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power management: remove firmware disk mode

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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>
This commit is contained in:
Johannes Berg
2007-04-30 15:09:53 -07:00
committed by Linus Torvalds
parent fe0c935a6c
commit 11d77d0c01
5 changed files with 34 additions and 54 deletions
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21
Documentation/power/interface.txt
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@ -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