Commit 2a20e630 authored by Aaron Ma's avatar Aaron Ma Committed by Alex Deucher
Browse files

drm/amdgpu: Fix oops when pp_funcs is unset in ACPI event 



On ARCTURUS and RENOIR, powerplay is not supported yet.
When plug in or unplug power jack, ACPI event will issue.
Then kernel NULL pointer BUG will be triggered.
Check for NULL pointers before calling.

Signed-off-by: default avatarAaron Ma <aaron.ma@canonical.com>
Signed-off-by: default avatarAlex Deucher <alexander.deucher@amd.com>
parent a45a9e5e

drivers/gpu/drm/amd/amdgpu/amdgpu_pm.c

+2 −1
Original line number Diff line number Diff line
@@ -89,7 +89,8 @@ void amdgpu_pm_acpi_event_handler(struct amdgpu_device *adev) 
			adev->pm.ac_power = true;

		else

			adev->pm.ac_power = false;

		if (adev->powerplay.pp_funcs->enable_bapm)

		if (adev->powerplay.pp_funcs &&

		    adev->powerplay.pp_funcs->enable_bapm)

			amdgpu_dpm_enable_bapm(adev, adev->pm.ac_power);

		mutex_unlock(&adev->pm.mutex);