Merge branches 'pm-core', 'pm-opp', 'pm-domains', 'pm-cpu' and 'pm-avs'
* pm-core:
PM / wakeup: Set power.can_wakeup if wakeup_sysfs_add() fails
* pm-opp:
PM / OPP: Fix get sharing CPUs when hotplug is used
PM / OPP: OF: Use pr_debug() instead of pr_err() while adding OPP table
* pm-domains:
PM / Domains: Convert to using %pOF instead of full_name
PM / Domains: Extend generic power domain debugfs
PM / Domains: Add time accounting to various genpd states
* pm-cpu:
PM / CPU: replace raw_notifier with atomic_notifier
* pm-avs:
PM / AVS: rockchip-io: add io selectors and supplies for RV1108
diff --git a/Documentation/devicetree/bindings/power/rockchip-io-domain.txt b/Documentation/devicetree/bindings/power/rockchip-io-domain.txt
index 43c21fb..4a4766e 100644
--- a/Documentation/devicetree/bindings/power/rockchip-io-domain.txt
+++ b/Documentation/devicetree/bindings/power/rockchip-io-domain.txt
@@ -39,6 +39,8 @@
- "rockchip,rk3368-pmu-io-voltage-domain" for rk3368 pmu-domains
- "rockchip,rk3399-io-voltage-domain" for rk3399
- "rockchip,rk3399-pmu-io-voltage-domain" for rk3399 pmu-domains
+ - "rockchip,rv1108-io-voltage-domain" for rv1108
+ - "rockchip,rv1108-pmu-io-voltage-domain" for rv1108 pmu-domains
Deprecated properties:
- rockchip,grf: phandle to the syscon managing the "general register files"
diff --git a/drivers/base/power/domain.c b/drivers/base/power/domain.c
index 60303aa..e8ca5e2 100644
--- a/drivers/base/power/domain.c
+++ b/drivers/base/power/domain.c
@@ -209,6 +209,34 @@ static void genpd_sd_counter_inc(struct generic_pm_domain *genpd)
smp_mb__after_atomic();
}
+#ifdef CONFIG_DEBUG_FS
+static void genpd_update_accounting(struct generic_pm_domain *genpd)
+{
+ ktime_t delta, now;
+
+ now = ktime_get();
+ delta = ktime_sub(now, genpd->accounting_time);
+
+ /*
+ * If genpd->status is active, it means we are just
+ * out of off and so update the idle time and vice
+ * versa.
+ */
+ if (genpd->status == GPD_STATE_ACTIVE) {
+ int state_idx = genpd->state_idx;
+
+ genpd->states[state_idx].idle_time =
+ ktime_add(genpd->states[state_idx].idle_time, delta);
+ } else {
+ genpd->on_time = ktime_add(genpd->on_time, delta);
+ }
+
+ genpd->accounting_time = now;
+}
+#else
+static inline void genpd_update_accounting(struct generic_pm_domain *genpd) {}
+#endif
+
static int _genpd_power_on(struct generic_pm_domain *genpd, bool timed)
{
unsigned int state_idx = genpd->state_idx;
@@ -361,6 +389,7 @@ static int genpd_power_off(struct generic_pm_domain *genpd, bool one_dev_on,
}
genpd->status = GPD_STATE_POWER_OFF;
+ genpd_update_accounting(genpd);
list_for_each_entry(link, &genpd->slave_links, slave_node) {
genpd_sd_counter_dec(link->master);
@@ -413,6 +442,8 @@ static int genpd_power_on(struct generic_pm_domain *genpd, unsigned int depth)
goto err;
genpd->status = GPD_STATE_ACTIVE;
+ genpd_update_accounting(genpd);
+
return 0;
err:
@@ -1540,6 +1571,7 @@ int pm_genpd_init(struct generic_pm_domain *genpd,
genpd->max_off_time_changed = true;
genpd->provider = NULL;
genpd->has_provider = false;
+ genpd->accounting_time = ktime_get();
genpd->domain.ops.runtime_suspend = genpd_runtime_suspend;
genpd->domain.ops.runtime_resume = genpd_runtime_resume;
genpd->domain.ops.prepare = pm_genpd_prepare;
@@ -1743,7 +1775,7 @@ static int genpd_add_provider(struct device_node *np, genpd_xlate_t xlate,
mutex_lock(&of_genpd_mutex);
list_add(&cp->link, &of_genpd_providers);
mutex_unlock(&of_genpd_mutex);
- pr_debug("Added domain provider from %s\n", np->full_name);
+ pr_debug("Added domain provider from %pOF\n", np);
return 0;
}
@@ -2149,16 +2181,16 @@ static int genpd_parse_state(struct genpd_power_state *genpd_state,
err = of_property_read_u32(state_node, "entry-latency-us",
&entry_latency);
if (err) {
- pr_debug(" * %s missing entry-latency-us property\n",
- state_node->full_name);
+ pr_debug(" * %pOF missing entry-latency-us property\n",
+ state_node);
return -EINVAL;
}
err = of_property_read_u32(state_node, "exit-latency-us",
&exit_latency);
if (err) {
- pr_debug(" * %s missing exit-latency-us property\n",
- state_node->full_name);
+ pr_debug(" * %pOF missing exit-latency-us property\n",
+ state_node);
return -EINVAL;
}
@@ -2212,8 +2244,8 @@ int of_genpd_parse_idle_states(struct device_node *dn,
ret = genpd_parse_state(&st[i++], np);
if (ret) {
pr_err
- ("Parsing idle state node %s failed with err %d\n",
- np->full_name, ret);
+ ("Parsing idle state node %pOF failed with err %d\n",
+ np, ret);
of_node_put(np);
kfree(st);
return ret;
@@ -2327,7 +2359,7 @@ static int pm_genpd_summary_one(struct seq_file *s,
return 0;
}
-static int pm_genpd_summary_show(struct seq_file *s, void *data)
+static int genpd_summary_show(struct seq_file *s, void *data)
{
struct generic_pm_domain *genpd;
int ret = 0;
@@ -2350,21 +2382,187 @@ static int pm_genpd_summary_show(struct seq_file *s, void *data)
return ret;
}
-static int pm_genpd_summary_open(struct inode *inode, struct file *file)
+static int genpd_status_show(struct seq_file *s, void *data)
{
- return single_open(file, pm_genpd_summary_show, NULL);
+ static const char * const status_lookup[] = {
+ [GPD_STATE_ACTIVE] = "on",
+ [GPD_STATE_POWER_OFF] = "off"
+ };
+
+ struct generic_pm_domain *genpd = s->private;
+ int ret = 0;
+
+ ret = genpd_lock_interruptible(genpd);
+ if (ret)
+ return -ERESTARTSYS;
+
+ if (WARN_ON_ONCE(genpd->status >= ARRAY_SIZE(status_lookup)))
+ goto exit;
+
+ if (genpd->status == GPD_STATE_POWER_OFF)
+ seq_printf(s, "%s-%u\n", status_lookup[genpd->status],
+ genpd->state_idx);
+ else
+ seq_printf(s, "%s\n", status_lookup[genpd->status]);
+exit:
+ genpd_unlock(genpd);
+ return ret;
}
-static const struct file_operations pm_genpd_summary_fops = {
- .open = pm_genpd_summary_open,
- .read = seq_read,
- .llseek = seq_lseek,
- .release = single_release,
-};
+static int genpd_sub_domains_show(struct seq_file *s, void *data)
+{
+ struct generic_pm_domain *genpd = s->private;
+ struct gpd_link *link;
+ int ret = 0;
+
+ ret = genpd_lock_interruptible(genpd);
+ if (ret)
+ return -ERESTARTSYS;
+
+ list_for_each_entry(link, &genpd->master_links, master_node)
+ seq_printf(s, "%s\n", link->slave->name);
+
+ genpd_unlock(genpd);
+ return ret;
+}
+
+static int genpd_idle_states_show(struct seq_file *s, void *data)
+{
+ struct generic_pm_domain *genpd = s->private;
+ unsigned int i;
+ int ret = 0;
+
+ ret = genpd_lock_interruptible(genpd);
+ if (ret)
+ return -ERESTARTSYS;
+
+ seq_puts(s, "State Time Spent(ms)\n");
+
+ for (i = 0; i < genpd->state_count; i++) {
+ ktime_t delta = 0;
+ s64 msecs;
+
+ if ((genpd->status == GPD_STATE_POWER_OFF) &&
+ (genpd->state_idx == i))
+ delta = ktime_sub(ktime_get(), genpd->accounting_time);
+
+ msecs = ktime_to_ms(
+ ktime_add(genpd->states[i].idle_time, delta));
+ seq_printf(s, "S%-13i %lld\n", i, msecs);
+ }
+
+ genpd_unlock(genpd);
+ return ret;
+}
+
+static int genpd_active_time_show(struct seq_file *s, void *data)
+{
+ struct generic_pm_domain *genpd = s->private;
+ ktime_t delta = 0;
+ int ret = 0;
+
+ ret = genpd_lock_interruptible(genpd);
+ if (ret)
+ return -ERESTARTSYS;
+
+ if (genpd->status == GPD_STATE_ACTIVE)
+ delta = ktime_sub(ktime_get(), genpd->accounting_time);
+
+ seq_printf(s, "%lld ms\n", ktime_to_ms(
+ ktime_add(genpd->on_time, delta)));
+
+ genpd_unlock(genpd);
+ return ret;
+}
+
+static int genpd_total_idle_time_show(struct seq_file *s, void *data)
+{
+ struct generic_pm_domain *genpd = s->private;
+ ktime_t delta = 0, total = 0;
+ unsigned int i;
+ int ret = 0;
+
+ ret = genpd_lock_interruptible(genpd);
+ if (ret)
+ return -ERESTARTSYS;
+
+ for (i = 0; i < genpd->state_count; i++) {
+
+ if ((genpd->status == GPD_STATE_POWER_OFF) &&
+ (genpd->state_idx == i))
+ delta = ktime_sub(ktime_get(), genpd->accounting_time);
+
+ total = ktime_add(total, genpd->states[i].idle_time);
+ }
+ total = ktime_add(total, delta);
+
+ seq_printf(s, "%lld ms\n", ktime_to_ms(total));
+
+ genpd_unlock(genpd);
+ return ret;
+}
+
+
+static int genpd_devices_show(struct seq_file *s, void *data)
+{
+ struct generic_pm_domain *genpd = s->private;
+ struct pm_domain_data *pm_data;
+ const char *kobj_path;
+ int ret = 0;
+
+ ret = genpd_lock_interruptible(genpd);
+ if (ret)
+ return -ERESTARTSYS;
+
+ list_for_each_entry(pm_data, &genpd->dev_list, list_node) {
+ kobj_path = kobject_get_path(&pm_data->dev->kobj,
+ genpd_is_irq_safe(genpd) ?
+ GFP_ATOMIC : GFP_KERNEL);
+ if (kobj_path == NULL)
+ continue;
+
+ seq_printf(s, "%s\n", kobj_path);
+ kfree(kobj_path);
+ }
+
+ genpd_unlock(genpd);
+ return ret;
+}
+
+#define define_genpd_open_function(name) \
+static int genpd_##name##_open(struct inode *inode, struct file *file) \
+{ \
+ return single_open(file, genpd_##name##_show, inode->i_private); \
+}
+
+define_genpd_open_function(summary);
+define_genpd_open_function(status);
+define_genpd_open_function(sub_domains);
+define_genpd_open_function(idle_states);
+define_genpd_open_function(active_time);
+define_genpd_open_function(total_idle_time);
+define_genpd_open_function(devices);
+
+#define define_genpd_debugfs_fops(name) \
+static const struct file_operations genpd_##name##_fops = { \
+ .open = genpd_##name##_open, \
+ .read = seq_read, \
+ .llseek = seq_lseek, \
+ .release = single_release, \
+}
+
+define_genpd_debugfs_fops(summary);
+define_genpd_debugfs_fops(status);
+define_genpd_debugfs_fops(sub_domains);
+define_genpd_debugfs_fops(idle_states);
+define_genpd_debugfs_fops(active_time);
+define_genpd_debugfs_fops(total_idle_time);
+define_genpd_debugfs_fops(devices);
static int __init pm_genpd_debug_init(void)
{
struct dentry *d;
+ struct generic_pm_domain *genpd;
pm_genpd_debugfs_dir = debugfs_create_dir("pm_genpd", NULL);
@@ -2372,10 +2570,29 @@ static int __init pm_genpd_debug_init(void)
return -ENOMEM;
d = debugfs_create_file("pm_genpd_summary", S_IRUGO,
- pm_genpd_debugfs_dir, NULL, &pm_genpd_summary_fops);
+ pm_genpd_debugfs_dir, NULL, &genpd_summary_fops);
if (!d)
return -ENOMEM;
+ list_for_each_entry(genpd, &gpd_list, gpd_list_node) {
+ d = debugfs_create_dir(genpd->name, pm_genpd_debugfs_dir);
+ if (!d)
+ return -ENOMEM;
+
+ debugfs_create_file("current_state", 0444,
+ d, genpd, &genpd_status_fops);
+ debugfs_create_file("sub_domains", 0444,
+ d, genpd, &genpd_sub_domains_fops);
+ debugfs_create_file("idle_states", 0444,
+ d, genpd, &genpd_idle_states_fops);
+ debugfs_create_file("active_time", 0444,
+ d, genpd, &genpd_active_time_fops);
+ debugfs_create_file("total_idle_time", 0444,
+ d, genpd, &genpd_total_idle_time_fops);
+ debugfs_create_file("devices", 0444,
+ d, genpd, &genpd_devices_fops);
+ }
+
return 0;
}
late_initcall(pm_genpd_debug_init);
diff --git a/drivers/base/power/opp/of.c b/drivers/base/power/opp/of.c
index 57eec1c..0b71888 100644
--- a/drivers/base/power/opp/of.c
+++ b/drivers/base/power/opp/of.c
@@ -248,15 +248,22 @@ void dev_pm_opp_of_remove_table(struct device *dev)
}
EXPORT_SYMBOL_GPL(dev_pm_opp_of_remove_table);
-/* Returns opp descriptor node for a device, caller must do of_node_put() */
-struct device_node *dev_pm_opp_of_get_opp_desc_node(struct device *dev)
+/* Returns opp descriptor node for a device node, caller must
+ * do of_node_put() */
+static struct device_node *_opp_of_get_opp_desc_node(struct device_node *np)
{
/*
* There should be only ONE phandle present in "operating-points-v2"
* property.
*/
- return of_parse_phandle(dev->of_node, "operating-points-v2", 0);
+ return of_parse_phandle(np, "operating-points-v2", 0);
+}
+
+/* Returns opp descriptor node for a device, caller must do of_node_put() */
+struct device_node *dev_pm_opp_of_get_opp_desc_node(struct device *dev)
+{
+ return _opp_of_get_opp_desc_node(dev->of_node);
}
EXPORT_SYMBOL_GPL(dev_pm_opp_of_get_opp_desc_node);
@@ -539,8 +546,12 @@ int dev_pm_opp_of_cpumask_add_table(const struct cpumask *cpumask)
ret = dev_pm_opp_of_add_table(cpu_dev);
if (ret) {
- pr_err("%s: couldn't find opp table for cpu:%d, %d\n",
- __func__, cpu, ret);
+ /*
+ * OPP may get registered dynamically, don't print error
+ * message here.
+ */
+ pr_debug("%s: couldn't find opp table for cpu:%d, %d\n",
+ __func__, cpu, ret);
/* Free all other OPPs */
dev_pm_opp_of_cpumask_remove_table(cpumask);
@@ -572,8 +583,7 @@ EXPORT_SYMBOL_GPL(dev_pm_opp_of_cpumask_add_table);
int dev_pm_opp_of_get_sharing_cpus(struct device *cpu_dev,
struct cpumask *cpumask)
{
- struct device_node *np, *tmp_np;
- struct device *tcpu_dev;
+ struct device_node *np, *tmp_np, *cpu_np;
int cpu, ret = 0;
/* Get OPP descriptor node */
@@ -593,19 +603,18 @@ int dev_pm_opp_of_get_sharing_cpus(struct device *cpu_dev,
if (cpu == cpu_dev->id)
continue;
- tcpu_dev = get_cpu_device(cpu);
- if (!tcpu_dev) {
- dev_err(cpu_dev, "%s: failed to get cpu%d device\n",
+ cpu_np = of_get_cpu_node(cpu, NULL);
+ if (!cpu_np) {
+ dev_err(cpu_dev, "%s: failed to get cpu%d node\n",
__func__, cpu);
- ret = -ENODEV;
+ ret = -ENOENT;
goto put_cpu_node;
}
/* Get OPP descriptor node */
- tmp_np = dev_pm_opp_of_get_opp_desc_node(tcpu_dev);
+ tmp_np = _opp_of_get_opp_desc_node(cpu_np);
if (!tmp_np) {
- dev_err(tcpu_dev, "%s: Couldn't find opp node.\n",
- __func__);
+ pr_err("%pOF: Couldn't find opp node\n", cpu_np);
ret = -ENOENT;
goto put_cpu_node;
}
diff --git a/drivers/base/power/wakeup.c b/drivers/base/power/wakeup.c
index 144e6d8..b49efe3 100644
--- a/drivers/base/power/wakeup.c
+++ b/drivers/base/power/wakeup.c
@@ -412,15 +412,17 @@ void device_set_wakeup_capable(struct device *dev, bool capable)
if (!!dev->power.can_wakeup == !!capable)
return;
+ dev->power.can_wakeup = capable;
if (device_is_registered(dev) && !list_empty(&dev->power.entry)) {
if (capable) {
- if (wakeup_sysfs_add(dev))
- return;
+ int ret = wakeup_sysfs_add(dev);
+
+ if (ret)
+ dev_info(dev, "Wakeup sysfs attributes not added\n");
} else {
wakeup_sysfs_remove(dev);
}
}
- dev->power.can_wakeup = capable;
}
EXPORT_SYMBOL_GPL(device_set_wakeup_capable);
diff --git a/drivers/power/avs/rockchip-io-domain.c b/drivers/power/avs/rockchip-io-domain.c
index 031a343..75f63e3 100644
--- a/drivers/power/avs/rockchip-io-domain.c
+++ b/drivers/power/avs/rockchip-io-domain.c
@@ -349,6 +349,36 @@ static const struct rockchip_iodomain_soc_data soc_data_rk3399_pmu = {
.init = rk3399_pmu_iodomain_init,
};
+static const struct rockchip_iodomain_soc_data soc_data_rv1108 = {
+ .grf_offset = 0x404,
+ .supply_names = {
+ NULL,
+ NULL,
+ NULL,
+ NULL,
+ NULL,
+ NULL,
+ NULL,
+ NULL,
+ NULL,
+ NULL,
+ NULL,
+ "vccio1",
+ "vccio2",
+ "vccio3",
+ "vccio5",
+ "vccio6",
+ },
+
+};
+
+static const struct rockchip_iodomain_soc_data soc_data_rv1108_pmu = {
+ .grf_offset = 0x104,
+ .supply_names = {
+ "pmu",
+ },
+};
+
static const struct of_device_id rockchip_iodomain_match[] = {
{
.compatible = "rockchip,rk3188-io-voltage-domain",
@@ -382,6 +412,14 @@ static const struct of_device_id rockchip_iodomain_match[] = {
.compatible = "rockchip,rk3399-pmu-io-voltage-domain",
.data = (void *)&soc_data_rk3399_pmu
},
+ {
+ .compatible = "rockchip,rv1108-io-voltage-domain",
+ .data = (void *)&soc_data_rv1108
+ },
+ {
+ .compatible = "rockchip,rv1108-pmu-io-voltage-domain",
+ .data = (void *)&soc_data_rv1108_pmu
+ },
{ /* sentinel */ },
};
MODULE_DEVICE_TABLE(of, rockchip_iodomain_match);
diff --git a/include/linux/pm_domain.h b/include/linux/pm_domain.h
index 41004d9..84f423d 100644
--- a/include/linux/pm_domain.h
+++ b/include/linux/pm_domain.h
@@ -43,6 +43,7 @@ struct genpd_power_state {
s64 power_on_latency_ns;
s64 residency_ns;
struct fwnode_handle *fwnode;
+ ktime_t idle_time;
};
struct genpd_lock_ops;
@@ -78,6 +79,8 @@ struct generic_pm_domain {
unsigned int state_count; /* number of states */
unsigned int state_idx; /* state that genpd will go to when off */
void *free; /* Free the state that was allocated for default */
+ ktime_t on_time;
+ ktime_t accounting_time;
const struct genpd_lock_ops *lock_ops;
union {
struct mutex mlock;
diff --git a/kernel/cpu_pm.c b/kernel/cpu_pm.c
index 009cc9a..67b02e1 100644
--- a/kernel/cpu_pm.c
+++ b/kernel/cpu_pm.c
@@ -22,15 +22,21 @@
#include <linux/spinlock.h>
#include <linux/syscore_ops.h>
-static DEFINE_RWLOCK(cpu_pm_notifier_lock);
-static RAW_NOTIFIER_HEAD(cpu_pm_notifier_chain);
+static ATOMIC_NOTIFIER_HEAD(cpu_pm_notifier_chain);
static int cpu_pm_notify(enum cpu_pm_event event, int nr_to_call, int *nr_calls)
{
int ret;
- ret = __raw_notifier_call_chain(&cpu_pm_notifier_chain, event, NULL,
+ /*
+ * __atomic_notifier_call_chain has a RCU read critical section, which
+ * could be disfunctional in cpu idle. Copy RCU_NONIDLE code to let
+ * RCU know this.
+ */
+ rcu_irq_enter_irqson();
+ ret = __atomic_notifier_call_chain(&cpu_pm_notifier_chain, event, NULL,
nr_to_call, nr_calls);
+ rcu_irq_exit_irqson();
return notifier_to_errno(ret);
}
@@ -47,14 +53,7 @@ static int cpu_pm_notify(enum cpu_pm_event event, int nr_to_call, int *nr_calls)
*/
int cpu_pm_register_notifier(struct notifier_block *nb)
{
- unsigned long flags;
- int ret;
-
- write_lock_irqsave(&cpu_pm_notifier_lock, flags);
- ret = raw_notifier_chain_register(&cpu_pm_notifier_chain, nb);
- write_unlock_irqrestore(&cpu_pm_notifier_lock, flags);
-
- return ret;
+ return atomic_notifier_chain_register(&cpu_pm_notifier_chain, nb);
}
EXPORT_SYMBOL_GPL(cpu_pm_register_notifier);
@@ -69,14 +68,7 @@ EXPORT_SYMBOL_GPL(cpu_pm_register_notifier);
*/
int cpu_pm_unregister_notifier(struct notifier_block *nb)
{
- unsigned long flags;
- int ret;
-
- write_lock_irqsave(&cpu_pm_notifier_lock, flags);
- ret = raw_notifier_chain_unregister(&cpu_pm_notifier_chain, nb);
- write_unlock_irqrestore(&cpu_pm_notifier_lock, flags);
-
- return ret;
+ return atomic_notifier_chain_unregister(&cpu_pm_notifier_chain, nb);
}
EXPORT_SYMBOL_GPL(cpu_pm_unregister_notifier);
@@ -100,7 +92,6 @@ int cpu_pm_enter(void)
int nr_calls;
int ret = 0;
- read_lock(&cpu_pm_notifier_lock);
ret = cpu_pm_notify(CPU_PM_ENTER, -1, &nr_calls);
if (ret)
/*
@@ -108,7 +99,6 @@ int cpu_pm_enter(void)
* PM entry who are notified earlier to prepare for it.
*/
cpu_pm_notify(CPU_PM_ENTER_FAILED, nr_calls - 1, NULL);
- read_unlock(&cpu_pm_notifier_lock);
return ret;
}
@@ -128,13 +118,7 @@ EXPORT_SYMBOL_GPL(cpu_pm_enter);
*/
int cpu_pm_exit(void)
{
- int ret;
-
- read_lock(&cpu_pm_notifier_lock);
- ret = cpu_pm_notify(CPU_PM_EXIT, -1, NULL);
- read_unlock(&cpu_pm_notifier_lock);
-
- return ret;
+ return cpu_pm_notify(CPU_PM_EXIT, -1, NULL);
}
EXPORT_SYMBOL_GPL(cpu_pm_exit);
@@ -159,7 +143,6 @@ int cpu_cluster_pm_enter(void)
int nr_calls;
int ret = 0;
- read_lock(&cpu_pm_notifier_lock);
ret = cpu_pm_notify(CPU_CLUSTER_PM_ENTER, -1, &nr_calls);
if (ret)
/*
@@ -167,7 +150,6 @@ int cpu_cluster_pm_enter(void)
* PM entry who are notified earlier to prepare for it.
*/
cpu_pm_notify(CPU_CLUSTER_PM_ENTER_FAILED, nr_calls - 1, NULL);
- read_unlock(&cpu_pm_notifier_lock);
return ret;
}
@@ -190,13 +172,7 @@ EXPORT_SYMBOL_GPL(cpu_cluster_pm_enter);
*/
int cpu_cluster_pm_exit(void)
{
- int ret;
-
- read_lock(&cpu_pm_notifier_lock);
- ret = cpu_pm_notify(CPU_CLUSTER_PM_EXIT, -1, NULL);
- read_unlock(&cpu_pm_notifier_lock);
-
- return ret;
+ return cpu_pm_notify(CPU_CLUSTER_PM_EXIT, -1, NULL);
}
EXPORT_SYMBOL_GPL(cpu_cluster_pm_exit);