From 9bd9befb4cc382c896432d7764367ef1cdf62352 Mon Sep 17 00:00:00 2001
From: Melissa Wen <mwen@igalia.com>
Date: Tue, 12 Jul 2022 10:32:39 -0100
Subject: [PATCH] drm/amd/display: correct check of coverage blend mode
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@intel.com>
Reported-by: Dan Carpenter <dan.carpenter@oracle.com>
Reviewed-by: Harry Wentland <harry.wentland@amd.com>
Signed-off-by: Melissa Wen <mwen@igalia.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
---
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 e203d75834dec..35631a33cd8a8 100644
--- a/drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm.c
+++ b/drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm.c
@@ -5537,7 +5537,7 @@ 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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