drm/virtio: add plane check (a02c4c25) · Commits · 戴 / test

Use drm_atomic_helper_check_plane_state() to sanity check the plane state. Signed-off-by:

drivers/gpu/drm/virtio/virtgpu_plane.c

+16 −1

Original line number	Diff line number	Diff line
		@@ -84,7 +84,22 @@ static const struct drm_plane_funcs virtio_gpu_plane_funcs = {
		static int virtio_gpu_plane_atomic_check(struct drm_plane *plane,
		struct drm_plane_state *state)
		{
		bool is_cursor = plane->type == DRM_PLANE_TYPE_CURSOR;
		struct drm_crtc_state *crtc_state;
		int ret;

		if (!state->fb \|\| !state->crtc)
		return 0;

		crtc_state = drm_atomic_get_crtc_state(state->state, state->crtc);
		if (IS_ERR(crtc_state))
		return PTR_ERR(crtc_state);

		ret = drm_atomic_helper_check_plane_state(state, crtc_state,
		DRM_PLANE_HELPER_NO_SCALING,
		DRM_PLANE_HELPER_NO_SCALING,
		is_cursor, true);
		return ret;
		}

		static void virtio_gpu_primary_plane_update(struct drm_plane *plane,