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 <[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]>

0 files changed, 0 insertions, 0 deletions