drm/amdgpu: skip amdgpu_device_cache_pci_state under sriov

BugLink: https://bugs.launchpad.net/bugs/2102118

[ Upstream commit afe260df55ac280cd56306248cb6d8a6b0db095c ]

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@amd.com>
Acked-by: Lijo Lazar <lijo.lazar@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
Signed-off-by: Sasha Levin <sashal@kernel.org>
Signed-off-by: Koichiro Den <koichiro.den@canonical.com>
Signed-off-by: Stefan Bader <stefan.bader@canonical.com>

This commit is contained in:

Victor Zhao

2025-03-12 22:51:00 +09:00

committed by

Stefan Bader

parent 70dcb92d26

commit d1a5ef3368

1 changed files with 3 additions and 0 deletions

									
										drivers/gpu/drm/amd/amdgpu/amdgpu_device.c
									
		+3
		
												View File
												
				@@ -6235,6 +6235,9 @@ 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);