PM +0800, Jason Yan wrote:
> Fix the following coccicheck warning:
>
> drivers/staging/mt7621-pinctrl/pinctrl-rt2880.c:223:14-36: WARNING: Use
> correct pointer type argument for sizeof
>
> Signed-off-by: Jason Yan <yanaijie@xxxxxxxxxx>
> ---
> drivers/staging/mt7621-pinctrl/pinctrl-rt2880.c | 2 +-
> 1 file changed, 1 insertion(+), 1 deletion(-)
>
> diff --git a/drivers/staging/mt7621-pinctrl/pinctrl-rt2880.c b/drivers/staging/mt7621-pinctrl/pinctrl-rt2880.c
> index d0f06790d38f..8883f2a8ea57 100644
> --- a/drivers/staging/mt7621-pinctrl/pinctrl-rt2880.c
> +++ b/drivers/staging/mt7621-pinctrl/pinctrl-rt2880.c
> @@ -220,7 +220,7 @@ static int rt2880_pinmux_index(struct rt2880_priv *p)
> /* allocate our function and group mapping index buffers */
> f = p->func = devm_kcalloc(p->dev,
> p->func_count,
> - sizeof(struct rt2880_pmx_func),
> + sizeof(struct rt2880_pmx_func *),

Yes. This fixes a bug. We were allocating too much data. But the
prefered style is:

sizeof(*p->func),

Please could you resend?

regards,
dan carpenter