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drm/amdgpu: Fix driver reloading failure

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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 <Xiangliang.Yu@amd.com>
Acked-by: Alex Deucher <alexander.deucher@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
This commit is contained in:
Xiangliang.Yu 2017-09-21 10:19:49 +08:00 committed by Alex Deucher
parent 6042e8560e
commit fd4495e57c
1 changed files with 2 additions and 0 deletions
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2
drivers/gpu/drm/amd/amdgpu/amdgpu_drv.c
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@ -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