From: Rafael J. Wysocki <rjw@sisk.pl>
Date: Wed, 24 Nov 2010 23:07:56 +0000 (+0100)
Subject: ACPI / PM: Introduce __acpi_bus_get_power()
X-Git-Tag: v2.6.38-rc1~68^2~20^2~8
X-Git-Url: http://git.openpandora.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=5e6d4fe4296782f1f095575b8213a97c3e925a16;p=pandora-kernel.git

ACPI / PM: Introduce __acpi_bus_get_power()

It sometimes is necessary to get the power state of an ACPI device
without updating its device->power.state field, for example to
avoid inconsistencies between device->power.state and the reference
counters of the device's power resources.  For this purpose introduce
__acpi_bus_get_power() that will return the given device's power
state via a pointer (instead of modifying device->power.state)
and make acpi_bus_get_power() use it.

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