diff options
| author | Alan Stern <stern@rowland.harvard.edu> | 2008-11-25 16:39:18 -0500 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@suse.de> | 2009-01-07 10:00:03 -0800 |
| commit | 65bfd2967c906ca322a4bb69a285fe0de8916ac6 (patch) | |
| tree | ddd3293f945613d0d27ec1dbd36030c079fb9492 /drivers/usb/core/hcd.h | |
| parent | 4ec06d629628b6e5c7ff50d349a26ef5c35696e3 (diff) | |
USB: Enhance usage of pm_message_t
This patch (as1177) modifies the USB core suspend and resume
routines. The resume functions now will take a pm_message_t argument,
so they will know what sort of resume is occurring. The new argument
is also passed to the port suspend/resume and bus suspend/resume
routines (although they don't use it for anything but debugging).
In addition, special pm_message_t values are used for user-initiated,
device-initiated (i.e., remote wakeup), and automatic suspend/resume.
By testing these values, drivers can tell whether or not a particular
suspend was an autosuspend. Unfortunately, they can't do the same for
resumes -- not until the pm_message_t argument is also passed to the
drivers' resume methods. That will require a bigger change.
IMO, the whole Power Management framework should have been set up this
way in the first place.
Signed-off-by: Alan Stern <stern@rowland.harvard.edu>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
Diffstat (limited to 'drivers/usb/core/hcd.h')
| -rw-r--r-- | drivers/usb/core/hcd.h | 4 |
1 files changed, 2 insertions, 2 deletions
diff --git a/drivers/usb/core/hcd.h b/drivers/usb/core/hcd.h index 0aaa9cea6b38..aa5da82d9071 100644 --- a/drivers/usb/core/hcd.h +++ b/drivers/usb/core/hcd.h @@ -388,8 +388,8 @@ extern int usb_find_interface_driver(struct usb_device *dev, #ifdef CONFIG_PM extern void usb_hcd_resume_root_hub(struct usb_hcd *hcd); extern void usb_root_hub_lost_power(struct usb_device *rhdev); -extern int hcd_bus_suspend(struct usb_device *rhdev); -extern int hcd_bus_resume(struct usb_device *rhdev); +extern int hcd_bus_suspend(struct usb_device *rhdev, pm_message_t msg); +extern int hcd_bus_resume(struct usb_device *rhdev, pm_message_t msg); #else static inline void usb_hcd_resume_root_hub(struct usb_hcd *hcd) { |