[ARM] Convert some arm semaphores to mutexes

The arm clock semaphores are strict mutexes, convert them to the new
mutex implementation

Signed-off-by: Arjan van de Ven <arjan@infradead.org>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>

1 files changed, 8 insertions, 7 deletions

diff --git a/arch/arm/mach-realview/clock.c b/arch/arm/mach-realview/clock.c
index ec3f7e798623..21325a4da9da 100644
--- a/arch/arm/mach-realview/clock.c
+++ b/arch/arm/mach-realview/clock.c
@@ -14,6 +14,7 @@
 #include <linux/errno.h>
 #include <linux/err.h>
 #include <linux/clk.h>
+#include <linux/mutex.h>
 
 #include <asm/semaphore.h>
 #include <asm/hardware/icst307.h>
@@ -21,20 +22,20 @@
 #include "clock.h"
 
 static LIST_HEAD(clocks);
-static DECLARE_MUTEX(clocks_sem);
+static DEFINE_MUTEX(clocks_mutex);
 
 struct clk *clk_get(struct device *dev, const char *id)
 {
         struct clk *p, *clk = ERR_PTR(-ENOENT);
 
-        down(&clocks_sem);
+        mutex_lock(&clocks_mutex);
         list_for_each_entry(p, &clocks, node) {
                 if (strcmp(id, p->name) == 0 && try_module_get(p->owner)) {
                         clk = p;
                         break;
                 }
         }
-        up(&clocks_sem);
+        mutex_unlock(&clocks_mutex);
 
         return clk;
 }
@@ -109,18 +110,18 @@ static struct clk mmci_clk = {
 
 int clk_register(struct clk *clk)
 {
-        down(&clocks_sem);
+        mutex_lock(&clocks_mutex);
         list_add(&clk->node, &clocks);
-        up(&clocks_sem);
+        mutex_unlock(&clocks_mutex);
         return 0;
 }
 EXPORT_SYMBOL(clk_register);
 
 void clk_unregister(struct clk *clk)
 {
-        down(&clocks_sem);
+        mutex_lock(&clocks_mutex);
         list_del(&clk->node);
-        up(&clocks_sem);
+        mutex_unlock(&clocks_mutex);
 }
 EXPORT_SYMBOL(clk_unregister);