linux-kernel - Re: [PATCH] video: of: display_timing: Remove a redundant zeroing of memory

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Date:   Thu, 24 Mar 2022 07:38:08 +0100
From:   Helge Deller <deller@....de>
To:     Christophe JAILLET <christophe.jaillet@...adoo.fr>
Cc:     linux-kernel@...r.kernel.org, kernel-janitors@...r.kernel.org,
        linux-fbdev@...r.kernel.org, dri-devel@...ts.freedesktop.org
Subject: Re: [PATCH] video: of: display_timing: Remove a redundant zeroing of
 memory

On 3/22/22 21:33, Christophe JAILLET wrote:
> of_parse_display_timing() already call memset(0) on its 2nd argument, so
> there is no need to clear it explicitly before calling this function.
>
> Use kmalloc() instead of kzalloc() to save a few cycles.
>
> Signed-off-by: Christophe JAILLET <christophe.jaillet@...adoo.fr>

applied.

Thanks!
Helge

> ---
>  drivers/video/of_display_timing.c | 2 +-
>  1 file changed, 1 insertion(+), 1 deletion(-)
>
> diff --git a/drivers/video/of_display_timing.c b/drivers/video/of_display_timing.c
> index f93b6abbe258..bebd371c6b93 100644
> --- a/drivers/video/of_display_timing.c
> +++ b/drivers/video/of_display_timing.c
> @@ -199,7 +199,7 @@ struct display_timings *of_get_display_timings(const struct device_node *np)
>  		struct display_timing *dt;
>  		int r;
>
> -		dt = kzalloc(sizeof(*dt), GFP_KERNEL);
> +		dt = kmalloc(sizeof(*dt), GFP_KERNEL);
>  		if (!dt) {
>  			pr_err("%pOF: could not allocate display_timing struct\n",
>  				np);