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disp: msm: sde: avoid rc lock deadlock during esd failure

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Each mode_set call makes sure that previous frame is triggered
and triggers the esd check if there is pp_timeout. This may
lead to deadlock between crtc commit and event threads. Crtc
commit thread acquires the rc_lock and triggers the flush_thread
API on event_thread. Event thread again tries to acquire the
rc_lock to wait for frame. This can be prevented by avoiding the
pre_kickoff call from esd_failure notification if it is generated
through pp_timeout.

Change-Id: I561fef0345976ab0cae61aab6718214c47fa1393
Signed-off-by: Dhaval Patel <pdhaval@codeaurora.org>
This commit is contained in:
Dhaval Patel
2019-05-17 14:51:12 -07:00
parent 74f328561e
commit 56e88a7fdc
3 changed files with 19 additions and 10 deletions
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5
msm/sde/sde_encoder.h
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@@ -253,9 +253,12 @@ int sde_encoder_update_caps_for_cont_splash(struct drm_encoder *encoder,
*
* TODO: manage the event at sde_kms level for forward processing.
* @drm_enc: Pointer to drm encoder structure
* @skip_pre_kickoff: Caller can avoid pre_kickoff if it is triggering this
* event only to switch the panel TE to watchdog mode.
* @Return: true if successful in updating the encoder structure
*/
int sde_encoder_display_failure_notification(struct drm_encoder *enc);
int sde_encoder_display_failure_notification(struct drm_encoder *enc,
bool skip_pre_kickoff);
/**
* sde_encoder_recovery_events_enabled - checks if client has enabled