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-rw-r--r--drivers/base/power/runtime.c69
1 files changed, 35 insertions, 34 deletions
diff --git a/drivers/base/power/runtime.c b/drivers/base/power/runtime.c
index 5a5cd1d8c4a9..50e726b6c2cf 100644
--- a/drivers/base/power/runtime.c
+++ b/drivers/base/power/runtime.c
@@ -243,8 +243,7 @@ void pm_runtime_set_memalloc_noio(struct device *dev, bool enable)
* flag was set by any one of the descendants.
*/
if (!dev || (!enable &&
- device_for_each_child(dev, NULL,
- dev_memalloc_noio)))
+ device_for_each_child(dev, NULL, dev_memalloc_noio)))
break;
}
mutex_unlock(&dev_hotplug_mutex);
@@ -265,15 +264,13 @@ static int rpm_check_suspend_allowed(struct device *dev)
retval = -EACCES;
else if (atomic_read(&dev->power.usage_count))
retval = -EAGAIN;
- else if (!dev->power.ignore_children &&
- atomic_read(&dev->power.child_count))
+ else if (!dev->power.ignore_children && atomic_read(&dev->power.child_count))
retval = -EBUSY;
/* Pending resume requests take precedence over suspends. */
- else if ((dev->power.deferred_resume
- && dev->power.runtime_status == RPM_SUSPENDING)
- || (dev->power.request_pending
- && dev->power.request == RPM_REQ_RESUME))
+ else if ((dev->power.deferred_resume &&
+ dev->power.runtime_status == RPM_SUSPENDING) ||
+ (dev->power.request_pending && dev->power.request == RPM_REQ_RESUME))
retval = -EAGAIN;
else if (__dev_pm_qos_resume_latency(dev) == 0)
retval = -EPERM;
@@ -404,9 +401,9 @@ static int __rpm_callback(int (*cb)(struct device *), struct device *dev)
*
* Do that if resume fails too.
*/
- if (use_links
- && ((dev->power.runtime_status == RPM_SUSPENDING && !retval)
- || (dev->power.runtime_status == RPM_RESUMING && retval))) {
+ if (use_links &&
+ ((dev->power.runtime_status == RPM_SUSPENDING && !retval) ||
+ (dev->power.runtime_status == RPM_RESUMING && retval))) {
idx = device_links_read_lock();
__rpm_put_suppliers(dev, false);
@@ -491,6 +488,7 @@ static int rpm_idle(struct device *dev, int rpmflags)
/* Act as though RPM_NOWAIT is always set. */
else if (dev->power.idle_notification)
retval = -EINPROGRESS;
+
if (retval)
goto out;
@@ -574,12 +572,12 @@ static int rpm_suspend(struct device *dev, int rpmflags)
/* Synchronous suspends are not allowed in the RPM_RESUMING state. */
if (dev->power.runtime_status == RPM_RESUMING && !(rpmflags & RPM_ASYNC))
retval = -EAGAIN;
+
if (retval)
goto out;
/* If the autosuspend_delay time hasn't expired yet, reschedule. */
- if ((rpmflags & RPM_AUTO)
- && dev->power.runtime_status != RPM_SUSPENDING) {
+ if ((rpmflags & RPM_AUTO) && dev->power.runtime_status != RPM_SUSPENDING) {
u64 expires = pm_runtime_autosuspend_expiration(dev);
if (expires != 0) {
@@ -594,7 +592,7 @@ static int rpm_suspend(struct device *dev, int rpmflags)
* rest.
*/
if (!(dev->power.timer_expires &&
- dev->power.timer_expires <= expires)) {
+ dev->power.timer_expires <= expires)) {
/*
* We add a slack of 25% to gather wakeups
* without sacrificing the granularity.
@@ -604,9 +602,9 @@ static int rpm_suspend(struct device *dev, int rpmflags)
dev->power.timer_expires = expires;
hrtimer_start_range_ns(&dev->power.suspend_timer,
- ns_to_ktime(expires),
- slack,
- HRTIMER_MODE_ABS);
+ ns_to_ktime(expires),
+ slack,
+ HRTIMER_MODE_ABS);
}
dev->power.timer_autosuspends = 1;
goto out;
@@ -797,8 +795,8 @@ static int rpm_resume(struct device *dev, int rpmflags)
goto out;
}
- if (dev->power.runtime_status == RPM_RESUMING
- || dev->power.runtime_status == RPM_SUSPENDING) {
+ if (dev->power.runtime_status == RPM_RESUMING ||
+ dev->power.runtime_status == RPM_SUSPENDING) {
DEFINE_WAIT(wait);
if (rpmflags & (RPM_ASYNC | RPM_NOWAIT)) {
@@ -825,8 +823,8 @@ static int rpm_resume(struct device *dev, int rpmflags)
for (;;) {
prepare_to_wait(&dev->power.wait_queue, &wait,
TASK_UNINTERRUPTIBLE);
- if (dev->power.runtime_status != RPM_RESUMING
- && dev->power.runtime_status != RPM_SUSPENDING)
+ if (dev->power.runtime_status != RPM_RESUMING &&
+ dev->power.runtime_status != RPM_SUSPENDING)
break;
spin_unlock_irq(&dev->power.lock);
@@ -846,9 +844,9 @@ static int rpm_resume(struct device *dev, int rpmflags)
*/
if (dev->power.no_callbacks && !parent && dev->parent) {
spin_lock_nested(&dev->parent->power.lock, SINGLE_DEPTH_NESTING);
- if (dev->parent->power.disable_depth > 0
- || dev->parent->power.ignore_children
- || dev->parent->power.runtime_status == RPM_ACTIVE) {
+ if (dev->parent->power.disable_depth > 0 ||
+ dev->parent->power.ignore_children ||
+ dev->parent->power.runtime_status == RPM_ACTIVE) {
atomic_inc(&dev->parent->power.child_count);
spin_unlock(&dev->parent->power.lock);
retval = 1;
@@ -877,6 +875,7 @@ static int rpm_resume(struct device *dev, int rpmflags)
parent = dev->parent;
if (dev->power.irq_safe)
goto skip_parent;
+
spin_unlock(&dev->power.lock);
pm_runtime_get_noresume(parent);
@@ -886,8 +885,8 @@ static int rpm_resume(struct device *dev, int rpmflags)
* Resume the parent if it has runtime PM enabled and not been
* set to ignore its children.
*/
- if (!parent->power.disable_depth
- && !parent->power.ignore_children) {
+ if (!parent->power.disable_depth &&
+ !parent->power.ignore_children) {
rpm_resume(parent, 0);
if (parent->power.runtime_status != RPM_ACTIVE)
retval = -EBUSY;
@@ -897,6 +896,7 @@ static int rpm_resume(struct device *dev, int rpmflags)
spin_lock(&dev->power.lock);
if (retval)
goto out;
+
goto repeat;
}
skip_parent:
@@ -1301,9 +1301,9 @@ int __pm_runtime_set_status(struct device *dev, unsigned int status)
* not active, has runtime PM enabled and the
* 'power.ignore_children' flag unset.
*/
- if (!parent->power.disable_depth
- && !parent->power.ignore_children
- && parent->power.runtime_status != RPM_ACTIVE) {
+ if (!parent->power.disable_depth &&
+ !parent->power.ignore_children &&
+ parent->power.runtime_status != RPM_ACTIVE) {
dev_err(dev, "runtime PM trying to activate child device %s but parent (%s) is not active\n",
dev_name(dev),
dev_name(parent));
@@ -1368,9 +1368,9 @@ static void __pm_runtime_barrier(struct device *dev)
dev->power.request_pending = false;
}
- if (dev->power.runtime_status == RPM_SUSPENDING
- || dev->power.runtime_status == RPM_RESUMING
- || dev->power.idle_notification) {
+ if (dev->power.runtime_status == RPM_SUSPENDING ||
+ dev->power.runtime_status == RPM_RESUMING ||
+ dev->power.idle_notification) {
DEFINE_WAIT(wait);
/* Suspend, wake-up or idle notification in progress. */
@@ -1455,8 +1455,8 @@ void __pm_runtime_disable(struct device *dev, bool check_resume)
* means there probably is some I/O to process and disabling runtime PM
* shouldn't prevent the device from processing the I/O.
*/
- if (check_resume && dev->power.request_pending
- && dev->power.request == RPM_REQ_RESUME) {
+ if (check_resume && dev->power.request_pending &&
+ dev->power.request == RPM_REQ_RESUME) {
/*
* Prevent suspends and idle notifications from being carried
* out after we have woken up the device.
@@ -1616,6 +1616,7 @@ void pm_runtime_irq_safe(struct device *dev)
{
if (dev->parent)
pm_runtime_get_sync(dev->parent);
+
spin_lock_irq(&dev->power.lock);
dev->power.irq_safe = 1;
spin_unlock_irq(&dev->power.lock);
generated by cgit v1.2.3 (git 2.39.1) at 2024-10-05 07:03:30 +0000