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-rw-r--r--include/linux/usb.h8
1 files changed, 8 insertions, 0 deletions
diff --git a/include/linux/usb.h b/include/linux/usb.h
index f9e4445d5b5..cfbd2bb8fa2 100644
--- a/include/linux/usb.h
+++ b/include/linux/usb.h
@@ -398,6 +398,7 @@ struct usb_device {
struct delayed_work autosuspend; /* for delayed autosuspends */
struct mutex pm_mutex; /* protects PM operations */
+ unsigned long last_busy; /* time of last use */
int autosuspend_delay; /* in jiffies */
unsigned auto_pm:1; /* autosuspend/resume in progress */
@@ -443,6 +444,11 @@ static inline void usb_autopm_disable(struct usb_interface *intf)
usb_autopm_set_interface(intf);
}
+static inline void usb_mark_last_busy(struct usb_device *udev)
+{
+ udev->last_busy = jiffies;
+}
+
#else
static inline int usb_autopm_set_interface(struct usb_interface *intf)
@@ -457,6 +463,8 @@ static inline void usb_autopm_enable(struct usb_interface *intf)
{ }
static inline void usb_autopm_disable(struct usb_interface *intf)
{ }
+static inline void usb_mark_last_busy(struct usb_device *udev)
+{ }
#endif
/*-------------------------------------------------------------------------*/