[PATCH] drm/amdgpu/sriov: reject kms open if TDR not finished or failed

[Michel Dänzer]

On 2018-04-25 08:39 AM, Emily Deng wrote:
> Signed-off-by: Monk Liu <Monk.Liu at amd.com>
> ---
>  drivers/gpu/drm/amd/amdgpu/amdgpu_kms.c | 3 +++
>  1 file changed, 3 insertions(+)
> 
> diff --git a/drivers/gpu/drm/amd/amdgpu/amdgpu_kms.c b/drivers/gpu/drm/amd/amdgpu/amdgpu_kms.c
> index 6d55cae..adeca71 100644
> --- a/drivers/gpu/drm/amd/amdgpu/amdgpu_kms.c
> +++ b/drivers/gpu/drm/amd/amdgpu/amdgpu_kms.c
> @@ -847,6 +847,9 @@ int amdgpu_driver_open_kms(struct drm_device *dev, struct drm_file *file_priv)
>  	struct amdgpu_fpriv *fpriv;
>  	int r, pasid;
>  
> +	if (adev->in_gpu_reset)
> +		return -ECANCELED;

This seems like a bad idea, as it would cause basically any userspace
which wants to use the GPU to fail to start during a GPU reset.


-- 
Earthling Michel Dänzer               |               http://www.amd.com
Libre software enthusiast             |             Mesa and X developer