diff options
Diffstat (limited to 'drivers/gpu/drm/drm_vblank_work.c')
| -rw-r--r-- | drivers/gpu/drm/drm_vblank_work.c | 22 |
1 files changed, 22 insertions, 0 deletions
diff --git a/drivers/gpu/drm/drm_vblank_work.c b/drivers/gpu/drm/drm_vblank_work.c index 4fe9b1d3b00f..1752ffb44e1d 100644 --- a/drivers/gpu/drm/drm_vblank_work.c +++ b/drivers/gpu/drm/drm_vblank_work.c @@ -233,6 +233,28 @@ void drm_vblank_work_flush(struct drm_vblank_work *work) EXPORT_SYMBOL(drm_vblank_work_flush); /** + * drm_vblank_work_flush_all - flush all currently pending vblank work on crtc. + * @crtc: crtc for which vblank work to flush + * + * Wait until all currently queued vblank work on @crtc + * has finished executing once. + */ +void drm_vblank_work_flush_all(struct drm_crtc *crtc) +{ + struct drm_device *dev = crtc->dev; + struct drm_vblank_crtc *vblank = &dev->vblank[drm_crtc_index(crtc)]; + + spin_lock_irq(&dev->event_lock); + wait_event_lock_irq(vblank->work_wait_queue, + list_empty(&vblank->pending_work), + dev->event_lock); + spin_unlock_irq(&dev->event_lock); + + kthread_flush_worker(vblank->worker); +} +EXPORT_SYMBOL(drm_vblank_work_flush_all); + +/** * drm_vblank_work_init - initialize a vblank work item * @work: vblank work item * @crtc: CRTC whose vblank will trigger the work execution |