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authorAlan Stern <stern@rowland.harvard.edu>2010-01-08 12:57:28 -0500
committerGreg Kroah-Hartman <gregkh@suse.de>2010-03-02 14:54:12 -0800
commit9bbdf1e0afe771ca7650f9f476769310bee9d8f3 (patch)
tree22852edde0165523d37f045575512f5759040dba /drivers/usb/core/usb.h
parent0c590e2361511997430130e10e372217c1128da6 (diff)
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USB: convert to the runtime PM framework
This patch (as1329) converts the USB stack over to the PM core's runtime PM framework. This involves numerous changes throughout usbcore, especially to hub.c and driver.c. Perhaps the most notable change is that CONFIG_USB_SUSPEND now depends on CONFIG_PM_RUNTIME instead of CONFIG_PM. Several fields in the usb_device and usb_interface structures are no longer needed. Some code which used to depend on CONFIG_USB_PM now depends on CONFIG_USB_SUSPEND (requiring some rearrangement of header files). The only visible change in behavior should be that following a system sleep (resume from RAM or resume from hibernation), autosuspended USB devices will be resumed just like everything else. They won't remain suspended. But if they aren't in use then they will naturally autosuspend again in a few seconds. Signed-off-by: Alan Stern <stern@rowland.harvard.edu> Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
Diffstat (limited to 'drivers/usb/core/usb.h')
-rw-r--r--drivers/usb/core/usb.h49
1 files changed, 6 insertions, 43 deletions
diff --git a/drivers/usb/core/usb.h b/drivers/usb/core/usb.h
index 2b74a7f99c4..cd882203ad3 100644
--- a/drivers/usb/core/usb.h
+++ b/drivers/usb/core/usb.h
@@ -55,25 +55,8 @@ extern void usb_major_cleanup(void);
extern int usb_suspend(struct device *dev, pm_message_t msg);
extern int usb_resume(struct device *dev, pm_message_t msg);
-extern void usb_autosuspend_work(struct work_struct *work);
-extern void usb_autoresume_work(struct work_struct *work);
extern int usb_port_suspend(struct usb_device *dev, pm_message_t msg);
extern int usb_port_resume(struct usb_device *dev, pm_message_t msg);
-extern int usb_external_suspend_device(struct usb_device *udev,
- pm_message_t msg);
-extern int usb_external_resume_device(struct usb_device *udev,
- pm_message_t msg);
-extern int usb_remote_wakeup(struct usb_device *dev);
-
-static inline void usb_pm_lock(struct usb_device *udev)
-{
- mutex_lock_nested(&udev->pm_mutex, udev->level);
-}
-
-static inline void usb_pm_unlock(struct usb_device *udev)
-{
- mutex_unlock(&udev->pm_mutex);
-}
#else
@@ -87,14 +70,6 @@ static inline int usb_port_resume(struct usb_device *udev, pm_message_t msg)
return 0;
}
-static inline int usb_remote_wakeup(struct usb_device *udev)
-{
- return 0;
-}
-
-static inline void usb_pm_lock(struct usb_device *udev) {}
-static inline void usb_pm_unlock(struct usb_device *udev) {}
-
#endif
#ifdef CONFIG_USB_SUSPEND
@@ -102,6 +77,7 @@ static inline void usb_pm_unlock(struct usb_device *udev) {}
extern void usb_autosuspend_device(struct usb_device *udev);
extern void usb_try_autosuspend_device(struct usb_device *udev);
extern int usb_autoresume_device(struct usb_device *udev);
+extern int usb_remote_wakeup(struct usb_device *dev);
#else
@@ -112,9 +88,13 @@ static inline int usb_autoresume_device(struct usb_device *udev)
return 0;
}
+static inline int usb_remote_wakeup(struct usb_device *udev)
+{
+ return 0;
+}
+
#endif
-extern struct workqueue_struct *ksuspend_usb_wq;
extern struct bus_type usb_bus_type;
extern struct device_type usb_device_type;
extern struct device_type usb_if_device_type;
@@ -144,23 +124,6 @@ static inline int is_usb_device_driver(struct device_driver *drv)
for_devices;
}
-/* Interfaces and their "power state" are owned by usbcore */
-
-static inline void mark_active(struct usb_interface *f)
-{
- f->is_active = 1;
-}
-
-static inline void mark_quiesced(struct usb_interface *f)
-{
- f->is_active = 0;
-}
-
-static inline int is_active(const struct usb_interface *f)
-{
- return f->is_active;
-}
-
/* for labeling diagnostics */
extern const char *usbcore_name;