PM: Add flag for devices capable of generating run-time wake-up events

Apparently, there are devices that can wake up the system from sleep
states and yet are incapable of generating wake-up events at run
time.  Thus, introduce a flag indicating if given device is capable
of generating run-time wake-up events.

Signed-off-by: Rafael J. Wysocki <rjw@sisk.pl>

1 files changed, 5 insertions, 3 deletions

diff --git a/include/linux/pm.h b/include/linux/pm.h
index 3b7e04b95bd..0d65934246a 100644
--- a/include/linux/pm.h
+++ b/include/linux/pm.h
@@ -178,9 +178,10 @@ typedef struct pm_message {
  *	This need not mean that the device should be put into a low power state.
  *	For example, if the device is behind a link which is about to be turned
  *	off, the device may remain at full power.  If the device does go to low
- *	power and if device_may_wakeup(dev) is true, remote wake-up (i.e., a
- *	hardware mechanism allowing the device to request a change of its power
- *	state, such as PCI PME) should be enabled for it.
+ *	power and is capable of generating run-time wake-up events, remote
+ *	wake-up (i.e., a hardware mechanism allowing the device to request a
+ *	change of its power state via a wake-up event, such as PCI PME) should
+ *	be enabled for it.
  *
  * @runtime_resume: Put the device into the fully active state in response to a
  *	wake-up event generated by hardware or at the request of software.  If
@@ -428,6 +429,7 @@ struct dev_pm_info {
 	unsigned int		idle_notification:1;
 	unsigned int		request_pending:1;
 	unsigned int		deferred_resume:1;
+	unsigned int		run_wake:1;
 	enum rpm_request	request;
 	enum rpm_status		runtime_status;
 	int			runtime_error;