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drm/amdgpu/cik: don't mess with aspm if gpu is root bus

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Pcie registers may not be available in a virtualized
environment.

Reviewed-by: monk liu <monk.liu@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
This commit is contained in:
Alex Deucher 2016-02-04 10:33:59 -05:00
parent cd474ba0d6
commit 76ecb2c75b
1 changed files with 3 additions and 0 deletions
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3
drivers/gpu/drm/amd/amdgpu/cik.c
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@ -1762,6 +1762,9 @@ static void cik_program_aspm(struct amdgpu_device *adev)
if (amdgpu_aspm == 0)
return;
if (pci_is_root_bus(adev->pdev->bus))
return;
/* XXX double check APUs */
if (adev->flags & AMD_IS_APU)
return;