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

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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: Aaron Ma <aaron.ma@canonical.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
This commit is contained in:
Aaron Ma 2020-04-03 22:34:19 +08:00 committed by Alex Deucher
parent a45a9e5e10
commit 2a20e630f8
1 changed files with 2 additions and 1 deletions
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3
drivers/gpu/drm/amd/amdgpu/amdgpu_pm.c
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@ -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);