joy/android_kernel_sony_sdm845
Watch
1
Fork
You've already forked android_kernel_sony_sdm845
 0
Code Issues Pull requests Projects Releases Wiki Activity

drivers: lpm-levels: Use cpu_do_idle for shallower LPM entry

Browse source 
dsb should be invoked before wfi instruction without which
core can get stuck or do not respond to IPIs. Use cpu_do_idle
that invokes both dsb and wfi instructions for shallower mode
entry.

Change-Id: I2e9d2317048781590a626a0b3d93f23bbf9eb496
Signed-off-by: Raghavendra Kakarla <rkakarla@codeaurora.org>
This commit is contained in:
Raghavendra Kakarla 2020-01-09 19:09:13 +05:30
commit b26d5d9ad7
1 changed files with 2 additions and 2 deletions
Download patch file Download diff file Expand all files Collapse all files

4
drivers/cpuidle/lpm-levels.c
View file

@ -1,4 +1,4 @@
/* Copyright (c) 2012-2018, The Linux Foundation. All rights reserved.
/* Copyright (c) 2012-2020, The Linux Foundation. All rights reserved.
* Copyright (C) 2006-2007 Adam Belay <abelay@novell.com>
* Copyright (C) 2009 Intel Corporation
*
@ -1314,7 +1314,7 @@ static bool psci_enter_sleep(struct lpm_cpu *cpu, int idx, bool from_idle)
if (!idx) {
stop_critical_timings();
wfi();
cpu_do_idle();
start_critical_timings();
return 1;
}