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-rw-r--r--drivers/acpi/Kconfig1
-rw-r--r--drivers/acpi/bus.c23
-rw-r--r--drivers/acpi/sleep.c4
-rw-r--r--drivers/base/Makefile2
-rw-r--r--drivers/base/power/Makefile3
-rw-r--r--drivers/base/power/main.c175
-rw-r--r--drivers/base/power/opp.c2
-rw-r--r--drivers/base/power/power.h21
-rw-r--r--drivers/base/power/runtime.c37
-rw-r--r--drivers/base/power/sysfs.c78
-rw-r--r--drivers/base/power/trace.c6
-rw-r--r--drivers/base/power/wakeup.c109
-rw-r--r--drivers/base/syscore.c117
-rw-r--r--drivers/net/e1000e/netdev.c8
-rw-r--r--drivers/net/pch_gbe/pch_gbe_main.c2
-rw-r--r--drivers/pci/pci-driver.c4
-rw-r--r--drivers/scsi/Makefile2
-rw-r--r--drivers/scsi/scsi_priv.h2
-rw-r--r--drivers/scsi/scsi_sysfs.c2
-rw-r--r--drivers/usb/core/hcd-pci.c4
-rw-r--r--drivers/usb/core/hub.c10
21 files changed, 405 insertions, 207 deletions
diff --git a/drivers/acpi/Kconfig b/drivers/acpi/Kconfig
index 2aa042a5da6d..3a17ca5fff6f 100644
--- a/drivers/acpi/Kconfig
+++ b/drivers/acpi/Kconfig
@@ -7,7 +7,6 @@ menuconfig ACPI
depends on !IA64_HP_SIM
depends on IA64 || X86
depends on PCI
- depends on PM
select PNP
default y
help
diff --git a/drivers/acpi/bus.c b/drivers/acpi/bus.c
index 7ced61f39492..9749980ca6ca 100644
--- a/drivers/acpi/bus.c
+++ b/drivers/acpi/bus.c
@@ -40,6 +40,7 @@
#include <acpi/acpi_bus.h>
#include <acpi/acpi_drivers.h>
#include <linux/dmi.h>
+#include <linux/suspend.h>
#include "internal.h"
@@ -1006,8 +1007,7 @@ struct kobject *acpi_kobj;
static int __init acpi_init(void)
{
- int result = 0;
-
+ int result;
if (acpi_disabled) {
printk(KERN_INFO PREFIX "Interpreter disabled.\n");
@@ -1022,29 +1022,18 @@ static int __init acpi_init(void)
init_acpi_device_notify();
result = acpi_bus_init();
-
- if (!result) {
- pci_mmcfg_late_init();
- if (!(pm_flags & PM_APM))
- pm_flags |= PM_ACPI;
- else {
- printk(KERN_INFO PREFIX
- "APM is already active, exiting\n");
- disable_acpi();
- result = -ENODEV;
- }
- } else
+ if (result) {
disable_acpi();
-
- if (acpi_disabled)
return result;
+ }
+ pci_mmcfg_late_init();
acpi_scan_init();
acpi_ec_init();
acpi_debugfs_init();
acpi_sleep_proc_init();
acpi_wakeup_device_init();
- return result;
+ return 0;
}
subsys_initcall(acpi_init);
diff --git a/drivers/acpi/sleep.c b/drivers/acpi/sleep.c
index d6a8cd14de2e..8ea092fad3f6 100644
--- a/drivers/acpi/sleep.c
+++ b/drivers/acpi/sleep.c
@@ -585,7 +585,7 @@ int acpi_suspend(u32 acpi_state)
return -EINVAL;
}
-#ifdef CONFIG_PM_OPS
+#ifdef CONFIG_PM
/**
* acpi_pm_device_sleep_state - return preferred power state of ACPI device
* in the system sleep state given by %acpi_target_sleep_state
@@ -671,7 +671,7 @@ int acpi_pm_device_sleep_state(struct device *dev, int *d_min_p)
*d_min_p = d_min;
return d_max;
}
-#endif /* CONFIG_PM_OPS */
+#endif /* CONFIG_PM */
#ifdef CONFIG_PM_SLEEP
/**
diff --git a/drivers/base/Makefile b/drivers/base/Makefile
index 5f51c3b4451e..4c5701c15f53 100644
--- a/drivers/base/Makefile
+++ b/drivers/base/Makefile
@@ -1,6 +1,6 @@
# Makefile for the Linux device tree
-obj-y := core.o sys.o bus.o dd.o \
+obj-y := core.o sys.o bus.o dd.o syscore.o \
driver.o class.o platform.o \
cpu.o firmware.o init.o map.o devres.o \
attribute_container.o transport_class.o
diff --git a/drivers/base/power/Makefile b/drivers/base/power/Makefile
index abe46edfe5b4..118c1b92a511 100644
--- a/drivers/base/power/Makefile
+++ b/drivers/base/power/Makefile
@@ -1,7 +1,6 @@
-obj-$(CONFIG_PM) += sysfs.o
+obj-$(CONFIG_PM) += sysfs.o generic_ops.o
obj-$(CONFIG_PM_SLEEP) += main.o wakeup.o
obj-$(CONFIG_PM_RUNTIME) += runtime.o
-obj-$(CONFIG_PM_OPS) += generic_ops.o
obj-$(CONFIG_PM_TRACE_RTC) += trace.o
obj-$(CONFIG_PM_OPP) += opp.o
diff --git a/drivers/base/power/main.c b/drivers/base/power/main.c
index 83404973f97a..052dc53eef38 100644
--- a/drivers/base/power/main.c
+++ b/drivers/base/power/main.c
@@ -423,26 +423,22 @@ static int device_resume_noirq(struct device *dev, pm_message_t state)
TRACE_DEVICE(dev);
TRACE_RESUME(0);
- if (dev->bus && dev->bus->pm) {
- pm_dev_dbg(dev, state, "EARLY ");
- error = pm_noirq_op(dev, dev->bus->pm, state);
- if (error)
- goto End;
+ if (dev->pwr_domain) {
+ pm_dev_dbg(dev, state, "EARLY power domain ");
+ pm_noirq_op(dev, &dev->pwr_domain->ops, state);
}
if (dev->type && dev->type->pm) {
pm_dev_dbg(dev, state, "EARLY type ");
error = pm_noirq_op(dev, dev->type->pm, state);
- if (error)
- goto End;
- }
-
- if (dev->class && dev->class->pm) {
+ } else if (dev->class && dev->class->pm) {
pm_dev_dbg(dev, state, "EARLY class ");
error = pm_noirq_op(dev, dev->class->pm, state);
+ } else if (dev->bus && dev->bus->pm) {
+ pm_dev_dbg(dev, state, "EARLY ");
+ error = pm_noirq_op(dev, dev->bus->pm, state);
}
-End:
TRACE_RESUME(error);
return error;
}
@@ -518,36 +514,39 @@ static int device_resume(struct device *dev, pm_message_t state, bool async)
dev->power.in_suspend = false;
- if (dev->bus) {
- if (dev->bus->pm) {
- pm_dev_dbg(dev, state, "");
- error = pm_op(dev, dev->bus->pm, state);
- } else if (dev->bus->resume) {
- pm_dev_dbg(dev, state, "legacy ");
- error = legacy_resume(dev, dev->bus->resume);
- }
- if (error)
- goto End;
+ if (dev->pwr_domain) {
+ pm_dev_dbg(dev, state, "power domain ");
+ pm_op(dev, &dev->pwr_domain->ops, state);
}
- if (dev->type) {
- if (dev->type->pm) {
- pm_dev_dbg(dev, state, "type ");
- error = pm_op(dev, dev->type->pm, state);
- }
- if (error)
- goto End;
+ if (dev->type && dev->type->pm) {
+ pm_dev_dbg(dev, state, "type ");
+ error = pm_op(dev, dev->type->pm, state);
+ goto End;
}
if (dev->class) {
if (dev->class->pm) {
pm_dev_dbg(dev, state, "class ");
error = pm_op(dev, dev->class->pm, state);
+ goto End;
} else if (dev->class->resume) {
pm_dev_dbg(dev, state, "legacy class ");
error = legacy_resume(dev, dev->class->resume);
+ goto End;
}
}
+
+ if (dev->bus) {
+ if (dev->bus->pm) {
+ pm_dev_dbg(dev, state, "");
+ error = pm_op(dev, dev->bus->pm, state);
+ } else if (dev->bus->resume) {
+ pm_dev_dbg(dev, state, "legacy ");
+ error = legacy_resume(dev, dev->bus->resume);
+ }
+ }
+
End:
device_unlock(dev);
complete_all(&dev->power.completion);
@@ -629,19 +628,23 @@ static void device_complete(struct device *dev, pm_message_t state)
{
device_lock(dev);
- if (dev->class && dev->class->pm && dev->class->pm->complete) {
- pm_dev_dbg(dev, state, "completing class ");
- dev->class->pm->complete(dev);
+ if (dev->pwr_domain && dev->pwr_domain->ops.complete) {
+ pm_dev_dbg(dev, state, "completing power domain ");
+ dev->pwr_domain->ops.complete(dev);
}
- if (dev->type && dev->type->pm && dev->type->pm->complete) {
+ if (dev->type && dev->type->pm) {
pm_dev_dbg(dev, state, "completing type ");
- dev->type->pm->complete(dev);
- }
-
- if (dev->bus && dev->bus->pm && dev->bus->pm->complete) {
+ if (dev->type->pm->complete)
+ dev->type->pm->complete(dev);
+ } else if (dev->class && dev->class->pm) {
+ pm_dev_dbg(dev, state, "completing class ");
+ if (dev->class->pm->complete)
+ dev->class->pm->complete(dev);
+ } else if (dev->bus && dev->bus->pm) {
pm_dev_dbg(dev, state, "completing ");
- dev->bus->pm->complete(dev);
+ if (dev->bus->pm->complete)
+ dev->bus->pm->complete(dev);
}
device_unlock(dev);
@@ -669,7 +672,6 @@ static void dpm_complete(pm_message_t state)
mutex_unlock(&dpm_list_mtx);
device_complete(dev, state);
- pm_runtime_put_sync(dev);
mutex_lock(&dpm_list_mtx);
put_device(dev);
@@ -727,29 +729,31 @@ static pm_message_t resume_event(pm_message_t sleep_state)
*/
static int device_suspend_noirq(struct device *dev, pm_message_t state)
{
- int error = 0;
-
- if (dev->class && dev->class->pm) {
- pm_dev_dbg(dev, state, "LATE class ");
- error = pm_noirq_op(dev, dev->class->pm, state);
- if (error)
- goto End;
- }
+ int error;
if (dev->type && dev->type->pm) {
pm_dev_dbg(dev, state, "LATE type ");
error = pm_noirq_op(dev, dev->type->pm, state);
if (error)
- goto End;
- }
-
- if (dev->bus && dev->bus->pm) {
+ return error;
+ } else if (dev->class && dev->class->pm) {
+ pm_dev_dbg(dev, state, "LATE class ");
+ error = pm_noirq_op(dev, dev->class->pm, state);
+ if (error)
+ return error;
+ } else if (dev->bus && dev->bus->pm) {
pm_dev_dbg(dev, state, "LATE ");
error = pm_noirq_op(dev, dev->bus->pm, state);
+ if (error)
+ return error;
}
-End:
- return error;
+ if (dev->pwr_domain) {
+ pm_dev_dbg(dev, state, "LATE power domain ");
+ pm_noirq_op(dev, &dev->pwr_domain->ops, state);
+ }
+
+ return 0;
}
/**
@@ -836,25 +840,22 @@ static int __device_suspend(struct device *dev, pm_message_t state, bool async)
goto End;
}
+ if (dev->type && dev->type->pm) {
+ pm_dev_dbg(dev, state, "type ");
+ error = pm_op(dev, dev->type->pm, state);
+ goto Domain;
+ }
+
if (dev->class) {
if (dev->class->pm) {
pm_dev_dbg(dev, state, "class ");
error = pm_op(dev, dev->class->pm, state);
+ goto Domain;
} else if (dev->class->suspend) {
pm_dev_dbg(dev, state, "legacy class ");
error = legacy_suspend(dev, state, dev->class->suspend);
+ goto Domain;
}
- if (error)
- goto End;
- }
-
- if (dev->type) {
- if (dev->type->pm) {
- pm_dev_dbg(dev, state, "type ");
- error = pm_op(dev, dev->type->pm, state);
- }
- if (error)
- goto End;
}
if (dev->bus) {
@@ -867,6 +868,12 @@ static int __device_suspend(struct device *dev, pm_message_t state, bool async)
}
}
+ Domain:
+ if (!error && dev->pwr_domain) {
+ pm_dev_dbg(dev, state, "power domain ");
+ pm_op(dev, &dev->pwr_domain->ops, state);
+ }
+
End:
device_unlock(dev);
complete_all(&dev->power.completion);
@@ -957,27 +964,34 @@ static int device_prepare(struct device *dev, pm_message_t state)
device_lock(dev);
- if (dev->bus && dev->bus->pm && dev->bus->pm->prepare) {
+ if (dev->type && dev->type->pm) {
+ pm_dev_dbg(dev, state, "preparing type ");
+ if (dev->type->pm->prepare)
+ error = dev->type->pm->prepare(dev);
+ suspend_report_result(dev->type->pm->prepare, error);
+ if (error)
+ goto End;
+ } else if (dev->class && dev->class->pm) {
+ pm_dev_dbg(dev, state, "preparing class ");
+ if (dev->class->pm->prepare)
+ error = dev->class->pm->prepare(dev);
+ suspend_report_result(dev->class->pm->prepare, error);
+ if (error)
+ goto End;
+ } else if (dev->bus && dev->bus->pm) {
pm_dev_dbg(dev, state, "preparing ");
- error = dev->bus->pm->prepare(dev);
+ if (dev->bus->pm->prepare)
+ error = dev->bus->pm->prepare(dev);
suspend_report_result(dev->bus->pm->prepare, error);
if (error)
goto End;
}
- if (dev->type && dev->type->pm && dev->type->pm->prepare) {
- pm_dev_dbg(dev, state, "preparing type ");
- error = dev->type->pm->prepare(dev);
- suspend_report_result(dev->type->pm->prepare, error);
- if (error)
- goto End;
+ if (dev->pwr_domain && dev->pwr_domain->ops.prepare) {
+ pm_dev_dbg(dev, state, "preparing power domain ");
+ dev->pwr_domain->ops.prepare(dev);
}
- if (dev->class && dev->class->pm && dev->class->pm->prepare) {
- pm_dev_dbg(dev, state, "preparing class ");
- error = dev->class->pm->prepare(dev);
- suspend_report_result(dev->class->pm->prepare, error);
- }
End:
device_unlock(dev);
@@ -1005,12 +1019,9 @@ static int dpm_prepare(pm_message_t state)
if (pm_runtime_barrier(dev) && device_may_wakeup(dev))
pm_wakeup_event(dev, 0);
- if (pm_wakeup_pending()) {
- pm_runtime_put_sync(dev);
- error = -EBUSY;
- } else {
- error = device_prepare(dev, state);
- }
+ pm_runtime_put_sync(dev);
+ error = pm_wakeup_pending() ?
+ -EBUSY : device_prepare(dev, state);
mutex_lock(&dpm_list_mtx);
if (error) {
diff --git a/drivers/base/power/opp.c b/drivers/base/power/opp.c
index 2bb9b4cf59d7..56a6899f5e9e 100644
--- a/drivers/base/power/opp.c
+++ b/drivers/base/power/opp.c
@@ -222,7 +222,7 @@ int opp_get_opp_count(struct device *dev)
* opp_find_freq_exact() - search for an exact frequency
* @dev: device for which we do this operation
* @freq: frequency to search for
- * @is_available: true/false - match for available opp
+ * @available: true/false - match for available opp
*
* Searches for exact match in the opp list and returns pointer to the matching
* opp if found, else returns ERR_PTR in case of error and should be handled
diff --git a/drivers/base/power/power.h b/drivers/base/power/power.h
index 698dde742587..f2a25f18fde7 100644
--- a/drivers/base/power/power.h
+++ b/drivers/base/power/power.h
@@ -58,19 +58,18 @@ static inline void device_pm_move_last(struct device *dev) {}
* sysfs.c
*/
-extern int dpm_sysfs_add(struct device *);
-extern void dpm_sysfs_remove(struct device *);
-extern void rpm_sysfs_remove(struct device *);
+extern int dpm_sysfs_add(struct device *dev);
+extern void dpm_sysfs_remove(struct device *dev);
+extern void rpm_sysfs_remove(struct device *dev);
+extern int wakeup_sysfs_add(struct device *dev);
+extern void wakeup_sysfs_remove(struct device *dev);
#else /* CONFIG_PM */
-static inline int dpm_sysfs_add(struct device *dev)
-{
- return 0;
-}
-
-static inline void dpm_sysfs_remove(struct device *dev)
-{
-}
+static inline int dpm_sysfs_add(struct device *dev) { return 0; }
+static inline void dpm_sysfs_remove(struct device *dev) {}
+static inline void rpm_sysfs_remove(struct device *dev) {}
+static inline int wakeup_sysfs_add(struct device *dev) { return 0; }
+static inline void wakeup_sysfs_remove(struct device *dev) {}
#endif
diff --git a/drivers/base/power/runtime.c b/drivers/base/power/runtime.c
index 42615b419dfb..54597c859ecb 100644
--- a/drivers/base/power/runtime.c
+++ b/drivers/base/power/runtime.c
@@ -168,6 +168,7 @@ static int rpm_check_suspend_allowed(struct device *dev)
static int rpm_idle(struct device *dev, int rpmflags)
{
int (*callback)(struct device *);
+ int (*domain_callback)(struct device *);
int retval;
retval = rpm_check_suspend_allowed(dev);
@@ -213,19 +214,28 @@ static int rpm_idle(struct device *dev, int rpmflags)
dev->power.idle_notification = true;
- if (dev->bus && dev->bus->pm && dev->bus->pm->runtime_idle)
- callback = dev->bus->pm->runtime_idle;
- else if (dev->type && dev->type->pm && dev->type->pm->runtime_idle)
+ if (dev->type && dev->type->pm)
callback = dev->type->pm->runtime_idle;
else if (dev->class && dev->class->pm)
callback = dev->class->pm->runtime_idle;
+ else if (dev->bus && dev->bus->pm)
+ callback = dev->bus->pm->runtime_idle;
else
callback = NULL;
- if (callback) {
+ if (dev->pwr_domain)
+ domain_callback = dev->pwr_domain->ops.runtime_idle;
+ else
+ domain_callback = NULL;
+
+ if (callback || domain_callback) {
spin_unlock_irq(&dev->power.lock);
- callback(dev);
+ if (domain_callback)
+ retval = domain_callback(dev);
+
+ if (!retval && callback)
+ callback(dev);
spin_lock_irq(&dev->power.lock);
}
@@ -372,12 +382,12 @@ static int rpm_suspend(struct device *dev, int rpmflags)
__update_runtime_status(dev, RPM_SUSPENDING);
- if (dev->bus && dev->bus->pm && dev->bus->pm->runtime_suspend)
- callback = dev->bus->pm->runtime_suspend;
- else if (dev->type && dev->type->pm && dev->type->pm->runtime_suspend)
+ if (dev->type && dev->type->pm)
callback = dev->type->pm->runtime_suspend;
else if (dev->class && dev->class->pm)
callback = dev->class->pm->runtime_suspend;
+ else if (dev->bus && dev->bus->pm)
+ callback = dev->bus->pm->runtime_suspend;
else
callback = NULL;
@@ -390,6 +400,8 @@ static int rpm_suspend(struct device *dev, int rpmflags)
else
pm_runtime_cancel_pending(dev);
} else {
+ if (dev->pwr_domain)
+ rpm_callback(dev->pwr_domain->ops.runtime_suspend, dev);
no_callback:
__update_runtime_status(dev, RPM_SUSPENDED);
pm_runtime_deactivate_timer(dev);
@@ -569,12 +581,15 @@ static int rpm_resume(struct device *dev, int rpmflags)
__update_runtime_status(dev, RPM_RESUMING);
- if (dev->bus && dev->bus->pm && dev->bus->pm->runtime_resume)
- callback = dev->bus->pm->runtime_resume;
- else if (dev->type && dev->type->pm && dev->type->pm->runtime_resume)
+ if (dev->pwr_domain)
+ rpm_callback(dev->pwr_domain->ops.runtime_resume, dev);
+
+ if (dev->type && dev->type->pm)
callback = dev->type->pm->runtime_resume;
else if (dev->class && dev->class->pm)
callback = dev->class->pm->runtime_resume;
+ else if (dev->bus && dev->bus->pm)
+ callback = dev->bus->pm->runtime_resume;
else
callback = NULL;
diff --git a/drivers/base/power/sysfs.c b/drivers/base/power/sysfs.c
index 0b1e46bf3e56..fff49bee781d 100644
--- a/drivers/base/power/sysfs.c
+++ b/drivers/base/power/sysfs.c
@@ -431,26 +431,18 @@ static ssize_t async_store(struct device *dev, struct device_attribute *attr,
static DEVICE_ATTR(async, 0644, async_show, async_store);
#endif /* CONFIG_PM_ADVANCED_DEBUG */
-static struct attribute * power_attrs[] = {
- &dev_attr_wakeup.attr,
-#ifdef CONFIG_PM_SLEEP
- &dev_attr_wakeup_count.attr,
- &dev_attr_wakeup_active_count.attr,
- &dev_attr_wakeup_hit_count.attr,
- &dev_attr_wakeup_active.attr,
- &dev_attr_wakeup_total_time_ms.attr,
- &dev_attr_wakeup_max_time_ms.attr,
- &dev_attr_wakeup_last_time_ms.attr,
-#endif
+static struct attribute *power_attrs[] = {
#ifdef CONFIG_PM_ADVANCED_DEBUG
+#ifdef CONFIG_PM_SLEEP
&dev_attr_async.attr,
+#endif
#ifdef CONFIG_PM_RUNTIME
&dev_attr_runtime_status.attr,
&dev_attr_runtime_usage.attr,
&dev_attr_runtime_active_kids.attr,
&dev_attr_runtime_enabled.attr,
#endif
-#endif
+#endif /* CONFIG_PM_ADVANCED_DEBUG */
NULL,
};
static struct attribute_group pm_attr_group = {
@@ -458,9 +450,26 @@ static struct attribute_group pm_attr_group = {
.attrs = power_attrs,
};
-#ifdef CONFIG_PM_RUNTIME
+static struct attribute *wakeup_attrs[] = {
+#ifdef CONFIG_PM_SLEEP
+ &dev_attr_wakeup.attr,
+ &dev_attr_wakeup_count.attr,
+ &dev_attr_wakeup_active_count.attr,
+ &dev_attr_wakeup_hit_count.attr,
+ &dev_attr_wakeup_active.attr,
+ &dev_attr_wakeup_total_time_ms.attr,
+ &dev_attr_wakeup_max_time_ms.attr,
+ &dev_attr_wakeup_last_time_ms.attr,
+#endif
+ NULL,
+};
+static struct attribute_group pm_wakeup_attr_group = {
+ .name = power_group_name,
+ .attrs = wakeup_attrs,
+};
static struct attribute *runtime_attrs[] = {
+#ifdef CONFIG_PM_RUNTIME
#ifndef CONFIG_PM_ADVANCED_DEBUG
&dev_attr_runtime_status.attr,
#endif
@@ -468,6 +477,7 @@ static struct attribute *runtime_attrs[] = {
&dev_attr_runtime_suspended_time.attr,
&dev_attr_runtime_active_time.attr,
&dev_attr_autosuspend_delay_ms.attr,
+#endif /* CONFIG_PM_RUNTIME */
NULL,
};
static struct attribute_group pm_runtime_attr_group = {
@@ -480,35 +490,49 @@ int dpm_sysfs_add(struct device *dev)
int rc;
rc = sysfs_create_group(&dev->kobj, &pm_attr_group);
- if (rc == 0 && !dev->power.no_callbacks) {
+ if (rc)
+ return rc;
+
+ if (pm_runtime_callbacks_present(dev)) {
rc = sysfs_merge_group(&dev->kobj, &pm_runtime_attr_group);
if (rc)
- sysfs_remove_group(&dev->kobj, &pm_attr_group);
+ goto err_out;
+ }
+
+ if (device_can_wakeup(dev)) {
+ rc = sysfs_merge_group(&dev->kobj, &pm_wakeup_attr_group);
+ if (rc) {
+ if (pm_runtime_callbacks_present(dev))
+ sysfs_unmerge_group(&dev->kobj,
+ &pm_runtime_attr_group);
+ goto err_out;
+ }
}
+ return 0;
+
+ err_out:
+ sysfs_remove_group(&dev->kobj, &pm_attr_group);
return rc;
}
-void rpm_sysfs_remove(struct device *dev)
+int wakeup_sysfs_add(struct device *dev)
{
- sysfs_unmerge_group(&dev->kobj, &pm_runtime_attr_group);
+ return sysfs_merge_group(&dev->kobj, &pm_wakeup_attr_group);
}
-void dpm_sysfs_remove(struct device *dev)
+void wakeup_sysfs_remove(struct device *dev)
{
- rpm_sysfs_remove(dev);
- sysfs_remove_group(&dev->kobj, &pm_attr_group);
+ sysfs_unmerge_group(&dev->kobj, &pm_wakeup_attr_group);
}
-#else /* CONFIG_PM_RUNTIME */
-
-int dpm_sysfs_add(struct device * dev)
+void rpm_sysfs_remove(struct device *dev)
{
- return sysfs_create_group(&dev->kobj, &pm_attr_group);
+ sysfs_unmerge_group(&dev->kobj, &pm_runtime_attr_group);
}
-void dpm_sysfs_remove(struct device * dev)
+void dpm_sysfs_remove(struct device *dev)
{
+ rpm_sysfs_remove(dev);
+ sysfs_unmerge_group(&dev->kobj, &pm_wakeup_attr_group);
sysfs_remove_group(&dev->kobj, &pm_attr_group);
}
-
-#endif
diff --git a/drivers/base/power/trace.c b/drivers/base/power/trace.c
index 9f4258df4cfd..c80e138b62fe 100644
--- a/drivers/base/power/trace.c
+++ b/drivers/base/power/trace.c
@@ -112,7 +112,7 @@ static unsigned int read_magic_time(void)
unsigned int val;
get_rtc_time(&time);
- printk("Time: %2d:%02d:%02d Date: %02d/%02d/%02d\n",
+ pr_info("Time: %2d:%02d:%02d Date: %02d/%02d/%02d\n",
time.tm_hour, time.tm_min, time.tm_sec,
time.tm_mon + 1, time.tm_mday, time.tm_year % 100);
val = time.tm_year; /* 100 years */
@@ -179,7 +179,7 @@ static int show_file_hash(unsigned int value)
unsigned int hash = hash_string(lineno, file, FILEHASH);
if (hash != value)
continue;
- printk(" hash matches %s:%u\n", file, lineno);
+ pr_info(" hash matches %s:%u\n", file, lineno);
match++;
}
return match;
@@ -255,7 +255,7 @@ static int late_resume_init(void)
val = val / FILEHASH;
dev = val /* % DEVHASH */;
- printk(" Magic number: %d:%d:%d\n", user, file, dev);
+ pr_info(" Magic number: %d:%d:%d\n", user, file, dev);
show_file_hash(file);
show_dev_hash(dev);
return 0;
diff --git a/drivers/base/power/wakeup.c b/drivers/base/power/wakeup.c
index 8ec406d8f548..4573c83df6dd 100644
--- a/drivers/base/power/wakeup.c
+++ b/drivers/base/power/wakeup.c
@@ -24,12 +24,26 @@
*/
bool events_check_enabled;
-/* The counter of registered wakeup events. */
-static atomic_t event_count = ATOMIC_INIT(0);
-/* A preserved old value of event_count. */
+/*
+ * Combined counters of registered wakeup events and wakeup events in progress.
+ * They need to be modified together atomically, so it's better to use one
+ * atomic variable to hold them both.
+ */
+static atomic_t combined_event_count = ATOMIC_INIT(0);
+
+#define IN_PROGRESS_BITS (sizeof(int) * 4)
+#define MAX_IN_PROGRESS ((1 << IN_PROGRESS_BITS) - 1)
+
+static void split_counters(unsigned int *cnt, unsigned int *inpr)
+{
+ unsigned int comb = atomic_read(&combined_event_count);
+
+ *cnt = (comb >> IN_PROGRESS_BITS);
+ *inpr = comb & MAX_IN_PROGRESS;
+}
+
+/* A preserved old value of the events counter. */
static unsigned int saved_count;
-/* The counter of wakeup events being processed. */
-static atomic_t events_in_progress = ATOMIC_INIT(0);
static DEFINE_SPINLOCK(events_lock);
@@ -228,6 +242,35 @@ int device_wakeup_disable(struct device *dev)
EXPORT_SYMBOL_GPL(device_wakeup_disable);
/**
+ * device_set_wakeup_capable - Set/reset device wakeup capability flag.
+ * @dev: Device to handle.
+ * @capable: Whether or not @dev is capable of waking up the system from sleep.
+ *
+ * If @capable is set, set the @dev's power.can_wakeup flag and add its
+ * wakeup-related attributes to sysfs. Otherwise, unset the @dev's
+ * power.can_wakeup flag and remove its wakeup-related attributes from sysfs.
+ *
+ * This function may sleep and it can't be called from any context where
+ * sleeping is not allowed.
+ */
+void device_set_wakeup_capable(struct device *dev, bool capable)
+{
+ if (!!dev->power.can_wakeup == !!capable)
+ return;
+
+ if (device_is_registered(dev)) {
+ if (capable) {
+ if (wakeup_sysfs_add(dev))
+ return;
+ } else {
+ wakeup_sysfs_remove(dev);
+ }
+ }
+ dev->power.can_wakeup = capable;
+}
+EXPORT_SYMBOL_GPL(device_set_wakeup_capable);
+
+/**
* device_init_wakeup - Device wakeup initialization.
* @dev: Device to handle.
* @enable: Whether or not to enable @dev as a wakeup device.
@@ -307,7 +350,8 @@ static void wakeup_source_activate(struct wakeup_source *ws)
ws->timer_expires = jiffies;
ws->last_time = ktime_get();
- atomic_inc(&events_in_progress);
+ /* Increment the counter of events in progress. */
+ atomic_inc(&combined_event_count);
}
/**
@@ -394,14 +438,10 @@ static void wakeup_source_deactivate(struct wakeup_source *ws)
del_timer(&ws->timer);
/*
- * event_count has to be incremented before events_in_progress is
- * modified, so that the callers of pm_check_wakeup_events() and
- * pm_save_wakeup_count() don't see the old value of event_count and
- * events_in_progress equal to zero at the same time.
+ * Increment the counter of registered wakeup events and decrement the
+ * couter of wakeup events in progress simultaneously.
*/
- atomic_inc(&event_count);
- smp_mb__before_atomic_dec();
- atomic_dec(&events_in_progress);
+ atomic_add(MAX_IN_PROGRESS, &combined_event_count);
}
/**
@@ -556,8 +596,10 @@ bool pm_wakeup_pending(void)
spin_lock_irqsave(&events_lock, flags);
if (events_check_enabled) {
- ret = ((unsigned int)atomic_read(&event_count) != saved_count)
- || atomic_read(&events_in_progress);
+ unsigned int cnt, inpr;
+
+ split_counters(&cnt, &inpr);
+ ret = (cnt != saved_count || inpr > 0);
events_check_enabled = !ret;
}
spin_unlock_irqrestore(&events_lock, flags);
@@ -573,25 +615,25 @@ bool pm_wakeup_pending(void)
* Store the number of registered wakeup events at the address in @count. Block
* if the current number of wakeup events being processed is nonzero.
*
- * Return false if the wait for the number of wakeup events being processed to
+ * Return 'false' if the wait for the number of wakeup events being processed to
* drop down to zero has been interrupted by a signal (and the current number
- * of wakeup events being processed is still nonzero). Otherwise return true.
+ * of wakeup events being processed is still nonzero). Otherwise return 'true'.
*/
bool pm_get_wakeup_count(unsigned int *count)
{
- bool ret;
-
- if (capable(CAP_SYS_ADMIN))
- events_check_enabled = false;
+ unsigned int cnt, inpr;
- while (atomic_read(&events_in_progress) && !signal_pending(current)) {
+ for (;;) {
+ split_counters(&cnt, &inpr);
+ if (inpr == 0 || signal_pending(current))
+ break;
pm_wakeup_update_hit_counts();
schedule_timeout_interruptible(msecs_to_jiffies(TIMEOUT));
}
- ret = !atomic_read(&events_in_progress);
- *count = atomic_read(&event_count);
- return ret;
+ split_counters(&cnt, &inpr);
+ *count = cnt;
+ return !inpr;
}
/**
@@ -600,24 +642,25 @@ bool pm_get_wakeup_count(unsigned int *count)
*
* If @count is equal to the current number of registered wakeup events and the
* current number of wakeup events being processed is zero, store @count as the
- * old number of registered wakeup events to be used by pm_check_wakeup_events()
- * and return true. Otherwise return false.
+ * old number of registered wakeup events for pm_check_wakeup_events(), enable
+ * wakeup events detection and return 'true'. Otherwise disable wakeup events
+ * detection and return 'false'.
*/
bool pm_save_wakeup_count(unsigned int count)
{
- bool ret = false;
+ unsigned int cnt, inpr;
+ events_check_enabled = false;
spin_lock_irq(&events_lock);
- if (count == (unsigned int)atomic_read(&event_count)
- && !atomic_read(&events_in_progress)) {
+ split_counters(&cnt, &inpr);
+ if (cnt == count && inpr == 0) {
saved_count = count;
events_check_enabled = true;
- ret = true;
}
spin_unlock_irq(&events_lock);
- if (!ret)
+ if (!events_check_enabled)
pm_wakeup_update_hit_counts();
- return ret;
+ return events_check_enabled;
}
static struct dentry *wakeup_sources_stats_dentry;
diff --git a/drivers/base/syscore.c b/drivers/base/syscore.c
new file mode 100644
index 000000000000..90af2943f9e4
--- /dev/null
+++ b/drivers/base/syscore.c
@@ -0,0 +1,117 @@
+/*
+ * syscore.c - Execution of system core operations.
+ *
+ * Copyright (C) 2011 Rafael J. Wysocki <rjw@sisk.pl>, Novell Inc.
+ *
+ * This file is released under the GPLv2.
+ */
+
+#include <linux/syscore_ops.h>
+#include <linux/mutex.h>
+#include <linux/module.h>
+
+static LIST_HEAD(syscore_ops_list);
+static DEFINE_MUTEX(syscore_ops_lock);
+
+/**
+ * register_syscore_ops - Register a set of system core operations.
+ * @ops: System core operations to register.
+ */
+void register_syscore_ops(struct syscore_ops *ops)
+{
+ mutex_lock(&syscore_ops_lock);
+ list_add_tail(&ops->node, &syscore_ops_list);
+ mutex_unlock(&syscore_ops_lock);
+}
+EXPORT_SYMBOL_GPL(register_syscore_ops);
+
+/**
+ * unregister_syscore_ops - Unregister a set of system core operations.
+ * @ops: System core operations to unregister.
+ */
+void unregister_syscore_ops(struct syscore_ops *ops)
+{
+ mutex_lock(&syscore_ops_lock);
+ list_del(&ops->node);
+ mutex_unlock(&syscore_ops_lock);
+}
+EXPORT_SYMBOL_GPL(unregister_syscore_ops);
+
+#ifdef CONFIG_PM_SLEEP
+/**
+ * syscore_suspend - Execute all the registered system core suspend callbacks.
+ *
+ * This function is executed with one CPU on-line and disabled interrupts.
+ */
+int syscore_suspend(void)
+{
+ struct syscore_ops *ops;
+ int ret = 0;
+
+ WARN_ONCE(!irqs_disabled(),
+ "Interrupts enabled before system core suspend.\n");
+
+ list_for_each_entry_reverse(ops, &syscore_ops_list, node)
+ if (ops->suspend) {
+ if (initcall_debug)
+ pr_info("PM: Calling %pF\n", ops->suspend);
+ ret = ops->suspend();
+ if (ret)
+ goto err_out;
+ WARN_ONCE(!irqs_disabled(),
+ "Interrupts enabled after %pF\n", ops->suspend);
+ }
+
+ return 0;
+
+ err_out:
+ pr_err("PM: System core suspend callback %pF failed.\n", ops->suspend);
+
+ list_for_each_entry_continue(ops, &syscore_ops_list, node)
+ if (ops->resume)
+ ops->resume();
+
+ return ret;
+}
+
+/**
+ * syscore_resume - Execute all the registered system core resume callbacks.
+ *
+ * This function is executed with one CPU on-line and disabled interrupts.
+ */
+void syscore_resume(void)
+{
+ struct syscore_ops *ops;
+
+ WARN_ONCE(!irqs_disabled(),
+ "Interrupts enabled before system core resume.\n");
+
+ list_for_each_entry(ops, &syscore_ops_list, node)
+ if (ops->resume) {
+ if (initcall_debug)
+ pr_info("PM: Calling %pF\n", ops->resume);
+ ops->resume();
+ WARN_ONCE(!irqs_disabled(),
+ "Interrupts enabled after %pF\n", ops->resume);
+ }
+}
+#endif /* CONFIG_PM_SLEEP */
+
+/**
+ * syscore_shutdown - Execute all the registered system core shutdown callbacks.
+ */
+void syscore_shutdown(void)
+{
+ struct syscore_ops *ops;
+
+ mutex_lock(&syscore_ops_lock);
+
+ list_for_each_entry_reverse(ops, &syscore_ops_list, node)
+ if (ops->shutdown) {
+ if (initcall_debug)
+ pr_info("PM: Calling %pF\n", ops->shutdown);
+ ops->shutdown();
+ }
+
+ mutex_unlock(&syscore_ops_lock);
+}
diff --git a/drivers/net/e1000e/netdev.c b/drivers/net/e1000e/netdev.c
index 2e5022849f18..6d513a383340 100644
--- a/drivers/net/e1000e/netdev.c
+++ b/drivers/net/e1000e/netdev.c
@@ -5338,7 +5338,7 @@ void e1000e_disable_aspm(struct pci_dev *pdev, u16 state)
__e1000e_disable_aspm(pdev, state);
}
-#ifdef CONFIG_PM_OPS
+#ifdef CONFIG_PM
static bool e1000e_pm_ready(struct e1000_adapter *adapter)
{
return !!adapter->tx_ring->buffer_info;
@@ -5489,7 +5489,7 @@ static int e1000_runtime_resume(struct device *dev)
return __e1000_resume(pdev);
}
#endif /* CONFIG_PM_RUNTIME */
-#endif /* CONFIG_PM_OPS */
+#endif /* CONFIG_PM */
static void e1000_shutdown(struct pci_dev *pdev)
{
@@ -6196,7 +6196,7 @@ static DEFINE_PCI_DEVICE_TABLE(e1000_pci_tbl) = {
};
MODULE_DEVICE_TABLE(pci, e1000_pci_tbl);
-#ifdef CONFIG_PM_OPS
+#ifdef CONFIG_PM
static const struct dev_pm_ops e1000_pm_ops = {
SET_SYSTEM_SLEEP_PM_OPS(e1000_suspend, e1000_resume)
SET_RUNTIME_PM_OPS(e1000_runtime_suspend,
@@ -6210,7 +6210,7 @@ static struct pci_driver e1000_driver = {
.id_table = e1000_pci_tbl,
.probe = e1000_probe,
.remove = __devexit_p(e1000_remove),
-#ifdef CONFIG_PM_OPS
+#ifdef CONFIG_PM
.driver.pm = &e1000_pm_ops,
#endif
.shutdown = e1000_shutdown,
diff --git a/drivers/net/pch_gbe/pch_gbe_main.c b/drivers/net/pch_gbe/pch_gbe_main.c
index b99e90aca37d..8c66e22c3a0a 100644
--- a/drivers/net/pch_gbe/pch_gbe_main.c
+++ b/drivers/net/pch_gbe/pch_gbe_main.c
@@ -2446,7 +2446,7 @@ static struct pci_driver pch_gbe_pcidev = {
.id_table = pch_gbe_pcidev_id,
.probe = pch_gbe_probe,
.remove = pch_gbe_remove,
-#ifdef CONFIG_PM_OPS
+#ifdef CONFIG_PM
.driver.pm = &pch_gbe_pm_ops,
#endif
.shutdown = pch_gbe_shutdown,
diff --git a/drivers/pci/pci-driver.c b/drivers/pci/pci-driver.c
index 88246dd46452..d86ea8b01137 100644
--- a/drivers/pci/pci-driver.c
+++ b/drivers/pci/pci-driver.c
@@ -431,7 +431,7 @@ static void pci_device_shutdown(struct device *dev)
pci_msix_shutdown(pci_dev);
}
-#ifdef CONFIG_PM_OPS
+#ifdef CONFIG_PM
/* Auxiliary functions used for system resume and run-time resume. */
@@ -1059,7 +1059,7 @@ static int pci_pm_runtime_idle(struct device *dev)
#endif /* !CONFIG_PM_RUNTIME */
-#ifdef CONFIG_PM_OPS
+#ifdef CONFIG_PM
const struct dev_pm_ops pci_dev_pm_ops = {
.prepare = pci_pm_prepare,
diff --git a/drivers/scsi/Makefile b/drivers/scsi/Makefile
index 2e9a87e8e7d8..ef6de669424b 100644
--- a/drivers/scsi/Makefile
+++ b/drivers/scsi/Makefile
@@ -165,7 +165,7 @@ scsi_mod-$(CONFIG_SCSI_NETLINK) += scsi_netlink.o
scsi_mod-$(CONFIG_SYSCTL) += scsi_sysctl.o
scsi_mod-$(CONFIG_SCSI_PROC_FS) += scsi_proc.o
scsi_mod-y += scsi_trace.o
-scsi_mod-$(CONFIG_PM_OPS) += scsi_pm.o
+scsi_mod-$(CONFIG_PM) += scsi_pm.o
scsi_tgt-y += scsi_tgt_lib.o scsi_tgt_if.o
diff --git a/drivers/scsi/scsi_priv.h b/drivers/scsi/scsi_priv.h
index b4056d14f812..342ee1a9c41d 100644
--- a/drivers/scsi/scsi_priv.h
+++ b/drivers/scsi/scsi_priv.h
@@ -146,7 +146,7 @@ static inline void scsi_netlink_exit(void) {}
#endif
/* scsi_pm.c */
-#ifdef CONFIG_PM_OPS
+#ifdef CONFIG_PM
extern const struct dev_pm_ops scsi_bus_pm_ops;
#endif
#ifdef CONFIG_PM_RUNTIME
diff --git a/drivers/scsi/scsi_sysfs.c b/drivers/scsi/scsi_sysfs.c
index 490ce213204e..e44ff64233fd 100644
--- a/drivers/scsi/scsi_sysfs.c
+++ b/drivers/scsi/scsi_sysfs.c
@@ -383,7 +383,7 @@ struct bus_type scsi_bus_type = {
.name = "scsi",
.match = scsi_bus_match,
.uevent = scsi_bus_uevent,
-#ifdef CONFIG_PM_OPS
+#ifdef CONFIG_PM
.pm = &scsi_bus_pm_ops,
#endif
};
diff --git a/drivers/usb/core/hcd-pci.c b/drivers/usb/core/hcd-pci.c
index f71e8e307e0f..64a035ba2eab 100644
--- a/drivers/usb/core/hcd-pci.c
+++ b/drivers/usb/core/hcd-pci.c
@@ -335,7 +335,7 @@ void usb_hcd_pci_shutdown(struct pci_dev *dev)
}
EXPORT_SYMBOL_GPL(usb_hcd_pci_shutdown);
-#ifdef CONFIG_PM_OPS
+#ifdef CONFIG_PM
#ifdef CONFIG_PPC_PMAC
static void powermac_set_asic(struct pci_dev *pci_dev, int enable)
@@ -580,4 +580,4 @@ const struct dev_pm_ops usb_hcd_pci_pm_ops = {
};
EXPORT_SYMBOL_GPL(usb_hcd_pci_pm_ops);
-#endif /* CONFIG_PM_OPS */
+#endif /* CONFIG_PM */
diff --git a/drivers/usb/core/hub.c b/drivers/usb/core/hub.c
index 0f299b7aad60..19d3435e6140 100644
--- a/drivers/usb/core/hub.c
+++ b/drivers/usb/core/hub.c
@@ -1465,6 +1465,7 @@ void usb_set_device_state(struct usb_device *udev,
enum usb_device_state new_state)
{
unsigned long flags;
+ int wakeup = -1;
spin_lock_irqsave(&device_state_lock, flags);
if (udev->state == USB_STATE_NOTATTACHED)
@@ -1479,11 +1480,10 @@ void usb_set_device_state(struct usb_device *udev,
|| new_state == USB_STATE_SUSPENDED)
; /* No change to wakeup settings */
else if (new_state == USB_STATE_CONFIGURED)
- device_set_wakeup_capable(&udev->dev,
- (udev->actconfig->desc.bmAttributes
- & USB_CONFIG_ATT_WAKEUP));
+ wakeup = udev->actconfig->desc.bmAttributes
+ & USB_CONFIG_ATT_WAKEUP;
else
- device_set_wakeup_capable(&udev->dev, 0);
+ wakeup = 0;
}
if (udev->state == USB_STATE_SUSPENDED &&
new_state != USB_STATE_SUSPENDED)
@@ -1495,6 +1495,8 @@ void usb_set_device_state(struct usb_device *udev,
} else
recursively_mark_NOTATTACHED(udev);
spin_unlock_irqrestore(&device_state_lock, flags);
+ if (wakeup >= 0)
+ device_set_wakeup_capable(&udev->dev, wakeup);
}
EXPORT_SYMBOL_GPL(usb_set_device_state);
generated by cgit v1.2.3 (git 2.25.1) at 2024-11-19 04:18:18 +0000