tree 5191b7e21adefacc8fdd8c5b45ae1fcdd03a5aa8
parent 36237fa0a711c309a38d7a7a9aed727e0eb76449
author Rafael J. Wysocki <rjw@sisk.pl> 1294353537 +0100
committer Len Brown <len.brown@intel.com> 1294826739 -0500

ACPI / PM: Check status of power resources under mutexes

It certainly is not a good idea to execute _ON or _OFF and _STA
for the same power resource at the same time which may happen in
some circumstances in theory.  To prevent that from happening,
read the power state of each power resource under its mutex, as
that will prevent the state from being changed at the same time.

Signed-off-by: Rafael J. Wysocki <rjw@sisk.pl>
Signed-off-by: Len Brown <len.brown@intel.com>