diff options
| author | Johannes Berg <johannes@sipsolutions.net> | 2007-04-30 15:09:54 -0700 |
|---|---|---|
| committer | Linus Torvalds <torvalds@woody.linux-foundation.org> | 2007-04-30 16:40:40 -0700 |
| commit | e8c9c502690efd24b7055bf608e7a3c34216848b (patch) | |
| tree | 1583f34ec9cac07ddfdcb24de66e49718b107436 /drivers/acpi | |
| parent | 11d77d0c01b80e44c7aceb21928508dafce774f9 (diff) | |
power management: implement pm_ops.valid for everybody
Almost all users of pm_ops only support mem sleep, don't check in .valid and
don't reject any others in .prepare so users can be confused if they check
/sys/power/state, especially when new states are added (these would then
result in s-t-r although they're supposed to be something different).
This patch implements a generic pm_valid_only_mem function that is then
exported for users and puts it to use in almost all existing pm_ops.
Signed-off-by: Johannes Berg <johannes@sipsolutions.net>
Cc: David Brownell <david-b@pacbell.net>
Acked-by: Pavel Machek <pavel@ucw.cz>
Cc: linux-pm@lists.linux-foundation.org
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 'drivers/acpi')
| -rw-r--r-- | drivers/acpi/sleep/main.c | 13 |
1 files changed, 11 insertions, 2 deletions
diff --git a/drivers/acpi/sleep/main.c b/drivers/acpi/sleep/main.c index 37a0930fc0a6..f8c63410bcbf 100644 --- a/drivers/acpi/sleep/main.c +++ b/drivers/acpi/sleep/main.c @@ -168,9 +168,18 @@ int acpi_suspend(u32 acpi_state) static int acpi_pm_state_valid(suspend_state_t pm_state) { - u32 acpi_state = acpi_suspend_states[pm_state]; + u32 acpi_state; + + switch (pm_state) { + case PM_SUSPEND_ON: + case PM_SUSPEND_STANDBY: + case PM_SUSPEND_MEM: + acpi_state = acpi_suspend_states[pm_state]; - return sleep_states[acpi_state]; + return sleep_states[acpi_state]; + default: + return 0; + } } static struct pm_ops acpi_pm_ops = { |