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| 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 /include/linux/usb.h | |
| parent | USB: utilize round_jiffies_up_relative() (diff) | |
| download | linux-dev-65bfd2967c906ca322a4bb69a285fe0de8916ac6.tar.xz linux-dev-65bfd2967c906ca322a4bb69a285fe0de8916ac6.zip | |
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/linux/usb.h')
| -rw-r--r-- | include/linux/usb.h | 2 |
1 files changed, 1 insertions, 1 deletions
diff --git a/include/linux/usb.h b/include/linux/usb.h index 8bc81bffc195..74d0b9990c73 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; }; |