From: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
Date: Tue, 18 Jun 2013 22:45:34 +0000 (+0200)
Subject: ACPI / LPSS: Power up LPSS devices during enumeration
X-Git-Tag: v3.10-rc7~10^2
X-Git-Url: http://git.openpandora.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=b9e95fc65ededbec083aa91b4faa58ad992c0891;p=pandora-kernel.git

ACPI / LPSS: Power up LPSS devices during enumeration

Commit 7cd8407 (ACPI / PM: Do not execute _PS0 for devices without
_PSC during initialization) introduced a regression on some systems
with Intel Lynxpoint Low-Power Subsystem (LPSS) where some devices
need to be powered up during initialization, but their device objects
in the ACPI namespace have _PS0 and _PS3 only (without _PSC or power
resources).

To work around this problem, make the ACPI LPSS driver power up
devices it knows about by using a new helper function
acpi_device_fix_up_power() that does all of the necessary
sanity checks and calls acpi_dev_pm_explicit_set() to put the
device into D0.

Reported-and-tested-by: Mika Westerberg <mika.westerberg@linux.intel.com>
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
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