From: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
Date: Sun, 27 Jan 2013 20:17:29 +0000 (+0100)
Subject: ACPI / scan: Make namespace scanning and trimming mutually exclusive
X-Git-Tag: v3.9-rc1~146^2~12^2~1
X-Git-Url: http://git.openpandora.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=c511cc1990bbc263c3f8a2ef4d7d613a3b40ffe2;p=pandora-kernel.git

ACPI / scan: Make namespace scanning and trimming mutually exclusive

There is no guarantee that acpi_bus_scan() and acpi_bus_trim() will
not be run in parallel for the same scope of the ACPI namespace,
which may lead to a great deal of confusion, so introduce a new mutex
to prevent that from happening.

Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
Acked-by: Yinghai Lu <yinghai@kernel.org>
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