From: Victor Zhao Date: Thu, 24 Oct 2024 05:40:39 +0000 (+0800) Subject: drm/amdgpu: skip amdgpu_device_cache_pci_state under sriov X-Git-Tag: microblaze-v6.16~490^2~9^2~18 X-Git-Url: http://git.monstr.eu/?a=commitdiff_plain;h=afe260df55ac280cd56306248cb6d8a6b0db095c;p=linux-2.6-microblaze.git 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: Victor Zhao Acked-by: Lijo Lazar Signed-off-by: Alex Deucher --- diff --git a/drivers/gpu/drm/amd/amdgpu/amdgpu_device.c b/drivers/gpu/drm/amd/amdgpu/amdgpu_device.c index a7b55d6ac5c6..d97417c4c8e8 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);