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authorAlan Stern <stern@rowland.harvard.edu>2008-11-25 16:39:18 -0500
committerGreg Kroah-Hartman <gregkh@suse.de>2009-01-07 10:00:03 -0800
commit65bfd2967c906ca322a4bb69a285fe0de8916ac6 (patch)
treeddd3293f945613d0d27ec1dbd36030c079fb9492 /include
parent4ec06d629628b6e5c7ff50d349a26ef5c35696e3 (diff)
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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 'include')
-rw-r--r--include/linux/usb.h2
1 files changed, 1 insertions, 1 deletions
diff --git a/include/linux/usb.h b/include/linux/usb.h
index 8bc81bffc19..74d0b9990c7 100644
--- a/include/linux/usb.h
+++ b/include/linux/usb.h
@@ -1067,7 +1067,7 @@ struct usb_device_driver {
void (*disconnect) (struct usb_device *udev);
int (*suspend) (struct usb_device *udev, pm_message_t message);
- int (*resume) (struct usb_device *udev);
+ int (*resume) (struct usb_device *udev, pm_message_t message);
struct usbdrv_wrap drvwrap;
unsigned int supports_autosuspend:1;
};