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Code Issues Releases Wiki Activity

usbcore: move usb_autosuspend_work

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This patch (as864) moves the work routine for USB autosuspend from one
source file to another.  This permits the removal of one whole global
symbol (!) and should smooth the way for more changes in the future.

Signed-off-by: Alan Stern <stern@rowland.harvard.edu>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
This commit is contained in:
Alan Stern 2007-03-09 15:41:13 -05:00 committed by Greg Kroah-Hartman
parent 64e35d9236
commit 718efa64e3
3 changed files with 20 additions and 30 deletions
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21
drivers/usb/core/driver.c
View file

@ -1033,7 +1033,7 @@ static int autosuspend_check(struct usb_device *udev)
*
* This routine can run only in process context.
*/
int usb_suspend_both(struct usb_device *udev, pm_message_t msg)
static int usb_suspend_both(struct usb_device *udev, pm_message_t msg)
{
int status = 0;
int i = 0;
@ -1109,7 +1109,7 @@ int usb_suspend_both(struct usb_device *udev, pm_message_t msg)
*
* This routine can run only in process context.
*/
int usb_resume_both(struct usb_device *udev)
static int usb_resume_both(struct usb_device *udev)
{
int status = 0;
int i;
@ -1173,6 +1173,18 @@ int usb_resume_both(struct usb_device *udev)
#ifdef CONFIG_USB_SUSPEND
/* usb_autosuspend_work - callback routine to autosuspend a USB device */
void usb_autosuspend_work(struct work_struct *work)
{
struct usb_device *udev =
container_of(work, struct usb_device, autosuspend.work);
usb_pm_lock(udev);
udev->auto_pm = 1;
usb_suspend_both(udev, PMSG_SUSPEND);
usb_pm_unlock(udev);
}
/* Internal routine to adjust a device's usage counter and change
* its autosuspend state.
*/
@ -1405,6 +1417,11 @@ int usb_autopm_set_interface(struct usb_interface *intf)
}
EXPORT_SYMBOL_GPL(usb_autopm_set_interface);
#else
void usb_autosuspend_work(struct work_struct *work)
{}
#endif /* CONFIG_USB_SUSPEND */
static int usb_suspend(struct device *dev, pm_message_t message)

21
drivers/usb/core/usb.c
View file

@ -211,27 +211,6 @@ static void ksuspend_usb_cleanup(void)
destroy_workqueue(ksuspend_usb_wq);
}
#ifdef CONFIG_USB_SUSPEND
/* usb_autosuspend_work - callback routine to autosuspend a USB device */
static void usb_autosuspend_work(struct work_struct *work)
{
struct usb_device *udev =
container_of(work, struct usb_device, autosuspend.work);
usb_pm_lock(udev);
udev->auto_pm = 1;
usb_suspend_both(udev, PMSG_SUSPEND);
usb_pm_unlock(udev);
}
#else
static void usb_autosuspend_work(struct work_struct *work)
{}
#endif /* CONFIG_USB_SUSPEND */
#else
#define ksuspend_usb_init() 0

8
drivers/usb/core/usb.h
View file

@ -34,8 +34,7 @@ extern void usb_host_cleanup(void);
#ifdef CONFIG_PM
extern int usb_suspend_both(struct usb_device *udev, pm_message_t msg);
extern int usb_resume_both(struct usb_device *udev);
extern void usb_autosuspend_work(struct work_struct *work);
extern int usb_port_suspend(struct usb_device *dev);
extern int usb_port_resume(struct usb_device *dev);
@ -51,11 +50,6 @@ static inline void usb_pm_unlock(struct usb_device *udev)
#else
#define usb_suspend_both(udev, msg) 0
static inline int usb_resume_both(struct usb_device *udev)
{
return 0;
}
#define usb_port_suspend(dev) 0
#define usb_port_resume(dev) 0
static inline void usb_pm_lock(struct usb_device *udev) {}