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: Victor Zhao <Victor.Zhao@xxxxxxx>
---
drivers/gpu/drm/amd/amdgpu/amdgpu_device.c | 3 +++
1 file changed, 3 insertions(+)
diff --git a/drivers/gpu/drm/amd/amdgpu/amdgpu_device.c b/drivers/gpu/drm/amd/amdgpu/amdgpu_device.c
index 383bbee87df5..64622dc57a6b 100644
--- a/drivers/gpu/drm/amd/amdgpu/amdgpu_device.c
+++ b/drivers/gpu/drm/amd/amdgpu/amdgpu_device.c
@@ -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);
--
2.34.1
