diff --git a/sound/drivers/serial-u16550.c b/sound/drivers/serial-u16550.c
index 1ed58df..ec285872 100644
--- a/sound/drivers/serial-u16550.c
+++ b/sound/drivers/serial-u16550.c
@@ -116,10 +116,10 @@
 #define SERIAL_MODE_OUTPUT_TRIGGERED	(1 << 3)
 
 typedef struct _snd_uart16550 {
-	snd_card_t *card;
-	snd_rawmidi_t *rmidi;
-	snd_rawmidi_substream_t *midi_output[SNDRV_SERIAL_MAX_OUTS];
-	snd_rawmidi_substream_t *midi_input[SNDRV_SERIAL_MAX_INS];
+	struct snd_card *card;
+	struct snd_rawmidi *rmidi;
+	struct snd_rawmidi_substream *midi_output[SNDRV_SERIAL_MAX_OUTS];
+	struct snd_rawmidi_substream *midi_input[SNDRV_SERIAL_MAX_INS];
 
 	int filemode;		//open status of file
 
@@ -166,7 +166,7 @@
 
 } snd_uart16550_t;
 
-static snd_card_t *snd_serial_cards[SNDRV_CARDS] = SNDRV_DEFAULT_PTR;
+static struct snd_card *snd_serial_cards[SNDRV_CARDS] = SNDRV_DEFAULT_PTR;
 
 static inline void snd_uart16550_add_timer(snd_uart16550_t *uart)
 {
@@ -509,7 +509,7 @@
 	}
 }
 
-static int snd_uart16550_input_open(snd_rawmidi_substream_t * substream)
+static int snd_uart16550_input_open(struct snd_rawmidi_substream *substream)
 {
 	unsigned long flags;
 	snd_uart16550_t *uart = substream->rmidi->private_data;
@@ -523,7 +523,7 @@
 	return 0;
 }
 
-static int snd_uart16550_input_close(snd_rawmidi_substream_t * substream)
+static int snd_uart16550_input_close(struct snd_rawmidi_substream *substream)
 {
 	unsigned long flags;
 	snd_uart16550_t *uart = substream->rmidi->private_data;
@@ -537,7 +537,7 @@
 	return 0;
 }
 
-static void snd_uart16550_input_trigger(snd_rawmidi_substream_t * substream, int up)
+static void snd_uart16550_input_trigger(struct snd_rawmidi_substream *substream, int up)
 {
 	unsigned long flags;
 	snd_uart16550_t *uart = substream->rmidi->private_data;
@@ -551,7 +551,7 @@
 	spin_unlock_irqrestore(&uart->open_lock, flags);
 }
 
-static int snd_uart16550_output_open(snd_rawmidi_substream_t * substream)
+static int snd_uart16550_output_open(struct snd_rawmidi_substream *substream)
 {
 	unsigned long flags;
 	snd_uart16550_t *uart = substream->rmidi->private_data;
@@ -565,7 +565,7 @@
 	return 0;
 };
 
-static int snd_uart16550_output_close(snd_rawmidi_substream_t * substream)
+static int snd_uart16550_output_close(struct snd_rawmidi_substream *substream)
 {
 	unsigned long flags;
 	snd_uart16550_t *uart = substream->rmidi->private_data;
@@ -603,7 +603,7 @@
 		return 0;
 }
 
-static int snd_uart16550_output_byte(snd_uart16550_t *uart, snd_rawmidi_substream_t * substream, unsigned char midi_byte)
+static int snd_uart16550_output_byte(snd_uart16550_t *uart, struct snd_rawmidi_substream *substream, unsigned char midi_byte)
 {
 	if (uart->buff_in_count == 0                            /* Buffer empty? */
 	    && ((uart->adaptor != SNDRV_SERIAL_MS124W_SA &&
@@ -636,7 +636,7 @@
 	return 1;
 }
 
-static void snd_uart16550_output_write(snd_rawmidi_substream_t * substream)
+static void snd_uart16550_output_write(struct snd_rawmidi_substream *substream)
 {
 	unsigned long flags;
 	unsigned char midi_byte, addr_byte;
@@ -715,7 +715,7 @@
 	spin_unlock_irqrestore(&uart->open_lock, flags);
 }
 
-static void snd_uart16550_output_trigger(snd_rawmidi_substream_t * substream, int up)
+static void snd_uart16550_output_trigger(struct snd_rawmidi_substream *substream, int up)
 {
 	unsigned long flags;
 	snd_uart16550_t *uart = substream->rmidi->private_data;
@@ -731,14 +731,14 @@
 		snd_uart16550_output_write(substream);
 }
 
-static snd_rawmidi_ops_t snd_uart16550_output =
+static struct snd_rawmidi_ops snd_uart16550_output =
 {
 	.open =		snd_uart16550_output_open,
 	.close =	snd_uart16550_output_close,
 	.trigger =	snd_uart16550_output_trigger,
 };
 
-static snd_rawmidi_ops_t snd_uart16550_input =
+static struct snd_rawmidi_ops snd_uart16550_input =
 {
 	.open =		snd_uart16550_input_open,
 	.close =	snd_uart16550_input_close,
@@ -754,13 +754,13 @@
 	return 0;
 };
 
-static int snd_uart16550_dev_free(snd_device_t *device)
+static int snd_uart16550_dev_free(struct snd_device *device)
 {
 	snd_uart16550_t *uart = device->device_data;
 	return snd_uart16550_free(uart);
 }
 
-static int __init snd_uart16550_create(snd_card_t * card,
+static int __init snd_uart16550_create(struct snd_card *card,
 				       unsigned long iobase,
 				       int irq,
 				       unsigned int speed,
@@ -769,7 +769,7 @@
 				       int droponfull,
 				       snd_uart16550_t **ruart)
 {
-	static snd_device_ops_t ops = {
+	static struct snd_device_ops ops = {
 		.dev_free =	snd_uart16550_dev_free,
 	};
 	snd_uart16550_t *uart;
@@ -838,19 +838,19 @@
 	return 0;
 }
 
-static void __init snd_uart16550_substreams(snd_rawmidi_str_t *stream)
+static void __init snd_uart16550_substreams(struct snd_rawmidi_str *stream)
 {
 	struct list_head *list;
 
 	list_for_each(list, &stream->substreams) {
-		snd_rawmidi_substream_t *substream = list_entry(list, snd_rawmidi_substream_t, list);
+		struct snd_rawmidi_substream *substream = list_entry(list, struct snd_rawmidi_substream, list);
 		sprintf(substream->name, "Serial MIDI %d", substream->number + 1);
 	}
 }
 
-static int __init snd_uart16550_rmidi(snd_uart16550_t *uart, int device, int outs, int ins, snd_rawmidi_t **rmidi)
+static int __init snd_uart16550_rmidi(snd_uart16550_t *uart, int device, int outs, int ins, struct snd_rawmidi **rmidi)
 {
-	snd_rawmidi_t *rrawmidi;
+	struct snd_rawmidi *rrawmidi;
 	int err;
 
 	if ((err = snd_rawmidi_new(uart->card, "UART Serial MIDI", device, outs, ins, &rrawmidi)) < 0)
@@ -871,7 +871,7 @@
 
 static int __init snd_serial_probe(int dev)
 {
-	snd_card_t *card;
+	struct snd_card *card;
 	snd_uart16550_t *uart;
 	int err;