drm/amdgpu: only check for _PR3 on dGPUs

commit 85ac2021fe3ace59cc0afd6edf005abad35625b0 upstream.

We don't support runtime pm on APUs.  They support more
dynamic power savings using clock and powergating.

Reviewed-by: Mario Limonciello <mario.limonciello@amd.com>
Tested-by: Mario Limonciello <mario.limonciello@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

diff --git a/drivers/gpu/drm/amd/amdgpu/amdgpu_device.c b/drivers/gpu/drm/amd/amdgpu/amdgpu_device.c
index 15054800c8a0899cfd72c3f7503fe56360c284e3..f18c698137a6b531005ef75e0201c74553c9a268 100644 (file)
--- a/drivers/gpu/drm/amd/amdgpu/amdgpu_device.c
+++ b/drivers/gpu/drm/amd/amdgpu/amdgpu_device.c
@@ -2147,8 +2147,10 @@ static int amdgpu_device_ip_early_init(struct amdgpu_device *adev)
            !pci_is_thunderbolt_attached(to_pci_dev(dev->dev)))
                adev->flags |= AMD_IS_PX;
 
-       parent = pci_upstream_bridge(adev->pdev);
-       adev->has_pr3 = parent ? pci_pr3_present(parent) : false;
+       if (!(adev->flags & AMD_IS_APU)) {
+               parent = pci_upstream_bridge(adev->pdev);
+               adev->has_pr3 = parent ? pci_pr3_present(parent) : false;
+       }
 
        amdgpu_amdkfd_device_probe(adev);