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From a2b4e24d7f9bb69d165395e4d367608d6acb765b Mon Sep 17 00:00:00 2001
From: Alex Deucher <alexander.deucher@amd.com>
Date: Thu, 19 Jul 2018 09:28:23 -0500
Subject: [PATCH 4989/5725] 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>
---
drivers/gpu/drm/amd/amdgpu/amdgpu_acpi.c | 4 +++-
1 file changed, 3 insertions(+), 1 deletion(-)
diff --git a/drivers/gpu/drm/amd/amdgpu/amdgpu_acpi.c b/drivers/gpu/drm/amd/amdgpu/amdgpu_acpi.c
index 4556178..3539932 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) {
--
2.7.4
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