Acked-by: Nirmoy Das <nirmoy.das@xxxxxxx>
On 6/9/20 11:20 AM, Liu ChengZhe wrote:
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@xxxxxxx>
---
drivers/gpu/drm/amd/amdgpu/amdgpu_drv.c | 4 +++-
1 file changed, 3 insertions(+), 1 deletion(-)
diff --git a/drivers/gpu/drm/amd/amdgpu/amdgpu_drv.c b/drivers/gpu/drm/amd/amdgpu/amdgpu_drv.c
index 667aad1f15c0..9c81a3d0b546 100644
--- a/drivers/gpu/drm/amd/amdgpu/amdgpu_drv.c
+++ b/drivers/gpu/drm/amd/amdgpu/amdgpu_drv.c
@@ -1165,7 +1165,9 @@ 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);
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