Commit 98f51854 authored by Simon Ser's avatar Simon Ser
Browse files

drm/atomic: log when page-flip is requested without CRTCs 



Signed-off-by: default avatarSimon Ser <contact@emersion.fr>
Reviewed-by: default avatarDaniel Vetter <daniel.vetter@ffwll.ch>
Cc: Jani Nikula <jani.nikula@intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20221019143736.267324-6-contact@emersion.fr
parent d43b3cdc

drivers/gpu/drm/drm_atomic_uapi.c

+3 −1
Original line number Diff line number Diff line
@@ -1265,8 +1265,10 @@ static int prepare_signaling(struct drm_device *dev, 
	 * Having this flag means user mode pends on event which will never

	 * reach due to lack of at least one CRTC for signaling

	 */

	if (c == 0 && (arg->flags & DRM_MODE_PAGE_FLIP_EVENT))

	if (c == 0 && (arg->flags & DRM_MODE_PAGE_FLIP_EVENT)) {

		drm_dbg_atomic(dev, "need at least one CRTC for DRM_MODE_PAGE_FLIP_EVENT");

		return -EINVAL;

	}



	return 0;

}