diff --git a/sound/drivers/opl4/opl4_lib.c b/sound/drivers/opl4/opl4_lib.c
index 4ae5dd8..ddfc10d 100644
--- a/sound/drivers/opl4/opl4_lib.c
+++ b/sound/drivers/opl4/opl4_lib.c
@@ -27,14 +27,14 @@
 MODULE_DESCRIPTION("OPL4 driver");
 MODULE_LICENSE("GPL");
 
-static void inline snd_opl4_wait(opl4_t *opl4)
+static void inline snd_opl4_wait(struct snd_opl4 *opl4)
 {
 	int timeout = 10;
 	while ((inb(opl4->fm_port) & OPL4_STATUS_BUSY) && --timeout > 0)
 		;
 }
 
-void snd_opl4_write(opl4_t *opl4, u8 reg, u8 value)
+void snd_opl4_write(struct snd_opl4 *opl4, u8 reg, u8 value)
 {
 	snd_opl4_wait(opl4);
 	outb(reg, opl4->pcm_port);
@@ -43,7 +43,7 @@
 	outb(value, opl4->pcm_port + 1);
 }
 
-u8 snd_opl4_read(opl4_t *opl4, u8 reg)
+u8 snd_opl4_read(struct snd_opl4 *opl4, u8 reg)
 {
 	snd_opl4_wait(opl4);
 	outb(reg, opl4->pcm_port);
@@ -52,7 +52,7 @@
 	return inb(opl4->pcm_port + 1);
 }
 
-void snd_opl4_read_memory(opl4_t *opl4, char *buf, int offset, int size)
+void snd_opl4_read_memory(struct snd_opl4 *opl4, char *buf, int offset, int size)
 {
 	unsigned long flags;
 	u8 memcfg;
@@ -76,7 +76,7 @@
 	spin_unlock_irqrestore(&opl4->reg_lock, flags);
 }
 
-void snd_opl4_write_memory(opl4_t *opl4, const char *buf, int offset, int size)
+void snd_opl4_write_memory(struct snd_opl4 *opl4, const char *buf, int offset, int size)
 {
 	unsigned long flags;
 	u8 memcfg;
@@ -100,7 +100,7 @@
 	spin_unlock_irqrestore(&opl4->reg_lock, flags);
 }
 
-static void snd_opl4_enable_opl4(opl4_t *opl4)
+static void snd_opl4_enable_opl4(struct snd_opl4 *opl4)
 {
 	outb(OPL3_REG_MODE, opl4->fm_port + 2);
 	inb(opl4->fm_port);
@@ -110,7 +110,7 @@
 	inb(opl4->fm_port);
 }
 
-static int snd_opl4_detect(opl4_t *opl4)
+static int snd_opl4_detect(struct snd_opl4 *opl4)
 {
 	u8 id1, id2;
 
@@ -144,19 +144,19 @@
 }
 
 #if defined(CONFIG_SND_SEQUENCER) || (defined(MODULE) && defined(CONFIG_SND_SEQUENCER_MODULE))
-static void snd_opl4_seq_dev_free(snd_seq_device_t *seq_dev)
+static void snd_opl4_seq_dev_free(struct snd_seq_device *seq_dev)
 {
-	opl4_t *opl4 = seq_dev->private_data;
+	struct snd_opl4 *opl4 = seq_dev->private_data;
 	opl4->seq_dev = NULL;
 }
 
-static int snd_opl4_create_seq_dev(opl4_t *opl4, int seq_device)
+static int snd_opl4_create_seq_dev(struct snd_opl4 *opl4, int seq_device)
 {
 	opl4->seq_dev_num = seq_device;
 	if (snd_seq_device_new(opl4->card, seq_device, SNDRV_SEQ_DEV_ID_OPL4,
-			       sizeof(opl4_t *), &opl4->seq_dev) >= 0) {
+			       sizeof(struct snd_opl4 *), &opl4->seq_dev) >= 0) {
 		strcpy(opl4->seq_dev->name, "OPL4 Wavetable");
-		*(opl4_t **)SNDRV_SEQ_DEVICE_ARGPTR(opl4->seq_dev) = opl4;
+		*(struct snd_opl4 **)SNDRV_SEQ_DEVICE_ARGPTR(opl4->seq_dev) = opl4;
 		opl4->seq_dev->private_data = opl4;
 		opl4->seq_dev->private_free = snd_opl4_seq_dev_free;
 	}
@@ -164,7 +164,7 @@
 }
 #endif
 
-static void snd_opl4_free(opl4_t *opl4)
+static void snd_opl4_free(struct snd_opl4 *opl4)
 {
 #ifdef CONFIG_PROC_FS
 	snd_opl4_free_proc(opl4);
@@ -174,22 +174,22 @@
 	kfree(opl4);
 }
 
-static int snd_opl4_dev_free(snd_device_t *device)
+static int snd_opl4_dev_free(struct snd_device *device)
 {
-	opl4_t *opl4 = device->device_data;
+	struct snd_opl4 *opl4 = device->device_data;
 	snd_opl4_free(opl4);
 	return 0;
 }
 
-int snd_opl4_create(snd_card_t *card,
+int snd_opl4_create(struct snd_card *card,
 		    unsigned long fm_port, unsigned long pcm_port,
 		    int seq_device,
-		    opl3_t **ropl3, opl4_t **ropl4)
+		    struct snd_opl3 **ropl3, struct snd_opl4 **ropl4)
 {
-	opl4_t *opl4;
-	opl3_t *opl3;
+	struct snd_opl4 *opl4;
+	struct snd_opl3 *opl3;
 	int err;
-	static snd_device_ops_t ops = {
+	static struct snd_device_ops ops = {
 		.dev_free = snd_opl4_dev_free
 	};