From: Alex Deucher <alexander.deucher@xxxxxxx> 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@xxxxxxx> Tested-by: Mario Limonciello <mario.limonciello@xxxxxxx> Signed-off-by: Alex Deucher <alexander.deucher@xxxxxxx> Signed-off-by: Greg Kroah-Hartman <gregkh@xxxxxxxxxxxxxxxxxxx> --- drivers/gpu/drm/amd/amdgpu/amdgpu_device.c | 6 ++++-- 1 file changed, 4 insertions(+), 2 deletions(-) --- a/drivers/gpu/drm/amd/amdgpu/amdgpu_device.c +++ b/drivers/gpu/drm/amd/amdgpu/amdgpu_device.c @@ -2178,8 +2178,10 @@ static int amdgpu_device_ip_early_init(s !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); Patches currently in stable-queue which might be from alexander.deucher@xxxxxxx are queue-5.15/drm-amdgpu-move-px-checking-into-amdgpu_device_ip_early_init.patch queue-5.15/drm-amdgpu-only-check-for-_pr3-on-dgpus.patch