WSL2-Linux-Kernel/kernel/power
Rafael J. Wysocki 2391dae3e3 PM: introduce set_target method in pm_ops
Commit 52ade9b3b9 changed the suspend code
ordering to execute pm_ops->prepare() after the device model per-device
.suspend() calls in order to fix some ACPI-related issues.  Unfortunately, it
broke the at91 platform which assumed that pm_ops->prepare() would be called
before suspending devices.

at91 used pm_ops->prepare() to get notified of the target system sleep state,
so that it could use this information while suspending devices.  However, with
the current suspend code ordering pm_ops->prepare() is called too late for
this purpose.  Thus, at91 needs an additional method in 'struct pm_ops' that
will be used for notifying the platform of the target system sleep state.
Moreover, in the future such a method will also be needed by ACPI.

This patch adds the .set_target() method to 'struct pm_ops' and makes the
suspend code call it, if implemented, before executing the device model
per-device .suspend() calls.  It also modifies the at91 code to use
pm_ops->set_target() instead of pm_ops->prepare().

Signed-off-by: Rafael J. Wysocki <rjw@sisk.pl>
Acked-by: David Brownell <dbrownell@users.sourceforge.net>
Cc: Pavel Machek <pavel@ucw.cz>
Cc: Johannes Berg <johannes@sipsolutions.net>
Cc: Len Brown <lenb@kernel.org>
Cc: Greg KH <greg@kroah.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2007-07-01 12:29:44 -07:00
..
Kconfig Merge branch 'linux-2.6' 2007-05-08 13:37:51 +10:00
Makefile [PATCH] Disable CPU hotplug during suspend 2006-09-26 08:48:59 -07:00
console.c [PATCH] swsusp: fix suspend when console is in VT_AUTO+KD_GRAPHICS mode 2007-03-16 19:25:05 -07:00
disk.c swsusp: fix sysfs interface 2007-05-17 05:23:05 -07:00
main.c PM: introduce set_target method in pm_ops 2007-07-01 12:29:44 -07:00
pm.c [PATCH] remove kernel/power/pm.c:pm_unregister_all() 2006-07-12 16:09:08 -07:00
power.h PM: Separate hibernation code from suspend code 2007-05-09 12:30:48 -07:00
poweroff.c WorkStruct: Pass the work_struct pointer instead of context data 2006-11-22 14:55:48 +00:00
process.c recalc_sigpending_tsk fixes 2007-05-23 20:14:12 -07:00
snapshot.c Merge branch 'master' of git://git.kernel.org/pub/scm/linux/kernel/git/paulus/powerpc 2007-05-09 12:56:01 -07:00
swap.c power: Fix sizeof(PAGE_SIZE) typo 2007-05-23 20:14:14 -07:00
swsusp.c swsusp: free more memory 2007-05-07 12:12:59 -07:00
user.c swsusp: Fix userland interface 2007-06-16 13:16:15 -07:00