ALSA: usb-audio: move ua101 driver

As part of the USB audio code cleanup, move the non-standard ua101
driver out of the way.

Signed-off-by: Daniel Mack <daniel@caiaq.de>
Cc: Clemens Ladisch <clemens@ladisch.de>
Signed-off-by: Takashi Iwai <tiwai@suse.de>

1 files changed, 0 insertions, 1387 deletions

diff --git a/sound/usb/ua101.c b/sound/usb/ua101.c
deleted file mode 100644
index 3d458d3b996..00000000000
--- a/sound/usb/ua101.c
+++ /dev/null
@@ -1,1387 +0,0 @@
-/*
- * Edirol UA-101/UA-1000 driver
- * Copyright (c) Clemens Ladisch <clemens@ladisch.de>
- *
- * This driver is free software: you can redistribute it and/or modify
- * it under the terms of the GNU General Public License, version 2.
- *
- * This driver is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this driver.  If not, see <http://www.gnu.org/licenses/>.
- */
-
-#include <linux/init.h>
-#include <linux/module.h>
-#include <linux/slab.h>
-#include <linux/usb.h>
-#include <linux/usb/audio.h>
-#include <sound/core.h>
-#include <sound/initval.h>
-#include <sound/pcm.h>
-#include <sound/pcm_params.h>
-#include "usbaudio.h"
-
-MODULE_DESCRIPTION("Edirol UA-101/1000 driver");
-MODULE_AUTHOR("Clemens Ladisch <clemens@ladisch.de>");
-MODULE_LICENSE("GPL v2");
-MODULE_SUPPORTED_DEVICE("{{Edirol,UA-101},{Edirol,UA-1000}}");
-
-/*
- * Should not be lower than the minimum scheduling delay of the host
- * controller.  Some Intel controllers need more than one frame; as long as
- * that driver doesn't tell us about this, use 1.5 frames just to be sure.
- */
-#define MIN_QUEUE_LENGTH	12
-/* Somewhat random. */
-#define MAX_QUEUE_LENGTH	30
-/*
- * This magic value optimizes memory usage efficiency for the UA-101's packet
- * sizes at all sample rates, taking into account the stupid cache pool sizes
- * that usb_buffer_alloc() uses.
- */
-#define DEFAULT_QUEUE_LENGTH	21
-
-#define MAX_PACKET_SIZE		672 /* hardware specific */
-#define MAX_MEMORY_BUFFERS	DIV_ROUND_UP(MAX_QUEUE_LENGTH, \
-					     PAGE_SIZE / MAX_PACKET_SIZE)
-
-static int index[SNDRV_CARDS] = SNDRV_DEFAULT_IDX;
-static char *id[SNDRV_CARDS] = SNDRV_DEFAULT_STR;
-static int enable[SNDRV_CARDS] = SNDRV_DEFAULT_ENABLE_PNP;
-static unsigned int queue_length = 21;
-
-module_param_array(index, int, NULL, 0444);
-MODULE_PARM_DESC(index, "card index");
-module_param_array(id, charp, NULL, 0444);
-MODULE_PARM_DESC(id, "ID string");
-module_param_array(enable, bool, NULL, 0444);
-MODULE_PARM_DESC(enable, "enable card");
-module_param(queue_length, uint, 0644);
-MODULE_PARM_DESC(queue_length, "USB queue length in microframes, "
-		 __stringify(MIN_QUEUE_LENGTH)"-"__stringify(MAX_QUEUE_LENGTH));
-
-enum {
-	INTF_PLAYBACK,
-	INTF_CAPTURE,
-	INTF_MIDI,
-
-	INTF_COUNT
-};
-
-/* bits in struct ua101::states */
-enum {
-	USB_CAPTURE_RUNNING,
-	USB_PLAYBACK_RUNNING,
-	ALSA_CAPTURE_OPEN,
-	ALSA_PLAYBACK_OPEN,
-	ALSA_CAPTURE_RUNNING,
-	ALSA_PLAYBACK_RUNNING,
-	CAPTURE_URB_COMPLETED,
-	PLAYBACK_URB_COMPLETED,
-	DISCONNECTED,
-};
-
-struct ua101 {
-	struct usb_device *dev;
-	struct snd_card *card;
-	struct usb_interface *intf[INTF_COUNT];
-	int card_index;
-	struct snd_pcm *pcm;
-	struct list_head midi_list;
-	u64 format_bit;
-	unsigned int rate;
-	unsigned int packets_per_second;
-	spinlock_t lock;
-	struct mutex mutex;
-	unsigned long states;
-
-	/* FIFO to synchronize playback rate to capture rate */
-	unsigned int rate_feedback_start;
-	unsigned int rate_feedback_count;
-	u8 rate_feedback[MAX_QUEUE_LENGTH];
-
-	struct list_head ready_playback_urbs;
-	struct tasklet_struct playback_tasklet;
-	wait_queue_head_t alsa_capture_wait;
-	wait_queue_head_t rate_feedback_wait;
-	wait_queue_head_t alsa_playback_wait;
-	struct ua101_stream {
-		struct snd_pcm_substream *substream;
-		unsigned int usb_pipe;
-		unsigned int channels;
-		unsigned int frame_bytes;
-		unsigned int max_packet_bytes;
-		unsigned int period_pos;
-		unsigned int buffer_pos;
-		unsigned int queue_length;
-		struct ua101_urb {
-			struct urb urb;
-			struct usb_iso_packet_descriptor iso_frame_desc[1];
-			struct list_head ready_list;
-		} *urbs[MAX_QUEUE_LENGTH];
-		struct {
-			unsigned int size;
-			void *addr;
-			dma_addr_t dma;
-		} buffers[MAX_MEMORY_BUFFERS];
-	} capture, playback;
-};
-
-static DEFINE_MUTEX(devices_mutex);
-static unsigned int devices_used;
-static struct usb_driver ua101_driver;
-
-static void abort_alsa_playback(struct ua101 *ua);
-static void abort_alsa_capture(struct ua101 *ua);
-
-static const char *usb_error_string(int err)
-{
-	switch (err) {
-	case -ENODEV:
-		return "no device";
-	case -ENOENT:
-		return "endpoint not enabled";
-	case -EPIPE:
-		return "endpoint stalled";
-	case -ENOSPC:
-		return "not enough bandwidth";
-	case -ESHUTDOWN:
-		return "device disabled";
-	case -EHOSTUNREACH:
-		return "device suspended";
-	case -EINVAL:
-	case -EAGAIN:
-	case -EFBIG:
-	case -EMSGSIZE:
-		return "internal error";
-	default:
-		return "unknown error";
-	}
-}
-
-static void abort_usb_capture(struct ua101 *ua)
-{
-	if (test_and_clear_bit(USB_CAPTURE_RUNNING, &ua->states)) {
-		wake_up(&ua->alsa_capture_wait);
-		wake_up(&ua->rate_feedback_wait);
-	}
-}
-
-static void abort_usb_playback(struct ua101 *ua)
-{
-	if (test_and_clear_bit(USB_PLAYBACK_RUNNING, &ua->states))
-		wake_up(&ua->alsa_playback_wait);
-}
-
-static void playback_urb_complete(struct urb *usb_urb)
-{
-	struct ua101_urb *urb = (struct ua101_urb *)usb_urb;
-	struct ua101 *ua = urb->urb.context;
-	unsigned long flags;
-
-	if (unlikely(urb->urb.status == -ENOENT ||	/* unlinked */
-		     urb->urb.status == -ENODEV ||	/* device removed */
-		     urb->urb.status == -ECONNRESET ||	/* unlinked */
-		     urb->urb.status == -ESHUTDOWN)) {	/* device disabled */
-		abort_usb_playback(ua);
-		abort_alsa_playback(ua);
-		return;
-	}
-
-	if (test_bit(USB_PLAYBACK_RUNNING, &ua->states)) {
-		/* append URB to FIFO */
-		spin_lock_irqsave(&ua->lock, flags);
-		list_add_tail(&urb->ready_list, &ua->ready_playback_urbs);
-		if (ua->rate_feedback_count > 0)
-			tasklet_schedule(&ua->playback_tasklet);
-		ua->playback.substream->runtime->delay -=
-				urb->urb.iso_frame_desc[0].length /
-						ua->playback.frame_bytes;
-		spin_unlock_irqrestore(&ua->lock, flags);
-	}
-}
-
-static void first_playback_urb_complete(struct urb *urb)
-{
-	struct ua101 *ua = urb->context;
-
-	urb->complete = playback_urb_complete;
-	playback_urb_complete(urb);
-
-	set_bit(PLAYBACK_URB_COMPLETED, &ua->states);
-	wake_up(&ua->alsa_playback_wait);
-}
-
-/* copy data from the ALSA ring buffer into the URB buffer */
-static bool copy_playback_data(struct ua101_stream *stream, struct urb *urb,
-			       unsigned int frames)
-{
-	struct snd_pcm_runtime *runtime;
-	unsigned int frame_bytes, frames1;
-	const u8 *source;
-
-	runtime = stream->substream->runtime;
-	frame_bytes = stream->frame_bytes;
-	source = runtime->dma_area + stream->buffer_pos * frame_bytes;
-	if (stream->buffer_pos + frames <= runtime->buffer_size) {
-		memcpy(urb->transfer_buffer, source, frames * frame_bytes);
-	} else {
-		/* wrap around at end of ring buffer */
-		frames1 = runtime->buffer_size - stream->buffer_pos;
-		memcpy(urb->transfer_buffer, source, frames1 * frame_bytes);
-		memcpy(urb->transfer_buffer + frames1 * frame_bytes,
-		       runtime->dma_area, (frames - frames1) * frame_bytes);
-	}
-
-	stream->buffer_pos += frames;
-	if (stream->buffer_pos >= runtime->buffer_size)
-		stream->buffer_pos -= runtime->buffer_size;
-	stream->period_pos += frames;
-	if (stream->period_pos >= runtime->period_size) {
-		stream->period_pos -= runtime->period_size;
-		return true;
-	}
-	return false;
-}
-
-static inline void add_with_wraparound(struct ua101 *ua,
-				       unsigned int *value, unsigned int add)
-{
-	*value += add;
-	if (*value >= ua->playback.queue_length)
-		*value -= ua->playback.queue_length;
-}
-
-static void playback_tasklet(unsigned long data)
-{
-	struct ua101 *ua = (void *)data;
-	unsigned long flags;
-	unsigned int frames;
-	struct ua101_urb *urb;
-	bool do_period_elapsed = false;
-	int err;
-
-	if (unlikely(!test_bit(USB_PLAYBACK_RUNNING, &ua->states)))
-		return;
-
-	/*
-	 * Synchronizing the playback rate to the capture rate is done by using
-	 * the same sequence of packet sizes for both streams.
-	 * Submitting a playback URB therefore requires both a ready URB and
-	 * the size of the corresponding capture packet, i.e., both playback
-	 * and capture URBs must have been completed.  Since the USB core does
-	 * not guarantee that playback and capture complete callbacks are
-	 * called alternately, we use two FIFOs for packet sizes and read URBs;
-	 * submitting playback URBs is possible as long as both FIFOs are
-	 * nonempty.
-	 */
-	spin_lock_irqsave(&ua->lock, flags);
-	while (ua->rate_feedback_count > 0 &&
-	       !list_empty(&ua->ready_playback_urbs)) {
-		/* take packet size out of FIFO */
-		frames = ua->rate_feedback[ua->rate_feedback_start];
-		add_with_wraparound(ua, &ua->rate_feedback_start, 1);
-		ua->rate_feedback_count--;
-
-		/* take URB out of FIFO */
-		urb = list_first_entry(&ua->ready_playback_urbs,
-				       struct ua101_urb, ready_list);
-		list_del(&urb->ready_list);
-
-		/* fill packet with data or silence */
-		urb->urb.iso_frame_desc[0].length =
-			frames * ua->playback.frame_bytes;
-		if (test_bit(ALSA_PLAYBACK_RUNNING, &ua->states))
-			do_period_elapsed |= copy_playback_data(&ua->playback,
-								&urb->urb,
-								frames);
-		else
-			memset(urb->urb.transfer_buffer, 0,
-			       urb->urb.iso_frame_desc[0].length);
-
-		/* and off you go ... */
-		err = usb_submit_urb(&urb->urb, GFP_ATOMIC);
-		if (unlikely(err < 0)) {
-			spin_unlock_irqrestore(&ua->lock, flags);
-			abort_usb_playback(ua);
-			abort_alsa_playback(ua);
-			dev_err(&ua->dev->dev, "USB request error %d: %s\n",
-				err, usb_error_string(err));
-			return;
-		}
-		ua->playback.substream->runtime->delay += frames;
-	}
-	spin_unlock_irqrestore(&ua->lock, flags);
-	if (do_period_elapsed)
-		snd_pcm_period_elapsed(ua->playback.substream);
-}
-
-/* copy data from the URB buffer into the ALSA ring buffer */
-static bool copy_capture_data(struct ua101_stream *stream, struct urb *urb,
-			      unsigned int frames)
-{
-	struct snd_pcm_runtime *runtime;
-	unsigned int frame_bytes, frames1;
-	u8 *dest;
-
-	runtime = stream->substream->runtime;
-	frame_bytes = stream->frame_bytes;
-	dest = runtime->dma_area + stream->buffer_pos * frame_bytes;
-	if (stream->buffer_pos + frames <= runtime->buffer_size) {
-		memcpy(dest, urb->transfer_buffer, frames * frame_bytes);
-	} else {
-		/* wrap around at end of ring buffer */
-		frames1 = runtime->buffer_size - stream->buffer_pos;
-		memcpy(dest, urb->transfer_buffer, frames1 * frame_bytes);
-		memcpy(runtime->dma_area,
-		       urb->transfer_buffer + frames1 * frame_bytes,
-		       (frames - frames1) * frame_bytes);
-	}
-
-	stream->buffer_pos += frames;
-	if (stream->buffer_pos >= runtime->buffer_size)
-		stream->buffer_pos -= runtime->buffer_size;
-	stream->period_pos += frames;
-	if (stream->period_pos >= runtime->period_size) {
-		stream->period_pos -= runtime->period_size;
-		return true;
-	}
-	return false;
-}
-
-static void capture_urb_complete(struct urb *urb)
-{
-	struct ua101 *ua = urb->context;
-	struct ua101_stream *stream = &ua->capture;
-	unsigned long flags;
-	unsigned int frames, write_ptr;
-	bool do_period_elapsed;
-	int err;
-
-	if (unlikely(urb->status == -ENOENT ||		/* unlinked */
-		     urb->status == -ENODEV ||		/* device removed */
-		     urb->status == -ECONNRESET ||	/* unlinked */
-		     urb->status == -ESHUTDOWN))	/* device disabled */
-		goto stream_stopped;
-
-	if (urb->status >= 0 && urb->iso_frame_desc[0].status >= 0)
-		frames = urb->iso_frame_desc[0].actual_length /
-			stream->frame_bytes;
-	else
-		frames = 0;
-
-	spin_lock_irqsave(&ua->lock, flags);
-
-	if (frames > 0 && test_bit(ALSA_CAPTURE_RUNNING, &ua->states))
-		do_period_elapsed = copy_capture_data(stream, urb, frames);
-	else
-		do_period_elapsed = false;
-
-	if (test_bit(USB_CAPTURE_RUNNING, &ua->states)) {
-		err = usb_submit_urb(urb, GFP_ATOMIC);
-		if (unlikely(err < 0)) {
-			spin_unlock_irqrestore(&ua->lock, flags);
-			dev_err(&ua->dev->dev, "USB request error %d: %s\n",
-				err, usb_error_string(err));
-			goto stream_stopped;
-		}
-
-		/* append packet size to FIFO */
-		write_ptr = ua->rate_feedback_start;
-		add_with_wraparound(ua, &write_ptr, ua->rate_feedback_count);
-		ua->rate_feedback[write_ptr] = frames;
-		if (ua->rate_feedback_count < ua->playback.queue_length) {
-			ua->rate_feedback_count++;
-			if (ua->rate_feedback_count ==
-						ua->playback.queue_length)
-				wake_up(&ua->rate_feedback_wait);
-		} else {
-			/*
-			 * Ring buffer overflow; this happens when the playback
-			 * stream is not running.  Throw away the oldest entry,
-			 * so that the playback stream, when it starts, sees
-			 * the most recent packet sizes.
-			 */
-			add_with_wraparound(ua, &ua->rate_feedback_start, 1);
-		}
-		if (test_bit(USB_PLAYBACK_RUNNING, &ua->states) &&
-		    !list_empty(&ua->ready_playback_urbs))
-			tasklet_schedule(&ua->playback_tasklet);
-	}
-
-	spin_unlock_irqrestore(&ua->lock, flags);
-
-	if (do_period_elapsed)
-		snd_pcm_period_elapsed(stream->substream);
-
-	return;
-
-stream_stopped:
-	abort_usb_playback(ua);
-	abort_usb_capture(ua);
-	abort_alsa_playback(ua);
-	abort_alsa_capture(ua);
-}
-
-static void first_capture_urb_complete(struct urb *urb)
-{
-	struct ua101 *ua = urb->context;
-
-	urb->complete = capture_urb_complete;
-	capture_urb_complete(urb);
-
-	set_bit(CAPTURE_URB_COMPLETED, &ua->states);
-	wake_up(&ua->alsa_capture_wait);
-}
-
-static int submit_stream_urbs(struct ua101 *ua, struct ua101_stream *stream)
-{
-	unsigned int i;
-
-	for (i = 0; i < stream->queue_length; ++i) {
-		int err = usb_submit_urb(&stream->urbs[i]->urb, GFP_KERNEL);
-		if (err < 0) {
-			dev_err(&ua->dev->dev, "USB request error %d: %s\n",
-				err, usb_error_string(err));
-			return err;
-		}
-	}
-	return 0;
-}
-
-static void kill_stream_urbs(struct ua101_stream *stream)
-{
-	unsigned int i;
-
-	for (i = 0; i < stream->queue_length; ++i)
-		usb_kill_urb(&stream->urbs[i]->urb);
-}
-
-static int enable_iso_interface(struct ua101 *ua, unsigned int intf_index)
-{
-	struct usb_host_interface *alts;
-
-	alts = ua->intf[intf_index]->cur_altsetting;
-	if (alts->desc.bAlternateSetting != 1) {
-		int err = usb_set_interface(ua->dev,
-					    alts->desc.bInterfaceNumber, 1);
-		if (err < 0) {
-			dev_err(&ua->dev->dev,
-				"cannot initialize interface; error %d: %s\n",
-				err, usb_error_string(err));
-			return err;
-		}
-	}
-	return 0;
-}
-
-static void disable_iso_interface(struct ua101 *ua, unsigned int intf_index)
-{
-	struct usb_host_interface *alts;
-
-	alts = ua->intf[intf_index]->cur_altsetting;
-	if (alts->desc.bAlternateSetting != 0) {
-		int err = usb_set_interface(ua->dev,
-					    alts->desc.bInterfaceNumber, 0);
-		if (err < 0 && !test_bit(DISCONNECTED, &ua->states))
-			dev_warn(&ua->dev->dev,
-				 "interface reset failed; error %d: %s\n",
-				 err, usb_error_string(err));
-	}
-}
-
-static void stop_usb_capture(struct ua101 *ua)
-{
-	clear_bit(USB_CAPTURE_RUNNING, &ua->states);
-
-	kill_stream_urbs(&ua->capture);
-
-	disable_iso_interface(ua, INTF_CAPTURE);
-}
-
-static int start_usb_capture(struct ua101 *ua)
-{
-	int err;
-
-	if (test_bit(DISCONNECTED, &ua->states))
-		return -ENODEV;
-
-	if (test_bit(USB_CAPTURE_RUNNING, &ua->states))
-		return 0;
-
-	kill_stream_urbs(&ua->capture);
-
-	err = enable_iso_interface(ua, INTF_CAPTURE);
-	if (err < 0)
-		return err;
-
-	clear_bit(CAPTURE_URB_COMPLETED, &ua->states);
-	ua->capture.urbs[0]->urb.complete = first_capture_urb_complete;
-	ua->rate_feedback_start = 0;
-	ua->rate_feedback_count = 0;
-
-	set_bit(USB_CAPTURE_RUNNING, &ua->states);
-	err = submit_stream_urbs(ua, &ua->capture);
-	if (err < 0)
-		stop_usb_capture(ua);
-	return err;
-}
-
-static void stop_usb_playback(struct ua101 *ua)
-{
-	clear_bit(USB_PLAYBACK_RUNNING, &ua->states);
-
-	kill_stream_urbs(&ua->playback);
-
-	tasklet_kill(&ua->playback_tasklet);
-
-	disable_iso_interface(ua, INTF_PLAYBACK);
-}
-
-static int start_usb_playback(struct ua101 *ua)
-{
-	unsigned int i, frames;
-	struct urb *urb;
-	int err = 0;
-
-	if (test_bit(DISCONNECTED, &ua->states))
-		return -ENODEV;
-
-	if (test_bit(USB_PLAYBACK_RUNNING, &ua->states))
-		return 0;
-
-	kill_stream_urbs(&ua->playback);
-	tasklet_kill(&ua->playback_tasklet);
-
-	err = enable_iso_interface(ua, INTF_PLAYBACK);
-	if (err < 0)
-		return err;
-
-	clear_bit(PLAYBACK_URB_COMPLETED, &ua->states);
-	ua->playback.urbs[0]->urb.complete =
-		first_playback_urb_complete;
-	spin_lock_irq(&ua->lock);
-	INIT_LIST_HEAD(&ua->ready_playback_urbs);
-	spin_unlock_irq(&ua->lock);
-
-	/*
-	 * We submit the initial URBs all at once, so we have to wait for the
-	 * packet size FIFO to be full.
-	 */
-	wait_event(ua->rate_feedback_wait,
-		   ua->rate_feedback_count >= ua->playback.queue_length ||
-		   !test_bit(USB_CAPTURE_RUNNING, &ua->states) ||
-		   test_bit(DISCONNECTED, &ua->states));
-	if (test_bit(DISCONNECTED, &ua->states)) {
-		stop_usb_playback(ua);
-		return -ENODEV;
-	}
-	if (!test_bit(USB_CAPTURE_RUNNING, &ua->states)) {
-		stop_usb_playback(ua);
-		return -EIO;
-	}
-
-	for (i = 0; i < ua->playback.queue_length; ++i) {
-		/* all initial URBs contain silence */
-		spin_lock_irq(&ua->lock);
-		frames = ua->rate_feedback[ua->rate_feedback_start];
-		add_with_wraparound(ua, &ua->rate_feedback_start, 1);
-		ua->rate_feedback_count--;
-		spin_unlock_irq(&ua->lock);
-		urb = &ua->playback.urbs[i]->urb;
-		urb->iso_frame_desc[0].length =
-			frames * ua->playback.frame_bytes;
-		memset(urb->transfer_buffer, 0,
-		       urb->iso_frame_desc[0].length);
-	}
-
-	set_bit(USB_PLAYBACK_RUNNING, &ua->states);
-	err = submit_stream_urbs(ua, &ua->playback);
-	if (err < 0)
-		stop_usb_playback(ua);
-	return err;
-}
-
-static void abort_alsa_capture(struct ua101 *ua)
-{
-	if (test_bit(ALSA_CAPTURE_RUNNING, &ua->states))
-		snd_pcm_stop(ua->capture.substream, SNDRV_PCM_STATE_XRUN);
-}
-
-static void abort_alsa_playback(struct ua101 *ua)
-{
-	if (test_bit(ALSA_PLAYBACK_RUNNING, &ua->states))
-		snd_pcm_stop(ua->playback.substream, SNDRV_PCM_STATE_XRUN);
-}
-
-static int set_stream_hw(struct ua101 *ua, struct snd_pcm_substream *substream,
-			 unsigned int channels)
-{
-	int err;
-
-	substream->runtime->hw.info =
-		SNDRV_PCM_INFO_MMAP |
-		SNDRV_PCM_INFO_MMAP_VALID |
-		SNDRV_PCM_INFO_BATCH |
-		SNDRV_PCM_INFO_INTERLEAVED |
-		SNDRV_PCM_INFO_BLOCK_TRANSFER |
-		SNDRV_PCM_INFO_FIFO_IN_FRAMES;
-	substream->runtime->hw.formats = ua->format_bit;
-	substream->runtime->hw.rates = snd_pcm_rate_to_rate_bit(ua->rate);
-	substream->runtime->hw.rate_min = ua->rate;
-	substream->runtime->hw.rate_max = ua->rate;
-	substream->runtime->hw.channels_min = channels;
-	substream->runtime->hw.channels_max = channels;
-	substream->runtime->hw.buffer_bytes_max = 45000 * 1024;
-	substream->runtime->hw.period_bytes_min = 1;
-	substream->runtime->hw.period_bytes_max = UINT_MAX;
-	substream->runtime->hw.periods_min = 2;
-	substream->runtime->hw.periods_max = UINT_MAX;
-	err = snd_pcm_hw_constraint_minmax(substream->runtime,
-					   SNDRV_PCM_HW_PARAM_PERIOD_TIME,
-					   1500000 / ua->packets_per_second,
-					   8192000);
-	if (err < 0)
-		return err;
-	err = snd_pcm_hw_constraint_msbits(substream->runtime, 0, 32, 24);
-	return err;
-}
-
-static int capture_pcm_open(struct snd_pcm_substream *substream)
-{
-	struct ua101 *ua = substream->private_data;
-	int err;
-
-	ua->capture.substream = substream;
-	err = set_stream_hw(ua, substream, ua->capture.channels);
-	if (err < 0)
-		return err;
-	substream->runtime->hw.fifo_size =
-		DIV_ROUND_CLOSEST(ua->rate, ua->packets_per_second);
-	substream->runtime->delay = substream->runtime->hw.fifo_size;
-
-	mutex_lock(&ua->mutex);
-	err = start_usb_capture(ua);
-	if (err >= 0)
-		set_bit(ALSA_CAPTURE_OPEN, &ua->states);
-	mutex_unlock(&ua->mutex);
-	return err;
-}
-
-static int playback_pcm_open(struct snd_pcm_substream *substream)
-{
-	struct ua101 *ua = substream->private_data;
-	int err;
-
-	ua->playback.substream = substream;
-	err = set_stream_hw(ua, substream, ua->playback.channels);
-	if (err < 0)
-		return err;
-	substream->runtime->hw.fifo_size =
-		DIV_ROUND_CLOSEST(ua->rate * ua->playback.queue_length,
-				  ua->packets_per_second);
-
-	mutex_lock(&ua->mutex);
-	err = start_usb_capture(ua);
-	if (err < 0)
-		goto error;
-	err = start_usb_playback(ua);
-	if (err < 0) {
-		if (!test_bit(ALSA_CAPTURE_OPEN, &ua->states))
-			stop_usb_capture(ua);
-		goto error;
-	}
-	set_bit(ALSA_PLAYBACK_OPEN, &ua->states);
-error:
-	mutex_unlock(&ua->mutex);
-	return err;
-}
-
-static int capture_pcm_close(struct snd_pcm_substream *substream)
-{
-	struct ua101 *ua = substream->private_data;
-
-	mutex_lock(&ua->mutex);
-	clear_bit(ALSA_CAPTURE_OPEN, &ua->states);
-	if (!test_bit(ALSA_PLAYBACK_OPEN, &ua->states))
-		stop_usb_capture(ua);
-	mutex_unlock(&ua->mutex);
-	return 0;
-}
-
-static int playback_pcm_close(struct snd_pcm_substream *substream)
-{
-	struct ua101 *ua = substream->private_data;
-
-	mutex_lock(&ua->mutex);
-	stop_usb_playback(ua);
-	clear_bit(ALSA_PLAYBACK_OPEN, &ua->states);
-	if (!test_bit(ALSA_CAPTURE_OPEN, &ua->states))
-		stop_usb_capture(ua);
-	mutex_unlock(&ua->mutex);
-	return 0;
-}
-
-static int capture_pcm_hw_params(struct snd_pcm_substream *substream,
-				 struct snd_pcm_hw_params *hw_params)
-{
-	struct ua101 *ua = substream->private_data;
-	int err;
-
-	mutex_lock(&ua->mutex);
-	err = start_usb_capture(ua);
-	mutex_unlock(&ua->mutex);
-	if (err < 0)
-		return err;
-
-	return snd_pcm_lib_alloc_vmalloc_buffer(substream,
-						params_buffer_bytes(hw_params));
-}
-
-static int playback_pcm_hw_params(struct snd_pcm_substream *substream,
-				  struct snd_pcm_hw_params *hw_params)
-{
-	struct ua101 *ua = substream->private_data;
-	int err;
-
-	mutex_lock(&ua->mutex);
-	err = start_usb_capture(ua);
-	if (err >= 0)
-		err = start_usb_playback(ua);
-	mutex_unlock(&ua->mutex);
-	if (err < 0)
-		return err;
-
-	return snd_pcm_lib_alloc_vmalloc_buffer(substream,
-						params_buffer_bytes(hw_params));
-}
-
-static int ua101_pcm_hw_free(struct snd_pcm_substream *substream)
-{
-	return snd_pcm_lib_free_vmalloc_buffer(substream);
-}
-
-static int capture_pcm_prepare(struct snd_pcm_substream *substream)
-{
-	struct ua101 *ua = substream->private_data;
-	int err;
-
-	mutex_lock(&ua->mutex);
-	err = start_usb_capture(ua);
-	mutex_unlock(&ua->mutex);
-	if (err < 0)
-		return err;
-
-	/*
-	 * The EHCI driver schedules the first packet of an iso stream at 10 ms
-	 * in the future, i.e., no data is actually captured for that long.
-	 * Take the wait here so that the stream is known to be actually
-	 * running when the start trigger has been called.
-	 */
-	wait_event(ua->alsa_capture_wait,
-		   test_bit(CAPTURE_URB_COMPLETED, &ua->states) ||
-		   !test_bit(USB_CAPTURE_RUNNING, &ua->states));
-	if (test_bit(DISCONNECTED, &ua->states))
-		return -ENODEV;
-	if (!test_bit(USB_CAPTURE_RUNNING, &ua->states))
-		return -EIO;
-
-	ua->capture.period_pos = 0;
-	ua->capture.buffer_pos = 0;
-	return 0;
-}
-
-static int playback_pcm_prepare(struct snd_pcm_substream *substream)
-{
-	struct ua101 *ua = substream->private_data;
-	int err;
-
-	mutex_lock(&ua->mutex);
-	err = start_usb_capture(ua);
-	if (err >= 0)
-		err = start_usb_playback(ua);
-	mutex_unlock(&ua->mutex);
-	if (err < 0)
-		return err;
-
-	/* see the comment in capture_pcm_prepare() */
-	wait_event(ua->alsa_playback_wait,
-		   test_bit(PLAYBACK_URB_COMPLETED, &ua->states) ||
-		   !test_bit(USB_PLAYBACK_RUNNING, &ua->states));
-	if (test_bit(DISCONNECTED, &ua->states))
-		return -ENODEV;
-	if (!test_bit(USB_PLAYBACK_RUNNING, &ua->states))
-		return -EIO;
-
-	substream->runtime->delay = 0;
-	ua->playback.period_pos = 0;
-	ua->playback.buffer_pos = 0;
-	return 0;
-}
-
-static int capture_pcm_trigger(struct snd_pcm_substream *substream, int cmd)
-{
-	struct ua101 *ua = substream->private_data;
-
-	switch (cmd) {
-	case SNDRV_PCM_TRIGGER_START:
-		if (!test_bit(USB_CAPTURE_RUNNING, &ua->states))
-			return -EIO;
-		set_bit(ALSA_CAPTURE_RUNNING, &ua->states);
-		return 0;
-	case SNDRV_PCM_TRIGGER_STOP:
-		clear_bit(ALSA_CAPTURE_RUNNING, &ua->states);
-		return 0;
-	default:
-		return -EINVAL;
-	}
-}
-
-static int playback_pcm_trigger(struct snd_pcm_substream *substream, int cmd)
-{
-	struct ua101 *ua = substream->private_data;
-
-	switch (cmd) {
-	case SNDRV_PCM_TRIGGER_START:
-		if (!test_bit(USB_PLAYBACK_RUNNING, &ua->states))
-			return -EIO;
-		set_bit(ALSA_PLAYBACK_RUNNING, &ua->states);
-		return 0;
-	case SNDRV_PCM_TRIGGER_STOP:
-		clear_bit(ALSA_PLAYBACK_RUNNING, &ua->states);
-		return 0;
-	default:
-		return -EINVAL;
-	}
-}
-
-static inline snd_pcm_uframes_t ua101_pcm_pointer(struct ua101 *ua,
-						  struct ua101_stream *stream)
-{
-	unsigned long flags;
-	unsigned int pos;
-
-	spin_lock_irqsave(&ua->lock, flags);
-	pos = stream->buffer_pos;
-	spin_unlock_irqrestore(&ua->lock, flags);
-	return pos;
-}
-
-static snd_pcm_uframes_t capture_pcm_pointer(struct snd_pcm_substream *subs)
-{
-	struct ua101 *ua = subs->private_data;
-
-	return ua101_pcm_pointer(ua, &ua->capture);
-}
-
-static snd_pcm_uframes_t playback_pcm_pointer(struct snd_pcm_substream *subs)
-{
-	struct ua101 *ua = subs->private_data;
-
-	return ua101_pcm_pointer(ua, &ua->playback);
-}
-
-static struct snd_pcm_ops capture_pcm_ops = {
-	.open = capture_pcm_open,
-	.close = capture_pcm_close,
-	.ioctl = snd_pcm_lib_ioctl,
-	.hw_params = capture_pcm_hw_params,
-	.hw_free = ua101_pcm_hw_free,
-	.prepare = capture_pcm_prepare,
-	.trigger = capture_pcm_trigger,
-	.pointer = capture_pcm_pointer,
-	.page = snd_pcm_lib_get_vmalloc_page,
-	.mmap = snd_pcm_lib_mmap_vmalloc,
-};
-
-static struct snd_pcm_ops playback_pcm_ops = {
-	.open = playback_pcm_open,
-	.close = playback_pcm_close,
-	.ioctl = snd_pcm_lib_ioctl,
-	.hw_params = playback_pcm_hw_params,
-	.hw_free = ua101_pcm_hw_free,
-	.prepare = playback_pcm_prepare,
-	.trigger = playback_pcm_trigger,
-	.pointer = playback_pcm_pointer,
-	.page = snd_pcm_lib_get_vmalloc_page,
-	.mmap = snd_pcm_lib_mmap_vmalloc,
-};
-
-static const struct uac_format_type_i_discrete_descriptor *
-find_format_descriptor(struct usb_interface *interface)
-{
-	struct usb_host_interface *alt;
-	u8 *extra;
-	int extralen;
-
-	if (interface->num_altsetting != 2) {
-		dev_err(&interface->dev, "invalid num_altsetting\n");
-		return NULL;
-	}
-
-	alt = &interface->altsetting[0];
-	if (alt->desc.bNumEndpoints != 0) {
-		dev_err(&interface->dev, "invalid bNumEndpoints\n");
-		return NULL;
-	}
-
-	alt = &interface->altsetting[1];
-	if (alt->desc.bNumEndpoints != 1) {
-		dev_err(&interface->dev, "invalid bNumEndpoints\n");
-		return NULL;
-	}
-
-	extra = alt->extra;
-	extralen = alt->extralen;
-	while (extralen >= sizeof(struct usb_descriptor_header)) {
-		struct uac_format_type_i_discrete_descriptor *desc;
-
-		desc = (struct uac_format_type_i_discrete_descriptor *)extra;
-		if (desc->bLength > extralen) {
-			dev_err(&interface->dev, "descriptor overflow\n");
-			return NULL;
-		}
-		if (desc->bLength == UAC_FORMAT_TYPE_I_DISCRETE_DESC_SIZE(1) &&
-		    desc->bDescriptorType == USB_DT_CS_INTERFACE &&
-		    desc->bDescriptorSubtype == UAC_FORMAT_TYPE) {
-			if (desc->bFormatType != UAC_FORMAT_TYPE_I_PCM ||
-			    desc->bSamFreqType != 1) {
-				dev_err(&interface->dev,
-					"invalid format type\n");
-				return NULL;
-			}
-			return desc;
-		}
-		extralen -= desc->bLength;
-		extra += desc->bLength;
-	}
-	dev_err(&interface->dev, "sample format descriptor not found\n");
-	return NULL;
-}
-
-static int detect_usb_format(struct ua101 *ua)
-{
-	const struct uac_format_type_i_discrete_descriptor *fmt_capture;
-	const struct uac_format_type_i_discrete_descriptor *fmt_playback;
-	const struct usb_endpoint_descriptor *epd;
-	unsigned int rate2;
-
-	fmt_capture = find_format_descriptor(ua->intf[INTF_CAPTURE]);
-	fmt_playback = find_format_descriptor(ua->intf[INTF_PLAYBACK]);
-	if (!fmt_capture || !fmt_playback)
-		return -ENXIO;
-
-	switch (fmt_capture->bSubframeSize) {
-	case 3:
-		ua->format_bit = SNDRV_PCM_FMTBIT_S24_3LE;
-		break;
-	case 4:
-		ua->format_bit = SNDRV_PCM_FMTBIT_S32_LE;
-		break;
-	default:
-		dev_err(&ua->dev->dev, "sample width is not 24 or 32 bits\n");
-		return -ENXIO;
-	}
-	if (fmt_capture->bSubframeSize != fmt_playback->bSubframeSize) {
-		dev_err(&ua->dev->dev,
-			"playback/capture sample widths do not match\n");
-		return -ENXIO;
-	}
-
-	if (fmt_capture->bBitResolution != 24 ||
-	    fmt_playback->bBitResolution != 24) {
-		dev_err(&ua->dev->dev, "sample width is not 24 bits\n");
-		return -ENXIO;
-	}
-
-	ua->rate = combine_triple(fmt_capture->tSamFreq[0]);
-	rate2 = combine_triple(fmt_playback->tSamFreq[0]);
-	if (ua->rate != rate2) {
-		dev_err(&ua->dev->dev,
-			"playback/capture rates do not match: %u/%u\n",
-			rate2, ua->rate);
-		return -ENXIO;
-	}
-
-	switch (ua->dev->speed) {
-	case USB_SPEED_FULL:
-		ua->packets_per_second = 1000;
-		break;
-	case USB_SPEED_HIGH:
-		ua->packets_per_second = 8000;
-		break;
-	default:
-		dev_err(&ua->dev->dev, "unknown device speed\n");
-		return -ENXIO;
-	}
-
-	ua->capture.channels = fmt_capture->bNrChannels;
-	ua->playback.channels = fmt_playback->bNrChannels;
-	ua->capture.frame_bytes =
-		fmt_capture->bSubframeSize * ua->capture.channels;
-	ua->playback.frame_bytes =
-		fmt_playback->bSubframeSize * ua->playback.channels;
-
-	epd = &ua->intf[INTF_CAPTURE]->altsetting[1].endpoint[0].desc;
-	if (!usb_endpoint_is_isoc_in(epd)) {
-		dev_err(&ua->dev->dev, "invalid capture endpoint\n");
-		return -ENXIO;
-	}
-	ua->capture.usb_pipe = usb_rcvisocpipe(ua->dev, usb_endpoint_num(epd));
-	ua->capture.max_packet_bytes = le16_to_cpu(epd->wMaxPacketSize);
-
-	epd = &ua->intf[INTF_PLAYBACK]->altsetting[1].endpoint[0].desc;
-	if (!usb_endpoint_is_isoc_out(epd)) {
-		dev_err(&ua->dev->dev, "invalid playback endpoint\n");
-		return -ENXIO;
-	}
-	ua->playback.usb_pipe = usb_sndisocpipe(ua->dev, usb_endpoint_num(epd));
-	ua->playback.max_packet_bytes = le16_to_cpu(epd->wMaxPacketSize);
-	return 0;
-}
-
-static int alloc_stream_buffers(struct ua101 *ua, struct ua101_stream *stream)
-{
-	unsigned int remaining_packets, packets, packets_per_page, i;
-	size_t size;
-
-	stream->queue_length = queue_length;
-	stream->queue_length = max(stream->queue_length,
-				   (unsigned int)MIN_QUEUE_LENGTH);
-	stream->queue_length = min(stream->queue_length,
-				   (unsigned int)MAX_QUEUE_LENGTH);
-
-	/*
-	 * The cache pool sizes used by usb_buffer_alloc() (128, 512, 2048) are
-	 * quite bad when used with the packet sizes of this device (e.g. 280,
-	 * 520, 624).  Therefore, we allocate and subdivide entire pages, using
-	 * a smaller buffer only for the last chunk.
-	 */
-	remaining_packets = stream->queue_length;
-	packets_per_page = PAGE_SIZE / stream->max_packet_bytes;
-	for (i = 0; i < ARRAY_SIZE(stream->buffers); ++i) {
-		packets = min(remaining_packets, packets_per_page);
-		size = packets * stream->max_packet_bytes;
-		stream->buffers[i].addr =
-			usb_buffer_alloc(ua->dev, size, GFP_KERNEL,
-					 &stream->buffers[i].dma);
-		if (!stream->buffers[i].addr)
-			return -ENOMEM;
-		stream->buffers[i].size = size;
-		remaining_packets -= packets;
-		if (!remaining_packets)
-			break;
-	}
-	if (remaining_packets) {
-		dev_err(&ua->dev->dev, "too many packets\n");
-		return -ENXIO;
-	}
-	return 0;
-}
-
-static void free_stream_buffers(struct ua101 *ua, struct ua101_stream *stream)
-{
-	unsigned int i;
-
-	for (i = 0; i < ARRAY_SIZE(stream->buffers); ++i)
-		usb_buffer_free(ua->dev,
-				stream->buffers[i].size,
-				stream->buffers[i].addr,
-				stream->buffers[i].dma);
-}
-
-static int alloc_stream_urbs(struct ua101 *ua, struct ua101_stream *stream,
-			     void (*urb_complete)(struct urb *))
-{
-	unsigned max_packet_size = stream->max_packet_bytes;
-	struct ua101_urb *urb;
-	unsigned int b, u = 0;
-
-	for (b = 0; b < ARRAY_SIZE(stream->buffers); ++b) {
-		unsigned int size = stream->buffers[b].size;
-		u8 *addr = stream->buffers[b].addr;
-		dma_addr_t dma = stream->buffers[b].dma;
-
-		while (size >= max_packet_size) {
-			if (u >= stream->queue_length)
-				goto bufsize_error;
-			urb = kmalloc(sizeof(*urb), GFP_KERNEL);
-			if (!urb)
-				return -ENOMEM;
-			usb_init_urb(&urb->urb);
-			urb->urb.dev = ua->dev;
-			urb->urb.pipe = stream->usb_pipe;
-			urb->urb.transfer_flags = URB_ISO_ASAP |
-					URB_NO_TRANSFER_DMA_MAP;
-			urb->urb.transfer_buffer = addr;
-			urb->urb.transfer_dma = dma;
-			urb->urb.transfer_buffer_length = max_packet_size;
-			urb->urb.number_of_packets = 1;
-			urb->urb.interval = 1;
-			urb->urb.context = ua;
-			urb->urb.complete = urb_complete;
-			urb->urb.iso_frame_desc[0].offset = 0;
-			urb->urb.iso_frame_desc[0].length = max_packet_size;
-			stream->urbs[u++] = urb;
-			size -= max_packet_size;
-			addr += max_packet_size;
-			dma += max_packet_size;
-		}
-	}
-	if (u == stream->queue_length)
-		return 0;
-bufsize_error:
-	dev_err(&ua->dev->dev, "internal buffer size error\n");
-	return -ENXIO;
-}
-
-static void free_stream_urbs(struct ua101_stream *stream)
-{
-	unsigned int i;
-
-	for (i = 0; i < stream->queue_length; ++i)
-		kfree(stream->urbs[i]);
-}
-
-static void free_usb_related_resources(struct ua101 *ua,
-				       struct usb_interface *interface)
-{
-	unsigned int i;
-
-	free_stream_urbs(&ua->capture);
-	free_stream_urbs(&ua->playback);
-	free_stream_buffers(ua, &ua->capture);
-	free_stream_buffers(ua, &ua->playback);
-
-	for (i = 0; i < ARRAY_SIZE(ua->intf); ++i)
-		if (ua->intf[i]) {
-			usb_set_intfdata(ua->intf[i], NULL);
-			if (ua->intf[i] != interface)
-				usb_driver_release_interface(&ua101_driver,
-							     ua->intf[i]);
-		}
-}
-
-static void ua101_card_free(struct snd_card *card)
-{
-	struct ua101 *ua = card->private_data;
-
-	mutex_destroy(&ua->mutex);
-}
-
-static int ua101_probe(struct usb_interface *interface,
-		       const struct usb_device_id *usb_id)
-{
-	static const struct snd_usb_midi_endpoint_info midi_ep = {
-		.out_cables = 0x0001,
-		.in_cables = 0x0001
-	};
-	static const struct snd_usb_audio_quirk midi_quirk = {
-		.type = QUIRK_MIDI_FIXED_ENDPOINT,
-		.data = &midi_ep
-	};
-	static const int intf_numbers[2][3] = {
-		{	/* UA-101 */
-			[INTF_PLAYBACK] = 0,
-			[INTF_CAPTURE] = 1,
-			[INTF_MIDI] = 2,
-		},
-		{	/* UA-1000 */
-			[INTF_CAPTURE] = 1,
-			[INTF_PLAYBACK] = 2,
-			[INTF_MIDI] = 3,
-		},
-	};
-	struct snd_card *card;
-	struct ua101 *ua;
-	unsigned int card_index, i;
-	int is_ua1000;
-	const char *name;
-	char usb_path[32];
-	int err;
-
-	is_ua1000 = usb_id->idProduct == 0x0044;
-
-	if (interface->altsetting->desc.bInterfaceNumber !=
-	    intf_numbers[is_ua1000][0])
-		return -ENODEV;
-
-	mutex_lock(&devices_mutex);
-
-	for (card_index = 0; card_index < SNDRV_CARDS; ++card_index)
-		if (enable[card_index] && !(devices_used & (1 << card_index)))
-			break;
-	if (card_index >= SNDRV_CARDS) {
-		mutex_unlock(&devices_mutex);
-		return -ENOENT;
-	}
-	err = snd_card_create(index[card_index], id[card_index], THIS_MODULE,
-			      sizeof(*ua), &card);
-	if (err < 0) {
-		mutex_unlock(&devices_mutex);
-		return err;
-	}
-	card->private_free = ua101_card_free;
-	ua = card->private_data;
-	ua->dev = interface_to_usbdev(interface);
-	ua->card = card;
-	ua->card_index = card_index;
-	INIT_LIST_HEAD(&ua->midi_list);
-	spin_lock_init(&ua->lock);
-	mutex_init(&ua->mutex);
-	INIT_LIST_HEAD(&ua->ready_playback_urbs);
-	tasklet_init(&ua->playback_tasklet,
-		     playback_tasklet, (unsigned long)ua);
-	init_waitqueue_head(&ua->alsa_capture_wait);
-	init_waitqueue_head(&ua->rate_feedback_wait);
-	init_waitqueue_head(&ua->alsa_playback_wait);
-
-	ua->intf[0] = interface;
-	for (i = 1; i < ARRAY_SIZE(ua->intf); ++i) {
-		ua->intf[i] = usb_ifnum_to_if(ua->dev,
-					      intf_numbers[is_ua1000][i]);
-		if (!ua->intf[i]) {
-			dev_err(&ua->dev->dev, "interface %u not found\n",
-				intf_numbers[is_ua1000][i]);
-			err = -ENXIO;
-			goto probe_error;
-		}
-		err = usb_driver_claim_interface(&ua101_driver,
-						 ua->intf[i], ua);
-		if (err < 0) {
-			ua->intf[i] = NULL;
-			err = -EBUSY;
-			goto probe_error;
-		}
-	}
-
-	snd_card_set_dev(card, &interface->dev);
-
-	err = detect_usb_format(ua);
-	if (err < 0)
-		goto probe_error;
-
-	name = usb_id->idProduct == 0x0044 ? "UA-1000" : "UA-101";
-	strcpy(card->driver, "UA-101");
-	strcpy(card->shortname, name);
-	usb_make_path(ua->dev, usb_path, sizeof(usb_path));
-	snprintf(ua->card->longname, sizeof(ua->card->longname),
-		 "EDIROL %s (serial %s), %u Hz at %s, %s speed", name,
-		 ua->dev->serial ? ua->dev->serial : "?", ua->rate, usb_path,
-		 ua->dev->speed == USB_SPEED_HIGH ? "high" : "full");
-
-	err = alloc_stream_buffers(ua, &ua->capture);
-	if (err < 0)
-		goto probe_error;
-	err = alloc_stream_buffers(ua, &ua->playback);
-	if (err < 0)
-		goto probe_error;
-
-	err = alloc_stream_urbs(ua, &ua->capture, capture_urb_complete);
-	if (err < 0)
-		goto probe_error;
-	err = alloc_stream_urbs(ua, &ua->playback, playback_urb_complete);
-	if (err < 0)
-		goto probe_error;
-
-	err = snd_pcm_new(card, name, 0, 1, 1, &ua->pcm);
-	if (err < 0)
-		goto probe_error;
-	ua->pcm->private_data = ua;
-	strcpy(ua->pcm->name, name);
-	snd_pcm_set_ops(ua->pcm, SNDRV_PCM_STREAM_PLAYBACK, &playback_pcm_ops);
-	snd_pcm_set_ops(ua->pcm, SNDRV_PCM_STREAM_CAPTURE, &capture_pcm_ops);
-
-	err = snd_usbmidi_create(card, ua->intf[INTF_MIDI],
-				 &ua->midi_list, &midi_quirk);
-	if (err < 0)
-		goto probe_error;
-
-	err = snd_card_register(card);
-	if (err < 0)
-		goto probe_error;
-
-	usb_set_intfdata(interface, ua);
-	devices_used |= 1 << card_index;
-
-	mutex_unlock(&devices_mutex);
-	return 0;
-
-probe_error:
-	free_usb_related_resources(ua, interface);
-	snd_card_free(card);
-	mutex_unlock(&devices_mutex);
-	return err;
-}
-
-static void ua101_disconnect(struct usb_interface *interface)
-{
-	struct ua101 *ua = usb_get_intfdata(interface);
-	struct list_head *midi;
-
-	if (!ua)
-		return;
-
-	mutex_lock(&devices_mutex);
-
-	set_bit(DISCONNECTED, &ua->states);
-	wake_up(&ua->rate_feedback_wait);
-
-	/* make sure that userspace cannot create new requests */
-	snd_card_disconnect(ua->card);
-
-	/* make sure that there are no pending USB requests */
-	__list_for_each(midi, &ua->midi_list)
-		snd_usbmidi_disconnect(midi);
-	abort_alsa_playback(ua);
-	abort_alsa_capture(ua);
-	mutex_lock(&ua->mutex);
-	stop_usb_playback(ua);
-	stop_usb_capture(ua);
-	mutex_unlock(&ua->mutex);
-
-	free_usb_related_resources(ua, interface);
-
-	devices_used &= ~(1 << ua->card_index);
-
-	snd_card_free_when_closed(ua->card);
-
-	mutex_unlock(&devices_mutex);
-}
-
-static struct usb_device_id ua101_ids[] = {
-	{ USB_DEVICE(0x0582, 0x0044) }, /* UA-1000 high speed */
-	{ USB_DEVICE(0x0582, 0x007d) }, /* UA-101 high speed */
-	{ USB_DEVICE(0x0582, 0x008d) }, /* UA-101 full speed */
-	{ }
-};
-MODULE_DEVICE_TABLE(usb, ua101_ids);
-
-static struct usb_driver ua101_driver = {
-	.name = "snd-ua101",
-	.id_table = ua101_ids,
-	.probe = ua101_probe,
-	.disconnect = ua101_disconnect,
-#if 0
-	.suspend = ua101_suspend,
-	.resume = ua101_resume,
-#endif
-};
-
-static int __init alsa_card_ua101_init(void)
-{
-	return usb_register(&ua101_driver);
-}
-
-static void __exit alsa_card_ua101_exit(void)
-{
-	usb_deregister(&ua101_driver);
-	mutex_destroy(&devices_mutex);
-}
-
-module_init(alsa_card_ua101_init);
-module_exit(alsa_card_ua101_exit);