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Date: Mon, 27 May 2019 13:14:47 +0200 From: Gerd Hoffmann <kraxel@...hat.com> To: dri-devel@...ts.freedesktop.org Cc: Gerd Hoffmann <kraxel@...hat.com>, David Airlie <airlied@...ux.ie>, Daniel Vetter <daniel@...ll.ch>, virtualization@...ts.linux-foundation.org (open list:VIRTIO GPU DRIVER), linux-kernel@...r.kernel.org (open list) Subject: [PATCH] drm/virtio: add plane check Use drm_atomic_helper_check_plane_state() to sanity check the plane state. Signed-off-by: Gerd Hoffmann <kraxel@...hat.com> --- drivers/gpu/drm/virtio/virtgpu_plane.c | 17 ++++++++++++++++- 1 file changed, 16 insertions(+), 1 deletion(-) diff --git a/drivers/gpu/drm/virtio/virtgpu_plane.c b/drivers/gpu/drm/virtio/virtgpu_plane.c index 024c2aa0c929..3b377bb5b5cb 100644 --- a/drivers/gpu/drm/virtio/virtgpu_plane.c +++ b/drivers/gpu/drm/virtio/virtgpu_plane.c @@ -82,7 +82,22 @@ 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) { - return 0; + 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, -- 2.18.1
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