[ALSA] semaphore -> mutex (driver part)

Semaphore to mutex conversion.

The conversion was generated via scripts, and the result was validated
automatically via a script as well.

Signed-off-by: Ingo Molnar <mingo@elte.hu>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Takashi Iwai <tiwai@suse.de>

sound/drivers/opl4/opl4_proc.c

@@ -28,13 +28,13 @@ static int snd_opl4_mem_proc_open(struct snd_info_entry *entry,
 {
 	struct snd_opl4 *opl4 = entry->private_data;
 
-	down(&opl4->access_mutex);
+	mutex_lock(&opl4->access_mutex);
 	if (opl4->memory_access) {
-		up(&opl4->access_mutex);
+		mutex_unlock(&opl4->access_mutex);
 		return -EBUSY;
 	}
 	opl4->memory_access++;
-	up(&opl4->access_mutex);
+	mutex_unlock(&opl4->access_mutex);
 	return 0;
 }
 
@@ -43,9 +43,9 @@ static int snd_opl4_mem_proc_release(struct snd_info_entry *entry,
 {
 	struct snd_opl4 *opl4 = entry->private_data;
 
-	down(&opl4->access_mutex);
+	mutex_lock(&opl4->access_mutex);
 	opl4->memory_access--;
-	up(&opl4->access_mutex);
+	mutex_unlock(&opl4->access_mutex);
 	return 0;
 }