sa1100fb: convert ctrlr_sem in a mutex

The semaphore ctrlr_sem is used as a mutex.  Convert it to the mutex API

Signed-off-by: Matthias Kaehlcke <matthias@kaehlcke.net>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>

2 files changed, 5 insertions, 4 deletions

diff --git a/drivers/video/sa1100fb.c b/drivers/video/sa1100fb.c
index 4a9f7e121807..78bcdbc3f484 100644
--- a/drivers/video/sa1100fb.c
+++ b/drivers/video/sa1100fb.c
@@ -175,6 +175,7 @@
 #include <linux/cpufreq.h>
 #include <linux/platform_device.h>
 #include <linux/dma-mapping.h>
+#include <linux/mutex.h>
 
 #include <asm/hardware.h>
 #include <asm/io.h>
@@ -1108,7 +1109,7 @@ static void set_ctrlr_state(struct sa1100fb_info *fbi, u_int state)
 {
         u_int old_state;
 
-        down(&fbi->ctrlr_sem);
+        mutex_lock(&fbi->ctrlr_lock);
 
         old_state = fbi->state;
 
@@ -1193,7 +1194,7 @@ static void set_ctrlr_state(struct sa1100fb_info *fbi, u_int state)
                 }
                 break;
         }
-        up(&fbi->ctrlr_sem);
+        mutex_unlock(&fbi->ctrlr_lock);
 }
 
 /*
@@ -1445,7 +1446,7 @@ static struct sa1100fb_info * __init sa1100fb_init_fbinfo(struct device *dev)
 
         init_waitqueue_head(&fbi->ctrlr_wait);
         INIT_WORK(&fbi->task, sa1100fb_task);
-        init_MUTEX(&fbi->ctrlr_sem);
+        mutex_init(&fbi->ctrlr_lock);
 
         return fbi;
 }
diff --git a/drivers/video/sa1100fb.h b/drivers/video/sa1100fb.h
index f465b27ed860..86831db9a042 100644
--- a/drivers/video/sa1100fb.h
+++ b/drivers/video/sa1100fb.h
@@ -100,7 +100,7 @@ struct sa1100fb_info {
 
         volatile u_char         state;
         volatile u_char         task_state;
-        struct semaphore        ctrlr_sem;
+        struct mutex            ctrlr_lock;
         wait_queue_head_t       ctrlr_wait;
         struct work_struct      task;