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drm/amd/amdgpu: handle return value of amdgpu_driver_load_kms

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if guest driver failed to enter full GPU access, amdgpu_driver_load_kms
will unload kms and free dev->dev_private, drm_dev_register would access
null pointer. Driver will enter an error state and can't be unloaded.

Signed-off-by: Liu ChengZhe <ChengZhe.Liu@amd.com>
Reviewed-by: Madhav Chauhan <madhav.chauhan@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
This commit is contained in:
Liu ChengZhe 2020-06-09 16:44:43 +08:00 committed by Alex Deucher
parent 10eafd3e56
commit 7504d3bbec
1 changed files with 3 additions and 1 deletions
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4
drivers/gpu/drm/amd/amdgpu/amdgpu_drv.c
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@ -1111,7 +1111,9 @@ static int amdgpu_pci_probe(struct pci_dev *pdev,
pci_set_drvdata(pdev, dev);
amdgpu_driver_load_kms(dev, ent->driver_data);
ret = amdgpu_driver_load_kms(dev, ent->driver_data);
if (ret)
goto err_pci;
retry_init:
ret = drm_dev_register(dev, ent->driver_data);