From 38f6b38dbb0896511c509fbb6ceabbedbee8e87d Mon Sep 17 00:00:00 2001
From: "Rafael J. Wysocki" <rafael.j.wysocki@intel.com>
Date: Wed, 18 Mar 2015 22:39:55 +0100
Subject: [PATCH] PNP: Convert pnp_lock into a mutex

pnp_lock is a spinlock, but it is only acquired from process context,
so it may be a mutex just fine.

Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
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