]> pilppa.com Git - linux-2.6-omap-h63xx.git/commit
USB: Enhance usage of pm_message_t
authorAlan Stern <stern@rowland.harvard.edu>
Tue, 25 Nov 2008 21:39:18 +0000 (16:39 -0500)
committerGreg Kroah-Hartman <gregkh@suse.de>
Wed, 7 Jan 2009 18:00:03 +0000 (10:00 -0800)
commit65bfd2967c906ca322a4bb69a285fe0de8916ac6
treeddd3293f945613d0d27ec1dbd36030c079fb9492
parent4ec06d629628b6e5c7ff50d349a26ef5c35696e3
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>
drivers/usb/class/cdc-acm.c
drivers/usb/class/cdc-wdm.c
drivers/usb/core/driver.c
drivers/usb/core/generic.c
drivers/usb/core/hcd.c
drivers/usb/core/hcd.h
drivers/usb/core/hub.c
drivers/usb/core/sysfs.c
drivers/usb/core/usb.c
drivers/usb/core/usb.h
include/linux/usb.h