[PATCH] drm/amdgpu: disable DRIVER_ATOMIC under SRIOV

[Alex Deucher]

Acked-by: Alex Deucher <alexander.deucher at amd.com>

On Tue, Apr 16, 2019 at 2:09 AM Yintian Tao <yttao at amd.com> wrote:
>
> Under SRIOV, we need disable DRIVER_ATOMIC.
> Otherwise, it will trigger WARN_ON at drm_universal_plane_init.
>
> Change-Id: I96a78d6e45b3a67ab9b9534e7071ae5daacc0f4f
> Signed-off-by: Yintian Tao <yttao at amd.com>
> ---
>  drivers/gpu/drm/amd/amdgpu/amdgpu_virt.c | 1 +
>  1 file changed, 1 insertion(+)
>
> diff --git a/drivers/gpu/drm/amd/amdgpu/amdgpu_virt.c b/drivers/gpu/drm/amd/amdgpu/amdgpu_virt.c
> index 7e7f9ed..7d484fa 100644
> --- a/drivers/gpu/drm/amd/amdgpu/amdgpu_virt.c
> +++ b/drivers/gpu/drm/amd/amdgpu/amdgpu_virt.c
> @@ -36,6 +36,7 @@ void amdgpu_virt_init_setting(struct amdgpu_device *adev)
>         /* enable virtual display */
>         adev->mode_info.num_crtc = 1;
>         adev->enable_virtual_display = true;
> +       adev->ddev->driver->driver_features &= ~DRIVER_ATOMIC;
>         adev->cg_flags = 0;
>         adev->pg_flags = 0;
>  }
> --
> 2.7.4
>
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