samsung-sm8650/android_kernel_samsung_sm8650-modules
1
0
Fork 0
Code Issues Pull Requests Actions Packages Projects Releases Wiki Activity

disp: msm: sde: avoid mutex lock for crtc flush event thread

Browse Source 
As per current design in crtc disable sequence event thread
can cause deadlock.This change avoids mutex lock for crtc
flush event thread to flush all event work.


Change-Id: Ia7156032bee9245fe84fd1621cf1994920b8e574
Signed-off-by: Narendra Muppalla <NarendraM@codeaurora.org>
This commit is contained in:
Narendra Muppalla
2020-10-13 13:09:56 -07:00
parent 59571e81dc
commit 47261ce97c
1 changed files with 6 additions and 1 deletions
Download Patch File Download Diff File Expand all files Collapse all files

7
msm/sde/sde_crtc.c
View File

@@ -4162,7 +4162,12 @@ static void sde_crtc_disable(struct drm_crtc *crtc)
msm_mode_object_event_notify(&crtc->base, crtc->dev, &event,
(u8 *)&power_on);
_sde_crtc_flush_event_thread(crtc);
if (atomic_read(&sde_crtc->frame_pending)) {
mutex_unlock(&sde_crtc->crtc_lock);
_sde_crtc_flush_event_thread(crtc);
mutex_lock(&sde_crtc->crtc_lock);
}
kthread_cancel_delayed_work_sync(&sde_crtc->static_cache_read_work);
kthread_cancel_delayed_work_sync(&sde_crtc->idle_notify_work);