[PATCH] drm/amdgpu: Fix some unload driver issues

[Christian König]

Am 05.03.21 um 10:04 schrieb Emily Deng:
> If have memory leak, maybe it will have issue in
> ttm_bo_force_list_clean-> ttm_mem_evict_first.
>
> Set adev->gart.ptr to null to avoid to call
> amdgpu_gmc_set_pte_pde to cause ptr issue pointer when
> calling amdgpu_gart_unbind in amdgpu_bo_fini which is after gart_fini.
>
> Signed-off-by: Emily Deng <Emily.Deng at amd.com>

Reviewed-by: Christian König <christian.koenig at amd.com>

> ---
>   drivers/gpu/drm/amd/amdgpu/amdgpu_gart.c | 1 +
>   1 file changed, 1 insertion(+)
>
> diff --git a/drivers/gpu/drm/amd/amdgpu/amdgpu_gart.c b/drivers/gpu/drm/amd/amdgpu/amdgpu_gart.c
> index 23823a57374f..f1ede4b43d07 100644
> --- a/drivers/gpu/drm/amd/amdgpu/amdgpu_gart.c
> +++ b/drivers/gpu/drm/amd/amdgpu/amdgpu_gart.c
> @@ -202,6 +202,7 @@ void amdgpu_gart_table_vram_free(struct amdgpu_device *adev)
>   		return;
>   	}
>   	amdgpu_bo_unref(&adev->gart.bo);
> +	adev->gart.ptr = NULL;
>   }
>   
>   /*