From: Rex Zhu <Rex.Zhu@amd.com>
Date: Thu, 23 Aug 2018 11:46:13 +0800
Subject: drm/amdgpu: Remove duplicated power source update
Git-commit: 2f4e7db0f7456d8312de88d321b889dbd10c18fd
Patch-mainline: v4.19-rc2
References: FATE#326289 FATE#326079 FATE#326049 FATE#322398 FATE#326166

when ac/dc switch, driver will be notified by acpi event.
then the power source will be updated. so don't need to
get power source when set power state.

Reviewed-by: Alex Deucher <alexander.deucher@amd.com>
Signed-off-by: Rex Zhu <Rex.Zhu@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
Acked-by: Petr Tesarik <ptesarik@suse.com>
---
 drivers/gpu/drm/amd/amdgpu/amdgpu_pm.c |    8 --------
 1 file changed, 8 deletions(-)

--- a/drivers/gpu/drm/amd/amdgpu/amdgpu_pm.c
+++ b/drivers/gpu/drm/amd/amdgpu/amdgpu_pm.c
@@ -1901,14 +1901,6 @@ void amdgpu_pm_compute_clocks(struct amd
 			amdgpu_fence_wait_empty(ring);
 	}
 
-	mutex_lock(&adev->pm.mutex);
-	/* update battery/ac status */
-	if (power_supply_is_system_supplied() > 0)
-		adev->pm.ac_power = true;
-	else
-		adev->pm.ac_power = false;
-	mutex_unlock(&adev->pm.mutex);
-
 	if (adev->powerplay.pp_funcs->dispatch_tasks) {
 		if (!amdgpu_device_has_dc_support(adev)) {
 			mutex_lock(&adev->pm.mutex);