drm/amdgpu/acpi: skip backlight events for DC

No change in behavior, just bail sooner.

Reviewed-by: Jim Qu <Jim.Qu@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>

1 files changed, 3 insertions, 1 deletions

diff --git a/drivers/gpu/drm/amd/amdgpu/amdgpu_acpi.c b/drivers/gpu/drm/amd/amdgpu/amdgpu_acpi.c
index 455617813ec4..353993218f21 100644
--- a/drivers/gpu/drm/amd/amdgpu/amdgpu_acpi.c
+++ b/drivers/gpu/drm/amd/amdgpu/amdgpu_acpi.c
@@ -389,7 +389,9 @@ static int amdgpu_atif_handler(struct amdgpu_device *adev,
 
                 DRM_DEBUG_DRIVER("ATIF: %d pending SBIOS requests\n", count);
 
-                if (req.pending & ATIF_PANEL_BRIGHTNESS_CHANGE_REQUEST) {
+                /* todo: add DC handling */
+                if ((req.pending & ATIF_PANEL_BRIGHTNESS_CHANGE_REQUEST) &&
+                    !amdgpu_device_has_dc_support(adev)) {
                         struct amdgpu_encoder *enc = atif->encoder_for_bl;
 
                         if (enc) {