Re: [PATCH] drm/amd/display: Remove redundant AUTO color format handling in else

[Leo Li]

On 2026-07-20 09:03, Nicolas Frattaroli wrote:
> The AUTO connector color format is handled in the earlier branches for
> both RGB and YUV420. The repeated check in the else branch is therefore
> redundant.
> 
> Remove it to make the code less confusing to read.
> 
> Reported-by: Dan Carpenter <error27@xxxxxxxxx>
> Closes: https://lore.kernel.org/r/alCcJmDeIYEE94Eh@stanley.mountain/
> Fixes: 8a0343b03b98 ("drm/amdgpu: Implement "color format" DRM property")
> Signed-off-by: Nicolas Frattaroli <nicolas.frattaroli@xxxxxxxxxxxxx>

Reviewed-by: Leo Li <sunpeng.li@xxxxxxx>

Thanks!

> ---
>  drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm_connector.c | 7 +------
>  1 file changed, 1 insertion(+), 6 deletions(-)
> 
> diff --git a/drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm_connector.c b/drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm_connector.c
> index 88f938a8f24f..ea277c991234 100644
> --- a/drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm_connector.c
> +++ b/drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm_connector.c
> @@ -854,12 +854,7 @@ static void fill_stream_properties_from_drm_display_mode(
>  		 * error bubbles up to userspace. This way, userspace knows it
>  		 * needs to make a better choice.
>  		 */
> -		if (connector_state->color_format != DRM_CONNECTOR_COLOR_FORMAT_AUTO)
> -			timing_out->pixel_encoding = PIXEL_ENCODING_UNDEFINED;
> -		else if (drm_mode_is_420_only(info, mode_in))
> -			timing_out->pixel_encoding = PIXEL_ENCODING_YCBCR420;
> -		else
> -			timing_out->pixel_encoding = PIXEL_ENCODING_RGB;
> +		timing_out->pixel_encoding = PIXEL_ENCODING_UNDEFINED;
>  	}
>  
>  	timing_out->timing_3d_format = TIMING_3D_FORMAT_NONE;
> 
> ---
> base-commit: e6a72e9b927165081566252d972ea1cbbee5bf28
> change-id: 20260720-color-format-amdgpu-fix-09a03106c9da
> 
> Best regards,
> --  
> Nicolas Frattaroli <nicolas.frattaroli@xxxxxxxxxxxxx>
>