Ksawlii/kernel_samsung_a53x
1
0
Fork 0
Code Issues Pull requests Projects Releases Packages Wiki Activity Actions

drm/amdgpu: skip amdgpu_device_cache_pci_state under sriov

Browse source 
[ 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>
This commit is contained in:
Victor Zhao 2024-10-24 13:40:39 +08:00 • committed by Ksawlii
parent 028adb1ffe
commit b390441318
1 changed files with 3 additions and 0 deletions
Show stats Download patch file Download diff file Expand all files Collapse all files

3
drivers/gpu/drm/amd/amdgpu/amdgpu_device.c
View file

@ -5088,6 +5088,9 @@ 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);