linux-kernel - Re: [PATCH] amd/display/amdgpu_dm: delete same check in if condition

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Date:   Tue, 10 Nov 2020 09:13:47 -0500
From:   Harry Wentland <harry.wentland@....com>
To:     Bernard Zhao <bernard@...o.com>, Leo Li <sunpeng.li@....com>,
        Alex Deucher <alexander.deucher@....com>,
        Christian König <christian.koenig@....com>,
        David Airlie <airlied@...ux.ie>,
        Daniel Vetter <daniel@...ll.ch>,
        Nicholas Kazlauskas <nicholas.kazlauskas@....com>,
        Rodrigo Siqueira <Rodrigo.Siqueira@....com>,
        Mikita Lipski <mikita.lipski@....com>,
        Stylon Wang <stylon.wang@....com>,
        Bhawanpreet Lakha <Bhawanpreet.Lakha@....com>,
        Roman Li <Roman.Li@....com>, hersen wu <hersenxs.wu@....com>,
        Aurabindo Pillai <aurabindo.pillai@....com>,
        Alexander Monakov <amonakov@...ras.ru>,
        amd-gfx@...ts.freedesktop.org, dri-devel@...ts.freedesktop.org,
        linux-kernel@...r.kernel.org
Cc:     opensource.kernel@...o.com
Subject: Re: [PATCH] amd/display/amdgpu_dm: delete same check in if condition

On 2020-11-10 3:03 a.m., Bernard Zhao wrote:
> In function amdgpu_dm_connector_get_modes, drm_edid_is_valid
> will check weather (!edid), no need to check again in the if
> branch.
> 
> Signed-off-by: Bernard Zhao <bernard@...o.com>

Reviewed-by: Harry Wentland <harry.wentland@....com>

Harry

> ---
>   drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm.c | 2 +-
>   1 file changed, 1 insertion(+), 1 deletion(-)
> 
> diff --git a/drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm.c b/drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm.c
> index e93e18c06c0e..0a283d07fe10 100644
> --- a/drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm.c
> +++ b/drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm.c
> @@ -6352,7 +6352,7 @@ static int amdgpu_dm_connector_get_modes(struct drm_connector *connector)
>   
>   	encoder = amdgpu_dm_connector_to_encoder(connector);
>   
> -	if (!edid || !drm_edid_is_valid(edid)) {
> +	if (!drm_edid_is_valid(edid)) {
>   		amdgpu_dm_connector->num_modes =
>   				drm_add_modes_noedid(connector, 640, 480);
>   	} else {
>