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-rw-r--r--drivers/base/power/main.c17
-rw-r--r--drivers/usb/core/driver.c7
-rw-r--r--include/linux/device.h4
-rw-r--r--include/linux/pm.h43
4 files changed, 12 insertions, 59 deletions
diff --git a/drivers/base/power/main.c b/drivers/base/power/main.c
index bb5c8cb..a90480b 100644
--- a/drivers/base/power/main.c
+++ b/drivers/base/power/main.c
@@ -63,7 +63,7 @@ static int async_error;
*/
void device_pm_init(struct device *dev)
{
- dev->power.status = DPM_ON;
+ dev->power.in_suspend = false;
init_completion(&dev->power.completion);
complete_all(&dev->power.completion);
dev->power.wakeup = NULL;
@@ -98,7 +98,7 @@ void device_pm_add(struct device *dev)
kobject_name(&dev->kobj));
mutex_lock(&dpm_list_mtx);
if (dev->parent) {
- if (dev->parent->power.status >= DPM_SUSPENDING)
+ if (dev->parent->power.in_suspend)
dev_warn(dev, "parent %s should not be sleeping\n",
dev_name(dev->parent));
} else if (transition_started) {
@@ -488,7 +488,6 @@ void dpm_resume_noirq(pm_message_t state)
int error;
get_device(dev);
- dev->power.status = DPM_OFF;
list_move_tail(&dev->power.entry, &dpm_suspended_list);
mutex_unlock(&dpm_list_mtx);
@@ -541,7 +540,7 @@ static int device_resume(struct device *dev, pm_message_t state, bool async)
dpm_wait(dev->parent, async);
device_lock(dev);
- dev->power.status = DPM_RESUMING;
+ dev->power.in_suspend = false;
if (dev->bus) {
if (dev->bus->pm) {
@@ -690,7 +689,7 @@ static void dpm_complete(pm_message_t state)
struct device *dev = to_device(dpm_prepared_list.prev);
get_device(dev);
- dev->power.status = DPM_ON;
+ dev->power.in_suspend = false;
list_move(&dev->power.entry, &list);
mutex_unlock(&dpm_list_mtx);
@@ -806,7 +805,6 @@ int dpm_suspend_noirq(pm_message_t state)
put_device(dev);
break;
}
- dev->power.status = DPM_OFF_IRQ;
if (!list_empty(&dev->power.entry))
list_move(&dev->power.entry, &dpm_noirq_list);
put_device(dev);
@@ -894,9 +892,6 @@ static int __device_suspend(struct device *dev, pm_message_t state, bool async)
}
}
- if (!error)
- dev->power.status = DPM_OFF;
-
End:
device_unlock(dev);
complete_all(&dev->power.completion);
@@ -1030,7 +1025,6 @@ static int dpm_prepare(pm_message_t state)
struct device *dev = to_device(dpm_list.next);
get_device(dev);
- dev->power.status = DPM_PREPARING;
mutex_unlock(&dpm_list_mtx);
pm_runtime_get_noresume(dev);
@@ -1046,7 +1040,6 @@ static int dpm_prepare(pm_message_t state)
mutex_lock(&dpm_list_mtx);
if (error) {
- dev->power.status = DPM_ON;
if (error == -EAGAIN) {
put_device(dev);
error = 0;
@@ -1058,7 +1051,7 @@ static int dpm_prepare(pm_message_t state)
put_device(dev);
break;
}
- dev->power.status = DPM_SUSPENDING;
+ dev->power.in_suspend = true;
if (!list_empty(&dev->power.entry))
list_move_tail(&dev->power.entry, &dpm_prepared_list);
put_device(dev);
diff --git a/drivers/usb/core/driver.c b/drivers/usb/core/driver.c
index c0e60fb..4ec5022 100644
--- a/drivers/usb/core/driver.c
+++ b/drivers/usb/core/driver.c
@@ -376,7 +376,7 @@ static int usb_unbind_interface(struct device *dev)
* Just re-enable it without affecting the endpoint toggles.
*/
usb_enable_interface(udev, intf, false);
- } else if (!error && intf->dev.power.status == DPM_ON) {
+ } else if (!error && !intf->dev.power.in_suspend) {
r = usb_set_interface(udev, intf->altsetting[0].
desc.bInterfaceNumber, 0);
if (r < 0)
@@ -961,7 +961,7 @@ void usb_rebind_intf(struct usb_interface *intf)
}
/* Try to rebind the interface */
- if (intf->dev.power.status == DPM_ON) {
+ if (!intf->dev.power.in_suspend) {
intf->needs_binding = 0;
rc = device_attach(&intf->dev);
if (rc < 0)
@@ -1108,8 +1108,7 @@ static int usb_resume_interface(struct usb_device *udev,
if (intf->condition == USB_INTERFACE_UNBOUND) {
/* Carry out a deferred switch to altsetting 0 */
- if (intf->needs_altsetting0 &&
- intf->dev.power.status == DPM_ON) {
+ if (intf->needs_altsetting0 && !intf->dev.power.in_suspend) {
usb_set_interface(udev, intf->altsetting[0].
desc.bInterfaceNumber, 0);
intf->needs_altsetting0 = 0;
diff --git a/include/linux/device.h b/include/linux/device.h
index dd48953..45bc8c1 100644
--- a/include/linux/device.h
+++ b/include/linux/device.h
@@ -508,13 +508,13 @@ static inline int device_is_registered(struct device *dev)
static inline void device_enable_async_suspend(struct device *dev)
{
- if (dev->power.status == DPM_ON)
+ if (!dev->power.in_suspend)
dev->power.async_suspend = true;
}
static inline void device_disable_async_suspend(struct device *dev)
{
- if (dev->power.status == DPM_ON)
+ if (!dev->power.in_suspend)
dev->power.async_suspend = false;
}
diff --git a/include/linux/pm.h b/include/linux/pm.h
index 61f2066..c1756df 100644
--- a/include/linux/pm.h
+++ b/include/linux/pm.h
@@ -367,45 +367,6 @@ extern struct dev_pm_ops generic_subsys_pm_ops;
{ .event = PM_EVENT_AUTO_RESUME, })
/**
- * Device power management states
- *
- * These state labels are used internally by the PM core to indicate the current
- * status of a device with respect to the PM core operations.
- *
- * DPM_ON Device is regarded as operational. Set this way
- * initially and when ->complete() is about to be called.
- * Also set when ->prepare() fails.
- *
- * DPM_PREPARING Device is going to be prepared for a PM transition. Set
- * when ->prepare() is about to be called.
- *
- * DPM_RESUMING Device is going to be resumed. Set when ->resume(),
- * ->thaw(), or ->restore() is about to be called.
- *
- * DPM_SUSPENDING Device has been prepared for a power transition. Set
- * when ->prepare() has just succeeded.
- *
- * DPM_OFF Device is regarded as inactive. Set immediately after
- * ->suspend(), ->freeze(), or ->poweroff() has succeeded.
- * Also set when ->resume()_noirq, ->thaw_noirq(), or
- * ->restore_noirq() is about to be called.
- *
- * DPM_OFF_IRQ Device is in a "deep sleep". Set immediately after
- * ->suspend_noirq(), ->freeze_noirq(), or
- * ->poweroff_noirq() has just succeeded.
- */
-
-enum dpm_state {
- DPM_INVALID,
- DPM_ON,
- DPM_PREPARING,
- DPM_RESUMING,
- DPM_SUSPENDING,
- DPM_OFF,
- DPM_OFF_IRQ,
-};
-
-/**
* Device run-time power management status.
*
* These status labels are used internally by the PM core to indicate the
@@ -463,8 +424,8 @@ struct wakeup_source;
struct dev_pm_info {
pm_message_t power_state;
unsigned int can_wakeup:1;
- unsigned async_suspend:1;
- enum dpm_state status; /* Owned by the PM core */
+ unsigned int async_suspend:1;
+ unsigned int in_suspend:1; /* Owned by the PM core */
spinlock_t lock;
#ifdef CONFIG_PM_SLEEP
struct list_head entry;
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