[CPUFREQ] convert remaining cpufreq semaphore to a mutex

This one fell through the automation at first because it initializes the
semaphore to locked, but that's easily remedied

Signed-off-by:  Arjan van de Ven <arjan@infradead.org>
Signed-off-by: Dave Jones <davej@redhat.com>

 drivers/cpufreq/cpufreq.c |   37 +++++++++++++++++++------------------
 include/linux/cpufreq.h   |    3 ++-
 2 files changed, 21 insertions(+), 19 deletions(-)

1 files changed, 2 insertions, 1 deletions

diff --git a/include/linux/cpufreq.h b/include/linux/cpufreq.h
index c31650df9241..17866d7e2b71 100644
--- a/include/linux/cpufreq.h
+++ b/include/linux/cpufreq.h
@@ -14,6 +14,7 @@
 #ifndef _LINUX_CPUFREQ_H
 #define _LINUX_CPUFREQ_H
 
+#include <linux/mutex.h>
 #include <linux/config.h>
 #include <linux/notifier.h>
 #include <linux/threads.h>
@@ -82,7 +83,7 @@ struct cpufreq_policy {
         unsigned int            policy; /* see above */
         struct cpufreq_governor *governor; /* see below */
 
-        struct semaphore        lock;   /* CPU ->setpolicy or ->target may
+        struct mutex            lock;   /* CPU ->setpolicy or ->target may
                                            only be called once a time */
 
         struct work_struct      update; /* if update_policy() needs to be