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authorLinus Torvalds <torvalds@linux-foundation.org>2016-11-11 16:54:23 -0800
committerLinus Torvalds <torvalds@linux-foundation.org>2016-11-11 16:54:23 -0800
commitb9f659b810c1f98298f9e756e49920d641a1fd95 (patch)
treed77f5c63df7f506208be2de4e08474797534de10
parente6251f009bc27ea2c774aefde5dca6b5d2142df4 (diff)
parentcd16f3dcdb1817956277fbeee0746ae1eb4f851a (diff)
downloadlinux-sh-b9f659b810c1f98298f9e756e49920d641a1fd95.tar.gz
Merge tag 'pm-4.9-rc5' of git://git.kernel.org/pub/scm/linux/kernel/git/rafael/linux-pm
Pull power management fixes from Rafael Wysocki: "These fix two bugs in error code paths in the PM core (system-wide suspend of devices), a device reference leak in the boot-time suspend test code and a cpupower utility regression from the 4.7 cycle. Specifics: - Prevent the PM core from attempting to suspend parent devices if any of their children, whose suspend callbacks were invoked asynchronously, have failed to suspend during the "late" and "noirq" phases of system-wide suspend of devices (Brian Norris). - Prevent the boot-time system suspend test code from leaking a reference to the RTC device used by it (Johan Hovold). - Fix cpupower to use the return value of one of its library functions correctly and restore the correct behavior of it when used for setting cpufreq tunables broken during the 4.7 development cycle (Laura Abbott)" * tag 'pm-4.9-rc5' of git://git.kernel.org/pub/scm/linux/kernel/git/rafael/linux-pm: PM / sleep: don't suspend parent when async child suspend_{noirq, late} fails PM / sleep: fix device reference leak in test_suspend cpupower: Correct return type of cpu_power_is_cpu_online() in cpufreq-set
-rw-r--r--drivers/base/power/main.c8
-rw-r--r--kernel/power/suspend_test.c4
-rw-r--r--tools/power/cpupower/utils/cpufreq-set.c7
3 files changed, 9 insertions, 10 deletions
diff --git a/drivers/base/power/main.c b/drivers/base/power/main.c
index e44944f4be77..2932a5bd892f 100644
--- a/drivers/base/power/main.c
+++ b/drivers/base/power/main.c
@@ -1027,6 +1027,8 @@ static int __device_suspend_noirq(struct device *dev, pm_message_t state, bool a
TRACE_DEVICE(dev);
TRACE_SUSPEND(0);
+ dpm_wait_for_children(dev, async);
+
if (async_error)
goto Complete;
@@ -1038,8 +1040,6 @@ static int __device_suspend_noirq(struct device *dev, pm_message_t state, bool a
if (dev->power.syscore || dev->power.direct_complete)
goto Complete;
- dpm_wait_for_children(dev, async);
-
if (dev->pm_domain) {
info = "noirq power domain ";
callback = pm_noirq_op(&dev->pm_domain->ops, state);
@@ -1174,6 +1174,8 @@ static int __device_suspend_late(struct device *dev, pm_message_t state, bool as
__pm_runtime_disable(dev, false);
+ dpm_wait_for_children(dev, async);
+
if (async_error)
goto Complete;
@@ -1185,8 +1187,6 @@ static int __device_suspend_late(struct device *dev, pm_message_t state, bool as
if (dev->power.syscore || dev->power.direct_complete)
goto Complete;
- dpm_wait_for_children(dev, async);
-
if (dev->pm_domain) {
info = "late power domain ";
callback = pm_late_early_op(&dev->pm_domain->ops, state);
diff --git a/kernel/power/suspend_test.c b/kernel/power/suspend_test.c
index 084452e34a12..bdff5ed57f10 100644
--- a/kernel/power/suspend_test.c
+++ b/kernel/power/suspend_test.c
@@ -203,8 +203,10 @@ static int __init test_suspend(void)
/* RTCs have initialized by now too ... can we use one? */
dev = class_find_device(rtc_class, NULL, NULL, has_wakealarm);
- if (dev)
+ if (dev) {
rtc = rtc_class_open(dev_name(dev));
+ put_device(dev);
+ }
if (!rtc) {
printk(warn_no_rtc);
return 0;
diff --git a/tools/power/cpupower/utils/cpufreq-set.c b/tools/power/cpupower/utils/cpufreq-set.c
index b4bf76971dc9..1eef0aed6423 100644
--- a/tools/power/cpupower/utils/cpufreq-set.c
+++ b/tools/power/cpupower/utils/cpufreq-set.c
@@ -296,7 +296,7 @@ int cmd_freq_set(int argc, char **argv)
struct cpufreq_affected_cpus *cpus;
if (!bitmask_isbitset(cpus_chosen, cpu) ||
- cpupower_is_cpu_online(cpu))
+ cpupower_is_cpu_online(cpu) != 1)
continue;
cpus = cpufreq_get_related_cpus(cpu);
@@ -316,10 +316,7 @@ int cmd_freq_set(int argc, char **argv)
cpu <= bitmask_last(cpus_chosen); cpu++) {
if (!bitmask_isbitset(cpus_chosen, cpu) ||
- cpupower_is_cpu_online(cpu))
- continue;
-
- if (cpupower_is_cpu_online(cpu) != 1)
+ cpupower_is_cpu_online(cpu) != 1)
continue;
printf(_("Setting cpu: %d\n"), cpu);