diff --git a/sound/usb/usx2y/usX2Yhwdep.c b/sound/usb/usx2y/usX2Yhwdep.c
index fc0d534..4b52d18 100644
--- a/sound/usb/usx2y/usX2Yhwdep.c
+++ b/sound/usb/usx2y/usX2Yhwdep.c
@@ -31,7 +31,7 @@
 #include "usbusx2y.h"
 #include "usX2Yhwdep.h"
 
-int usX2Y_hwdep_pcm_new(snd_card_t* card);
+int usX2Y_hwdep_pcm_new(struct snd_card *card);
 
 
 static struct page * snd_us428ctls_vm_nopage(struct vm_area_struct *area, unsigned long address, int *type)
@@ -49,7 +49,7 @@
 	offset = area->vm_pgoff << PAGE_SHIFT;
 	offset += address - area->vm_start;
 	snd_assert((offset % PAGE_SIZE) == 0, return NOPAGE_OOM);
-	vaddr = (char*)((usX2Ydev_t*)area->vm_private_data)->us428ctls_sharedmem + offset;
+	vaddr = (char*)((struct usX2Ydev *)area->vm_private_data)->us428ctls_sharedmem + offset;
 	page = virt_to_page(vaddr);
 	get_page(page);
 	snd_printdd( "vaddr=%p made us428ctls_vm_nopage() return %p; offset=%lX\n", vaddr, page, offset);
@@ -64,10 +64,10 @@
 	.nopage = snd_us428ctls_vm_nopage,
 };
 
-static int snd_us428ctls_mmap(snd_hwdep_t * hw, struct file *filp, struct vm_area_struct *area)
+static int snd_us428ctls_mmap(struct snd_hwdep * hw, struct file *filp, struct vm_area_struct *area)
 {
 	unsigned long	size = (unsigned long)(area->vm_end - area->vm_start);
-	usX2Ydev_t	*us428 = hw->private_data;
+	struct usX2Ydev	*us428 = hw->private_data;
 
 	// FIXME this hwdep interface is used twice: fpga download and mmap for controlling Lights etc. Maybe better using 2 hwdep devs?
 	// so as long as the device isn't fully initialised yet we return -EBUSY here.
@@ -75,16 +75,16 @@
 		return -EBUSY;
 
 	/* if userspace tries to mmap beyond end of our buffer, fail */ 
-        if (size > PAGE_ALIGN(sizeof(us428ctls_sharedmem_t))) {
-		snd_printd( "%lu > %lu\n", size, (unsigned long)sizeof(us428ctls_sharedmem_t)); 
+        if (size > PAGE_ALIGN(sizeof(struct us428ctls_sharedmem))) {
+		snd_printd( "%lu > %lu\n", size, (unsigned long)sizeof(struct us428ctls_sharedmem)); 
                 return -EINVAL;
 	}
 
 	if (!us428->us428ctls_sharedmem) {
 		init_waitqueue_head(&us428->us428ctls_wait_queue_head);
-		if(!(us428->us428ctls_sharedmem = snd_malloc_pages(sizeof(us428ctls_sharedmem_t), GFP_KERNEL)))
+		if(!(us428->us428ctls_sharedmem = snd_malloc_pages(sizeof(struct us428ctls_sharedmem), GFP_KERNEL)))
 			return -ENOMEM;
-		memset(us428->us428ctls_sharedmem, -1, sizeof(us428ctls_sharedmem_t));
+		memset(us428->us428ctls_sharedmem, -1, sizeof(struct us428ctls_sharedmem));
 		us428->us428ctls_sharedmem->CtlSnapShotLast = -2;
 	}
 	area->vm_ops = &us428ctls_vm_ops;
@@ -93,11 +93,11 @@
 	return 0;
 }
 
-static unsigned int snd_us428ctls_poll(snd_hwdep_t *hw, struct file *file, poll_table *wait)
+static unsigned int snd_us428ctls_poll(struct snd_hwdep *hw, struct file *file, poll_table *wait)
 {
 	unsigned int	mask = 0;
-	usX2Ydev_t	*us428 = hw->private_data;
-	us428ctls_sharedmem_t *shm = us428->us428ctls_sharedmem;
+	struct usX2Ydev	*us428 = hw->private_data;
+	struct us428ctls_sharedmem *shm = us428->us428ctls_sharedmem;
 	if (us428->chip_status & USX2Y_STAT_CHIP_HUP)
 		return POLLHUP;
 
@@ -110,24 +110,25 @@
 }
 
 
-static int snd_usX2Y_hwdep_open(snd_hwdep_t *hw, struct file *file)
+static int snd_usX2Y_hwdep_open(struct snd_hwdep *hw, struct file *file)
 {
 	return 0;
 }
 
-static int snd_usX2Y_hwdep_release(snd_hwdep_t *hw, struct file *file)
+static int snd_usX2Y_hwdep_release(struct snd_hwdep *hw, struct file *file)
 {
 	return 0;
 }
 
-static int snd_usX2Y_hwdep_dsp_status(snd_hwdep_t *hw, snd_hwdep_dsp_status_t *info)
+static int snd_usX2Y_hwdep_dsp_status(struct snd_hwdep *hw,
+				      struct snd_hwdep_dsp_status *info)
 {
 	static char *type_ids[USX2Y_TYPE_NUMS] = {
 		[USX2Y_TYPE_122] = "us122",
 		[USX2Y_TYPE_224] = "us224",
 		[USX2Y_TYPE_428] = "us428",
 	};
-	usX2Ydev_t *us428 = hw->private_data;
+	struct usX2Ydev	*us428 = hw->private_data;
 	int id = -1;
 
 	switch (le16_to_cpu(us428->chip.dev->descriptor.idProduct)) {
@@ -145,35 +146,35 @@
 		return -ENODEV;
 	strcpy(info->id, type_ids[id]);
 	info->num_dsps = 2;		// 0: Prepad Data, 1: FPGA Code
- 	if (us428->chip_status & USX2Y_STAT_CHIP_INIT) 
+	if (us428->chip_status & USX2Y_STAT_CHIP_INIT)
 		info->chip_ready = 1;
  	info->version = USX2Y_DRIVER_VERSION; 
 	return 0;
 }
 
 
-static int usX2Y_create_usbmidi(snd_card_t* card )
+static int usX2Y_create_usbmidi(struct snd_card *card)
 {
-	static snd_usb_midi_endpoint_info_t quirk_data_1 = {
-		.out_ep =0x06,
+	static struct snd_usb_midi_endpoint_info quirk_data_1 = {
+		.out_ep = 0x06,
 		.in_ep = 0x06,
 		.out_cables =	0x001,
 		.in_cables =	0x001
 	};
-	static snd_usb_audio_quirk_t quirk_1 = {
+	static struct snd_usb_audio_quirk quirk_1 = {
 		.vendor_name =	"TASCAM",
 		.product_name =	NAME_ALLCAPS,
 		.ifnum = 	0,
        		.type = QUIRK_MIDI_FIXED_ENDPOINT,
 		.data = &quirk_data_1
 	};
-	static snd_usb_midi_endpoint_info_t quirk_data_2 = {
-		.out_ep =0x06,
+	static struct snd_usb_midi_endpoint_info quirk_data_2 = {
+		.out_ep = 0x06,
 		.in_ep = 0x06,
 		.out_cables =	0x003,
 		.in_cables =	0x003
 	};
-	static snd_usb_audio_quirk_t quirk_2 = {
+	static struct snd_usb_audio_quirk quirk_2 = {
 		.vendor_name =	"TASCAM",
 		.product_name =	"US428",
 		.ifnum = 	0,
@@ -182,13 +183,15 @@
 	};
 	struct usb_device *dev = usX2Y(card)->chip.dev;
 	struct usb_interface *iface = usb_ifnum_to_if(dev, 0);
-	snd_usb_audio_quirk_t *quirk = le16_to_cpu(dev->descriptor.idProduct) == USB_ID_US428 ? &quirk_2 : &quirk_1;
+	struct snd_usb_audio_quirk *quirk =
+		le16_to_cpu(dev->descriptor.idProduct) == USB_ID_US428 ?
+		&quirk_2 : &quirk_1;
 
 	snd_printdd("usX2Y_create_usbmidi \n");
 	return snd_usb_create_midi_interface(&usX2Y(card)->chip, iface, quirk);
 }
 
-static int usX2Y_create_alsa_devices(snd_card_t* card)
+static int usX2Y_create_alsa_devices(struct snd_card *card)
 {
 	int err;
 
@@ -208,9 +211,10 @@
 	return err;
 } 
 
-static int snd_usX2Y_hwdep_dsp_load(snd_hwdep_t *hw, snd_hwdep_dsp_image_t *dsp)
+static int snd_usX2Y_hwdep_dsp_load(struct snd_hwdep *hw,
+				    struct snd_hwdep_dsp_image *dsp)
 {
-	usX2Ydev_t *priv = hw->private_data;
+	struct usX2Ydev *priv = hw->private_data;
 	int	lret, err = -EINVAL;
 	snd_printdd( "dsp_load %s\n", dsp->name);
 
@@ -257,10 +261,10 @@
 }
 
 
-int usX2Y_hwdep_new(snd_card_t* card, struct usb_device* device)
+int usX2Y_hwdep_new(struct snd_card *card, struct usb_device* device)
 {
 	int err;
-	snd_hwdep_t *hw;
+	struct snd_hwdep *hw;
 
 	if ((err = snd_hwdep_new(card, SND_USX2Y_LOADER_ID, 0, &hw)) < 0)
 		return err;
diff --git a/sound/usb/usx2y/usX2Yhwdep.h b/sound/usb/usx2y/usX2Yhwdep.h
index d612a26..c095d5b 100644
--- a/sound/usb/usx2y/usX2Yhwdep.h
+++ b/sound/usb/usx2y/usX2Yhwdep.h
@@ -1,6 +1,6 @@
 #ifndef USX2YHWDEP_H
 #define USX2YHWDEP_H
 
-int usX2Y_hwdep_new(snd_card_t* card, struct usb_device* device);
+int usX2Y_hwdep_new(struct snd_card *card, struct usb_device* device);
 
 #endif
diff --git a/sound/usb/usx2y/usbus428ctldefs.h b/sound/usb/usx2y/usbus428ctldefs.h
index 6af1643..b864e7e 100644
--- a/sound/usb/usx2y/usbus428ctldefs.h
+++ b/sound/usb/usx2y/usbus428ctldefs.h
@@ -51,7 +51,7 @@
 #define T_NULL  0x80
 
 
-struct us428_ctls{
+struct us428_ctls {
 	unsigned char   Fader[9];
 	unsigned char 	Transport;
 	unsigned char 	Modifier;
@@ -63,46 +63,42 @@
 	unsigned char   Wheel[5];
 };
 
-typedef struct us428_ctls us428_ctls_t;
-
-typedef struct us428_setByte{
+struct us428_setByte {
 	unsigned char Offset,
 		Value;
-}us428_setByte_t;
+};
 
 enum {
 	eLT_Volume = 0,
 	eLT_Light
 };
 
-typedef struct usX2Y_volume {
+struct usX2Y_volume {
 	unsigned char Channel,
 		LH,
 		LL,
 		RH,
 		RL;
-} usX2Y_volume_t;
-
-struct us428_lights{
-	us428_setByte_t Light[7];
 };
-typedef struct us428_lights us428_lights_t;
 
-typedef struct {
+struct us428_lights {
+	struct us428_setByte Light[7];
+};
+
+struct us428_p4out {
 	char type;
 	union {
-		usX2Y_volume_t	vol;
-		us428_lights_t  lights;
+		struct usX2Y_volume vol;
+		struct us428_lights lights;
 	} val;
-} us428_p4out_t;
+};
 
 #define N_us428_ctl_BUFS 16
 #define N_us428_p4out_BUFS 16
 struct us428ctls_sharedmem{
-	us428_ctls_t	CtlSnapShot[N_us428_ctl_BUFS];
-	int		CtlSnapShotDiffersAt[N_us428_ctl_BUFS];
-	int		CtlSnapShotLast, CtlSnapShotRed;
-	us428_p4out_t	p4out[N_us428_p4out_BUFS];
-	int		p4outLast, p4outSent;
+	struct us428_ctls	CtlSnapShot[N_us428_ctl_BUFS];
+	int			CtlSnapShotDiffersAt[N_us428_ctl_BUFS];
+	int			CtlSnapShotLast, CtlSnapShotRed;
+	struct us428_p4out	p4out[N_us428_p4out_BUFS];
+	int			p4outLast, p4outSent;
 };
-typedef struct us428ctls_sharedmem us428ctls_sharedmem_t;
diff --git a/sound/usb/usx2y/usbusx2y.c b/sound/usb/usx2y/usbusx2y.c
index 412c2e5..9807c3d 100644
--- a/sound/usb/usx2y/usbusx2y.c
+++ b/sound/usb/usx2y/usbusx2y.c
@@ -167,28 +167,28 @@
 static int snd_usX2Y_card_used[SNDRV_CARDS];
 
 static void usX2Y_usb_disconnect(struct usb_device* usb_device, void* ptr);
-static void snd_usX2Y_card_private_free(snd_card_t *card);
+static void snd_usX2Y_card_private_free(struct snd_card *card);
 
 /* 
  * pipe 4 is used for switching the lamps, setting samplerate, volumes ....   
  */
-static void i_usX2Y_Out04Int(struct urb* urb, struct pt_regs *regs)
+static void i_usX2Y_Out04Int(struct urb *urb, struct pt_regs *regs)
 {
 #ifdef CONFIG_SND_DEBUG
 	if (urb->status) {
 		int 		i;
-		usX2Ydev_t*	usX2Y = urb->context;
+		struct usX2Ydev *usX2Y = urb->context;
 		for (i = 0; i < 10 && usX2Y->AS04.urb[i] != urb; i++);
 		snd_printdd("i_usX2Y_Out04Int() urb %i status=%i\n", i, urb->status);
 	}
 #endif
 }
 
-static void i_usX2Y_In04Int(struct urb* urb, struct pt_regs *regs)
+static void i_usX2Y_In04Int(struct urb *urb, struct pt_regs *regs)
 {
 	int			err = 0;
-	usX2Ydev_t		*usX2Y = urb->context;
-	us428ctls_sharedmem_t	*us428ctls = usX2Y->us428ctls_sharedmem;
+	struct usX2Ydev		*usX2Y = urb->context;
+	struct us428ctls_sharedmem	*us428ctls = usX2Y->us428ctls_sharedmem;
 
 	usX2Y->In04IntCalls++;
 
@@ -239,10 +239,10 @@
 					send = 0;
 				for (j = 0; j < URBS_AsyncSeq  &&  !err; ++j)
 					if (0 == usX2Y->AS04.urb[j]->status) {
-						us428_p4out_t *p4out = us428ctls->p4out + send;	// FIXME if more then 1 p4out is new, 1 gets lost.
+						struct us428_p4out *p4out = us428ctls->p4out + send;	// FIXME if more then 1 p4out is new, 1 gets lost.
 						usb_fill_bulk_urb(usX2Y->AS04.urb[j], usX2Y->chip.dev,
 								  usb_sndbulkpipe(usX2Y->chip.dev, 0x04), &p4out->val.vol, 
-								  p4out->type == eLT_Light ? sizeof(us428_lights_t) : 5,
+								  p4out->type == eLT_Light ? sizeof(struct us428_lights) : 5,
 								  i_usX2Y_Out04Int, usX2Y);
 						err = usb_submit_urb(usX2Y->AS04.urb[j], GFP_ATOMIC);
 						us428ctls->p4outSent = send;
@@ -261,7 +261,7 @@
 /*
  * Prepare some urbs
  */
-int usX2Y_AsyncSeq04_init(usX2Ydev_t* usX2Y)
+int usX2Y_AsyncSeq04_init(struct usX2Ydev *usX2Y)
 {
 	int	err = 0,
 		i;
@@ -283,7 +283,7 @@
 	return err;
 }
 
-int usX2Y_In04_init(usX2Ydev_t* usX2Y)
+int usX2Y_In04_init(struct usX2Ydev *usX2Y)
 {
 	if (! (usX2Y->In04urb = usb_alloc_urb(0, GFP_KERNEL)))
 		return -ENOMEM;
@@ -301,7 +301,7 @@
 	return usb_submit_urb(usX2Y->In04urb, GFP_KERNEL);
 }
 
-static void usX2Y_unlinkSeq(snd_usX2Y_AsyncSeq_t* S)
+static void usX2Y_unlinkSeq(struct snd_usX2Y_AsyncSeq *S)
 {
 	int	i;
 	for (i = 0; i < URBS_AsyncSeq; ++i) {
@@ -334,16 +334,16 @@
 	{ /* terminator */ }
 };
 
-static snd_card_t* usX2Y_create_card(struct usb_device* device)
+static struct snd_card *usX2Y_create_card(struct usb_device *device)
 {
 	int		dev;
-	snd_card_t*	card;
+	struct snd_card *	card;
 	for (dev = 0; dev < SNDRV_CARDS; ++dev)
 		if (enable[dev] && !snd_usX2Y_card_used[dev])
 			break;
 	if (dev >= SNDRV_CARDS)
 		return NULL;
-	card = snd_card_new(index[dev], id[dev], THIS_MODULE, sizeof(usX2Ydev_t));
+	card = snd_card_new(index[dev], id[dev], THIS_MODULE, sizeof(struct usX2Ydev));
 	if (!card)
 		return NULL;
 	snd_usX2Y_card_used[usX2Y(card)->chip.index = dev] = 1;
@@ -367,10 +367,10 @@
 }
 
 
-static void* usX2Y_usb_probe(struct usb_device* device, struct usb_interface *intf, const struct usb_device_id* device_id)
+static void *usX2Y_usb_probe(struct usb_device *device, struct usb_interface *intf, const struct usb_device_id *device_id)
 {
 	int		err;
-	snd_card_t*	card;
+	struct snd_card *	card;
 	if (le16_to_cpu(device->descriptor.idVendor) != 0x1604 ||
 	    (le16_to_cpu(device->descriptor.idProduct) != USB_ID_US122 &&
 	     le16_to_cpu(device->descriptor.idProduct) != USB_ID_US224 &&
@@ -414,7 +414,7 @@
 	.id_table =	snd_usX2Y_usb_id_table,
 };
 
-static void snd_usX2Y_card_private_free(snd_card_t *card)
+static void snd_usX2Y_card_private_free(struct snd_card *card)
 {
 	kfree(usX2Y(card)->In04Buf);
 	usb_free_urb(usX2Y(card)->In04urb);
@@ -427,11 +427,11 @@
 /*
  * Frees the device.
  */
-static void usX2Y_usb_disconnect(struct usb_device* device, void* ptr)
+static void usX2Y_usb_disconnect(struct usb_device *device, void* ptr)
 {
 	if (ptr) {
-		snd_card_t *card = ptr;
-		usX2Ydev_t* usX2Y = usX2Y(card);
+		struct snd_card *card = ptr;
+		struct usX2Ydev *usX2Y = usX2Y(card);
 		struct list_head *p;
 		usX2Y->chip.shutdown = 1;
 		usX2Y->chip_status = USX2Y_STAT_CHIP_HUP;
diff --git a/sound/usb/usx2y/usbusx2y.h b/sound/usb/usx2y/usbusx2y.h
index f65f3a7..435c1fe 100644
--- a/sound/usb/usx2y/usbusx2y.h
+++ b/sound/usb/usx2y/usbusx2y.h
@@ -8,47 +8,46 @@
 
 #define URBS_AsyncSeq 10
 #define URB_DataLen_AsyncSeq 32
-typedef struct {
-	struct urb*	urb[URBS_AsyncSeq];
-	char*   buffer;
-} snd_usX2Y_AsyncSeq_t;
+struct snd_usX2Y_AsyncSeq {
+	struct urb	*urb[URBS_AsyncSeq];
+	char		*buffer;
+};
 
-typedef struct {
+struct snd_usX2Y_urbSeq {
 	int	submitted;
 	int	len;
-	struct urb*	urb[0];
-} snd_usX2Y_urbSeq_t;
+	struct urb	*urb[0];
+};
 
-typedef struct snd_usX2Y_substream snd_usX2Y_substream_t;
 #include "usx2yhwdeppcm.h"
 
-typedef struct {
-	snd_usb_audio_t 	chip;
+struct usX2Ydev {
+	struct snd_usb_audio 	chip;
 	int			stride;
 	struct urb		*In04urb;
 	void			*In04Buf;
 	char			In04Last[24];
 	unsigned		In04IntCalls;
-	snd_usX2Y_urbSeq_t	*US04;
+	struct snd_usX2Y_urbSeq	*US04;
 	wait_queue_head_t	In04WaitQueue;
-	snd_usX2Y_AsyncSeq_t	AS04;
+	struct snd_usX2Y_AsyncSeq	AS04;
 	unsigned int		rate,
 				format;
 	int			chip_status;
 	struct semaphore	prepare_mutex;
-	us428ctls_sharedmem_t	*us428ctls_sharedmem;
+	struct us428ctls_sharedmem	*us428ctls_sharedmem;
 	int			wait_iso_frame;
 	wait_queue_head_t	us428ctls_wait_queue_head;
-	snd_usX2Y_hwdep_pcm_shm_t	*hwdep_pcm_shm;
-	snd_usX2Y_substream_t	*subs[4];
-	snd_usX2Y_substream_t	* volatile  prepare_subs;
+	struct snd_usX2Y_hwdep_pcm_shm	*hwdep_pcm_shm;
+	struct snd_usX2Y_substream	*subs[4];
+	struct snd_usX2Y_substream	* volatile  prepare_subs;
 	wait_queue_head_t	prepare_wait_queue;
-} usX2Ydev_t;
+};
 
 
 struct snd_usX2Y_substream {
-	usX2Ydev_t	*usX2Y;
-	snd_pcm_substream_t *pcm_substream;
+	struct usX2Ydev	*usX2Y;
+	struct snd_pcm_substream *pcm_substream;
 
 	int			endpoint;		
 	unsigned int		maxpacksize;		/* max packet size in bytes */
@@ -72,12 +71,12 @@
 };
 
 
-#define usX2Y(c) ((usX2Ydev_t*)(c)->private_data)
+#define usX2Y(c) ((struct usX2Ydev *)(c)->private_data)
 
-int usX2Y_audio_create(snd_card_t* card);
+int usX2Y_audio_create(struct snd_card *card);
 
-int usX2Y_AsyncSeq04_init(usX2Ydev_t* usX2Y);
-int usX2Y_In04_init(usX2Ydev_t* usX2Y);
+int usX2Y_AsyncSeq04_init(struct usX2Ydev *usX2Y);
+int usX2Y_In04_init(struct usX2Ydev *usX2Y);
 
 #define NAME_ALLCAPS "US-X2Y"
 
diff --git a/sound/usb/usx2y/usbusx2yaudio.c b/sound/usb/usx2y/usbusx2yaudio.c
index e1dbfbb..a6bbc7a 100644
--- a/sound/usb/usx2y/usbusx2yaudio.c
+++ b/sound/usb/usx2y/usbusx2yaudio.c
@@ -67,18 +67,20 @@
 #endif
 
 
-static int usX2Y_urb_capt_retire(snd_usX2Y_substream_t *subs)
+static int usX2Y_urb_capt_retire(struct snd_usX2Y_substream *subs)
 {
 	struct urb	*urb = subs->completed_urb;
-	snd_pcm_runtime_t *runtime = subs->pcm_substream->runtime;
+	struct snd_pcm_runtime *runtime = subs->pcm_substream->runtime;
 	unsigned char	*cp;
 	int 		i, len, lens = 0, hwptr_done = subs->hwptr_done;
-	usX2Ydev_t	*usX2Y = subs->usX2Y;
+	struct usX2Ydev	*usX2Y = subs->usX2Y;
 
 	for (i = 0; i < nr_of_packs(); i++) {
 		cp = (unsigned char*)urb->transfer_buffer + urb->iso_frame_desc[i].offset;
 		if (urb->iso_frame_desc[i].status) { /* active? hmm, skip this */
-			snd_printk(KERN_ERR "activ frame status %i. Most propably some hardware problem.\n", urb->iso_frame_desc[i].status);
+			snd_printk(KERN_ERR "active frame status %i. "
+				   "Most propably some hardware problem.\n",
+				   urb->iso_frame_desc[i].status);
 			return urb->iso_frame_desc[i].status;
 		}
 		len = urb->iso_frame_desc[i].actual_length / usX2Y->stride;
@@ -94,7 +96,8 @@
 			memcpy(runtime->dma_area + hwptr_done * usX2Y->stride, cp, blen);
 			memcpy(runtime->dma_area, cp + blen, len * usX2Y->stride - blen);
 		} else {
-			memcpy(runtime->dma_area + hwptr_done * usX2Y->stride, cp, len * usX2Y->stride);
+			memcpy(runtime->dma_area + hwptr_done * usX2Y->stride, cp,
+			       len * usX2Y->stride);
 		}
 		lens += len;
 		if ((hwptr_done += len) >= runtime->buffer_size)
@@ -120,13 +123,13 @@
  * it directly from the buffer.  thus the data is once copied to
  * a temporary buffer and urb points to that.
  */
-static int usX2Y_urb_play_prepare(snd_usX2Y_substream_t *subs,
+static int usX2Y_urb_play_prepare(struct snd_usX2Y_substream *subs,
 				  struct urb *cap_urb,
 				  struct urb *urb)
 {
 	int count, counts, pack;
-	usX2Ydev_t* usX2Y = subs->usX2Y;
-	snd_pcm_runtime_t *runtime = subs->pcm_substream->runtime;
+	struct usX2Ydev *usX2Y = subs->usX2Y;
+	struct snd_pcm_runtime *runtime = subs->pcm_substream->runtime;
 
 	count = 0;
 	for (pack = 0; pack <  nr_of_packs(); pack++) {
@@ -139,7 +142,8 @@
 		}
 		/* set up descriptor */
 		urb->iso_frame_desc[pack].offset = pack ?
-			urb->iso_frame_desc[pack - 1].offset + urb->iso_frame_desc[pack - 1].length :
+			urb->iso_frame_desc[pack - 1].offset +
+			urb->iso_frame_desc[pack - 1].length :
 			0;
 		urb->iso_frame_desc[pack].length = cap_urb->iso_frame_desc[pack].actual_length;
 	}
@@ -151,8 +155,10 @@
 			int len;
 			len = runtime->buffer_size - subs->hwptr;
 			urb->transfer_buffer = subs->tmpbuf;
-			memcpy(subs->tmpbuf, runtime->dma_area + subs->hwptr * usX2Y->stride, len * usX2Y->stride);
-			memcpy(subs->tmpbuf + len * usX2Y->stride, runtime->dma_area, (count - len) * usX2Y->stride);
+			memcpy(subs->tmpbuf, runtime->dma_area +
+			       subs->hwptr * usX2Y->stride, len * usX2Y->stride);
+			memcpy(subs->tmpbuf + len * usX2Y->stride,
+			       runtime->dma_area, (count - len) * usX2Y->stride);
 			subs->hwptr += count;
 			subs->hwptr -= runtime->buffer_size;
 		} else {
@@ -172,9 +178,9 @@
  *
  * update the current position and call callback if a period is processed.
  */
-static void usX2Y_urb_play_retire(snd_usX2Y_substream_t *subs, struct urb *urb)
+static void usX2Y_urb_play_retire(struct snd_usX2Y_substream *subs, struct urb *urb)
 {
-	snd_pcm_runtime_t *runtime = subs->pcm_substream->runtime;
+	struct snd_pcm_runtime *runtime = subs->pcm_substream->runtime;
 	int		len = urb->actual_length / subs->usX2Y->stride;
 
 	subs->transfer_done += len;
@@ -187,7 +193,7 @@
 	}
 }
 
-static int usX2Y_urb_submit(snd_usX2Y_substream_t *subs, struct urb *urb, int frame)
+static int usX2Y_urb_submit(struct snd_usX2Y_substream *subs, struct urb *urb, int frame)
 {
 	int err;
 	if (!urb)
@@ -202,7 +208,9 @@
 	return 0;
 }
 
-static inline int usX2Y_usbframe_complete(snd_usX2Y_substream_t *capsubs, snd_usX2Y_substream_t *playbacksubs, int frame)
+static inline int usX2Y_usbframe_complete(struct snd_usX2Y_substream *capsubs,
+					  struct snd_usX2Y_substream *playbacksubs,
+					  int frame)
 {
 	int err, state;
 	struct urb *urb = playbacksubs->completed_urb;
@@ -211,9 +219,8 @@
 	if (NULL != urb) {
 		if (state == state_RUNNING)
 			usX2Y_urb_play_retire(playbacksubs, urb);
-		else
-			if (state >= state_PRERUNNING)
-				atomic_inc(&playbacksubs->state);
+		else if (state >= state_PRERUNNING)
+			atomic_inc(&playbacksubs->state);
 	} else {
 		switch (state) {
 		case state_STARTING1:
@@ -228,8 +235,9 @@
 	}
 	if (urb) {
 		if ((err = usX2Y_urb_play_prepare(playbacksubs, capsubs->completed_urb, urb)) ||
-		    (err = usX2Y_urb_submit(playbacksubs, urb, frame)))
+		    (err = usX2Y_urb_submit(playbacksubs, urb, frame))) {
 			return err;
+		}
 	}
 
 	playbacksubs->completed_urb = NULL;
@@ -249,18 +257,19 @@
 }
 
 
-static void usX2Y_clients_stop(usX2Ydev_t *usX2Y)
+static void usX2Y_clients_stop(struct usX2Ydev *usX2Y)
 {
 	int s, u;
+
 	for (s = 0; s < 4; s++) {
-		snd_usX2Y_substream_t *subs = usX2Y->subs[s];
+		struct snd_usX2Y_substream *subs = usX2Y->subs[s];
 		if (subs) {
 			snd_printdd("%i %p state=%i\n", s, subs, atomic_read(&subs->state));
 			atomic_set(&subs->state, state_STOPPED);
 		}
 	}
 	for (s = 0; s < 4; s++) {
-		snd_usX2Y_substream_t *subs = usX2Y->subs[s];
+		struct snd_usX2Y_substream *subs = usX2Y->subs[s];
 		if (subs) {
 			if (atomic_read(&subs->state) >= state_PRERUNNING) {
 				snd_pcm_stop(subs->pcm_substream, SNDRV_PCM_STATE_XRUN);
@@ -268,7 +277,8 @@
 			for (u = 0; u < NRURBS; u++) {
 				struct urb *urb = subs->urb[u];
 				if (NULL != urb)
-					snd_printdd("%i status=%i start_frame=%i\n", u, urb->status, urb->start_frame);
+					snd_printdd("%i status=%i start_frame=%i\n",
+						    u, urb->status, urb->start_frame);
 			}
 		}
 	}
@@ -276,30 +286,36 @@
 	wake_up(&usX2Y->prepare_wait_queue);
 }
 
-static void usX2Y_error_urb_status(usX2Ydev_t *usX2Y, snd_usX2Y_substream_t *subs, struct urb *urb)
+static void usX2Y_error_urb_status(struct usX2Ydev *usX2Y,
+				   struct snd_usX2Y_substream *subs, struct urb *urb)
 {
 	snd_printk(KERN_ERR "ep=%i stalled with status=%i\n", subs->endpoint, urb->status);
 	urb->status = 0;
 	usX2Y_clients_stop(usX2Y);
 }
 
-static void usX2Y_error_sequence(usX2Ydev_t *usX2Y, snd_usX2Y_substream_t *subs, struct urb *urb)
+static void usX2Y_error_sequence(struct usX2Ydev *usX2Y,
+				 struct snd_usX2Y_substream *subs, struct urb *urb)
 {
 	snd_printk(KERN_ERR "Sequence Error!(hcd_frame=%i ep=%i%s;wait=%i,frame=%i).\n"
 		   KERN_ERR "Most propably some urb of usb-frame %i is still missing.\n"
 		   KERN_ERR "Cause could be too long delays in usb-hcd interrupt handling.\n",
 		   usb_get_current_frame_number(usX2Y->chip.dev),
-		   subs->endpoint, usb_pipein(urb->pipe) ? "in" : "out", usX2Y->wait_iso_frame, urb->start_frame, usX2Y->wait_iso_frame);
+		   subs->endpoint, usb_pipein(urb->pipe) ? "in" : "out",
+		   usX2Y->wait_iso_frame, urb->start_frame, usX2Y->wait_iso_frame);
 	usX2Y_clients_stop(usX2Y);
 }
 
 static void i_usX2Y_urb_complete(struct urb *urb, struct pt_regs *regs)
 {
-	snd_usX2Y_substream_t *subs = (snd_usX2Y_substream_t*)urb->context;
-	usX2Ydev_t *usX2Y = subs->usX2Y;
+	struct snd_usX2Y_substream *subs = urb->context;
+	struct usX2Ydev *usX2Y = subs->usX2Y;
 
 	if (unlikely(atomic_read(&subs->state) < state_PREPARED)) {
-		snd_printdd("hcd_frame=%i ep=%i%s status=%i start_frame=%i\n", usb_get_current_frame_number(usX2Y->chip.dev), subs->endpoint, usb_pipein(urb->pipe) ? "in" : "out", urb->status, urb->start_frame);
+		snd_printdd("hcd_frame=%i ep=%i%s status=%i start_frame=%i\n",
+			    usb_get_current_frame_number(usX2Y->chip.dev),
+			    subs->endpoint, usb_pipein(urb->pipe) ? "in" : "out",
+			    urb->status, urb->start_frame);
 		return;
 	}
 	if (unlikely(urb->status)) {
@@ -313,10 +329,12 @@
 		return;
 	}
 	{
-		snd_usX2Y_substream_t *capsubs = usX2Y->subs[SNDRV_PCM_STREAM_CAPTURE],
+		struct snd_usX2Y_substream *capsubs = usX2Y->subs[SNDRV_PCM_STREAM_CAPTURE],
 			*playbacksubs = usX2Y->subs[SNDRV_PCM_STREAM_PLAYBACK];
-		if (capsubs->completed_urb && atomic_read(&capsubs->state) >= state_PREPARED &&
-		    (playbacksubs->completed_urb || atomic_read(&playbacksubs->state) < state_PREPARED)) {
+		if (capsubs->completed_urb &&
+		    atomic_read(&capsubs->state) >= state_PREPARED &&
+		    (playbacksubs->completed_urb ||
+		     atomic_read(&playbacksubs->state) < state_PREPARED)) {
 			if (!usX2Y_usbframe_complete(capsubs, playbacksubs, urb->start_frame)) {
 				if (nr_of_packs() <= urb->start_frame &&
 				    urb->start_frame <= (2 * nr_of_packs() - 1))	// uhci and ohci
@@ -331,11 +349,12 @@
 	}
 }
 
-static void usX2Y_urbs_set_complete(usX2Ydev_t * usX2Y, void (*complete)(struct urb *, struct pt_regs *))
+static void usX2Y_urbs_set_complete(struct usX2Ydev * usX2Y,
+				    void (*complete)(struct urb *, struct pt_regs *))
 {
 	int s, u;
 	for (s = 0; s < 4; s++) {
-		snd_usX2Y_substream_t *subs = usX2Y->subs[s];
+		struct snd_usX2Y_substream *subs = usX2Y->subs[s];
 		if (NULL != subs)
 			for (u = 0; u < NRURBS; u++) {
 				struct urb * urb = subs->urb[u];
@@ -345,7 +364,7 @@
 	}
 }
 
-static void usX2Y_subs_startup_finish(usX2Ydev_t * usX2Y)
+static void usX2Y_subs_startup_finish(struct usX2Ydev * usX2Y)
 {
 	usX2Y_urbs_set_complete(usX2Y, i_usX2Y_urb_complete);
 	usX2Y->prepare_subs = NULL;
@@ -353,9 +372,9 @@
 
 static void i_usX2Y_subs_startup(struct urb *urb, struct pt_regs *regs)
 {
-	snd_usX2Y_substream_t *subs = (snd_usX2Y_substream_t*)urb->context;
-	usX2Ydev_t *usX2Y = subs->usX2Y;
-	snd_usX2Y_substream_t *prepare_subs = usX2Y->prepare_subs;
+	struct snd_usX2Y_substream *subs = urb->context;
+	struct usX2Ydev *usX2Y = subs->usX2Y;
+	struct snd_usX2Y_substream *prepare_subs = usX2Y->prepare_subs;
 	if (NULL != prepare_subs)
 		if (urb->start_frame == prepare_subs->urb[0]->start_frame) {
 			usX2Y_subs_startup_finish(usX2Y);
@@ -366,9 +385,10 @@
 	i_usX2Y_urb_complete(urb, regs);
 }
 
-static void usX2Y_subs_prepare(snd_usX2Y_substream_t *subs)
+static void usX2Y_subs_prepare(struct snd_usX2Y_substream *subs)
 {
-	snd_printdd("usX2Y_substream_prepare(%p) ep=%i urb0=%p urb1=%p\n", subs, subs->endpoint, subs->urb[0], subs->urb[1]);
+	snd_printdd("usX2Y_substream_prepare(%p) ep=%i urb0=%p urb1=%p\n",
+		    subs, subs->endpoint, subs->urb[0], subs->urb[1]);
 	/* reset the pointer */
 	subs->hwptr = 0;
 	subs->hwptr_done = 0;
@@ -376,7 +396,7 @@
 }
 
 
-static void usX2Y_urb_release(struct urb** urb, int free_tb)
+static void usX2Y_urb_release(struct urb **urb, int free_tb)
 {
 	if (*urb) {
 		usb_kill_urb(*urb);
@@ -389,12 +409,13 @@
 /*
  * release a substreams urbs
  */
-static void usX2Y_urbs_release(snd_usX2Y_substream_t *subs)
+static void usX2Y_urbs_release(struct snd_usX2Y_substream *subs)
 {
 	int i;
 	snd_printdd("usX2Y_urbs_release() %i\n", subs->endpoint);
 	for (i = 0; i < NRURBS; i++)
-		usX2Y_urb_release(subs->urb + i, subs != subs->usX2Y->subs[SNDRV_PCM_STREAM_PLAYBACK]);
+		usX2Y_urb_release(subs->urb + i,
+				  subs != subs->usX2Y->subs[SNDRV_PCM_STREAM_PLAYBACK]);
 
 	kfree(subs->tmpbuf);
 	subs->tmpbuf = NULL;
@@ -402,7 +423,7 @@
 /*
  * initialize a substream's urbs
  */
-static int usX2Y_urbs_allocate(snd_usX2Y_substream_t *subs)
+static int usX2Y_urbs_allocate(struct snd_usX2Y_substream *subs)
 {
 	int i;
 	unsigned int pipe;
@@ -452,25 +473,25 @@
 	return 0;
 }
 
-static void usX2Y_subs_startup(snd_usX2Y_substream_t *subs)
+static void usX2Y_subs_startup(struct snd_usX2Y_substream *subs)
 {
-	usX2Ydev_t *usX2Y = subs->usX2Y;
+	struct usX2Ydev *usX2Y = subs->usX2Y;
 	usX2Y->prepare_subs = subs;
 	subs->urb[0]->start_frame = -1;
 	wmb();
 	usX2Y_urbs_set_complete(usX2Y, i_usX2Y_subs_startup);
 }
 
-static int usX2Y_urbs_start(snd_usX2Y_substream_t *subs)
+static int usX2Y_urbs_start(struct snd_usX2Y_substream *subs)
 {
 	int i, err;
-	usX2Ydev_t *usX2Y = subs->usX2Y;
+	struct usX2Ydev *usX2Y = subs->usX2Y;
 
 	if ((err = usX2Y_urbs_allocate(subs)) < 0)
 		return err;
 	subs->completed_urb = NULL;
 	for (i = 0; i < 4; i++) {
-		snd_usX2Y_substream_t *subs = usX2Y->subs[i];
+		struct snd_usX2Y_substream *subs = usX2Y->subs[i];
 		if (subs != NULL && atomic_read(&subs->state) >= state_PREPARED)
 			goto start;
 	}
@@ -521,17 +542,17 @@
 /*
  * return the current pcm pointer.  just return the hwptr_done value.
  */
-static snd_pcm_uframes_t snd_usX2Y_pcm_pointer(snd_pcm_substream_t *substream)
+static snd_pcm_uframes_t snd_usX2Y_pcm_pointer(struct snd_pcm_substream *substream)
 {
-	snd_usX2Y_substream_t *subs = (snd_usX2Y_substream_t *)substream->runtime->private_data;
+	struct snd_usX2Y_substream *subs = substream->runtime->private_data;
 	return subs->hwptr_done;
 }
 /*
  * start/stop substream
  */
-static int snd_usX2Y_pcm_trigger(snd_pcm_substream_t *substream, int cmd)
+static int snd_usX2Y_pcm_trigger(struct snd_pcm_substream *substream, int cmd)
 {
-	snd_usX2Y_substream_t *subs = (snd_usX2Y_substream_t *)substream->runtime->private_data;
+	struct snd_usX2Y_substream *subs = substream->runtime->private_data;
 
 	switch (cmd) {
 	case SNDRV_PCM_TRIGGER_START:
@@ -642,9 +663,9 @@
 };
 #define NOOF_SETRATE_URBS ARRAY_SIZE(SetRate48000)
 
-static void i_usX2Y_04Int(struct urb* urb, struct pt_regs *regs)
+static void i_usX2Y_04Int(struct urb *urb, struct pt_regs *regs)
 {
-	usX2Ydev_t*	usX2Y = urb->context;
+	struct usX2Ydev *usX2Y = urb->context;
 	
 	if (urb->status)
 		snd_printk(KERN_ERR "snd_usX2Y_04Int() urb->status=%i\n", urb->status);
@@ -652,10 +673,10 @@
 		wake_up(&usX2Y->In04WaitQueue);
 }
 
-static int usX2Y_rate_set(usX2Ydev_t *usX2Y, int rate)
+static int usX2Y_rate_set(struct usX2Ydev *usX2Y, int rate)
 {
 	int			err = 0, i;
-	snd_usX2Y_urbSeq_t	*us = NULL;
+	struct snd_usX2Y_urbSeq	*us = NULL;
 	int			*usbdata = NULL;
 	struct s_c2		*ra = rate == 48000 ? SetRate48000 : SetRate44100;
 
@@ -714,7 +735,7 @@
 }
 
 
-static int usX2Y_format_set(usX2Ydev_t *usX2Y, snd_pcm_format_t format)
+static int usX2Y_format_set(struct usX2Ydev *usX2Y, snd_pcm_format_t format)
 {
 	int alternate, err;
 	struct list_head* p;
@@ -744,27 +765,27 @@
 }
 
 
-static int snd_usX2Y_pcm_hw_params(snd_pcm_substream_t *substream,
-				   snd_pcm_hw_params_t *hw_params)
+static int snd_usX2Y_pcm_hw_params(struct snd_pcm_substream *substream,
+				   struct snd_pcm_hw_params *hw_params)
 {
 	int			err = 0;
 	unsigned int		rate = params_rate(hw_params);
 	snd_pcm_format_t	format = params_format(hw_params);
-		snd_card_t *card = substream->pstr->pcm->card;
-		struct list_head *list;
+	struct snd_card *card = substream->pstr->pcm->card;
+	struct list_head *list;
 
 	snd_printdd("snd_usX2Y_hw_params(%p, %p)\n", substream, hw_params);
 	// all pcm substreams off one usX2Y have to operate at the same rate & format
 	list_for_each(list, &card->devices) {
-		snd_device_t *dev;
-		snd_pcm_t *pcm;
+		struct snd_device *dev;
+		struct snd_pcm *pcm;
 		int s;
 		dev = snd_device(list);
 		if (dev->type != SNDRV_DEV_PCM)
 			continue;
 		pcm = dev->device_data;
 		for (s = 0; s < 2; ++s) {
-			snd_pcm_substream_t *test_substream;
+			struct snd_pcm_substream *test_substream;
 			test_substream = pcm->streams[s].substream;
 			if (test_substream && test_substream != substream  &&
 			    test_substream->runtime &&
@@ -776,7 +797,8 @@
 		}
 	}
 	if (0 > (err = snd_pcm_lib_malloc_pages(substream, params_buffer_bytes(hw_params)))) {
-		snd_printk(KERN_ERR "snd_pcm_lib_malloc_pages(%p, %i) returned %i\n", substream, params_buffer_bytes(hw_params), err);
+		snd_printk(KERN_ERR "snd_pcm_lib_malloc_pages(%p, %i) returned %i\n",
+			   substream, params_buffer_bytes(hw_params), err);
 		return err;
 	}
 	return 0;
@@ -785,15 +807,15 @@
 /*
  * free the buffer
  */
-static int snd_usX2Y_pcm_hw_free(snd_pcm_substream_t *substream)
+static int snd_usX2Y_pcm_hw_free(struct snd_pcm_substream *substream)
 {
-	snd_pcm_runtime_t *runtime = substream->runtime;
-	snd_usX2Y_substream_t *subs = (snd_usX2Y_substream_t *)runtime->private_data;
+	struct snd_pcm_runtime *runtime = substream->runtime;
+	struct snd_usX2Y_substream *subs = runtime->private_data;
 	down(&subs->usX2Y->prepare_mutex);
 	snd_printdd("snd_usX2Y_hw_free(%p)\n", substream);
 
 	if (SNDRV_PCM_STREAM_PLAYBACK == substream->stream) {
-		snd_usX2Y_substream_t *cap_subs = subs->usX2Y->subs[SNDRV_PCM_STREAM_CAPTURE];
+		struct snd_usX2Y_substream *cap_subs = subs->usX2Y->subs[SNDRV_PCM_STREAM_CAPTURE];
 		atomic_set(&subs->state, state_STOPPED);
 		usX2Y_urbs_release(subs);
 		if (!cap_subs->pcm_substream ||
@@ -804,7 +826,7 @@
 			usX2Y_urbs_release(cap_subs);
 		}
 	} else {
-		snd_usX2Y_substream_t *playback_subs = subs->usX2Y->subs[SNDRV_PCM_STREAM_PLAYBACK];
+		struct snd_usX2Y_substream *playback_subs = subs->usX2Y->subs[SNDRV_PCM_STREAM_PLAYBACK];
 		if (atomic_read(&playback_subs->state) < state_PREPARED) {
 			atomic_set(&subs->state, state_STOPPED);
 			usX2Y_urbs_release(subs);
@@ -818,12 +840,12 @@
  *
  * set format and initialize urbs
  */
-static int snd_usX2Y_pcm_prepare(snd_pcm_substream_t *substream)
+static int snd_usX2Y_pcm_prepare(struct snd_pcm_substream *substream)
 {
-	snd_pcm_runtime_t *runtime = substream->runtime;
-	snd_usX2Y_substream_t *subs = (snd_usX2Y_substream_t *)runtime->private_data;
-	usX2Ydev_t *usX2Y = subs->usX2Y;
-	snd_usX2Y_substream_t *capsubs = subs->usX2Y->subs[SNDRV_PCM_STREAM_CAPTURE];
+	struct snd_pcm_runtime *runtime = substream->runtime;
+	struct snd_usX2Y_substream *subs = runtime->private_data;
+	struct usX2Ydev *usX2Y = subs->usX2Y;
+	struct snd_usX2Y_substream *capsubs = subs->usX2Y->subs[SNDRV_PCM_STREAM_CAPTURE];
 	int err = 0;
 	snd_printdd("snd_usX2Y_pcm_prepare(%p)\n", substream);
 
@@ -851,7 +873,7 @@
 	return err;
 }
 
-static snd_pcm_hardware_t snd_usX2Y_2c =
+static struct snd_pcm_hardware snd_usX2Y_2c =
 {
 	.info =			(SNDRV_PCM_INFO_MMAP | SNDRV_PCM_INFO_INTERLEAVED |
 				 SNDRV_PCM_INFO_BLOCK_TRANSFER |
@@ -872,11 +894,11 @@
 
 
 
-static int snd_usX2Y_pcm_open(snd_pcm_substream_t *substream)
+static int snd_usX2Y_pcm_open(struct snd_pcm_substream *substream)
 {
-	snd_usX2Y_substream_t	*subs = ((snd_usX2Y_substream_t **)
+	struct snd_usX2Y_substream	*subs = ((struct snd_usX2Y_substream **)
 					 snd_pcm_substream_chip(substream))[substream->stream];
-	snd_pcm_runtime_t	*runtime = substream->runtime;
+	struct snd_pcm_runtime	*runtime = substream->runtime;
 
 	if (subs->usX2Y->chip_status & USX2Y_STAT_CHIP_MMAP_PCM_URBS)
 		return -EBUSY;
@@ -890,19 +912,18 @@
 
 
 
-static int snd_usX2Y_pcm_close(snd_pcm_substream_t *substream)
+static int snd_usX2Y_pcm_close(struct snd_pcm_substream *substream)
 {
-	snd_pcm_runtime_t *runtime = substream->runtime;
-	snd_usX2Y_substream_t *subs = (snd_usX2Y_substream_t *)runtime->private_data;
-	int err = 0;
+	struct snd_pcm_runtime *runtime = substream->runtime;
+	struct snd_usX2Y_substream *subs = runtime->private_data;
 
 	subs->pcm_substream = NULL;
 
-	return err;
+	return 0;
 }
 
 
-static snd_pcm_ops_t snd_usX2Y_pcm_ops = 
+static struct snd_pcm_ops snd_usX2Y_pcm_ops = 
 {
 	.open =		snd_usX2Y_pcm_open,
 	.close =	snd_usX2Y_pcm_close,
@@ -918,7 +939,7 @@
 /*
  * free a usb stream instance
  */
-static void usX2Y_audio_stream_free(snd_usX2Y_substream_t **usX2Y_substream)
+static void usX2Y_audio_stream_free(struct snd_usX2Y_substream **usX2Y_substream)
 {
 	if (NULL != usX2Y_substream[SNDRV_PCM_STREAM_PLAYBACK]) {
 		kfree(usX2Y_substream[SNDRV_PCM_STREAM_PLAYBACK]);
@@ -928,23 +949,23 @@
 	usX2Y_substream[SNDRV_PCM_STREAM_CAPTURE] = NULL;
 }
 
-static void snd_usX2Y_pcm_private_free(snd_pcm_t *pcm)
+static void snd_usX2Y_pcm_private_free(struct snd_pcm *pcm)
 {
-	snd_usX2Y_substream_t **usX2Y_stream = pcm->private_data;
+	struct snd_usX2Y_substream **usX2Y_stream = pcm->private_data;
 	if (usX2Y_stream)
 		usX2Y_audio_stream_free(usX2Y_stream);
 }
 
-static int usX2Y_audio_stream_new(snd_card_t *card, int playback_endpoint, int capture_endpoint)
+static int usX2Y_audio_stream_new(struct snd_card *card, int playback_endpoint, int capture_endpoint)
 {
-	snd_pcm_t *pcm;
+	struct snd_pcm *pcm;
 	int err, i;
-	snd_usX2Y_substream_t **usX2Y_substream =
+	struct snd_usX2Y_substream **usX2Y_substream =
 		usX2Y(card)->subs + 2 * usX2Y(card)->chip.pcm_devs;
 
 	for (i = playback_endpoint ? SNDRV_PCM_STREAM_PLAYBACK : SNDRV_PCM_STREAM_CAPTURE;
 	     i <= SNDRV_PCM_STREAM_CAPTURE; ++i) {
-		usX2Y_substream[i] = kzalloc(sizeof(snd_usX2Y_substream_t), GFP_KERNEL);
+		usX2Y_substream[i] = kzalloc(sizeof(struct snd_usX2Y_substream), GFP_KERNEL);
 		if (NULL == usX2Y_substream[i]) {
 			snd_printk(KERN_ERR "cannot malloc\n");
 			return -ENOMEM;
@@ -994,7 +1015,7 @@
 /*
  * create a chip instance and set its names.
  */
-int usX2Y_audio_create(snd_card_t* card)
+int usX2Y_audio_create(struct snd_card *card)
 {
 	int err = 0;
 	
diff --git a/sound/usb/usx2y/usx2yhwdeppcm.c b/sound/usb/usx2y/usx2yhwdeppcm.c
index c5379280..796a7dce 100644
--- a/sound/usb/usx2y/usx2yhwdeppcm.c
+++ b/sound/usb/usx2y/usx2yhwdeppcm.c
@@ -58,12 +58,12 @@
 #include <sound/hwdep.h>
 
 
-static int usX2Y_usbpcm_urb_capt_retire(snd_usX2Y_substream_t *subs)
+static int usX2Y_usbpcm_urb_capt_retire(struct snd_usX2Y_substream *subs)
 {
 	struct urb	*urb = subs->completed_urb;
-	snd_pcm_runtime_t *runtime = subs->pcm_substream->runtime;
+	struct snd_pcm_runtime *runtime = subs->pcm_substream->runtime;
 	int 		i, lens = 0, hwptr_done = subs->hwptr_done;
-	usX2Ydev_t	*usX2Y = subs->usX2Y;
+	struct usX2Ydev	*usX2Y = subs->usX2Y;
 	if (0 > usX2Y->hwdep_pcm_shm->capture_iso_start) { //FIXME
 		int head = usX2Y->hwdep_pcm_shm->captured_iso_head + 1;
 		if (head >= ARRAY_SIZE(usX2Y->hwdep_pcm_shm->captured_iso))
@@ -90,7 +90,8 @@
 	return 0;
 }
 
-static inline int usX2Y_iso_frames_per_buffer(snd_pcm_runtime_t *runtime, usX2Ydev_t * usX2Y)
+static inline int usX2Y_iso_frames_per_buffer(struct snd_pcm_runtime *runtime,
+					      struct usX2Ydev * usX2Y)
 {
 	return (runtime->buffer_size * 1000) / usX2Y->rate + 1;	//FIXME: so far only correct period_size == 2^x ?
 }
@@ -105,13 +106,13 @@
  * it directly from the buffer.  thus the data is once copied to
  * a temporary buffer and urb points to that.
  */
-static int usX2Y_hwdep_urb_play_prepare(snd_usX2Y_substream_t *subs,
-				  struct urb *urb)
+static int usX2Y_hwdep_urb_play_prepare(struct snd_usX2Y_substream *subs,
+					struct urb *urb)
 {
 	int count, counts, pack;
-	usX2Ydev_t *usX2Y = subs->usX2Y;
+	struct usX2Ydev *usX2Y = subs->usX2Y;
 	struct snd_usX2Y_hwdep_pcm_shm *shm = usX2Y->hwdep_pcm_shm;
-	snd_pcm_runtime_t *runtime = subs->pcm_substream->runtime;
+	struct snd_pcm_runtime *runtime = subs->pcm_substream->runtime;
 
 	if (0 > shm->playback_iso_start) {
 		shm->playback_iso_start = shm->captured_iso_head -
@@ -144,13 +145,14 @@
 }
 
 
-static inline void usX2Y_usbpcm_urb_capt_iso_advance(snd_usX2Y_substream_t *subs, struct urb *urb)
+static inline void usX2Y_usbpcm_urb_capt_iso_advance(struct snd_usX2Y_substream *subs,
+						     struct urb *urb)
 {
 	int pack;
 	for (pack = 0; pack < nr_of_packs(); ++pack) {
 		struct usb_iso_packet_descriptor *desc = urb->iso_frame_desc + pack;
 		if (NULL != subs) {
-			snd_usX2Y_hwdep_pcm_shm_t *shm = subs->usX2Y->hwdep_pcm_shm;
+			struct snd_usX2Y_hwdep_pcm_shm *shm = subs->usX2Y->hwdep_pcm_shm;
 			int head = shm->captured_iso_head + 1;
 			if (head >= ARRAY_SIZE(shm->captured_iso))
 				head = 0;
@@ -166,9 +168,10 @@
 	}
 }
 
-static inline int usX2Y_usbpcm_usbframe_complete(snd_usX2Y_substream_t *capsubs,
-					   snd_usX2Y_substream_t *capsubs2,
-					   snd_usX2Y_substream_t *playbacksubs, int frame)
+static inline int usX2Y_usbpcm_usbframe_complete(struct snd_usX2Y_substream *capsubs,
+						 struct snd_usX2Y_substream *capsubs2,
+						 struct snd_usX2Y_substream *playbacksubs,
+						 int frame)
 {
 	int err, state;
 	struct urb *urb = playbacksubs->completed_urb;
@@ -225,12 +228,15 @@
 
 static void i_usX2Y_usbpcm_urb_complete(struct urb *urb, struct pt_regs *regs)
 {
-	snd_usX2Y_substream_t *subs = (snd_usX2Y_substream_t*)urb->context;
-	usX2Ydev_t *usX2Y = subs->usX2Y;
-	snd_usX2Y_substream_t *capsubs, *capsubs2, *playbacksubs;
+	struct snd_usX2Y_substream *subs = urb->context;
+	struct usX2Ydev *usX2Y = subs->usX2Y;
+	struct snd_usX2Y_substream *capsubs, *capsubs2, *playbacksubs;
 
 	if (unlikely(atomic_read(&subs->state) < state_PREPARED)) {
-		snd_printdd("hcd_frame=%i ep=%i%s status=%i start_frame=%i\n", usb_get_current_frame_number(usX2Y->chip.dev), subs->endpoint, usb_pipein(urb->pipe) ? "in" : "out", urb->status, urb->start_frame);
+		snd_printdd("hcd_frame=%i ep=%i%s status=%i start_frame=%i\n",
+			    usb_get_current_frame_number(usX2Y->chip.dev),
+			    subs->endpoint, usb_pipein(urb->pipe) ? "in" : "out",
+			    urb->status, urb->start_frame);
 		return;
 	}
 	if (unlikely(urb->status)) {
@@ -264,7 +270,7 @@
 }
 
 
-static void usX2Y_hwdep_urb_release(struct urb** urb)
+static void usX2Y_hwdep_urb_release(struct urb **urb)
 {
 	usb_kill_urb(*urb);
 	usb_free_urb(*urb);
@@ -274,7 +280,7 @@
 /*
  * release a substream
  */
-static void usX2Y_usbpcm_urbs_release(snd_usX2Y_substream_t *subs)
+static void usX2Y_usbpcm_urbs_release(struct snd_usX2Y_substream *subs)
 {
 	int i;
 	snd_printdd("snd_usX2Y_urbs_release() %i\n", subs->endpoint);
@@ -282,7 +288,7 @@
 		usX2Y_hwdep_urb_release(subs->urb + i);
 }
 
-static void usX2Y_usbpcm_subs_startup_finish(usX2Ydev_t * usX2Y)
+static void usX2Y_usbpcm_subs_startup_finish(struct usX2Ydev * usX2Y)
 {
 	usX2Y_urbs_set_complete(usX2Y, i_usX2Y_usbpcm_urb_complete);
 	usX2Y->prepare_subs = NULL;
@@ -290,14 +296,14 @@
 
 static void i_usX2Y_usbpcm_subs_startup(struct urb *urb, struct pt_regs *regs)
 {
-	snd_usX2Y_substream_t *subs = (snd_usX2Y_substream_t*)urb->context;
-	usX2Ydev_t *usX2Y = subs->usX2Y;
-	snd_usX2Y_substream_t *prepare_subs = usX2Y->prepare_subs;
+	struct snd_usX2Y_substream *subs = urb->context;
+	struct usX2Ydev *usX2Y = subs->usX2Y;
+	struct snd_usX2Y_substream *prepare_subs = usX2Y->prepare_subs;
 	if (NULL != prepare_subs &&
 	    urb->start_frame == prepare_subs->urb[0]->start_frame) {
 		atomic_inc(&prepare_subs->state);
 		if (prepare_subs == usX2Y->subs[SNDRV_PCM_STREAM_CAPTURE]) {
-			snd_usX2Y_substream_t *cap_subs2 = usX2Y->subs[SNDRV_PCM_STREAM_CAPTURE + 2];
+			struct snd_usX2Y_substream *cap_subs2 = usX2Y->subs[SNDRV_PCM_STREAM_CAPTURE + 2];
 			if (cap_subs2 != NULL)
 				atomic_inc(&cap_subs2->state);
 		}
@@ -311,7 +317,7 @@
 /*
  * initialize a substream's urbs
  */
-static int usX2Y_usbpcm_urbs_allocate(snd_usX2Y_substream_t *subs)
+static int usX2Y_usbpcm_urbs_allocate(struct snd_usX2Y_substream *subs)
 {
 	int i;
 	unsigned int pipe;
@@ -355,16 +361,16 @@
 /*
  * free the buffer
  */
-static int snd_usX2Y_usbpcm_hw_free(snd_pcm_substream_t *substream)
+static int snd_usX2Y_usbpcm_hw_free(struct snd_pcm_substream *substream)
 {
-	snd_pcm_runtime_t *runtime = substream->runtime;
-	snd_usX2Y_substream_t *subs = (snd_usX2Y_substream_t *)runtime->private_data,
+	struct snd_pcm_runtime *runtime = substream->runtime;
+	struct snd_usX2Y_substream *subs = runtime->private_data,
 		*cap_subs2 = subs->usX2Y->subs[SNDRV_PCM_STREAM_CAPTURE + 2];
 	down(&subs->usX2Y->prepare_mutex);
 	snd_printdd("snd_usX2Y_usbpcm_hw_free(%p)\n", substream);
 
 	if (SNDRV_PCM_STREAM_PLAYBACK == substream->stream) {
-		snd_usX2Y_substream_t *cap_subs = subs->usX2Y->subs[SNDRV_PCM_STREAM_CAPTURE];
+		struct snd_usX2Y_substream *cap_subs = subs->usX2Y->subs[SNDRV_PCM_STREAM_CAPTURE];
 		atomic_set(&subs->state, state_STOPPED);
 		usX2Y_usbpcm_urbs_release(subs);
 		if (!cap_subs->pcm_substream ||
@@ -379,7 +385,7 @@
 				usX2Y_usbpcm_urbs_release(cap_subs2);
 		}
 	} else {
-		snd_usX2Y_substream_t *playback_subs = subs->usX2Y->subs[SNDRV_PCM_STREAM_PLAYBACK];
+		struct snd_usX2Y_substream *playback_subs = subs->usX2Y->subs[SNDRV_PCM_STREAM_PLAYBACK];
 		if (atomic_read(&playback_subs->state) < state_PREPARED) {
 			atomic_set(&subs->state, state_STOPPED);
 			if (NULL != cap_subs2)
@@ -393,20 +399,20 @@
 	return snd_pcm_lib_free_pages(substream);
 }
 
-static void usX2Y_usbpcm_subs_startup(snd_usX2Y_substream_t *subs)
+static void usX2Y_usbpcm_subs_startup(struct snd_usX2Y_substream *subs)
 {
-	usX2Ydev_t * usX2Y = subs->usX2Y;
+	struct usX2Ydev * usX2Y = subs->usX2Y;
 	usX2Y->prepare_subs = subs;
 	subs->urb[0]->start_frame = -1;
 	smp_wmb();	// Make shure above modifications are seen by i_usX2Y_subs_startup()
 	usX2Y_urbs_set_complete(usX2Y, i_usX2Y_usbpcm_subs_startup);
 }
 
-static int usX2Y_usbpcm_urbs_start(snd_usX2Y_substream_t *subs)
+static int usX2Y_usbpcm_urbs_start(struct snd_usX2Y_substream *subs)
 {
 	int	p, u, err,
 		stream = subs->pcm_substream->stream;
-	usX2Ydev_t *usX2Y = subs->usX2Y;
+	struct usX2Ydev *usX2Y = subs->usX2Y;
 
 	if (SNDRV_PCM_STREAM_CAPTURE == stream) {
 		usX2Y->hwdep_pcm_shm->captured_iso_head = -1;
@@ -414,7 +420,7 @@
 	}
 
 	for (p = 0; 3 >= (stream + p); p += 2) {
-		snd_usX2Y_substream_t *subs = usX2Y->subs[stream + p];
+		struct snd_usX2Y_substream *subs = usX2Y->subs[stream + p];
 		if (subs != NULL) {
 			if ((err = usX2Y_usbpcm_urbs_allocate(subs)) < 0)
 				return err;
@@ -423,7 +429,7 @@
 	}
 
 	for (p = 0; p < 4; p++) {
-		snd_usX2Y_substream_t *subs = usX2Y->subs[p];
+		struct snd_usX2Y_substream *subs = usX2Y->subs[p];
 		if (subs != NULL && atomic_read(&subs->state) >= state_PREPARED)
 			goto start;
 	}
@@ -433,7 +439,7 @@
 	usX2Y_usbpcm_subs_startup(subs);
 	for (u = 0; u < NRURBS; u++) {
 		for (p = 0; 3 >= (stream + p); p += 2) {
-			snd_usX2Y_substream_t *subs = usX2Y->subs[stream + p];
+			struct snd_usX2Y_substream *subs = usX2Y->subs[stream + p];
 			if (subs != NULL) {
 				struct urb *urb = subs->urb[u];
 				if (usb_pipein(urb->pipe)) {
@@ -482,19 +488,19 @@
  *
  * set format and initialize urbs
  */
-static int snd_usX2Y_usbpcm_prepare(snd_pcm_substream_t *substream)
+static int snd_usX2Y_usbpcm_prepare(struct snd_pcm_substream *substream)
 {
-	snd_pcm_runtime_t *runtime = substream->runtime;
-	snd_usX2Y_substream_t *subs = (snd_usX2Y_substream_t *)runtime->private_data;
-	usX2Ydev_t *usX2Y = subs->usX2Y;
-	snd_usX2Y_substream_t *capsubs = subs->usX2Y->subs[SNDRV_PCM_STREAM_CAPTURE];
+	struct snd_pcm_runtime *runtime = substream->runtime;
+	struct snd_usX2Y_substream *subs = runtime->private_data;
+	struct usX2Ydev *usX2Y = subs->usX2Y;
+	struct snd_usX2Y_substream *capsubs = subs->usX2Y->subs[SNDRV_PCM_STREAM_CAPTURE];
 	int err = 0;
 	snd_printdd("snd_usX2Y_pcm_prepare(%p)\n", substream);
 
 	if (NULL == usX2Y->hwdep_pcm_shm) {
-		if (NULL == (usX2Y->hwdep_pcm_shm = snd_malloc_pages(sizeof(snd_usX2Y_hwdep_pcm_shm_t), GFP_KERNEL)))
+		if (NULL == (usX2Y->hwdep_pcm_shm = snd_malloc_pages(sizeof(struct snd_usX2Y_hwdep_pcm_shm), GFP_KERNEL)))
 			return -ENOMEM;
-		memset(usX2Y->hwdep_pcm_shm, 0, sizeof(snd_usX2Y_hwdep_pcm_shm_t));
+		memset(usX2Y->hwdep_pcm_shm, 0, sizeof(struct snd_usX2Y_hwdep_pcm_shm));
 	}
 
 	down(&usX2Y->prepare_mutex);
@@ -508,7 +514,8 @@
 		if (usX2Y->rate != runtime->rate)
 			if ((err = usX2Y_rate_set(usX2Y, runtime->rate)) < 0)
 				goto up_prepare_mutex;
-		snd_printdd("starting capture pipe for %s\n", subs == capsubs ? "self" : "playpipe");
+		snd_printdd("starting capture pipe for %s\n", subs == capsubs ?
+			    "self" : "playpipe");
 		if (0 > (err = usX2Y_usbpcm_urbs_start(capsubs)))
 			goto up_prepare_mutex;
 	}
@@ -516,8 +523,12 @@
 	if (subs != capsubs) {
 		usX2Y->hwdep_pcm_shm->playback_iso_start = -1;
 		if (atomic_read(&subs->state) < state_PREPARED) {
-			while (usX2Y_iso_frames_per_buffer(runtime, usX2Y) > usX2Y->hwdep_pcm_shm->captured_iso_frames) {
-				snd_printd("Wait: iso_frames_per_buffer=%i,captured_iso_frames=%i\n", usX2Y_iso_frames_per_buffer(runtime, usX2Y), usX2Y->hwdep_pcm_shm->captured_iso_frames);
+			while (usX2Y_iso_frames_per_buffer(runtime, usX2Y) >
+			       usX2Y->hwdep_pcm_shm->captured_iso_frames) {
+				snd_printdd("Wait: iso_frames_per_buffer=%i,"
+					    "captured_iso_frames=%i\n",
+					    usX2Y_iso_frames_per_buffer(runtime, usX2Y),
+					    usX2Y->hwdep_pcm_shm->captured_iso_frames);
 				if (msleep_interruptible(10)) {
 					err = -ERESTARTSYS;
 					goto up_prepare_mutex;
@@ -526,7 +537,9 @@
 			if (0 > (err = usX2Y_usbpcm_urbs_start(subs)))
 				goto up_prepare_mutex;
 		}
-		snd_printd("Ready: iso_frames_per_buffer=%i,captured_iso_frames=%i\n", usX2Y_iso_frames_per_buffer(runtime, usX2Y), usX2Y->hwdep_pcm_shm->captured_iso_frames);
+		snd_printdd("Ready: iso_frames_per_buffer=%i,captured_iso_frames=%i\n",
+			    usX2Y_iso_frames_per_buffer(runtime, usX2Y),
+			    usX2Y->hwdep_pcm_shm->captured_iso_frames);
 	} else
 		usX2Y->hwdep_pcm_shm->capture_iso_start = -1;
 
@@ -535,7 +548,7 @@
 	return err;
 }
 
-static snd_pcm_hardware_t snd_usX2Y_4c =
+static struct snd_pcm_hardware snd_usX2Y_4c =
 {
 	.info =			(SNDRV_PCM_INFO_MMAP | SNDRV_PCM_INFO_INTERLEAVED |
 				 SNDRV_PCM_INFO_BLOCK_TRANSFER |
@@ -556,11 +569,11 @@
 
 
 
-static int snd_usX2Y_usbpcm_open(snd_pcm_substream_t *substream)
+static int snd_usX2Y_usbpcm_open(struct snd_pcm_substream *substream)
 {
-	snd_usX2Y_substream_t	*subs = ((snd_usX2Y_substream_t **)
+	struct snd_usX2Y_substream	*subs = ((struct snd_usX2Y_substream **)
 					 snd_pcm_substream_chip(substream))[substream->stream];
-	snd_pcm_runtime_t	*runtime = substream->runtime;
+	struct snd_pcm_runtime	*runtime = substream->runtime;
 
 	if (!(subs->usX2Y->chip_status & USX2Y_STAT_CHIP_MMAP_PCM_URBS))
 		return -EBUSY;
@@ -574,17 +587,17 @@
 }
 
 
-static int snd_usX2Y_usbpcm_close(snd_pcm_substream_t *substream)
+static int snd_usX2Y_usbpcm_close(struct snd_pcm_substream *substream)
 {
-	snd_pcm_runtime_t *runtime = substream->runtime;
-	snd_usX2Y_substream_t *subs = (snd_usX2Y_substream_t *)runtime->private_data;
+	struct snd_pcm_runtime *runtime = substream->runtime;
+	struct snd_usX2Y_substream *subs = runtime->private_data;
 
 	subs->pcm_substream = NULL;
 	return 0;
 }
 
 
-static snd_pcm_ops_t snd_usX2Y_usbpcm_ops = 
+static struct snd_pcm_ops snd_usX2Y_usbpcm_ops = 
 {
 	.open =		snd_usX2Y_usbpcm_open,
 	.close =	snd_usX2Y_usbpcm_close,
@@ -597,11 +610,11 @@
 };
 
 
-static int usX2Y_pcms_lock_check(snd_card_t *card)
+static int usX2Y_pcms_lock_check(struct snd_card *card)
 {
 	struct list_head *list;
-	snd_device_t *dev;
-	snd_pcm_t *pcm;
+	struct snd_device *dev;
+	struct snd_pcm *pcm;
 	int err = 0;
 	list_for_each(list, &card->devices) {
 		dev = snd_device(list);
@@ -617,7 +630,7 @@
 			continue;
 		pcm = dev->device_data;
 		for (s = 0; s < 2; ++s) {
-			snd_pcm_substream_t *substream;
+			struct snd_pcm_substream *substream;
 			substream = pcm->streams[s].substream;
 			if (substream && substream->ffile != NULL)
 				err = -EBUSY;
@@ -627,11 +640,11 @@
 }
 
 
-static void usX2Y_pcms_unlock(snd_card_t *card)
+static void usX2Y_pcms_unlock(struct snd_card *card)
 {
 	struct list_head *list;
-	snd_device_t *dev;
-	snd_pcm_t *pcm;
+	struct snd_device *dev;
+	struct snd_pcm *pcm;
 	list_for_each(list, &card->devices) {
 		dev = snd_device(list);
 		if (dev->type != SNDRV_DEV_PCM)
@@ -642,10 +655,10 @@
 }
 
 
-static int snd_usX2Y_hwdep_pcm_open(snd_hwdep_t *hw, struct file *file)
+static int snd_usX2Y_hwdep_pcm_open(struct snd_hwdep *hw, struct file *file)
 {
 	// we need to be the first 
-	snd_card_t *card = hw->card;
+	struct snd_card *card = hw->card;
 	int err = usX2Y_pcms_lock_check(card);
 	if (0 == err)
 		usX2Y(card)->chip_status |= USX2Y_STAT_CHIP_MMAP_PCM_URBS;
@@ -654,9 +667,9 @@
 }
 
 
-static int snd_usX2Y_hwdep_pcm_release(snd_hwdep_t *hw, struct file *file)
+static int snd_usX2Y_hwdep_pcm_release(struct snd_hwdep *hw, struct file *file)
 {
-	snd_card_t *card = hw->card;
+	struct snd_card *card = hw->card;
 	int err = usX2Y_pcms_lock_check(card);
 	if (0 == err)
 		usX2Y(hw->card)->chip_status &= ~USX2Y_STAT_CHIP_MMAP_PCM_URBS;
@@ -684,7 +697,7 @@
 	offset = area->vm_pgoff << PAGE_SHIFT;
 	offset += address - area->vm_start;
 	snd_assert((offset % PAGE_SIZE) == 0, return NOPAGE_OOM);
-	vaddr = (char*)((usX2Ydev_t*)area->vm_private_data)->hwdep_pcm_shm + offset;
+	vaddr = (char*)((struct usX2Ydev *)area->vm_private_data)->hwdep_pcm_shm + offset;
 	page = virt_to_page(vaddr);
 	get_page(page);
 
@@ -702,17 +715,17 @@
 };
 
 
-static int snd_usX2Y_hwdep_pcm_mmap(snd_hwdep_t * hw, struct file *filp, struct vm_area_struct *area)
+static int snd_usX2Y_hwdep_pcm_mmap(struct snd_hwdep * hw, struct file *filp, struct vm_area_struct *area)
 {
 	unsigned long	size = (unsigned long)(area->vm_end - area->vm_start);
-	usX2Ydev_t	*usX2Y = hw->private_data;
+	struct usX2Ydev	*usX2Y = hw->private_data;
 
 	if (!(usX2Y->chip_status & USX2Y_STAT_CHIP_INIT))
 		return -EBUSY;
 
 	/* if userspace tries to mmap beyond end of our buffer, fail */ 
-	if (size > PAGE_ALIGN(sizeof(snd_usX2Y_hwdep_pcm_shm_t))) {
-		snd_printd("%lu > %lu\n", size, (unsigned long)sizeof(snd_usX2Y_hwdep_pcm_shm_t)); 
+	if (size > PAGE_ALIGN(sizeof(struct snd_usX2Y_hwdep_pcm_shm))) {
+		snd_printd("%lu > %lu\n", size, (unsigned long)sizeof(struct snd_usX2Y_hwdep_pcm_shm)); 
 		return -EINVAL;
 	}
 
@@ -726,19 +739,19 @@
 }
 
 
-static void snd_usX2Y_hwdep_pcm_private_free(snd_hwdep_t *hwdep)
+static void snd_usX2Y_hwdep_pcm_private_free(struct snd_hwdep *hwdep)
 {
-	usX2Ydev_t *usX2Y = hwdep->private_data;
+	struct usX2Ydev *usX2Y = hwdep->private_data;
 	if (NULL != usX2Y->hwdep_pcm_shm)
-		snd_free_pages(usX2Y->hwdep_pcm_shm, sizeof(snd_usX2Y_hwdep_pcm_shm_t));
+		snd_free_pages(usX2Y->hwdep_pcm_shm, sizeof(struct snd_usX2Y_hwdep_pcm_shm));
 }
 
 
-int usX2Y_hwdep_pcm_new(snd_card_t* card)
+int usX2Y_hwdep_pcm_new(struct snd_card *card)
 {
 	int err;
-	snd_hwdep_t *hw;
-	snd_pcm_t *pcm;
+	struct snd_hwdep *hw;
+	struct snd_pcm *pcm;
 	struct usb_device *dev = usX2Y(card)->chip.dev;
 	if (1 != nr_of_packs())
 		return 0;
@@ -783,7 +796,7 @@
 
 #else
 
-int usX2Y_hwdep_pcm_new(snd_card_t* card)
+int usX2Y_hwdep_pcm_new(struct snd_card *card)
 {
 	return 0;
 }
diff --git a/sound/usb/usx2y/usx2yhwdeppcm.h b/sound/usb/usx2y/usx2yhwdeppcm.h
index d68f0cb..c3382fd 100644
--- a/sound/usb/usx2y/usx2yhwdeppcm.h
+++ b/sound/usb/usx2y/usx2yhwdeppcm.h
@@ -18,4 +18,3 @@
 	volatile unsigned captured_iso_frames;
 	int capture_iso_start;
 };
-typedef struct snd_usX2Y_hwdep_pcm_shm snd_usX2Y_hwdep_pcm_shm_t;