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linux/drivers/base/power
Rafael J. Wysocki d8f3de0d24 Suspend-related patches for 2.6.27
ACPI PM: Add possibility to change suspend sequence

There are some systems out there that don't work correctly with
our current suspend/hibernation code ordering.  Provide a workaround
for these systems allowing them to pass 'acpi_sleep=old_ordering' in
the kernel command line so that it will use the pre-ACPI 2.0 ("old")
suspend code ordering.

Unfortunately, this requires us to add a platform hook to the
resuming of devices for recovering the platform in case one of the
device drivers' .suspend() routines returns error code.  Namely,
ACPI 1.0 specifies that _PTS should be called before suspending
devices, but _WAK still should be called before resuming them in
order to undo the changes made by _PTS.  However, if there is an
error during suspending devices, they are automatically resumed
without returning control to the PM core, so the _WAK has to be
called from within device_resume() in that cases.

The patch also reorders and refactors the ACPI suspend/hibernation
code to avoid duplication as far as reasonably possible.

Signed-off-by: Rafael J. Wysocki <rjw@sisk.pl>
Acked-by: Pavel Machek <pavel@suse.cz>
Signed-off-by: Jesse Barnes <jbarnes@virtuousgeek.org>
2008-06-12 14:25:09 -07:00
..
main.c Suspend-related patches for 2.6.27 2008-06-12 14:25:09 -07:00
Makefile PM: Make PM_TRACE more architecture independent 2008-02-01 18:30:54 -05:00
power.h Introduce new top level suspend and hibernation callbacks 2008-06-10 10:59:50 -07:00
sysfs.c PM: Make wakeup flags available whenever CONFIG_PM is set 2008-04-19 19:10:25 -07:00
trace.c Introduce new top level suspend and hibernation callbacks 2008-06-10 10:59:50 -07:00