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Merge branches 'pm-cpufreq', 'pm-pci' and 'pm-sleep' 

Merge fixes for the ondemand and conservative cpufreq governors,
PCI power management and system wakeup framework.

* pm-cpufreq:
  cpufreq: governor: Avoid accessing invalid governor_data

* pm-pci:
  PCI / ACPI / PM: Resume all bridges on suspend-to-RAM

* pm-sleep:
  PM / sleep: wakeup: Fix build error caused by missing SRCU support
hifive-unleashed-5.1
Rafael J. Wysocki 2018-08-21 22:39:24 +02:00
parent 5ef499cd57 2a3eb51e30 9d64b539b7 3df6f61fff
commit 01ac7c4c2e
3 changed files with 13 additions and 6 deletions
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12
drivers/cpufreq/cpufreq_governor.c
View File

@ -555,12 +555,20 @@ EXPORT_SYMBOL_GPL(cpufreq_dbs_governor_stop);
void cpufreq_dbs_governor_limits(struct cpufreq_policy *policy)
{
struct policy_dbs_info *policy_dbs = policy->governor_data;
struct policy_dbs_info *policy_dbs;
/* Protect gov->gdbs_data against cpufreq_dbs_governor_exit() */
mutex_lock(&gov_dbs_data_mutex);
policy_dbs = policy->governor_data;
if (!policy_dbs)
goto out;
mutex_lock(&policy_dbs->update_mutex);
cpufreq_policy_apply_limits(policy);
gov_update_sample_delay(policy_dbs, 0);
mutex_unlock(&policy_dbs->update_mutex);
out:
mutex_unlock(&gov_dbs_data_mutex);
}
EXPORT_SYMBOL_GPL(cpufreq_dbs_governor_limits);

6
drivers/pci/pci-acpi.c
View File

@ -632,13 +632,11 @@ static bool acpi_pci_need_resume(struct pci_dev *dev)
/*
* In some cases (eg. Samsung 305V4A) leaving a bridge in suspend over
* system-wide suspend/resume confuses the platform firmware, so avoid
* doing that, unless the bridge has a driver that should take care of
* the PM handling. According to Section 16.1.6 of ACPI 6.2, endpoint
* doing that. According to Section 16.1.6 of ACPI 6.2, endpoint
* devices are expected to be in D3 before invoking the S3 entry path
* from the firmware, so they should not be affected by this issue.
*/
if (pci_is_bridge(dev) && !dev->driver &&
acpi_target_system_state() != ACPI_STATE_S0)
if (pci_is_bridge(dev) && acpi_target_system_state() != ACPI_STATE_S0)
return true;
if (!adev || !acpi_device_power_manageable(adev))

1
kernel/power/Kconfig
View File

@ -105,6 +105,7 @@ config PM_SLEEP
def_bool y
depends on SUSPEND || HIBERNATE_CALLBACKS
select PM
select SRCU
config PM_SLEEP_SMP
def_bool y