From: Xiangliang.Yu Date: Thu, 21 Sep 2017 02:19:49 +0000 (+0800) Subject: drm/amdgpu: Fix driver reloading failure X-Git-Tag: v5.15~9960^2~28^2~30 X-Git-Url: https://git.proxmox.com/?a=commitdiff_plain;h=fd4495e57cd2594098493a0e5b6beccae8cbf47b;p=mirror_ubuntu-kernels.git drm/amdgpu: Fix driver reloading failure SRIOV doesn't implement PMC capability of PCIe, so it can't update power state by reading PMC register. Currently, amdgpu driver doesn't disable pci device when removing driver, the enable_cnt of pci device will not be decrease to 0. When reloading driver, pci_enable_device will do nothing as enable_cnt is not zero. And power state will not be updated as PMC is not support. So current_state of pci device is not D0 state and pci_enable_msi return fail. Add pci_disable_device when remmoving driver to fix the issue. Signed-off-by: Xiangliang.Yu Acked-by: Alex Deucher Signed-off-by: Alex Deucher --- diff --git a/drivers/gpu/drm/amd/amdgpu/amdgpu_drv.c b/drivers/gpu/drm/amd/amdgpu/amdgpu_drv.c index dee35a9c5723..91e42b60d66b 100644 --- a/drivers/gpu/drm/amd/amdgpu/amdgpu_drv.c +++ b/drivers/gpu/drm/amd/amdgpu/amdgpu_drv.c @@ -609,6 +609,8 @@ amdgpu_pci_remove(struct pci_dev *pdev) drm_dev_unregister(dev); drm_dev_unref(dev); + pci_disable_device(pdev); + pci_set_drvdata(pdev, NULL); } static void