Commit afe260df authored by Victor Zhao's avatar Victor Zhao Committed by Alex Deucher
Browse files

drm/amdgpu: skip amdgpu_device_cache_pci_state under sriov 



Under sriov, host driver will save and restore vf pci cfg space during
reset. And during device init, under sriov, pci_restore_state happens after
fullaccess released, and it can have race condition with mmio protection
enable from host side leading to missing interrupts.

So skip amdgpu_device_cache_pci_state for sriov.

Signed-off-by: default avatarVictor Zhao <Victor.Zhao@amd.com>
Acked-by: default avatarLijo Lazar <lijo.lazar@amd.com>
Signed-off-by: default avatarAlex Deucher <alexander.deucher@amd.com>
parent 922f0e00

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

+3 −0
Original line number Diff line number Diff line
@@ -6451,6 +6451,9 @@ bool amdgpu_device_cache_pci_state(struct pci_dev *pdev) 
	struct amdgpu_device *adev = drm_to_adev(dev);

	int r;



	if (amdgpu_sriov_vf(adev))

		return false;



	r = pci_save_state(pdev);

	if (!r) {

		kfree(adev->pci_state);