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power management: implement pm_ops.valid for everybody

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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 <[email protected]>
Cc: David Brownell <[email protected]>
Acked-by: Pavel Machek <[email protected]>
Cc: [email protected]
Cc: Len Brown <[email protected]>
Acked-by: Russell King <[email protected]>
Cc: Greg KH <[email protected]>
Cc: "Rafael J. Wysocki" <[email protected]>
Cc: Paul Mundt <[email protected]>
Signed-off-by: Andrew Morton <[email protected]>
Signed-off-by: Linus Torvalds <[email protected]>
This commit is contained in:
Johannes Berg 2007-04-30 15:09:54 -07:00 • committed by Linus Torvalds
commit e8c9c50269
11 changed files with 39 additions and 55 deletions
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13
drivers/acpi/sleep/main.c
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@ -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;
return sleep_states[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];
default:
return 0;
}
}
static struct pm_ops acpi_pm_ops = {