[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, 4 insertions, 3 deletions

diff --git a/arch/arm/kernel/ecard.c b/arch/arm/kernel/ecard.c
index dceb826bd216..96fd91926c9b 100644
--- a/arch/arm/kernel/ecard.c
+++ b/arch/arm/kernel/ecard.c
@@ -40,6 +40,7 @@
 #include <linux/proc_fs.h>
 #include <linux/device.h>
 #include <linux/init.h>
+#include <linux/mutex.h>
 
 #include <asm/dma.h>
 #include <asm/ecard.h>
@@ -206,7 +207,7 @@ static void ecard_task_readbytes(struct ecard_request *req)
 
 static DECLARE_WAIT_QUEUE_HEAD(ecard_wait);
 static struct ecard_request *ecard_req;
-static DECLARE_MUTEX(ecard_sem);
+static DEFINE_MUTEX(ecard_mutex);
 
 /*
  * Set up the expansion card daemon's page tables.
@@ -299,7 +300,7 @@ static void ecard_call(struct ecard_request *req)
 
         req->complete = &completion;
 
-        down(&ecard_sem);
+        mutex_lock(&ecard_mutex);
         ecard_req = req;
         wake_up(&ecard_wait);
 
@@ -307,7 +308,7 @@ static void ecard_call(struct ecard_request *req)
          * Now wait for kecardd to run.
          */
         wait_for_completion(&completion);
-        up(&ecard_sem);
+        mutex_unlock(&ecard_mutex);
 }
 
 /* ======================= Mid-level card control ===================== */