diff options
| author | Johannes Berg <johannes@sipsolutions.net> | 2007-04-30 15:09:53 -0700 |
|---|---|---|
| committer | Linus Torvalds <torvalds@woody.linux-foundation.org> | 2007-04-30 16:40:40 -0700 |
| commit | 11d77d0c01b80e44c7aceb21928508dafce774f9 (patch) | |
| tree | 4952f15df4ea2fcdba824aec5689ee9c0c7ceb90 /Documentation/power/interface.txt | |
| parent | fe0c935a6cbf25d72a27c7a345df8a2151de0b74 (diff) | |
power management: remove firmware disk mode
This patch removes the firmware disk suspend mode which is the wrong approach,
it is supposed to be used for implementing firmware-based disk suspend but
cannot actually be used for that.
Signed-off-by: Johannes Berg <johannes@sipsolutions.net>
Acked-by: Pavel Machek <pavel@ucw.cz>
Cc: <linux-pm@lists.linux-foundation.org>
Cc: David Brownell <david-b@pacbell.net>
Cc: Len Brown <lenb@kernel.org>
Acked-by: Russell King <rmk@arm.linux.org.uk>
Cc: Greg KH <greg@kroah.com>
Cc: "Rafael J. Wysocki" <rjw@sisk.pl>
Cc: Paul Mundt <lethal@linux-sh.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Diffstat (limited to 'Documentation/power/interface.txt')
| -rw-r--r-- | Documentation/power/interface.txt | 21 |
1 files changed, 5 insertions, 16 deletions
diff --git a/Documentation/power/interface.txt b/Documentation/power/interface.txt index 74311d7e0f3c..8c5b41bf3f36 100644 --- a/Documentation/power/interface.txt +++ b/Documentation/power/interface.txt @@ -18,17 +18,10 @@ states. /sys/power/disk controls the operating mode of the suspend-to-disk -mechanism. Suspend-to-disk can be handled in several ways. The -greatest distinction is who writes memory to disk - the firmware or -the kernel. If the firmware does it, we assume that it also handles -suspending the system. - -If the kernel does it, then we have three options for putting the system -to sleep - using the platform driver (e.g. ACPI or other PM -registers), powering off the system or rebooting the system (for -testing). The system will support either 'firmware' or 'platform', and -that is known a priori. But, the user may choose 'shutdown' or -'reboot' as alternatives. +mechanism. Suspend-to-disk can be handled in several ways. We have a +few options for putting the system to sleep - using the platform driver +(e.g. ACPI or other pm_ops), powering off the system or rebooting the +system (for testing). Additionally, /sys/power/disk can be used to turn on one of the two testing modes of the suspend-to-disk mechanism: 'testproc' or 'test'. If the @@ -44,16 +37,12 @@ is being slow and which device drivers are misbehaving. Reading from this file will display what the mode is currently set to. Writing to this file will accept one of - 'firmware' - 'platform' + 'platform' (only if the platform supports it) 'shutdown' 'reboot' 'testproc' 'test' -It will only change to 'firmware' or 'platform' if the system supports -it. - /sys/power/image_size controls the size of the image created by the suspend-to-disk mechanism. It can be written a string representing a non-negative integer that will be used as an upper |