Since we only support pre-multiplied alpha blend mode, advertise that, otherwise validate_blend_mode_for_alpha_formats() will throw a WARN.
Reported-by: [email protected] Signed-off-by: Michail Tatas <[email protected]> --- syzbot link: https://syzkaller.appspot.com/bug?extid=6245cb95ae707991bffa drivers/gpu/drm/vkms/vkms_plane.c | 6 ++++++ 1 file changed, 6 insertions(+) diff --git a/drivers/gpu/drm/vkms/vkms_plane.c b/drivers/gpu/drm/vkms/vkms_plane.c index 68cb2a3335e6..a2e5ebee729a 100644 --- a/drivers/gpu/drm/vkms/vkms_plane.c +++ b/drivers/gpu/drm/vkms/vkms_plane.c @@ -246,6 +246,12 @@ struct vkms_plane *vkms_plane_init(struct vkms_device *vkmsdev, DRM_COLOR_YCBCR_BT601, DRM_COLOR_YCBCR_FULL_RANGE); + /* Since our composer only supports pre-multiplied alpha, + * advertise only the PREMULTI blend mode. + */ + drm_plane_create_blend_mode_property(&plane->base, + BIT(DRM_MODE_BLEND_PREMULTI)); + if (vkms_config_plane_get_default_pipeline(plane_cfg)) vkms_initialize_colorops(&plane->base); -- 2.43.0
