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authorRafael J. Wysocki <rafael.j.wysocki@intel.com>2021-10-22 18:04:02 +0200
committerRafael J. Wysocki <rafael.j.wysocki@intel.com>2021-10-26 15:52:07 +0200
commit8d89835b0467b7e618c1c93603c1aff85a0c3c66 (patch)
tree87d331bf331b6c26f4ff870dd39f730b585402f5 /drivers/base
parentPM: sleep: Do not let "syscore" devices runtime-suspend during system transitions (diff)
downloadlinux-dev-8d89835b0467b7e618c1c93603c1aff85a0c3c66.tar.xz
linux-dev-8d89835b0467b7e618c1c93603c1aff85a0c3c66.zip
PM: suspend: Do not pause cpuidle in the suspend-to-idle path
It is pointless to pause cpuidle in the suspend-to-idle path, because it is going to be resumed in the same path later and pausing it does not serve any particular purpose in that case. Rework the code to avoid doing that. Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com> Reviewed-by: Ulf Hansson <ulf.hansson@linaro.org> Tested-by: Ulf Hansson <ulf.hansson@linaro.org>
Diffstat (limited to 'drivers/base')
-rw-r--r--drivers/base/power/main.c11
1 files changed, 6 insertions, 5 deletions
diff --git a/drivers/base/power/main.c b/drivers/base/power/main.c
index fca6eab871fc..41b2afa3aacc 100644
--- a/drivers/base/power/main.c
+++ b/drivers/base/power/main.c
@@ -747,8 +747,6 @@ void dpm_resume_noirq(pm_message_t state)
resume_device_irqs();
device_wakeup_disarm_wake_irqs();
-
- cpuidle_resume();
}
/**
@@ -881,6 +879,7 @@ void dpm_resume_early(pm_message_t state)
void dpm_resume_start(pm_message_t state)
{
dpm_resume_noirq(state);
+ cpuidle_resume();
dpm_resume_early(state);
}
EXPORT_SYMBOL_GPL(dpm_resume_start);
@@ -1337,8 +1336,6 @@ int dpm_suspend_noirq(pm_message_t state)
{
int ret;
- cpuidle_pause();
-
device_wakeup_arm_wake_irqs();
suspend_device_irqs();
@@ -1522,9 +1519,13 @@ int dpm_suspend_end(pm_message_t state)
if (error)
goto out;
+ cpuidle_pause();
+
error = dpm_suspend_noirq(state);
- if (error)
+ if (error) {
+ cpuidle_resume();
dpm_resume_early(resume_event(state));
+ }
out:
dpm_show_time(starttime, state, error, "end");