Commit 2577d176 authored Dec 21, 2015 by Dhaval Patel

msm: mdss: remove clk off scheduling when commit pending



There can be race condition possible between Early touch
event thread and kickoff thread. For ex:
 -> Eary touch event: Turns on clock and schedule the off
    after 4 vsync cycle.
 -> Kickoff thread: Leaves the clock on
 -> Second touch event: Reschedule the clock off workque

The second touch event call scheduling the clock off
after 4 vsync cycle. On loaded system, kickoff thread
might get intruppted and get chance to rerun after
4 vysnc cycle. The clocks will be turned off for such
use cases before PP done ISR.

Change-Id: I85923146645379be1e3ccc578fc795306cd987ad
Signed-off-by: Dhaval Patel <pdhaval@codeaurora.org>

parent e7b7253a

drivers/video/msm/mdss/mdss_mdp_intf_cmd.c

+4 −1

Original line number	Diff line number	Diff line
		@@ -861,8 +861,11 @@ int mdss_mdp_resource_control(struct mdss_mdp_ctl *ctl, u32 sw_event)
		* 1. Early wakeup cancelled the gate work.
		* 2. Early wakeup cancelled the off work.
		* 3. Early wakeup changed the state to ON.
		*
		* Driver will not allow off work under one condition:
		* 1. Kickoff is pending.
		*/
		if (schedule_off) {
		if (schedule_off && !ctl->mfd->validate_pending) {
		/*
		* Schedule off work after cmd mode idle timeout is
		* reached. This is to prevent the case where early wake