Re: [PATCH] drm/amd/display: correct check of coverage blend mode

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On 2022-07-12 07:32, Melissa Wen wrote:
> Check the value of per_pixel_alpha to decide whether the Coverage pixel
> blend mode is applicable or not.
> 
> Fixes: 76818cdd11a2 ("drm/amd/display: add Coverage blend mode for overlay plane")
> Reported-by: kernel test robot <lkp@xxxxxxxxx>
> Reported-by: Dan Carpenter <dan.carpenter@xxxxxxxxxx>
> Signed-off-by: Melissa Wen <mwen@xxxxxxxxxx>

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

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 de1c139ae279..25cb833b267c 100644
> --- a/drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm.c
> +++ b/drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm.c
> @@ -5486,7 +5486,7 @@ fill_blending_from_plane_state(const struct drm_plane_state *plane_state,
>  			}
>  		}
>  
> -		if (per_pixel_alpha && plane_state->pixel_blend_mode == DRM_MODE_BLEND_COVERAGE)
> +		if (*per_pixel_alpha && plane_state->pixel_blend_mode == DRM_MODE_BLEND_COVERAGE)
>  			*pre_multiplied_alpha = false;
>  	}
>  




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