diff --git a/include/sound/emux_synth.h b/include/sound/emux_synth.h
index b2d6b2a..d8cb51b 100644
--- a/include/sound/emux_synth.h
+++ b/include/sound/emux_synth.h
@@ -113,7 +113,7 @@
 	struct snd_emux_voice *voices;	/* Voices (EMU 'channel') */
 	int use_time;	/* allocation counter */
 	spinlock_t voice_lock;	/* Lock for voice access */
-	struct semaphore register_mutex;
+	struct mutex register_mutex;
 	int client;		/* For the sequencer client */
 	int ports[SNDRV_EMUX_MAX_PORTS];	/* The ports for this device */
 	struct snd_emux_port *portptrs[SNDRV_EMUX_MAX_PORTS];
diff --git a/include/sound/i2c.h b/include/sound/i2c.h
index 81eb23e..d125ff8 100644
--- a/include/sound/i2c.h
+++ b/include/sound/i2c.h
@@ -55,7 +55,7 @@
 	struct snd_card *card;	/* card which I2C belongs to */
 	char name[32];		/* some useful label */
 
-	struct semaphore lock_mutex;
+	struct mutex lock_mutex;
 
 	struct snd_i2c_bus *master;	/* master bus when SCK/SCL is shared */
 	struct list_head buses;	/* master: slave buses sharing SCK/SCL, slave: link list */
@@ -84,17 +84,17 @@
 static inline void snd_i2c_lock(struct snd_i2c_bus *bus)
 {
 	if (bus->master)
-		down(&bus->master->lock_mutex);
+		mutex_lock(&bus->master->lock_mutex);
 	else
-		down(&bus->lock_mutex);
+		mutex_lock(&bus->lock_mutex);
 }
 
 static inline void snd_i2c_unlock(struct snd_i2c_bus *bus)
 {
 	if (bus->master)
-		up(&bus->master->lock_mutex);
+		mutex_unlock(&bus->master->lock_mutex);
 	else
-		up(&bus->lock_mutex);
+		mutex_unlock(&bus->lock_mutex);
 }
 
 int snd_i2c_sendbytes(struct snd_i2c_device *device, unsigned char *bytes, int count);
diff --git a/include/sound/opl3.h b/include/sound/opl3.h
index 8339264..4449071 100644
--- a/include/sound/opl3.h
+++ b/include/sound/opl3.h
@@ -53,6 +53,7 @@
 
 #include "driver.h"
 #include <linux/time.h>
+#include <linux/mutex.h>
 #include "core.h"
 #include "hwdep.h"
 #include "timer.h"
@@ -312,7 +313,7 @@
 	int sys_timer_status;		/* system timer run status */
 	spinlock_t sys_timer_lock;	/* Lock for system timer access */
 #endif
-	struct semaphore access_mutex;	/* locking */
+	struct mutex access_mutex;	/* locking */
 };
 
 /* opl3.c */
diff --git a/include/sound/soundfont.h b/include/sound/soundfont.h
index 61a010c..f95d99b 100644
--- a/include/sound/soundfont.h
+++ b/include/sound/soundfont.h
@@ -93,7 +93,7 @@
 	int sample_locked;	/* locked time for sample */
 	struct snd_sf_callback callback;	/* callback functions */
 	int presets_locked;
-	struct semaphore presets_mutex;
+	struct mutex presets_mutex;
 	spinlock_t lock;
 	struct snd_util_memhdr *memhdr;
 };
diff --git a/include/sound/util_mem.h b/include/sound/util_mem.h
index 69944bb..a1fb706 100644
--- a/include/sound/util_mem.h
+++ b/include/sound/util_mem.h
@@ -1,5 +1,7 @@
 #ifndef __SOUND_UTIL_MEM_H
 #define __SOUND_UTIL_MEM_H
+
+#include <linux/mutex.h>
 /*
  *  Copyright (C) 2000 Takashi Iwai <tiwai@suse.de>
  *
@@ -40,7 +42,7 @@
 	int nblocks;			/* # of allocated blocks */
 	unsigned int used;		/* used memory size */
 	int block_extra_size;		/* extra data size of chunk */
-	struct semaphore block_mutex;	/* lock */
+	struct mutex block_mutex;	/* lock */
 };
 
 /*
diff --git a/include/sound/vx_core.h b/include/sound/vx_core.h
index 5fd6f33..9821a61 100644
--- a/include/sound/vx_core.h
+++ b/include/sound/vx_core.h
@@ -206,7 +206,7 @@
 	int audio_monitor[4];			/* playback hw-monitor level */
 	unsigned char audio_monitor_active[4];	/* playback hw-monitor mute/unmute */
 
-	struct semaphore mixer_mutex;
+	struct mutex mixer_mutex;
 
 	const struct firmware *firmware[4]; /* loaded firmware data */
 };