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drm/atomic: log when page-flip is requested without CRTCs
author
Simon Ser
<contact@emersion.fr>
Wed, 19 Oct 2022 14:38:16 +0000
(14:38 +0000)
committer
Simon Ser
<contact@emersion.fr>
Fri, 23 Jun 2023 14:34:25 +0000
(16:34 +0200)
Signed-off-by: Simon Ser <contact@emersion.fr>
Reviewed-by: Daniel 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
drivers/gpu/drm/drm_atomic_uapi.c
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diff --git
a/drivers/gpu/drm/drm_atomic_uapi.c
b/drivers/gpu/drm/drm_atomic_uapi.c
index e2373d1cfebcfe0e9970fcc73fb4332231ba9908..e4c46a75af90556a73bd074eb92cf1ffa633ca3e 100644
(file)
--- a/
drivers/gpu/drm/drm_atomic_uapi.c
+++ b/
drivers/gpu/drm/drm_atomic_uapi.c
@@
-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;
}