From: Gerd Hoffmann Date: Wed, 19 Dec 2018 12:27:00 +0000 (+0100) Subject: drm/virtio: fix pageflip flush X-Git-Url: http://git.lede-project.org./?a=commitdiff_plain;h=6a01d277ac611663e8e810177b50d16aa6c2a915;p=openwrt%2Fstaging%2Fblogic.git drm/virtio: fix pageflip flush Sending the flush command only makes sense if we actually have a framebuffer attached to the scanout (handle != 0). Signed-off-by: Gerd Hoffmann Reviewed-by: Ezequiel Garcia Link: http://patchwork.freedesktop.org/patch/msgid/20181219122708.4586-3-kraxel@redhat.com --- diff --git a/drivers/gpu/drm/virtio/virtgpu_plane.c b/drivers/gpu/drm/virtio/virtgpu_plane.c index ead5c53d4e21..548265b8e82d 100644 --- a/drivers/gpu/drm/virtio/virtgpu_plane.c +++ b/drivers/gpu/drm/virtio/virtgpu_plane.c @@ -130,11 +130,12 @@ static void virtio_gpu_primary_plane_update(struct drm_plane *plane, plane->state->src_h >> 16, plane->state->src_x >> 16, plane->state->src_y >> 16); - virtio_gpu_cmd_resource_flush(vgdev, handle, - plane->state->src_x >> 16, - plane->state->src_y >> 16, - plane->state->src_w >> 16, - plane->state->src_h >> 16); + if (handle) + virtio_gpu_cmd_resource_flush(vgdev, handle, + plane->state->src_x >> 16, + plane->state->src_y >> 16, + plane->state->src_w >> 16, + plane->state->src_h >> 16); } static int virtio_gpu_cursor_prepare_fb(struct drm_plane *plane,