ALSA: snd-usb-caiaq: rename 'dev' to 'cdev'

This is needed in order to make the device namespace cleaner, and will
help when moving this driver over to dev_*() logging.

Signed-off-by: Daniel Mack <zonque@gmail.com>
Signed-off-by: Takashi Iwai <tiwai@suse.de>

10 files changed, 543 insertions, 542 deletions

diff --git a/sound/usb/caiaq/audio.c b/sound/usb/caiaq/audio.c
index fde9a7a..75d8ba9 100644
--- a/sound/usb/caiaq/audio.c
+++ b/sound/usb/caiaq/audio.c
@@ -39,8 +39,8 @@
 #define ENDPOINT_CAPTURE	2
 #define ENDPOINT_PLAYBACK	6
 
-#define MAKE_CHECKBYTE(dev,stream,i) \
-	(stream << 1) | (~(i / (dev->n_streams * BYTES_PER_SAMPLE_USB)) & 1)
+#define MAKE_CHECKBYTE(cdev,stream,i) \
+	(stream << 1) | (~(i / (cdev->n_streams * BYTES_PER_SAMPLE_USB)) & 1)
 
 static struct snd_pcm_hardware snd_usb_caiaq_pcm_hardware = {
 	.info 		= (SNDRV_PCM_INFO_MMAP | SNDRV_PCM_INFO_INTERLEAVED |
@@ -60,32 +60,32 @@ static struct snd_pcm_hardware snd_usb_caiaq_pcm_hardware = {
 };
 
 static void
-activate_substream(struct snd_usb_caiaqdev *dev,
+activate_substream(struct snd_usb_caiaqdev *cdev,
 	           struct snd_pcm_substream *sub)
 {
-	spin_lock(&dev->spinlock);
+	spin_lock(&cdev->spinlock);
 
 	if (sub->stream == SNDRV_PCM_STREAM_PLAYBACK)
-		dev->sub_playback[sub->number] = sub;
+		cdev->sub_playback[sub->number] = sub;
 	else
-		dev->sub_capture[sub->number] = sub;
+		cdev->sub_capture[sub->number] = sub;
 
-	spin_unlock(&dev->spinlock);
+	spin_unlock(&cdev->spinlock);
 }
 
 static void
-deactivate_substream(struct snd_usb_caiaqdev *dev,
+deactivate_substream(struct snd_usb_caiaqdev *cdev,
 		     struct snd_pcm_substream *sub)
 {
 	unsigned long flags;
-	spin_lock_irqsave(&dev->spinlock, flags);
+	spin_lock_irqsave(&cdev->spinlock, flags);
 
 	if (sub->stream == SNDRV_PCM_STREAM_PLAYBACK)
-		dev->sub_playback[sub->number] = NULL;
+		cdev->sub_playback[sub->number] = NULL;
 	else
-		dev->sub_capture[sub->number] = NULL;
+		cdev->sub_capture[sub->number] = NULL;
 
-	spin_unlock_irqrestore(&dev->spinlock, flags);
+	spin_unlock_irqrestore(&cdev->spinlock, flags);
 }
 
 static int
@@ -98,28 +98,28 @@ all_substreams_zero(struct snd_pcm_substream **subs)
 	return 1;
 }
 
-static int stream_start(struct snd_usb_caiaqdev *dev)
+static int stream_start(struct snd_usb_caiaqdev *cdev)
 {
 	int i, ret;
 
-	debug("%s(%p)\n", __func__, dev);
+	debug("%s(%p)\n", __func__, cdev);
 
-	if (dev->streaming)
+	if (cdev->streaming)
 		return -EINVAL;
 
-	memset(dev->sub_playback, 0, sizeof(dev->sub_playback));
-	memset(dev->sub_capture, 0, sizeof(dev->sub_capture));
-	dev->input_panic = 0;
-	dev->output_panic = 0;
-	dev->first_packet = 4;
-	dev->streaming = 1;
-	dev->warned = 0;
+	memset(cdev->sub_playback, 0, sizeof(cdev->sub_playback));
+	memset(cdev->sub_capture, 0, sizeof(cdev->sub_capture));
+	cdev->input_panic = 0;
+	cdev->output_panic = 0;
+	cdev->first_packet = 4;
+	cdev->streaming = 1;
+	cdev->warned = 0;
 
 	for (i = 0; i < N_URBS; i++) {
-		ret = usb_submit_urb(dev->data_urbs_in[i], GFP_ATOMIC);
+		ret = usb_submit_urb(cdev->data_urbs_in[i], GFP_ATOMIC);
 		if (ret) {
 			log("unable to trigger read #%d! (ret %d)\n", i, ret);
-			dev->streaming = 0;
+			cdev->streaming = 0;
 			return -EPIPE;
 		}
 	}
@@ -127,46 +127,46 @@ static int stream_start(struct snd_usb_caiaqdev *dev)
 	return 0;
 }
 
-static void stream_stop(struct snd_usb_caiaqdev *dev)
+static void stream_stop(struct snd_usb_caiaqdev *cdev)
 {
 	int i;
 
-	debug("%s(%p)\n", __func__, dev);
-	if (!dev->streaming)
+	debug("%s(%p)\n", __func__, cdev);
+	if (!cdev->streaming)
 		return;
 
-	dev->streaming = 0;
+	cdev->streaming = 0;
 
 	for (i = 0; i < N_URBS; i++) {
-		usb_kill_urb(dev->data_urbs_in[i]);
+		usb_kill_urb(cdev->data_urbs_in[i]);
 
-		if (test_bit(i, &dev->outurb_active_mask))
-			usb_kill_urb(dev->data_urbs_out[i]);
+		if (test_bit(i, &cdev->outurb_active_mask))
+			usb_kill_urb(cdev->data_urbs_out[i]);
 	}
 
-	dev->outurb_active_mask = 0;
+	cdev->outurb_active_mask = 0;
 }
 
 static int snd_usb_caiaq_substream_open(struct snd_pcm_substream *substream)
 {
-	struct snd_usb_caiaqdev *dev = snd_pcm_substream_chip(substream);
+	struct snd_usb_caiaqdev *cdev = snd_pcm_substream_chip(substream);
 	debug("%s(%p)\n", __func__, substream);
-	substream->runtime->hw = dev->pcm_info;
+	substream->runtime->hw = cdev->pcm_info;
 	snd_pcm_limit_hw_rates(substream->runtime);
 	return 0;
 }
 
 static int snd_usb_caiaq_substream_close(struct snd_pcm_substream *substream)
 {
-	struct snd_usb_caiaqdev *dev = snd_pcm_substream_chip(substream);
+	struct snd_usb_caiaqdev *cdev = snd_pcm_substream_chip(substream);
 
 	debug("%s(%p)\n", __func__, substream);
-	if (all_substreams_zero(dev->sub_playback) &&
-	    all_substreams_zero(dev->sub_capture)) {
+	if (all_substreams_zero(cdev->sub_playback) &&
+	    all_substreams_zero(cdev->sub_capture)) {
 		/* when the last client has stopped streaming,
 		 * all sample rates are allowed again */
-		stream_stop(dev);
-		dev->pcm_info.rates = dev->samplerates;
+		stream_stop(cdev);
+		cdev->pcm_info.rates = cdev->samplerates;
 	}
 
 	return 0;
@@ -181,9 +181,9 @@ static int snd_usb_caiaq_pcm_hw_params(struct snd_pcm_substream *sub,
 
 static int snd_usb_caiaq_pcm_hw_free(struct snd_pcm_substream *sub)
 {
-	struct snd_usb_caiaqdev *dev = snd_pcm_substream_chip(sub);
+	struct snd_usb_caiaqdev *cdev = snd_pcm_substream_chip(sub);
 	debug("%s(%p)\n", __func__, sub);
-	deactivate_substream(dev, sub);
+	deactivate_substream(cdev, sub);
 	return snd_pcm_lib_free_pages(sub);
 }
 
@@ -199,7 +199,7 @@ static int snd_usb_caiaq_pcm_prepare(struct snd_pcm_substream *substream)
 {
 	int bytes_per_sample, bpp, ret, i;
 	int index = substream->number;
-	struct snd_usb_caiaqdev *dev = snd_pcm_substream_chip(substream);
+	struct snd_usb_caiaqdev *cdev = snd_pcm_substream_chip(substream);
 	struct snd_pcm_runtime *runtime = substream->runtime;
 
 	debug("%s(%p)\n", __func__, substream);
@@ -207,7 +207,7 @@ static int snd_usb_caiaq_pcm_prepare(struct snd_pcm_substream *substream)
 	if (substream->stream == SNDRV_PCM_STREAM_PLAYBACK) {
 		int out_pos;
 
-		switch (dev->spec.data_alignment) {
+		switch (cdev->spec.data_alignment) {
 		case 0:
 		case 2:
 			out_pos = BYTES_PER_SAMPLE + 1;
@@ -218,12 +218,12 @@ static int snd_usb_caiaq_pcm_prepare(struct snd_pcm_substream *substream)
 			break;
 		}
 
-		dev->period_out_count[index] = out_pos;
-		dev->audio_out_buf_pos[index] = out_pos;
+		cdev->period_out_count[index] = out_pos;
+		cdev->audio_out_buf_pos[index] = out_pos;
 	} else {
 		int in_pos;
 
-		switch (dev->spec.data_alignment) {
+		switch (cdev->spec.data_alignment) {
 		case 0:
 			in_pos = BYTES_PER_SAMPLE + 2;
 			break;
@@ -236,44 +236,44 @@ static int snd_usb_caiaq_pcm_prepare(struct snd_pcm_substream *substream)
 			break;
 		}
 
-		dev->period_in_count[index] = in_pos;
-		dev->audio_in_buf_pos[index] = in_pos;
+		cdev->period_in_count[index] = in_pos;
+		cdev->audio_in_buf_pos[index] = in_pos;
 	}
 
-	if (dev->streaming)
+	if (cdev->streaming)
 		return 0;
 
 	/* the first client that opens a stream defines the sample rate
 	 * setting for all subsequent calls, until the last client closed. */
 	for (i=0; i < ARRAY_SIZE(rates); i++)
 		if (runtime->rate == rates[i])
-			dev->pcm_info.rates = 1 << i;
+			cdev->pcm_info.rates = 1 << i;
 
 	snd_pcm_limit_hw_rates(runtime);
 
 	bytes_per_sample = BYTES_PER_SAMPLE;
-	if (dev->spec.data_alignment >= 2)
+	if (cdev->spec.data_alignment >= 2)
 		bytes_per_sample++;
 
 	bpp = ((runtime->rate / 8000) + CLOCK_DRIFT_TOLERANCE)
-		* bytes_per_sample * CHANNELS_PER_STREAM * dev->n_streams;
+		* bytes_per_sample * CHANNELS_PER_STREAM * cdev->n_streams;
 
 	if (bpp > MAX_ENDPOINT_SIZE)
 		bpp = MAX_ENDPOINT_SIZE;
 
-	ret = snd_usb_caiaq_set_audio_params(dev, runtime->rate,
+	ret = snd_usb_caiaq_set_audio_params(cdev, runtime->rate,
 					     runtime->sample_bits, bpp);
 	if (ret)
 		return ret;
 
-	ret = stream_start(dev);
+	ret = stream_start(cdev);
 	if (ret)
 		return ret;
 
-	dev->output_running = 0;
-	wait_event_timeout(dev->prepare_wait_queue, dev->output_running, HZ);
-	if (!dev->output_running) {
-		stream_stop(dev);
+	cdev->output_running = 0;
+	wait_event_timeout(cdev->prepare_wait_queue, cdev->output_running, HZ);
+	if (!cdev->output_running) {
+		stream_stop(cdev);
 		return -EPIPE;
 	}
 
@@ -282,18 +282,18 @@ static int snd_usb_caiaq_pcm_prepare(struct snd_pcm_substream *substream)
 
 static int snd_usb_caiaq_pcm_trigger(struct snd_pcm_substream *sub, int cmd)
 {
-	struct snd_usb_caiaqdev *dev = snd_pcm_substream_chip(sub);
+	struct snd_usb_caiaqdev *cdev = snd_pcm_substream_chip(sub);
 
 	debug("%s(%p) cmd %d\n", __func__, sub, cmd);
 
 	switch (cmd) {
 	case SNDRV_PCM_TRIGGER_START:
 	case SNDRV_PCM_TRIGGER_PAUSE_RELEASE:
-		activate_substream(dev, sub);
+		activate_substream(cdev, sub);
 		break;
 	case SNDRV_PCM_TRIGGER_STOP:
 	case SNDRV_PCM_TRIGGER_PAUSE_PUSH:
-		deactivate_substream(dev, sub);
+		deactivate_substream(cdev, sub);
 		break;
 	default:
 		return -EINVAL;
@@ -306,25 +306,25 @@ static snd_pcm_uframes_t
 snd_usb_caiaq_pcm_pointer(struct snd_pcm_substream *sub)
 {
 	int index = sub->number;
-	struct snd_usb_caiaqdev *dev = snd_pcm_substream_chip(sub);
+	struct snd_usb_caiaqdev *cdev = snd_pcm_substream_chip(sub);
 	snd_pcm_uframes_t ptr;
 
-	spin_lock(&dev->spinlock);
+	spin_lock(&cdev->spinlock);
 
-	if (dev->input_panic || dev->output_panic) {
+	if (cdev->input_panic || cdev->output_panic) {
 		ptr = SNDRV_PCM_POS_XRUN;
 		goto unlock;
 	}
 
 	if (sub->stream == SNDRV_PCM_STREAM_PLAYBACK)
 		ptr = bytes_to_frames(sub->runtime,
-					dev->audio_out_buf_pos[index]);
+					cdev->audio_out_buf_pos[index]);
 	else
 		ptr = bytes_to_frames(sub->runtime,
-					dev->audio_in_buf_pos[index]);
+					cdev->audio_in_buf_pos[index]);
 
 unlock:
-	spin_unlock(&dev->spinlock);
+	spin_unlock(&cdev->spinlock);
 	return ptr;
 }
 
@@ -340,21 +340,21 @@ static struct snd_pcm_ops snd_usb_caiaq_ops = {
 	.pointer =	snd_usb_caiaq_pcm_pointer
 };
 
-static void check_for_elapsed_periods(struct snd_usb_caiaqdev *dev,
+static void check_for_elapsed_periods(struct snd_usb_caiaqdev *cdev,
 				      struct snd_pcm_substream **subs)
 {
 	int stream, pb, *cnt;
 	struct snd_pcm_substream *sub;
 
-	for (stream = 0; stream < dev->n_streams; stream++) {
+	for (stream = 0; stream < cdev->n_streams; stream++) {
 		sub = subs[stream];
 		if (!sub)
 			continue;
 
 		pb = snd_pcm_lib_period_bytes(sub);
 		cnt = (sub->stream == SNDRV_PCM_STREAM_PLAYBACK) ?
-					&dev->period_out_count[stream] :
-					&dev->period_in_count[stream];
+					&cdev->period_out_count[stream] :
+					&cdev->period_in_count[stream];
 
 		if (*cnt >= pb) {
 			snd_pcm_period_elapsed(sub);
@@ -363,7 +363,7 @@ static void check_for_elapsed_periods(struct snd_usb_caiaqdev *dev,
 	}
 }
 
-static void read_in_urb_mode0(struct snd_usb_caiaqdev *dev,
+static void read_in_urb_mode0(struct snd_usb_caiaqdev *cdev,
 			      const struct urb *urb,
 			      const struct usb_iso_packet_descriptor *iso)
 {
@@ -371,27 +371,27 @@ static void read_in_urb_mode0(struct snd_usb_caiaqdev *dev,
 	struct snd_pcm_substream *sub;
 	int stream, i;
 
-	if (all_substreams_zero(dev->sub_capture))
+	if (all_substreams_zero(cdev->sub_capture))
 		return;
 
 	for (i = 0; i < iso->actual_length;) {
-		for (stream = 0; stream < dev->n_streams; stream++, i++) {
-			sub = dev->sub_capture[stream];
+		for (stream = 0; stream < cdev->n_streams; stream++, i++) {
+			sub = cdev->sub_capture[stream];
 			if (sub) {
 				struct snd_pcm_runtime *rt = sub->runtime;
 				char *audio_buf = rt->dma_area;
 				int sz = frames_to_bytes(rt, rt->buffer_size);
-				audio_buf[dev->audio_in_buf_pos[stream]++]
+				audio_buf[cdev->audio_in_buf_pos[stream]++]
 					= usb_buf[i];
-				dev->period_in_count[stream]++;
-				if (dev->audio_in_buf_pos[stream] == sz)
-					dev->audio_in_buf_pos[stream] = 0;
+				cdev->period_in_count[stream]++;
+				if (cdev->audio_in_buf_pos[stream] == sz)
+					cdev->audio_in_buf_pos[stream] = 0;
 			}
 		}
 	}
 }
 
-static void read_in_urb_mode2(struct snd_usb_caiaqdev *dev,
+static void read_in_urb_mode2(struct snd_usb_caiaqdev *cdev,
 			      const struct urb *urb,
 			      const struct usb_iso_packet_descriptor *iso)
 {
@@ -401,44 +401,44 @@ static void read_in_urb_mode2(struct snd_usb_caiaqdev *dev,
 	int stream, i;
 
 	for (i = 0; i < iso->actual_length;) {
-		if (i % (dev->n_streams * BYTES_PER_SAMPLE_USB) == 0) {
+		if (i % (cdev->n_streams * BYTES_PER_SAMPLE_USB) == 0) {
 			for (stream = 0;
-			     stream < dev->n_streams;
+			     stream < cdev->n_streams;
 			     stream++, i++) {
-				if (dev->first_packet)
+				if (cdev->first_packet)
 					continue;
 
-				check_byte = MAKE_CHECKBYTE(dev, stream, i);
+				check_byte = MAKE_CHECKBYTE(cdev, stream, i);
 
 				if ((usb_buf[i] & 0x3f) != check_byte)
-					dev->input_panic = 1;
+					cdev->input_panic = 1;
 
 				if (usb_buf[i] & 0x80)
-					dev->output_panic = 1;
+					cdev->output_panic = 1;
 			}
 		}
-		dev->first_packet = 0;
+		cdev->first_packet = 0;
 
-		for (stream = 0; stream < dev->n_streams; stream++, i++) {
-			sub = dev->sub_capture[stream];
-			if (dev->input_panic)
+		for (stream = 0; stream < cdev->n_streams; stream++, i++) {
+			sub = cdev->sub_capture[stream];
+			if (cdev->input_panic)
 				usb_buf[i] = 0;
 
 			if (sub) {
 				struct snd_pcm_runtime *rt = sub->runtime;
 				char *audio_buf = rt->dma_area;
 				int sz = frames_to_bytes(rt, rt->buffer_size);
-				audio_buf[dev->audio_in_buf_pos[stream]++] =
+				audio_buf[cdev->audio_in_buf_pos[stream]++] =
 					usb_buf[i];
-				dev->period_in_count[stream]++;
-				if (dev->audio_in_buf_pos[stream] == sz)
-					dev->audio_in_buf_pos[stream] = 0;
+				cdev->period_in_count[stream]++;
+				if (cdev->audio_in_buf_pos[stream] == sz)
+					cdev->audio_in_buf_pos[stream] = 0;
 			}
 		}
 	}
 }
 
-static void read_in_urb_mode3(struct snd_usb_caiaqdev *dev,
+static void read_in_urb_mode3(struct snd_usb_caiaqdev *cdev,
 			      const struct urb *urb,
 			      const struct usb_iso_packet_descriptor *iso)
 {
@@ -450,12 +450,12 @@ static void read_in_urb_mode3(struct snd_usb_caiaqdev *dev,
 		return;
 
 	for (i = 0; i < iso->actual_length;) {
-		for (stream = 0; stream < dev->n_streams; stream++) {
-			struct snd_pcm_substream *sub = dev->sub_capture[stream];
+		for (stream = 0; stream < cdev->n_streams; stream++) {
+			struct snd_pcm_substream *sub = cdev->sub_capture[stream];
 			char *audio_buf = NULL;
 			int c, n, sz = 0;
 
-			if (sub && !dev->input_panic) {
+			if (sub && !cdev->input_panic) {
 				struct snd_pcm_runtime *rt = sub->runtime;
 				audio_buf = rt->dma_area;
 				sz = frames_to_bytes(rt, rt->buffer_size);
@@ -465,23 +465,23 @@ static void read_in_urb_mode3(struct snd_usb_caiaqdev *dev,
 				/* 3 audio data bytes, followed by 1 check byte */
 				if (audio_buf) {
 					for (n = 0; n < BYTES_PER_SAMPLE; n++) {
-						audio_buf[dev->audio_in_buf_pos[stream]++] = usb_buf[i+n];
+						audio_buf[cdev->audio_in_buf_pos[stream]++] = usb_buf[i+n];
 
-						if (dev->audio_in_buf_pos[stream] == sz)
-							dev->audio_in_buf_pos[stream] = 0;
+						if (cdev->audio_in_buf_pos[stream] == sz)
+							cdev->audio_in_buf_pos[stream] = 0;
 					}
 
-					dev->period_in_count[stream] += BYTES_PER_SAMPLE;
+					cdev->period_in_count[stream] += BYTES_PER_SAMPLE;
 				}
 
 				i += BYTES_PER_SAMPLE;
 
 				if (usb_buf[i] != ((stream << 1) | c) &&
-				    !dev->first_packet) {
-					if (!dev->input_panic)
+				    !cdev->first_packet) {
+					if (!cdev->input_panic)
 						printk(" EXPECTED: %02x got %02x, c %d, stream %d, i %d\n",
 							((stream << 1) | c), usb_buf[i], c, stream, i);
-					dev->input_panic = 1;
+					cdev->input_panic = 1;
 				}
 
 				i++;
@@ -489,41 +489,41 @@ static void read_in_urb_mode3(struct snd_usb_caiaqdev *dev,
 		}
 	}
 
-	if (dev->first_packet > 0)
-		dev->first_packet--;
+	if (cdev->first_packet > 0)
+		cdev->first_packet--;
 }
 
-static void read_in_urb(struct snd_usb_caiaqdev *dev,
+static void read_in_urb(struct snd_usb_caiaqdev *cdev,
 			const struct urb *urb,
 			const struct usb_iso_packet_descriptor *iso)
 {
-	if (!dev->streaming)
+	if (!cdev->streaming)
 		return;
 
-	if (iso->actual_length < dev->bpp)
+	if (iso->actual_length < cdev->bpp)
 		return;
 
-	switch (dev->spec.data_alignment) {
+	switch (cdev->spec.data_alignment) {
 	case 0:
-		read_in_urb_mode0(dev, urb, iso);
+		read_in_urb_mode0(cdev, urb, iso);
 		break;
 	case 2:
-		read_in_urb_mode2(dev, urb, iso);
+		read_in_urb_mode2(cdev, urb, iso);
 		break;
 	case 3:
-		read_in_urb_mode3(dev, urb, iso);
+		read_in_urb_mode3(cdev, urb, iso);
 		break;
 	}
 
-	if ((dev->input_panic || dev->output_panic) && !dev->warned) {
+	if ((cdev->input_panic || cdev->output_panic) && !cdev->warned) {
 		debug("streaming error detected %s %s\n",
-				dev->input_panic ? "(input)" : "",
-				dev->output_panic ? "(output)" : "");
-		dev->warned = 1;
+				cdev->input_panic ? "(input)" : "",
+				cdev->output_panic ? "(output)" : "");
+		cdev->warned = 1;
 	}
 }
 
-static void fill_out_urb_mode_0(struct snd_usb_caiaqdev *dev,
+static void fill_out_urb_mode_0(struct snd_usb_caiaqdev *cdev,
 				struct urb *urb,
 				const struct usb_iso_packet_descriptor *iso)
 {
@@ -532,32 +532,32 @@ static void fill_out_urb_mode_0(struct snd_usb_caiaqdev *dev,
 	int stream, i;
 
 	for (i = 0; i < iso->length;) {
-		for (stream = 0; stream < dev->n_streams; stream++, i++) {
-			sub = dev->sub_playback[stream];
+		for (stream = 0; stream < cdev->n_streams; stream++, i++) {
+			sub = cdev->sub_playback[stream];
 			if (sub) {
 				struct snd_pcm_runtime *rt = sub->runtime;
 				char *audio_buf = rt->dma_area;
 				int sz = frames_to_bytes(rt, rt->buffer_size);
 				usb_buf[i] =
-					audio_buf[dev->audio_out_buf_pos[stream]];
-				dev->period_out_count[stream]++;
-				dev->audio_out_buf_pos[stream]++;
-				if (dev->audio_out_buf_pos[stream] == sz)
-					dev->audio_out_buf_pos[stream] = 0;
+					audio_buf[cdev->audio_out_buf_pos[stream]];
+				cdev->period_out_count[stream]++;
+				cdev->audio_out_buf_pos[stream]++;
+				if (cdev->audio_out_buf_pos[stream] == sz)
+					cdev->audio_out_buf_pos[stream] = 0;
 			} else
 				usb_buf[i] = 0;
 		}
 
 		/* fill in the check bytes */
-		if (dev->spec.data_alignment == 2 &&
-		    i % (dev->n_streams * BYTES_PER_SAMPLE_USB) ==
-		        (dev->n_streams * CHANNELS_PER_STREAM))
-			for (stream = 0; stream < dev->n_streams; stream++, i++)
-				usb_buf[i] = MAKE_CHECKBYTE(dev, stream, i);
+		if (cdev->spec.data_alignment == 2 &&
+		    i % (cdev->n_streams * BYTES_PER_SAMPLE_USB) ==
+		        (cdev->n_streams * CHANNELS_PER_STREAM))
+			for (stream = 0; stream < cdev->n_streams; stream++, i++)
+				usb_buf[i] = MAKE_CHECKBYTE(cdev, stream, i);
 	}
 }
 
-static void fill_out_urb_mode_3(struct snd_usb_caiaqdev *dev,
+static void fill_out_urb_mode_3(struct snd_usb_caiaqdev *cdev,
 				struct urb *urb,
 				const struct usb_iso_packet_descriptor *iso)
 {
@@ -565,8 +565,8 @@ static void fill_out_urb_mode_3(struct snd_usb_caiaqdev *dev,
 	int stream, i;
 
 	for (i = 0; i < iso->length;) {
-		for (stream = 0; stream < dev->n_streams; stream++) {
-			struct snd_pcm_substream *sub = dev->sub_playback[stream];
+		for (stream = 0; stream < cdev->n_streams; stream++) {
+			struct snd_pcm_substream *sub = cdev->sub_playback[stream];
 			char *audio_buf = NULL;
 			int c, n, sz = 0;
 
@@ -579,17 +579,17 @@ static void fill_out_urb_mode_3(struct snd_usb_caiaqdev *dev,
 			for (c = 0; c < CHANNELS_PER_STREAM; c++) {
 				for (n = 0; n < BYTES_PER_SAMPLE; n++) {
 					if (audio_buf) {
-						usb_buf[i+n] = audio_buf[dev->audio_out_buf_pos[stream]++];
+						usb_buf[i+n] = audio_buf[cdev->audio_out_buf_pos[stream]++];
 
-						if (dev->audio_out_buf_pos[stream] == sz)
-							dev->audio_out_buf_pos[stream] = 0;
+						if (cdev->audio_out_buf_pos[stream] == sz)
+							cdev->audio_out_buf_pos[stream] = 0;
 					} else {
 						usb_buf[i+n] = 0;
 					}
 				}
 
 				if (audio_buf)
-					dev->period_out_count[stream] += BYTES_PER_SAMPLE;
+					cdev->period_out_count[stream] += BYTES_PER_SAMPLE;
 
 				i += BYTES_PER_SAMPLE;
 
@@ -600,17 +600,17 @@ static void fill_out_urb_mode_3(struct snd_usb_caiaqdev *dev,
 	}
 }
 
-static inline void fill_out_urb(struct snd_usb_caiaqdev *dev,
+static inline void fill_out_urb(struct snd_usb_caiaqdev *cdev,
 				struct urb *urb,
 				const struct usb_iso_packet_descriptor *iso)
 {
-	switch (dev->spec.data_alignment) {
+	switch (cdev->spec.data_alignment) {
 	case 0:
 	case 2:
-		fill_out_urb_mode_0(dev, urb, iso);
+		fill_out_urb_mode_0(cdev, urb, iso);
 		break;
 	case 3:
-		fill_out_urb_mode_3(dev, urb, iso);
+		fill_out_urb_mode_3(cdev, urb, iso);
 		break;
 	}
 }
@@ -618,7 +618,7 @@ static inline void fill_out_urb(struct snd_usb_caiaqdev *dev,
 static void read_completed(struct urb *urb)
 {
 	struct snd_usb_caiaq_cb_info *info = urb->context;
-	struct snd_usb_caiaqdev *dev;
+	struct snd_usb_caiaqdev *cdev;
 	struct urb *out = NULL;
 	int i, frame, len, send_it = 0, outframe = 0;
 	size_t offset = 0;
@@ -626,15 +626,15 @@ static void read_completed(struct urb *urb)
 	if (urb->status || !info)
 		return;
 
-	dev = info->dev;
+	cdev = info->cdev;
 
-	if (!dev->streaming)
+	if (!cdev->streaming)
 		return;
 
 	/* find an unused output urb that is unused */
 	for (i = 0; i < N_URBS; i++)
-		if (test_and_set_bit(i, &dev->outurb_active_mask) == 0) {
-			out = dev->data_urbs_out[i];
+		if (test_and_set_bit(i, &cdev->outurb_active_mask) == 0) {
+			out = cdev->data_urbs_out[i];
 			break;
 		}
 
@@ -656,12 +656,12 @@ static void read_completed(struct urb *urb)
 		offset += len;
 
 		if (len > 0) {
-			spin_lock(&dev->spinlock);
-			fill_out_urb(dev, out, &out->iso_frame_desc[outframe]);
-			read_in_urb(dev, urb, &urb->iso_frame_desc[frame]);
-			spin_unlock(&dev->spinlock);
-			check_for_elapsed_periods(dev, dev->sub_playback);
-			check_for_elapsed_periods(dev, dev->sub_capture);
+			spin_lock(&cdev->spinlock);
+			fill_out_urb(cdev, out, &out->iso_frame_desc[outframe]);
+			read_in_urb(cdev, urb, &urb->iso_frame_desc[frame]);
+			spin_unlock(&cdev->spinlock);
+			check_for_elapsed_periods(cdev, cdev->sub_playback);
+			check_for_elapsed_periods(cdev, cdev->sub_capture);
 			send_it = 1;
 		}
 
@@ -674,7 +674,7 @@ static void read_completed(struct urb *urb)
 		usb_submit_urb(out, GFP_ATOMIC);
 	} else {
 		struct snd_usb_caiaq_cb_info *oinfo = out->context;
-		clear_bit(oinfo->index, &dev->outurb_active_mask);
+		clear_bit(oinfo->index, &cdev->outurb_active_mask);
 	}
 
 requeue:
@@ -693,21 +693,21 @@ requeue:
 static void write_completed(struct urb *urb)
 {
 	struct snd_usb_caiaq_cb_info *info = urb->context;
-	struct snd_usb_caiaqdev *dev = info->dev;
+	struct snd_usb_caiaqdev *cdev = info->cdev;
 
-	if (!dev->output_running) {
-		dev->output_running = 1;
-		wake_up(&dev->prepare_wait_queue);
+	if (!cdev->output_running) {
+		cdev->output_running = 1;
+		wake_up(&cdev->prepare_wait_queue);
 	}
 
-	clear_bit(info->index, &dev->outurb_active_mask);
+	clear_bit(info->index, &cdev->outurb_active_mask);
 }
 
-static struct urb **alloc_urbs(struct snd_usb_caiaqdev *dev, int dir, int *ret)
+static struct urb **alloc_urbs(struct snd_usb_caiaqdev *cdev, int dir, int *ret)
 {
 	int i, frame;
 	struct urb **urbs;
-	struct usb_device *usb_dev = dev->chip.dev;
+	struct usb_device *usb_dev = cdev->chip.dev;
 	unsigned int pipe;
 
 	pipe = (dir == SNDRV_PCM_STREAM_PLAYBACK) ?
@@ -749,7 +749,7 @@ static struct urb **alloc_urbs(struct snd_usb_caiaqdev *dev, int dir, int *ret)
 		urbs[i]->pipe = pipe;
 		urbs[i]->transfer_buffer_length = FRAMES_PER_URB
 						* BYTES_PER_FRAME;
-		urbs[i]->context = &dev->data_cb_info[i];
+		urbs[i]->context = &cdev->data_cb_info[i];
 		urbs[i]->interval = 1;
 		urbs[i]->transfer_flags = URB_ISO_ASAP;
 		urbs[i]->number_of_packets = FRAMES_PER_URB;
@@ -780,110 +780,110 @@ static void free_urbs(struct urb **urbs)
 	kfree(urbs);
 }
 
-int snd_usb_caiaq_audio_init(struct snd_usb_caiaqdev *dev)
+int snd_usb_caiaq_audio_init(struct snd_usb_caiaqdev *cdev)
 {
 	int i, ret;
 
-	dev->n_audio_in  = max(dev->spec.num_analog_audio_in,
-			       dev->spec.num_digital_audio_in) /
+	cdev->n_audio_in  = max(cdev->spec.num_analog_audio_in,
+			       cdev->spec.num_digital_audio_in) /
 				CHANNELS_PER_STREAM;
-	dev->n_audio_out = max(dev->spec.num_analog_audio_out,
-			       dev->spec.num_digital_audio_out) /
+	cdev->n_audio_out = max(cdev->spec.num_analog_audio_out,
+			       cdev->spec.num_digital_audio_out) /
 				CHANNELS_PER_STREAM;
-	dev->n_streams = max(dev->n_audio_in, dev->n_audio_out);
+	cdev->n_streams = max(cdev->n_audio_in, cdev->n_audio_out);
 
-	debug("dev->n_audio_in = %d\n", dev->n_audio_in);
-	debug("dev->n_audio_out = %d\n", dev->n_audio_out);
-	debug("dev->n_streams = %d\n", dev->n_streams);
+	debug("cdev->n_audio_in = %d\n", cdev->n_audio_in);
+	debug("cdev->n_audio_out = %d\n", cdev->n_audio_out);
+	debug("cdev->n_streams = %d\n", cdev->n_streams);
 
-	if (dev->n_streams > MAX_STREAMS) {
+	if (cdev->n_streams > MAX_STREAMS) {
 		log("unable to initialize device, too many streams.\n");
 		return -EINVAL;
 	}
 
-	ret = snd_pcm_new(dev->chip.card, dev->product_name, 0,
-			dev->n_audio_out, dev->n_audio_in, &dev->pcm);
+	ret = snd_pcm_new(cdev->chip.card, cdev->product_name, 0,
+			cdev->n_audio_out, cdev->n_audio_in, &cdev->pcm);
 
 	if (ret < 0) {
 		log("snd_pcm_new() returned %d\n", ret);
 		return ret;
 	}
 
-	dev->pcm->private_data = dev;
-	strlcpy(dev->pcm->name, dev->product_name, sizeof(dev->pcm->name));
+	cdev->pcm->private_data = cdev;
+	strlcpy(cdev->pcm->name, cdev->product_name, sizeof(cdev->pcm->name));
 
-	memset(dev->sub_playback, 0, sizeof(dev->sub_playback));
-	memset(dev->sub_capture, 0, sizeof(dev->sub_capture));
+	memset(cdev->sub_playback, 0, sizeof(cdev->sub_playback));
+	memset(cdev->sub_capture, 0, sizeof(cdev->sub_capture));
 
-	memcpy(&dev->pcm_info, &snd_usb_caiaq_pcm_hardware,
+	memcpy(&cdev->pcm_info, &snd_usb_caiaq_pcm_hardware,
 			sizeof(snd_usb_caiaq_pcm_hardware));
 
 	/* setup samplerates */
-	dev->samplerates = dev->pcm_info.rates;
-	switch (dev->chip.usb_id) {
+	cdev->samplerates = cdev->pcm_info.rates;
+	switch (cdev->chip.usb_id) {
 	case USB_ID(USB_VID_NATIVEINSTRUMENTS, USB_PID_AK1):
 	case USB_ID(USB_VID_NATIVEINSTRUMENTS, USB_PID_RIGKONTROL3):
 	case USB_ID(USB_VID_NATIVEINSTRUMENTS, USB_PID_SESSIONIO):
 	case USB_ID(USB_VID_NATIVEINSTRUMENTS, USB_PID_GUITARRIGMOBILE):
-		dev->samplerates |= SNDRV_PCM_RATE_192000;
+		cdev->samplerates |= SNDRV_PCM_RATE_192000;
 		/* fall thru */
 	case USB_ID(USB_VID_NATIVEINSTRUMENTS, USB_PID_AUDIO2DJ):
 	case USB_ID(USB_VID_NATIVEINSTRUMENTS, USB_PID_AUDIO4DJ):
 	case USB_ID(USB_VID_NATIVEINSTRUMENTS, USB_PID_AUDIO8DJ):
 	case USB_ID(USB_VID_NATIVEINSTRUMENTS, USB_PID_TRAKTORAUDIO2):
-		dev->samplerates |= SNDRV_PCM_RATE_88200;
+		cdev->samplerates |= SNDRV_PCM_RATE_88200;
 		break;
 	}
 
-	snd_pcm_set_ops(dev->pcm, SNDRV_PCM_STREAM_PLAYBACK,
+	snd_pcm_set_ops(cdev->pcm, SNDRV_PCM_STREAM_PLAYBACK,
 				&snd_usb_caiaq_ops);
-	snd_pcm_set_ops(dev->pcm, SNDRV_PCM_STREAM_CAPTURE,
+	snd_pcm_set_ops(cdev->pcm, SNDRV_PCM_STREAM_CAPTURE,
 				&snd_usb_caiaq_ops);
 
-	snd_pcm_lib_preallocate_pages_for_all(dev->pcm,
+	snd_pcm_lib_preallocate_pages_for_all(cdev->pcm,
 					SNDRV_DMA_TYPE_CONTINUOUS,
 					snd_dma_continuous_data(GFP_KERNEL),
 					MAX_BUFFER_SIZE, MAX_BUFFER_SIZE);
 
-	dev->data_cb_info =
+	cdev->data_cb_info =
 		kmalloc(sizeof(struct snd_usb_caiaq_cb_info) * N_URBS,
 					GFP_KERNEL);
 
-	if (!dev->data_cb_info)
+	if (!cdev->data_cb_info)
 		return -ENOMEM;
 
-	dev->outurb_active_mask = 0;
-	BUILD_BUG_ON(N_URBS > (sizeof(dev->outurb_active_mask) * 8));
+	cdev->outurb_active_mask = 0;
+	BUILD_BUG_ON(N_URBS > (sizeof(cdev->outurb_active_mask) * 8));
 
 	for (i = 0; i < N_URBS; i++) {
-		dev->data_cb_info[i].dev = dev;
-		dev->data_cb_info[i].index = i;
+		cdev->data_cb_info[i].cdev = cdev;
+		cdev->data_cb_info[i].index = i;
 	}
 
-	dev->data_urbs_in = alloc_urbs(dev, SNDRV_PCM_STREAM_CAPTURE, &ret);
+	cdev->data_urbs_in = alloc_urbs(cdev, SNDRV_PCM_STREAM_CAPTURE, &ret);
 	if (ret < 0) {
-		kfree(dev->data_cb_info);
-		free_urbs(dev->data_urbs_in);
+		kfree(cdev->data_cb_info);
+		free_urbs(cdev->data_urbs_in);
 		return ret;
 	}
 
-	dev->data_urbs_out = alloc_urbs(dev, SNDRV_PCM_STREAM_PLAYBACK, &ret);
+	cdev->data_urbs_out = alloc_urbs(cdev, SNDRV_PCM_STREAM_PLAYBACK, &ret);
 	if (ret < 0) {
-		kfree(dev->data_cb_info);
-		free_urbs(dev->data_urbs_in);
-		free_urbs(dev->data_urbs_out);
+		kfree(cdev->data_cb_info);
+		free_urbs(cdev->data_urbs_in);
+		free_urbs(cdev->data_urbs_out);
 		return ret;
 	}
 
 	return 0;
 }
 
-void snd_usb_caiaq_audio_free(struct snd_usb_caiaqdev *dev)
+void snd_usb_caiaq_audio_free(struct snd_usb_caiaqdev *cdev)
 {
-	debug("%s(%p)\n", __func__, dev);
-	stream_stop(dev);
-	free_urbs(dev->data_urbs_in);
-	free_urbs(dev->data_urbs_out);
-	kfree(dev->data_cb_info);
+	debug("%s(%p)\n", __func__, cdev);
+	stream_stop(cdev);
+	free_urbs(cdev->data_urbs_in);
+	free_urbs(cdev->data_urbs_out);
+	kfree(cdev->data_cb_info);
 }
 
diff --git a/sound/usb/caiaq/audio.h b/sound/usb/caiaq/audio.h
index 8ab1f8d..bdf1553 100644
--- a/sound/usb/caiaq/audio.h
+++ b/sound/usb/caiaq/audio.h
@@ -1,7 +1,7 @@
 #ifndef CAIAQ_AUDIO_H
 #define CAIAQ_AUDIO_H
 
-int snd_usb_caiaq_audio_init(struct snd_usb_caiaqdev *dev);
-void snd_usb_caiaq_audio_free(struct snd_usb_caiaqdev *dev);
+int snd_usb_caiaq_audio_init(struct snd_usb_caiaqdev *cdev);
+void snd_usb_caiaq_audio_free(struct snd_usb_caiaqdev *cdev);
 
 #endif /* CAIAQ_AUDIO_H */
diff --git a/sound/usb/caiaq/control.c b/sound/usb/caiaq/control.c
index adb8d03..2c51959 100644
--- a/sound/usb/caiaq/control.c
+++ b/sound/usb/caiaq/control.c
@@ -32,7 +32,7 @@ static int control_info(struct snd_kcontrol *kcontrol,
 			struct snd_ctl_elem_info *uinfo)
 {
 	struct snd_usb_audio *chip = snd_kcontrol_chip(kcontrol);
-	struct snd_usb_caiaqdev *dev = caiaqdev(chip->card);
+	struct snd_usb_caiaqdev *cdev = caiaqdev(chip->card);
 	int pos = kcontrol->private_value;
 	int is_intval = pos & CNT_INTVAL;
 	int maxval = 63;
@@ -40,7 +40,7 @@ static int control_info(struct snd_kcontrol *kcontrol,
 	uinfo->count = 1;
 	pos &= ~CNT_INTVAL;
 
-	switch (dev->chip.usb_id) {
+	switch (cdev->chip.usb_id) {
 	case USB_ID(USB_VID_NATIVEINSTRUMENTS, USB_PID_AUDIO8DJ):
 	case USB_ID(USB_VID_NATIVEINSTRUMENTS, USB_PID_AUDIO4DJ):
 		if (pos == 0) {
@@ -78,15 +78,15 @@ static int control_get(struct snd_kcontrol *kcontrol,
 		       struct snd_ctl_elem_value *ucontrol)
 {
 	struct snd_usb_audio *chip = snd_kcontrol_chip(kcontrol);
-	struct snd_usb_caiaqdev *dev = caiaqdev(chip->card);
+	struct snd_usb_caiaqdev *cdev = caiaqdev(chip->card);
 	int pos = kcontrol->private_value;
 
 	if (pos & CNT_INTVAL)
 		ucontrol->value.integer.value[0]
-			= dev->control_state[pos & ~CNT_INTVAL];
+			= cdev->control_state[pos & ~CNT_INTVAL];
 	else
 		ucontrol->value.integer.value[0]
-			= !!(dev->control_state[pos / 8] & (1 << pos % 8));
+			= !!(cdev->control_state[pos / 8] & (1 << pos % 8));
 
 	return 0;
 }
@@ -95,43 +95,43 @@ static int control_put(struct snd_kcontrol *kcontrol,
 		       struct snd_ctl_elem_value *ucontrol)
 {
 	struct snd_usb_audio *chip = snd_kcontrol_chip(kcontrol);
-	struct snd_usb_caiaqdev *dev = caiaqdev(chip->card);
+	struct snd_usb_caiaqdev *cdev = caiaqdev(chip->card);
 	int pos = kcontrol->private_value;
 	int v = ucontrol->value.integer.value[0];
 	unsigned char cmd = EP1_CMD_WRITE_IO;
 
-	if (dev->chip.usb_id ==
+	if (cdev->chip.usb_id ==
 		USB_ID(USB_VID_NATIVEINSTRUMENTS, USB_PID_TRAKTORKONTROLX1))
 		cmd = EP1_CMD_DIMM_LEDS;
 
 	if (pos & CNT_INTVAL) {
 		int i = pos & ~CNT_INTVAL;
 
-		dev->control_state[i] = v;
+		cdev->control_state[i] = v;
 
-		if (dev->chip.usb_id ==
+		if (cdev->chip.usb_id ==
 			USB_ID(USB_VID_NATIVEINSTRUMENTS, USB_PID_TRAKTORKONTROLS4)) {
 			int actual_len;
 
-			dev->ep8_out_buf[0] = i;
-			dev->ep8_out_buf[1] = v;
+			cdev->ep8_out_buf[0] = i;
+			cdev->ep8_out_buf[1] = v;
 
-			usb_bulk_msg(dev->chip.dev,
-				     usb_sndbulkpipe(dev->chip.dev, 8),
-				     dev->ep8_out_buf, sizeof(dev->ep8_out_buf),
+			usb_bulk_msg(cdev->chip.dev,
+				     usb_sndbulkpipe(cdev->chip.dev, 8),
+				     cdev->ep8_out_buf, sizeof(cdev->ep8_out_buf),
 				     &actual_len, 200);
 		} else {
-			snd_usb_caiaq_send_command(dev, cmd,
-					dev->control_state, sizeof(dev->control_state));
+			snd_usb_caiaq_send_command(cdev, cmd,
+					cdev->control_state, sizeof(cdev->control_state));
 		}
 	} else {
 		if (v)
-			dev->control_state[pos / 8] |= 1 << (pos % 8);
+			cdev->control_state[pos / 8] |= 1 << (pos % 8);
 		else
-			dev->control_state[pos / 8] &= ~(1 << (pos % 8));
+			cdev->control_state[pos / 8] &= ~(1 << (pos % 8));
 
-		snd_usb_caiaq_send_command(dev, cmd,
-				dev->control_state, sizeof(dev->control_state));
+		snd_usb_caiaq_send_command(cdev, cmd,
+				cdev->control_state, sizeof(cdev->control_state));
 	}
 
 	return 1;
@@ -490,7 +490,7 @@ static struct caiaq_controller kontrols4_controller[] = {
 };
 
 static int add_controls(struct caiaq_controller *c, int num,
-			struct snd_usb_caiaqdev *dev)
+			struct snd_usb_caiaqdev *cdev)
 {
 	int i, ret;
 	struct snd_kcontrol *kc;
@@ -498,8 +498,8 @@ static int add_controls(struct caiaq_controller *c, int num,
 	for (i = 0; i < num; i++, c++) {
 		kcontrol_template.name = c->name;
 		kcontrol_template.private_value = c->index;
-		kc = snd_ctl_new1(&kcontrol_template, dev);
-		ret = snd_ctl_add(dev->chip.card, kc);
+		kc = snd_ctl_new1(&kcontrol_template, cdev);
+		ret = snd_ctl_add(cdev->chip.card, kc);
 		if (ret < 0)
 			return ret;
 	}
@@ -507,50 +507,50 @@ static int add_controls(struct caiaq_controller *c, int num,
 	return 0;
 }
 
-int snd_usb_caiaq_control_init(struct snd_usb_caiaqdev *dev)
+int snd_usb_caiaq_control_init(struct snd_usb_caiaqdev *cdev)
 {
 	int ret = 0;
 
-	switch (dev->chip.usb_id) {
+	switch (cdev->chip.usb_id) {
 	case USB_ID(USB_VID_NATIVEINSTRUMENTS, USB_PID_AK1):
 		ret = add_controls(ak1_controller,
-			ARRAY_SIZE(ak1_controller), dev);
+			ARRAY_SIZE(ak1_controller), cdev);
 		break;
 
 	case USB_ID(USB_VID_NATIVEINSTRUMENTS, USB_PID_RIGKONTROL2):
 		ret = add_controls(rk2_controller,
-			ARRAY_SIZE(rk2_controller), dev);
+			ARRAY_SIZE(rk2_controller), cdev);
 		break;
 
 	case USB_ID(USB_VID_NATIVEINSTRUMENTS, USB_PID_RIGKONTROL3):
 		ret = add_controls(rk3_controller,
-			ARRAY_SIZE(rk3_controller), dev);
+			ARRAY_SIZE(rk3_controller), cdev);
 		break;
 
 	case USB_ID(USB_VID_NATIVEINSTRUMENTS, USB_PID_KORECONTROLLER):
 	case USB_ID(USB_VID_NATIVEINSTRUMENTS, USB_PID_KORECONTROLLER2):
 		ret = add_controls(kore_controller,
-			ARRAY_SIZE(kore_controller), dev);
+			ARRAY_SIZE(kore_controller), cdev);
 		break;
 
 	case USB_ID(USB_VID_NATIVEINSTRUMENTS, USB_PID_AUDIO8DJ):
 		ret = add_controls(a8dj_controller,
-			ARRAY_SIZE(a8dj_controller), dev);
+			ARRAY_SIZE(a8dj_controller), cdev);
 		break;
 
 	case USB_ID(USB_VID_NATIVEINSTRUMENTS, USB_PID_AUDIO4DJ):
 		ret = add_controls(a4dj_controller,
-			ARRAY_SIZE(a4dj_controller), dev);
+			ARRAY_SIZE(a4dj_controller), cdev);
 		break;
 
 	case USB_ID(USB_VID_NATIVEINSTRUMENTS, USB_PID_TRAKTORKONTROLX1):
 		ret = add_controls(kontrolx1_controller,
-			ARRAY_SIZE(kontrolx1_controller), dev);
+			ARRAY_SIZE(kontrolx1_controller), cdev);
 		break;
 
 	case USB_ID(USB_VID_NATIVEINSTRUMENTS, USB_PID_TRAKTORKONTROLS4):
 		ret = add_controls(kontrols4_controller,
-			ARRAY_SIZE(kontrols4_controller), dev);
+			ARRAY_SIZE(kontrols4_controller), cdev);
 		break;
 	}
 
diff --git a/sound/usb/caiaq/control.h b/sound/usb/caiaq/control.h
index 2e7ab1a..501c488 100644
--- a/sound/usb/caiaq/control.h
+++ b/sound/usb/caiaq/control.h
@@ -1,6 +1,6 @@
 #ifndef CAIAQ_CONTROL_H
 #define CAIAQ_CONTROL_H
 
-int snd_usb_caiaq_control_init(struct snd_usb_caiaqdev *dev);
+int snd_usb_caiaq_control_init(struct snd_usb_caiaqdev *cdev);
 
 #endif /* CAIAQ_CONTROL_H */
diff --git a/sound/usb/caiaq/device.c b/sound/usb/caiaq/device.c
index e4d6dbb..45c3853 100644
--- a/sound/usb/caiaq/device.c
+++ b/sound/usb/caiaq/device.c
@@ -158,67 +158,67 @@ static struct usb_device_id snd_usb_id_table[] = {
 static void usb_ep1_command_reply_dispatch (struct urb* urb)
 {
 	int ret;
-	struct snd_usb_caiaqdev *dev = urb->context;
+	struct snd_usb_caiaqdev *cdev = urb->context;
 	unsigned char *buf = urb->transfer_buffer;
 
-	if (urb->status || !dev) {
+	if (urb->status || !cdev) {
 		log("received EP1 urb->status = %i\n", urb->status);
 		return;
 	}
 
 	switch(buf[0]) {
 	case EP1_CMD_GET_DEVICE_INFO:
-	 	memcpy(&dev->spec, buf+1, sizeof(struct caiaq_device_spec));
-		dev->spec.fw_version = le16_to_cpu(dev->spec.fw_version);
+	 	memcpy(&cdev->spec, buf+1, sizeof(struct caiaq_device_spec));
+		cdev->spec.fw_version = le16_to_cpu(cdev->spec.fw_version);
 		debug("device spec (firmware %d): audio: %d in, %d out, "
 			"MIDI: %d in, %d out, data alignment %d\n",
-			dev->spec.fw_version,
-			dev->spec.num_analog_audio_in,
-			dev->spec.num_analog_audio_out,
-			dev->spec.num_midi_in,
-			dev->spec.num_midi_out,
-			dev->spec.data_alignment);
-
-		dev->spec_received++;
-		wake_up(&dev->ep1_wait_queue);
+			cdev->spec.fw_version,
+			cdev->spec.num_analog_audio_in,
+			cdev->spec.num_analog_audio_out,
+			cdev->spec.num_midi_in,
+			cdev->spec.num_midi_out,
+			cdev->spec.data_alignment);
+
+		cdev->spec_received++;
+		wake_up(&cdev->ep1_wait_queue);
 		break;
 	case EP1_CMD_AUDIO_PARAMS:
-		dev->audio_parm_answer = buf[1];
-		wake_up(&dev->ep1_wait_queue);
+		cdev->audio_parm_answer = buf[1];
+		wake_up(&cdev->ep1_wait_queue);
 		break;
 	case EP1_CMD_MIDI_READ:
-		snd_usb_caiaq_midi_handle_input(dev, buf[1], buf + 3, buf[2]);
+		snd_usb_caiaq_midi_handle_input(cdev, buf[1], buf + 3, buf[2]);
 		break;
 	case EP1_CMD_READ_IO:
-		if (dev->chip.usb_id ==
+		if (cdev->chip.usb_id ==
 			USB_ID(USB_VID_NATIVEINSTRUMENTS, USB_PID_AUDIO8DJ)) {
-			if (urb->actual_length > sizeof(dev->control_state))
-				urb->actual_length = sizeof(dev->control_state);
-			memcpy(dev->control_state, buf + 1, urb->actual_length);
-			wake_up(&dev->ep1_wait_queue);
+			if (urb->actual_length > sizeof(cdev->control_state))
+				urb->actual_length = sizeof(cdev->control_state);
+			memcpy(cdev->control_state, buf + 1, urb->actual_length);
+			wake_up(&cdev->ep1_wait_queue);
 			break;
 		}
 #ifdef CONFIG_SND_USB_CAIAQ_INPUT
 	case EP1_CMD_READ_ERP:
 	case EP1_CMD_READ_ANALOG:
-		snd_usb_caiaq_input_dispatch(dev, buf, urb->actual_length);
+		snd_usb_caiaq_input_dispatch(cdev, buf, urb->actual_length);
 #endif
 		break;
 	}
 
-	dev->ep1_in_urb.actual_length = 0;
-	ret = usb_submit_urb(&dev->ep1_in_urb, GFP_ATOMIC);
+	cdev->ep1_in_urb.actual_length = 0;
+	ret = usb_submit_urb(&cdev->ep1_in_urb, GFP_ATOMIC);
 	if (ret < 0)
 		log("unable to submit urb. OOM!?\n");
 }
 
-int snd_usb_caiaq_send_command(struct snd_usb_caiaqdev *dev,
+int snd_usb_caiaq_send_command(struct snd_usb_caiaqdev *cdev,
 			       unsigned char command,
 			       const unsigned char *buffer,
 			       int len)
 {
 	int actual_len;
-	struct usb_device *usb_dev = dev->chip.dev;
+	struct usb_device *usb_dev = cdev->chip.dev;
 
 	if (!usb_dev)
 		return -EIO;
@@ -227,14 +227,14 @@ int snd_usb_caiaq_send_command(struct snd_usb_caiaqdev *dev,
 		len = EP1_BUFSIZE - 1;
 
 	if (buffer && len > 0)
-		memcpy(dev->ep1_out_buf+1, buffer, len);
+		memcpy(cdev->ep1_out_buf+1, buffer, len);
 
-	dev->ep1_out_buf[0] = command;
+	cdev->ep1_out_buf[0] = command;
 	return usb_bulk_msg(usb_dev, usb_sndbulkpipe(usb_dev, 1),
-			   dev->ep1_out_buf, len+1, &actual_len, 200);
+			   cdev->ep1_out_buf, len+1, &actual_len, 200);
 }
 
-int snd_usb_caiaq_set_audio_params (struct snd_usb_caiaqdev *dev,
+int snd_usb_caiaq_set_audio_params (struct snd_usb_caiaqdev *cdev,
 		   		    int rate, int depth, int bpp)
 {
 	int ret;
@@ -262,46 +262,46 @@ int snd_usb_caiaq_set_audio_params (struct snd_usb_caiaqdev *dev,
 	debug("setting audio params: %d Hz, %d bits, %d bpp\n",
 		rate, depth, bpp);
 
-	dev->audio_parm_answer = -1;
-	ret = snd_usb_caiaq_send_command(dev, EP1_CMD_AUDIO_PARAMS,
+	cdev->audio_parm_answer = -1;
+	ret = snd_usb_caiaq_send_command(cdev, EP1_CMD_AUDIO_PARAMS,
 					 tmp, sizeof(tmp));
 
 	if (ret)
 		return ret;
 
-	if (!wait_event_timeout(dev->ep1_wait_queue,
-	    dev->audio_parm_answer >= 0, HZ))
+	if (!wait_event_timeout(cdev->ep1_wait_queue,
+	    cdev->audio_parm_answer >= 0, HZ))
 		return -EPIPE;
 
-	if (dev->audio_parm_answer != 1)
+	if (cdev->audio_parm_answer != 1)
 		debug("unable to set the device's audio params\n");
 	else
-		dev->bpp = bpp;
+		cdev->bpp = bpp;
 
-	return dev->audio_parm_answer == 1 ? 0 : -EINVAL;
+	return cdev->audio_parm_answer == 1 ? 0 : -EINVAL;
 }
 
-int snd_usb_caiaq_set_auto_msg(struct snd_usb_caiaqdev *dev,
+int snd_usb_caiaq_set_auto_msg(struct snd_usb_caiaqdev *cdev,
 			       int digital, int analog, int erp)
 {
 	char tmp[3] = { digital, analog, erp };
-	return snd_usb_caiaq_send_command(dev, EP1_CMD_AUTO_MSG,
+	return snd_usb_caiaq_send_command(cdev, EP1_CMD_AUTO_MSG,
 					  tmp, sizeof(tmp));
 }
 
-static void setup_card(struct snd_usb_caiaqdev *dev)
+static void setup_card(struct snd_usb_caiaqdev *cdev)
 {
 	int ret;
 	char val[4];
 
 	/* device-specific startup specials */
-	switch (dev->chip.usb_id) {
+	switch (cdev->chip.usb_id) {
 	case USB_ID(USB_VID_NATIVEINSTRUMENTS, USB_PID_RIGKONTROL2):
 		/* RigKontrol2 - display centered dash ('-') */
 		val[0] = 0x00;
 		val[1] = 0x00;
 		val[2] = 0x01;
-		snd_usb_caiaq_send_command(dev, EP1_CMD_WRITE_IO, val, 3);
+		snd_usb_caiaq_send_command(cdev, EP1_CMD_WRITE_IO, val, 3);
 		break;
 	case USB_ID(USB_VID_NATIVEINSTRUMENTS, USB_PID_RIGKONTROL3):
 		/* RigKontrol2 - display two centered dashes ('--') */
@@ -309,67 +309,67 @@ static void setup_card(struct snd_usb_caiaqdev *dev)
 		val[1] = 0x40;
 		val[2] = 0x40;
 		val[3] = 0x00;
-		snd_usb_caiaq_send_command(dev, EP1_CMD_WRITE_IO, val, 4);
+		snd_usb_caiaq_send_command(cdev, EP1_CMD_WRITE_IO, val, 4);
 		break;
 	case USB_ID(USB_VID_NATIVEINSTRUMENTS, USB_PID_AK1):
 		/* Audio Kontrol 1 - make USB-LED stop blinking */
 		val[0] = 0x00;
-		snd_usb_caiaq_send_command(dev, EP1_CMD_WRITE_IO, val, 1);
+		snd_usb_caiaq_send_command(cdev, EP1_CMD_WRITE_IO, val, 1);
 		break;
 	case USB_ID(USB_VID_NATIVEINSTRUMENTS, USB_PID_AUDIO8DJ):
 		/* Audio 8 DJ - trigger read of current settings */
-		dev->control_state[0] = 0xff;
-		snd_usb_caiaq_set_auto_msg(dev, 1, 0, 0);
-		snd_usb_caiaq_send_command(dev, EP1_CMD_READ_IO, NULL, 0);
+		cdev->control_state[0] = 0xff;
+		snd_usb_caiaq_set_auto_msg(cdev, 1, 0, 0);
+		snd_usb_caiaq_send_command(cdev, EP1_CMD_READ_IO, NULL, 0);
 
-		if (!wait_event_timeout(dev->ep1_wait_queue,
-					dev->control_state[0] != 0xff, HZ))
+		if (!wait_event_timeout(cdev->ep1_wait_queue,
+					cdev->control_state[0] != 0xff, HZ))
 			return;
 
 		/* fix up some defaults */
-		if ((dev->control_state[1] != 2) ||
-		    (dev->control_state[2] != 3) ||
-		    (dev->control_state[4] != 2)) {
-			dev->control_state[1] = 2;
-			dev->control_state[2] = 3;
-			dev->control_state[4] = 2;
-			snd_usb_caiaq_send_command(dev,
-				EP1_CMD_WRITE_IO, dev->control_state, 6);
+		if ((cdev->control_state[1] != 2) ||
+		    (cdev->control_state[2] != 3) ||
+		    (cdev->control_state[4] != 2)) {
+			cdev->control_state[1] = 2;
+			cdev->control_state[2] = 3;
+			cdev->control_state[4] = 2;
+			snd_usb_caiaq_send_command(cdev,
+				EP1_CMD_WRITE_IO, cdev->control_state, 6);
 		}
 
 		break;
 	}
 
-	if (dev->spec.num_analog_audio_out +
-	    dev->spec.num_analog_audio_in +
-	    dev->spec.num_digital_audio_out +
-	    dev->spec.num_digital_audio_in > 0) {
-		ret = snd_usb_caiaq_audio_init(dev);
+	if (cdev->spec.num_analog_audio_out +
+	    cdev->spec.num_analog_audio_in +
+	    cdev->spec.num_digital_audio_out +
+	    cdev->spec.num_digital_audio_in > 0) {
+		ret = snd_usb_caiaq_audio_init(cdev);
 		if (ret < 0)
 			log("Unable to set up audio system (ret=%d)\n", ret);
 	}
 
-	if (dev->spec.num_midi_in +
-	    dev->spec.num_midi_out > 0) {
-		ret = snd_usb_caiaq_midi_init(dev);
+	if (cdev->spec.num_midi_in +
+	    cdev->spec.num_midi_out > 0) {
+		ret = snd_usb_caiaq_midi_init(cdev);
 		if (ret < 0)
 			log("Unable to set up MIDI system (ret=%d)\n", ret);
 	}
 
 #ifdef CONFIG_SND_USB_CAIAQ_INPUT
-	ret = snd_usb_caiaq_input_init(dev);
+	ret = snd_usb_caiaq_input_init(cdev);
 	if (ret < 0)
 		log("Unable to set up input system (ret=%d)\n", ret);
 #endif
 
 	/* finally, register the card and all its sub-instances */
-	ret = snd_card_register(dev->chip.card);
+	ret = snd_card_register(cdev->chip.card);
 	if (ret < 0) {
 		log("snd_card_register() returned %d\n", ret);
-		snd_card_free(dev->chip.card);
+		snd_card_free(cdev->chip.card);
 	}
 
-	ret = snd_usb_caiaq_control_init(dev);
+	ret = snd_usb_caiaq_control_init(cdev);
 	if (ret < 0)
 		log("Unable to set up control system (ret=%d)\n", ret);
 }
@@ -381,7 +381,7 @@ static int create_card(struct usb_device *usb_dev,
 	int devnum;
 	int err;
 	struct snd_card *card;
-	struct snd_usb_caiaqdev *dev;
+	struct snd_usb_caiaqdev *cdev;
 
 	for (devnum = 0; devnum < SNDRV_CARDS; devnum++)
 		if (enable[devnum] && !snd_card_used[devnum])
@@ -395,23 +395,23 @@ static int create_card(struct usb_device *usb_dev,
 	if (err < 0)
 		return err;
 
-	dev = caiaqdev(card);
-	dev->chip.dev = usb_dev;
-	dev->chip.card = card;
-	dev->chip.usb_id = USB_ID(le16_to_cpu(usb_dev->descriptor.idVendor),
+	cdev = caiaqdev(card);
+	cdev->chip.dev = usb_dev;
+	cdev->chip.card = card;
+	cdev->chip.usb_id = USB_ID(le16_to_cpu(usb_dev->descriptor.idVendor),
 				  le16_to_cpu(usb_dev->descriptor.idProduct));
-	spin_lock_init(&dev->spinlock);
+	spin_lock_init(&cdev->spinlock);
 	snd_card_set_dev(card, &intf->dev);
 
 	*cardp = card;
 	return 0;
 }
 
-static int init_card(struct snd_usb_caiaqdev *dev)
+static int init_card(struct snd_usb_caiaqdev *cdev)
 {
 	char *c, usbpath[32];
-	struct usb_device *usb_dev = dev->chip.dev;
-	struct snd_card *card = dev->chip.card;
+	struct usb_device *usb_dev = cdev->chip.dev;
+	struct snd_card *card = cdev->chip.card;
 	int err, len;
 
 	if (usb_set_interface(usb_dev, 0, 1) != 0) {
@@ -419,41 +419,41 @@ static int init_card(struct snd_usb_caiaqdev *dev)
 		return -EIO;
 	}
 
-	usb_init_urb(&dev->ep1_in_urb);
-	usb_init_urb(&dev->midi_out_urb);
+	usb_init_urb(&cdev->ep1_in_urb);
+	usb_init_urb(&cdev->midi_out_urb);
 
-	usb_fill_bulk_urb(&dev->ep1_in_urb, usb_dev,
+	usb_fill_bulk_urb(&cdev->ep1_in_urb, usb_dev,
 			  usb_rcvbulkpipe(usb_dev, 0x1),
-			  dev->ep1_in_buf, EP1_BUFSIZE,
-			  usb_ep1_command_reply_dispatch, dev);
+			  cdev->ep1_in_buf, EP1_BUFSIZE,
+			  usb_ep1_command_reply_dispatch, cdev);
 
-	usb_fill_bulk_urb(&dev->midi_out_urb, usb_dev,
+	usb_fill_bulk_urb(&cdev->midi_out_urb, usb_dev,
 			  usb_sndbulkpipe(usb_dev, 0x1),
-			  dev->midi_out_buf, EP1_BUFSIZE,
-			  snd_usb_caiaq_midi_output_done, dev);
+			  cdev->midi_out_buf, EP1_BUFSIZE,
+			  snd_usb_caiaq_midi_output_done, cdev);
 
-	init_waitqueue_head(&dev->ep1_wait_queue);
-	init_waitqueue_head(&dev->prepare_wait_queue);
+	init_waitqueue_head(&cdev->ep1_wait_queue);
+	init_waitqueue_head(&cdev->prepare_wait_queue);
 
-	if (usb_submit_urb(&dev->ep1_in_urb, GFP_KERNEL) != 0)
+	if (usb_submit_urb(&cdev->ep1_in_urb, GFP_KERNEL) != 0)
 		return -EIO;
 
-	err = snd_usb_caiaq_send_command(dev, EP1_CMD_GET_DEVICE_INFO, NULL, 0);
+	err = snd_usb_caiaq_send_command(cdev, EP1_CMD_GET_DEVICE_INFO, NULL, 0);
 	if (err)
 		return err;
 
-	if (!wait_event_timeout(dev->ep1_wait_queue, dev->spec_received, HZ))
+	if (!wait_event_timeout(cdev->ep1_wait_queue, cdev->spec_received, HZ))
 		return -ENODEV;
 
 	usb_string(usb_dev, usb_dev->descriptor.iManufacturer,
-		   dev->vendor_name, CAIAQ_USB_STR_LEN);
+		   cdev->vendor_name, CAIAQ_USB_STR_LEN);
 
 	usb_string(usb_dev, usb_dev->descriptor.iProduct,
-		   dev->product_name, CAIAQ_USB_STR_LEN);
+		   cdev->product_name, CAIAQ_USB_STR_LEN);
 
 	strlcpy(card->driver, MODNAME, sizeof(card->driver));
-	strlcpy(card->shortname, dev->product_name, sizeof(card->shortname));
-	strlcpy(card->mixername, dev->product_name, sizeof(card->mixername));
+	strlcpy(card->shortname, cdev->product_name, sizeof(card->shortname));
+	strlcpy(card->mixername, cdev->product_name, sizeof(card->mixername));
 
 	/* if the id was not passed as module option, fill it with a shortened
 	 * version of the product string which does not contain any
@@ -475,9 +475,9 @@ static int init_card(struct snd_usb_caiaqdev *dev)
 	usb_make_path(usb_dev, usbpath, sizeof(usbpath));
 	snprintf(card->longname, sizeof(card->longname),
 		       "%s %s (%s)",
-		       dev->vendor_name, dev->product_name, usbpath);
+		       cdev->vendor_name, cdev->product_name, usbpath);
 
-	setup_card(dev);
+	setup_card(cdev);
 	return 0;
 }
 
@@ -486,9 +486,9 @@ static int snd_probe(struct usb_interface *intf,
 {
 	int ret;
 	struct snd_card *card = NULL;
-	struct usb_device *device = interface_to_usbdev(intf);
+	struct usb_device *usb_dev = interface_to_usbdev(intf);
 
-	ret = create_card(device, intf, &card);
+	ret = create_card(usb_dev, intf, &card);
 
 	if (ret < 0)
 		return ret;
@@ -506,7 +506,7 @@ static int snd_probe(struct usb_interface *intf,
 
 static void snd_disconnect(struct usb_interface *intf)
 {
-	struct snd_usb_caiaqdev *dev;
+	struct snd_usb_caiaqdev *cdev;
 	struct snd_card *card = usb_get_intfdata(intf);
 
 	debug("%s(%p)\n", __func__, intf);
@@ -514,16 +514,16 @@ static void snd_disconnect(struct usb_interface *intf)
 	if (!card)
 		return;
 
-	dev = caiaqdev(card);
+	cdev = caiaqdev(card);
 	snd_card_disconnect(card);
 
 #ifdef CONFIG_SND_USB_CAIAQ_INPUT
-	snd_usb_caiaq_input_free(dev);
+	snd_usb_caiaq_input_free(cdev);
 #endif
-	snd_usb_caiaq_audio_free(dev);
+	snd_usb_caiaq_audio_free(cdev);
 
-	usb_kill_urb(&dev->ep1_in_urb);
-	usb_kill_urb(&dev->midi_out_urb);
+	usb_kill_urb(&cdev->ep1_in_urb);
+	usb_kill_urb(&cdev->midi_out_urb);
 
 	snd_card_free(card);
 	usb_reset_device(interface_to_usbdev(intf));
diff --git a/sound/usb/caiaq/device.h b/sound/usb/caiaq/device.h
index 562b0bf..7176a0e 100644
--- a/sound/usb/caiaq/device.h
+++ b/sound/usb/caiaq/device.h
@@ -124,15 +124,15 @@ struct snd_usb_caiaqdev {
 };
 
 struct snd_usb_caiaq_cb_info {
-	struct snd_usb_caiaqdev *dev;
+	struct snd_usb_caiaqdev *cdev;
 	int index;
 };
 
 #define caiaqdev(c) ((struct snd_usb_caiaqdev*)(c)->private_data)
 
-int snd_usb_caiaq_set_audio_params (struct snd_usb_caiaqdev *dev, int rate, int depth, int bbp);
-int snd_usb_caiaq_set_auto_msg (struct snd_usb_caiaqdev *dev, int digital, int analog, int erp);
-int snd_usb_caiaq_send_command(struct snd_usb_caiaqdev *dev,
+int snd_usb_caiaq_set_audio_params (struct snd_usb_caiaqdev *cdev, int rate, int depth, int bbp);
+int snd_usb_caiaq_set_auto_msg (struct snd_usb_caiaqdev *cdev, int digital, int analog, int erp);
+int snd_usb_caiaq_send_command(struct snd_usb_caiaqdev *cdev,
 			       unsigned char command,
 			       const unsigned char *buffer,
 			       int len);
diff --git a/sound/usb/caiaq/input.c b/sound/usb/caiaq/input.c
index 26a121b..a32ad7c 100644
--- a/sound/usb/caiaq/input.c
+++ b/sound/usb/caiaq/input.c
@@ -199,55 +199,55 @@ static unsigned int decode_erp(unsigned char a, unsigned char b)
 #undef HIGH_PEAK
 #undef LOW_PEAK
 
-static inline void snd_caiaq_input_report_abs(struct snd_usb_caiaqdev *dev,
+static inline void snd_caiaq_input_report_abs(struct snd_usb_caiaqdev *cdev,
 					      int axis, const unsigned char *buf,
 					      int offset)
 {
-	input_report_abs(dev->input_dev, axis,
+	input_report_abs(cdev->input_dev, axis,
 			 (buf[offset * 2] << 8) | buf[offset * 2 + 1]);
 }
 
-static void snd_caiaq_input_read_analog(struct snd_usb_caiaqdev *dev,
+static void snd_caiaq_input_read_analog(struct snd_usb_caiaqdev *cdev,
 					const unsigned char *buf,
 					unsigned int len)
 {
-	struct input_dev *input_dev = dev->input_dev;
+	struct input_dev *input_dev = cdev->input_dev;
 
-	switch (dev->chip.usb_id) {
+	switch (cdev->chip.usb_id) {
 	case USB_ID(USB_VID_NATIVEINSTRUMENTS, USB_PID_RIGKONTROL2):
-		snd_caiaq_input_report_abs(dev, ABS_X, buf, 2);
-		snd_caiaq_input_report_abs(dev, ABS_Y, buf, 0);
-		snd_caiaq_input_report_abs(dev, ABS_Z, buf, 1);
+		snd_caiaq_input_report_abs(cdev, ABS_X, buf, 2);
+		snd_caiaq_input_report_abs(cdev, ABS_Y, buf, 0);
+		snd_caiaq_input_report_abs(cdev, ABS_Z, buf, 1);
 		break;
 	case USB_ID(USB_VID_NATIVEINSTRUMENTS, USB_PID_RIGKONTROL3):
 	case USB_ID(USB_VID_NATIVEINSTRUMENTS, USB_PID_KORECONTROLLER):
 	case USB_ID(USB_VID_NATIVEINSTRUMENTS, USB_PID_KORECONTROLLER2):
-		snd_caiaq_input_report_abs(dev, ABS_X, buf, 0);
-		snd_caiaq_input_report_abs(dev, ABS_Y, buf, 1);
-		snd_caiaq_input_report_abs(dev, ABS_Z, buf, 2);
+		snd_caiaq_input_report_abs(cdev, ABS_X, buf, 0);
+		snd_caiaq_input_report_abs(cdev, ABS_Y, buf, 1);
+		snd_caiaq_input_report_abs(cdev, ABS_Z, buf, 2);
 		break;
 	case USB_ID(USB_VID_NATIVEINSTRUMENTS, USB_PID_TRAKTORKONTROLX1):
-		snd_caiaq_input_report_abs(dev, ABS_HAT0X, buf, 4);
-		snd_caiaq_input_report_abs(dev, ABS_HAT0Y, buf, 2);
-		snd_caiaq_input_report_abs(dev, ABS_HAT1X, buf, 6);
-		snd_caiaq_input_report_abs(dev, ABS_HAT1Y, buf, 1);
-		snd_caiaq_input_report_abs(dev, ABS_HAT2X, buf, 7);
-		snd_caiaq_input_report_abs(dev, ABS_HAT2Y, buf, 0);
-		snd_caiaq_input_report_abs(dev, ABS_HAT3X, buf, 5);
-		snd_caiaq_input_report_abs(dev, ABS_HAT3Y, buf, 3);
+		snd_caiaq_input_report_abs(cdev, ABS_HAT0X, buf, 4);
+		snd_caiaq_input_report_abs(cdev, ABS_HAT0Y, buf, 2);
+		snd_caiaq_input_report_abs(cdev, ABS_HAT1X, buf, 6);
+		snd_caiaq_input_report_abs(cdev, ABS_HAT1Y, buf, 1);
+		snd_caiaq_input_report_abs(cdev, ABS_HAT2X, buf, 7);
+		snd_caiaq_input_report_abs(cdev, ABS_HAT2Y, buf, 0);
+		snd_caiaq_input_report_abs(cdev, ABS_HAT3X, buf, 5);
+		snd_caiaq_input_report_abs(cdev, ABS_HAT3Y, buf, 3);
 		break;
 	}
 
 	input_sync(input_dev);
 }
 
-static void snd_caiaq_input_read_erp(struct snd_usb_caiaqdev *dev,
+static void snd_caiaq_input_read_erp(struct snd_usb_caiaqdev *cdev,
 				     const char *buf, unsigned int len)
 {
-	struct input_dev *input_dev = dev->input_dev;
+	struct input_dev *input_dev = cdev->input_dev;
 	int i;
 
-	switch (dev->chip.usb_id) {
+	switch (cdev->chip.usb_id) {
 	case USB_ID(USB_VID_NATIVEINSTRUMENTS, USB_PID_AK1):
 		i = decode_erp(buf[0], buf[1]);
 		input_report_abs(input_dev, ABS_X, i);
@@ -299,10 +299,10 @@ static void snd_caiaq_input_read_erp(struct snd_usb_caiaqdev *dev,
 	}
 }
 
-static void snd_caiaq_input_read_io(struct snd_usb_caiaqdev *dev,
+static void snd_caiaq_input_read_io(struct snd_usb_caiaqdev *cdev,
 				    unsigned char *buf, unsigned int len)
 {
-	struct input_dev *input_dev = dev->input_dev;
+	struct input_dev *input_dev = cdev->input_dev;
 	unsigned short *keycode = input_dev->keycode;
 	int i;
 
@@ -317,17 +317,17 @@ static void snd_caiaq_input_read_io(struct snd_usb_caiaqdev *dev,
 		input_report_key(input_dev, keycode[i],
 				 buf[i / 8] & (1 << (i % 8)));
 
-	switch (dev->chip.usb_id) {
+	switch (cdev->chip.usb_id) {
 	case USB_ID(USB_VID_NATIVEINSTRUMENTS, USB_PID_KORECONTROLLER):
 	case USB_ID(USB_VID_NATIVEINSTRUMENTS, USB_PID_KORECONTROLLER2):
-		input_report_abs(dev->input_dev, ABS_MISC, 255 - buf[4]);
+		input_report_abs(cdev->input_dev, ABS_MISC, 255 - buf[4]);
 		break;
 	case USB_ID(USB_VID_NATIVEINSTRUMENTS, USB_PID_TRAKTORKONTROLX1):
 		/* rotary encoders */
-		input_report_abs(dev->input_dev, ABS_X, buf[5] & 0xf);
-		input_report_abs(dev->input_dev, ABS_Y, buf[5] >> 4);
-		input_report_abs(dev->input_dev, ABS_Z, buf[6] & 0xf);
-		input_report_abs(dev->input_dev, ABS_MISC, buf[6] >> 4);
+		input_report_abs(cdev->input_dev, ABS_X, buf[5] & 0xf);
+		input_report_abs(cdev->input_dev, ABS_Y, buf[5] >> 4);
+		input_report_abs(cdev->input_dev, ABS_Z, buf[6] & 0xf);
+		input_report_abs(cdev->input_dev, ABS_MISC, buf[6] >> 4);
 		break;
 	}
 
@@ -336,7 +336,7 @@ static void snd_caiaq_input_read_io(struct snd_usb_caiaqdev *dev,
 
 #define TKS4_MSGBLOCK_SIZE	16
 
-static void snd_usb_caiaq_tks4_dispatch(struct snd_usb_caiaqdev *dev,
+static void snd_usb_caiaq_tks4_dispatch(struct snd_usb_caiaqdev *cdev,
 					const unsigned char *buf,
 					unsigned int len)
 {
@@ -347,121 +347,121 @@ static void snd_usb_caiaq_tks4_dispatch(struct snd_usb_caiaqdev *dev,
 		case 0:
 			/* buttons */
 			for (i = 0; i < KONTROLS4_BUTTONS; i++)
-				input_report_key(dev->input_dev, KONTROLS4_BUTTON(i),
+				input_report_key(cdev->input_dev, KONTROLS4_BUTTON(i),
 						 (buf[4 + (i / 8)] >> (i % 8)) & 1);
 			break;
 
 		case 1:
 			/* left wheel */
-			input_report_abs(dev->input_dev, KONTROLS4_ABS(36), buf[9] | ((buf[8] & 0x3) << 8));
+			input_report_abs(cdev->input_dev, KONTROLS4_ABS(36), buf[9] | ((buf[8] & 0x3) << 8));
 			/* right wheel */
-			input_report_abs(dev->input_dev, KONTROLS4_ABS(37), buf[13] | ((buf[12] & 0x3) << 8));
+			input_report_abs(cdev->input_dev, KONTROLS4_ABS(37), buf[13] | ((buf[12] & 0x3) << 8));
 
 			/* rotary encoders */
-			input_report_abs(dev->input_dev, KONTROLS4_ABS(38), buf[3] & 0xf);
-			input_report_abs(dev->input_dev, KONTROLS4_ABS(39), buf[4] >> 4);
-			input_report_abs(dev->input_dev, KONTROLS4_ABS(40), buf[4] & 0xf);
-			input_report_abs(dev->input_dev, KONTROLS4_ABS(41), buf[5] >> 4);
-			input_report_abs(dev->input_dev, KONTROLS4_ABS(42), buf[5] & 0xf);
-			input_report_abs(dev->input_dev, KONTROLS4_ABS(43), buf[6] >> 4);
-			input_report_abs(dev->input_dev, KONTROLS4_ABS(44), buf[6] & 0xf);
-			input_report_abs(dev->input_dev, KONTROLS4_ABS(45), buf[7] >> 4);
-			input_report_abs(dev->input_dev, KONTROLS4_ABS(46), buf[7] & 0xf);
+			input_report_abs(cdev->input_dev, KONTROLS4_ABS(38), buf[3] & 0xf);
+			input_report_abs(cdev->input_dev, KONTROLS4_ABS(39), buf[4] >> 4);
+			input_report_abs(cdev->input_dev, KONTROLS4_ABS(40), buf[4] & 0xf);
+			input_report_abs(cdev->input_dev, KONTROLS4_ABS(41), buf[5] >> 4);
+			input_report_abs(cdev->input_dev, KONTROLS4_ABS(42), buf[5] & 0xf);
+			input_report_abs(cdev->input_dev, KONTROLS4_ABS(43), buf[6] >> 4);
+			input_report_abs(cdev->input_dev, KONTROLS4_ABS(44), buf[6] & 0xf);
+			input_report_abs(cdev->input_dev, KONTROLS4_ABS(45), buf[7] >> 4);
+			input_report_abs(cdev->input_dev, KONTROLS4_ABS(46), buf[7] & 0xf);
 
 			break;
 		case 2:
 			/* Volume Fader Channel D */
-			snd_caiaq_input_report_abs(dev, KONTROLS4_ABS(0), buf, 1);
+			snd_caiaq_input_report_abs(cdev, KONTROLS4_ABS(0), buf, 1);
 			/* Volume Fader Channel B */
-			snd_caiaq_input_report_abs(dev, KONTROLS4_ABS(1), buf, 2);
+			snd_caiaq_input_report_abs(cdev, KONTROLS4_ABS(1), buf, 2);
 			/* Volume Fader Channel A */
-			snd_caiaq_input_report_abs(dev, KONTROLS4_ABS(2), buf, 3);
+			snd_caiaq_input_report_abs(cdev, KONTROLS4_ABS(2), buf, 3);
 			/* Volume Fader Channel C */
-			snd_caiaq_input_report_abs(dev, KONTROLS4_ABS(3), buf, 4);
+			snd_caiaq_input_report_abs(cdev, KONTROLS4_ABS(3), buf, 4);
 			/* Loop Volume */
-			snd_caiaq_input_report_abs(dev, KONTROLS4_ABS(4), buf, 6);
+			snd_caiaq_input_report_abs(cdev, KONTROLS4_ABS(4), buf, 6);
 			/* Crossfader */
-			snd_caiaq_input_report_abs(dev, KONTROLS4_ABS(7), buf, 7);
+			snd_caiaq_input_report_abs(cdev, KONTROLS4_ABS(7), buf, 7);
 
 			break;
 
 		case 3:
 			/* Tempo Fader R */
-			snd_caiaq_input_report_abs(dev, KONTROLS4_ABS(6), buf, 3);
+			snd_caiaq_input_report_abs(cdev, KONTROLS4_ABS(6), buf, 3);
 			/* Tempo Fader L */
-			snd_caiaq_input_report_abs(dev, KONTROLS4_ABS(5), buf, 4);
+			snd_caiaq_input_report_abs(cdev, KONTROLS4_ABS(5), buf, 4);
 			/* Mic Volume */
-			snd_caiaq_input_report_abs(dev, KONTROLS4_ABS(8), buf, 6);
+			snd_caiaq_input_report_abs(cdev, KONTROLS4_ABS(8), buf, 6);
 			/* Cue Mix */
-			snd_caiaq_input_report_abs(dev, KONTROLS4_ABS(9), buf, 7);
+			snd_caiaq_input_report_abs(cdev, KONTROLS4_ABS(9), buf, 7);
 
 			break;
 
 		case 4:
 			/* Wheel distance sensor L */
-			snd_caiaq_input_report_abs(dev, KONTROLS4_ABS(10), buf, 1);
+			snd_caiaq_input_report_abs(cdev, KONTROLS4_ABS(10), buf, 1);
 			/* Wheel distance sensor R */
-			snd_caiaq_input_report_abs(dev, KONTROLS4_ABS(11), buf, 2);
+			snd_caiaq_input_report_abs(cdev, KONTROLS4_ABS(11), buf, 2);
 			/* Channel D EQ - Filter */
-			snd_caiaq_input_report_abs(dev, KONTROLS4_ABS(12), buf, 3);
+			snd_caiaq_input_report_abs(cdev, KONTROLS4_ABS(12), buf, 3);
 			/* Channel D EQ - Low */
-			snd_caiaq_input_report_abs(dev, KONTROLS4_ABS(13), buf, 4);
+			snd_caiaq_input_report_abs(cdev, KONTROLS4_ABS(13), buf, 4);
 			/* Channel D EQ - Mid */
-			snd_caiaq_input_report_abs(dev, KONTROLS4_ABS(14), buf, 5);
+			snd_caiaq_input_report_abs(cdev, KONTROLS4_ABS(14), buf, 5);
 			/* Channel D EQ - Hi */
-			snd_caiaq_input_report_abs(dev, KONTROLS4_ABS(15), buf, 6);
+			snd_caiaq_input_report_abs(cdev, KONTROLS4_ABS(15), buf, 6);
 			/* FX2 - dry/wet */
-			snd_caiaq_input_report_abs(dev, KONTROLS4_ABS(16), buf, 7);
+			snd_caiaq_input_report_abs(cdev, KONTROLS4_ABS(16), buf, 7);
 
 			break;
 
 		case 5:
 			/* FX2 - 1 */
-			snd_caiaq_input_report_abs(dev, KONTROLS4_ABS(17), buf, 1);
+			snd_caiaq_input_report_abs(cdev, KONTROLS4_ABS(17), buf, 1);
 			/* FX2 - 2 */
-			snd_caiaq_input_report_abs(dev, KONTROLS4_ABS(18), buf, 2);
+			snd_caiaq_input_report_abs(cdev, KONTROLS4_ABS(18), buf, 2);
 			/* FX2 - 3 */
-			snd_caiaq_input_report_abs(dev, KONTROLS4_ABS(19), buf, 3);
+			snd_caiaq_input_report_abs(cdev, KONTROLS4_ABS(19), buf, 3);
 			/* Channel B EQ - Filter */
-			snd_caiaq_input_report_abs(dev, KONTROLS4_ABS(20), buf, 4);
+			snd_caiaq_input_report_abs(cdev, KONTROLS4_ABS(20), buf, 4);
 			/* Channel B EQ - Low */
-			snd_caiaq_input_report_abs(dev, KONTROLS4_ABS(21), buf, 5);
+			snd_caiaq_input_report_abs(cdev, KONTROLS4_ABS(21), buf, 5);
 			/* Channel B EQ - Mid */
-			snd_caiaq_input_report_abs(dev, KONTROLS4_ABS(22), buf, 6);
+			snd_caiaq_input_report_abs(cdev, KONTROLS4_ABS(22), buf, 6);
 			/* Channel B EQ - Hi */
-			snd_caiaq_input_report_abs(dev, KONTROLS4_ABS(23), buf, 7);
+			snd_caiaq_input_report_abs(cdev, KONTROLS4_ABS(23), buf, 7);
 
 			break;
 
 		case 6:
 			/* Channel A EQ - Filter */
-			snd_caiaq_input_report_abs(dev, KONTROLS4_ABS(24), buf, 1);
+			snd_caiaq_input_report_abs(cdev, KONTROLS4_ABS(24), buf, 1);
 			/* Channel A EQ - Low */
-			snd_caiaq_input_report_abs(dev, KONTROLS4_ABS(25), buf, 2);
+			snd_caiaq_input_report_abs(cdev, KONTROLS4_ABS(25), buf, 2);
 			/* Channel A EQ - Mid */
-			snd_caiaq_input_report_abs(dev, KONTROLS4_ABS(26), buf, 3);
+			snd_caiaq_input_report_abs(cdev, KONTROLS4_ABS(26), buf, 3);
 			/* Channel A EQ - Hi */
-			snd_caiaq_input_report_abs(dev, KONTROLS4_ABS(27), buf, 4);
+			snd_caiaq_input_report_abs(cdev, KONTROLS4_ABS(27), buf, 4);
 			/* Channel C EQ - Filter */
-			snd_caiaq_input_report_abs(dev, KONTROLS4_ABS(28), buf, 5);
+			snd_caiaq_input_report_abs(cdev, KONTROLS4_ABS(28), buf, 5);
 			/* Channel C EQ - Low */
-			snd_caiaq_input_report_abs(dev, KONTROLS4_ABS(29), buf, 6);
+			snd_caiaq_input_report_abs(cdev, KONTROLS4_ABS(29), buf, 6);
 			/* Channel C EQ - Mid */
-			snd_caiaq_input_report_abs(dev, KONTROLS4_ABS(30), buf, 7);
+			snd_caiaq_input_report_abs(cdev, KONTROLS4_ABS(30), buf, 7);
 
 			break;
 
 		case 7:
 			/* Channel C EQ - Hi */
-			snd_caiaq_input_report_abs(dev, KONTROLS4_ABS(31), buf, 1);
+			snd_caiaq_input_report_abs(cdev, KONTROLS4_ABS(31), buf, 1);
 			/* FX1 - wet/dry */
-			snd_caiaq_input_report_abs(dev, KONTROLS4_ABS(32), buf, 2);
+			snd_caiaq_input_report_abs(cdev, KONTROLS4_ABS(32), buf, 2);
 			/* FX1 - 1 */
-			snd_caiaq_input_report_abs(dev, KONTROLS4_ABS(33), buf, 3);
+			snd_caiaq_input_report_abs(cdev, KONTROLS4_ABS(33), buf, 3);
 			/* FX1 - 2 */
-			snd_caiaq_input_report_abs(dev, KONTROLS4_ABS(34), buf, 4);
+			snd_caiaq_input_report_abs(cdev, KONTROLS4_ABS(34), buf, 4);
 			/* FX1 - 3 */
-			snd_caiaq_input_report_abs(dev, KONTROLS4_ABS(35), buf, 5);
+			snd_caiaq_input_report_abs(cdev, KONTROLS4_ABS(35), buf, 5);
 
 			break;
 
@@ -475,12 +475,12 @@ static void snd_usb_caiaq_tks4_dispatch(struct snd_usb_caiaqdev *dev,
 		buf += TKS4_MSGBLOCK_SIZE;
 	}
 
-	input_sync(dev->input_dev);
+	input_sync(cdev->input_dev);
 }
 
 #define MASCHINE_MSGBLOCK_SIZE 2
 
-static void snd_usb_caiaq_maschine_dispatch(struct snd_usb_caiaqdev *dev,
+static void snd_usb_caiaq_maschine_dispatch(struct snd_usb_caiaqdev *cdev,
 					const unsigned char *buf,
 					unsigned int len)
 {
@@ -491,65 +491,65 @@ static void snd_usb_caiaq_maschine_dispatch(struct snd_usb_caiaqdev *dev,
 		pressure = be16_to_cpu(buf[i * 2] << 8 | buf[(i * 2) + 1]);
 		pad_id = pressure >> 12;
 
-		input_report_abs(dev->input_dev, MASCHINE_PAD(pad_id), pressure & 0xfff);
+		input_report_abs(cdev->input_dev, MASCHINE_PAD(pad_id), pressure & 0xfff);
 	}
 
-	input_sync(dev->input_dev);
+	input_sync(cdev->input_dev);
 }
 
 static void snd_usb_caiaq_ep4_reply_dispatch(struct urb *urb)
 {
-	struct snd_usb_caiaqdev *dev = urb->context;
+	struct snd_usb_caiaqdev *cdev = urb->context;
 	unsigned char *buf = urb->transfer_buffer;
 	int ret;
 
-	if (urb->status || !dev || urb != dev->ep4_in_urb)
+	if (urb->status || !cdev || urb != cdev->ep4_in_urb)
 		return;
 
-	switch (dev->chip.usb_id) {
+	switch (cdev->chip.usb_id) {
 	case USB_ID(USB_VID_NATIVEINSTRUMENTS, USB_PID_TRAKTORKONTROLX1):
 		if (urb->actual_length < 24)
 			goto requeue;
 
 		if (buf[0] & 0x3)
-			snd_caiaq_input_read_io(dev, buf + 1, 7);
+			snd_caiaq_input_read_io(cdev, buf + 1, 7);
 
 		if (buf[0] & 0x4)
-			snd_caiaq_input_read_analog(dev, buf + 8, 16);
+			snd_caiaq_input_read_analog(cdev, buf + 8, 16);
 
 		break;
 
 	case USB_ID(USB_VID_NATIVEINSTRUMENTS, USB_PID_TRAKTORKONTROLS4):
-		snd_usb_caiaq_tks4_dispatch(dev, buf, urb->actual_length);
+		snd_usb_caiaq_tks4_dispatch(cdev, buf, urb->actual_length);
 		break;
 
 	case USB_ID(USB_VID_NATIVEINSTRUMENTS, USB_PID_MASCHINECONTROLLER):
 		if (urb->actual_length < (MASCHINE_PADS * MASCHINE_MSGBLOCK_SIZE))
 			goto requeue;
 
-		snd_usb_caiaq_maschine_dispatch(dev, buf, urb->actual_length);
+		snd_usb_caiaq_maschine_dispatch(cdev, buf, urb->actual_length);
 		break;
 	}
 
 requeue:
-	dev->ep4_in_urb->actual_length = 0;
-	ret = usb_submit_urb(dev->ep4_in_urb, GFP_ATOMIC);
+	cdev->ep4_in_urb->actual_length = 0;
+	ret = usb_submit_urb(cdev->ep4_in_urb, GFP_ATOMIC);
 	if (ret < 0)
 		log("unable to submit urb. OOM!?\n");
 }
 
 static int snd_usb_caiaq_input_open(struct input_dev *idev)
 {
-	struct snd_usb_caiaqdev *dev = input_get_drvdata(idev);
+	struct snd_usb_caiaqdev *cdev = input_get_drvdata(idev);
 
-	if (!dev)
+	if (!cdev)
 		return -EINVAL;
 
-	switch (dev->chip.usb_id) {
+	switch (cdev->chip.usb_id) {
 	case USB_ID(USB_VID_NATIVEINSTRUMENTS, USB_PID_TRAKTORKONTROLX1):
 	case USB_ID(USB_VID_NATIVEINSTRUMENTS, USB_PID_TRAKTORKONTROLS4):
 	case USB_ID(USB_VID_NATIVEINSTRUMENTS, USB_PID_MASCHINECONTROLLER):
-		if (usb_submit_urb(dev->ep4_in_urb, GFP_KERNEL) != 0)
+		if (usb_submit_urb(cdev->ep4_in_urb, GFP_KERNEL) != 0)
 			return -EIO;
 		break;
 	}
@@ -559,43 +559,43 @@ static int snd_usb_caiaq_input_open(struct input_dev *idev)
 
 static void snd_usb_caiaq_input_close(struct input_dev *idev)
 {
-	struct snd_usb_caiaqdev *dev = input_get_drvdata(idev);
+	struct snd_usb_caiaqdev *cdev = input_get_drvdata(idev);
 
-	if (!dev)
+	if (!cdev)
 		return;
 
-	switch (dev->chip.usb_id) {
+	switch (cdev->chip.usb_id) {
 	case USB_ID(USB_VID_NATIVEINSTRUMENTS, USB_PID_TRAKTORKONTROLX1):
 	case USB_ID(USB_VID_NATIVEINSTRUMENTS, USB_PID_TRAKTORKONTROLS4):
 	case USB_ID(USB_VID_NATIVEINSTRUMENTS, USB_PID_MASCHINECONTROLLER):
-		usb_kill_urb(dev->ep4_in_urb);
+		usb_kill_urb(cdev->ep4_in_urb);
 		break;
 	}
 }
 
-void snd_usb_caiaq_input_dispatch(struct snd_usb_caiaqdev *dev,
+void snd_usb_caiaq_input_dispatch(struct snd_usb_caiaqdev *cdev,
 				  char *buf,
 				  unsigned int len)
 {
-	if (!dev->input_dev || len < 1)
+	if (!cdev->input_dev || len < 1)
 		return;
 
 	switch (buf[0]) {
 	case EP1_CMD_READ_ANALOG:
-		snd_caiaq_input_read_analog(dev, buf + 1, len - 1);
+		snd_caiaq_input_read_analog(cdev, buf + 1, len - 1);
 		break;
 	case EP1_CMD_READ_ERP:
-		snd_caiaq_input_read_erp(dev, buf + 1, len - 1);
+		snd_caiaq_input_read_erp(cdev, buf + 1, len - 1);
 		break;
 	case EP1_CMD_READ_IO:
-		snd_caiaq_input_read_io(dev, buf + 1, len - 1);
+		snd_caiaq_input_read_io(cdev, buf + 1, len - 1);
 		break;
 	}
 }
 
-int snd_usb_caiaq_input_init(struct snd_usb_caiaqdev *dev)
+int snd_usb_caiaq_input_init(struct snd_usb_caiaqdev *cdev)
 {
-	struct usb_device *usb_dev = dev->chip.dev;
+	struct usb_device *usb_dev = cdev->chip.dev;
 	struct input_dev *input;
 	int i, ret = 0;
 
@@ -603,49 +603,49 @@ int snd_usb_caiaq_input_init(struct snd_usb_caiaqdev *dev)
 	if (!input)
 		return -ENOMEM;
 
-	usb_make_path(usb_dev, dev->phys, sizeof(dev->phys));
-	strlcat(dev->phys, "/input0", sizeof(dev->phys));
+	usb_make_path(usb_dev, cdev->phys, sizeof(cdev->phys));
+	strlcat(cdev->phys, "/input0", sizeof(cdev->phys));
 
-	input->name = dev->product_name;
-	input->phys = dev->phys;
+	input->name = cdev->product_name;
+	input->phys = cdev->phys;
 	usb_to_input_id(usb_dev, &input->id);
 	input->dev.parent = &usb_dev->dev;
 
-	input_set_drvdata(input, dev);
+	input_set_drvdata(input, cdev);
 
-	switch (dev->chip.usb_id) {
+	switch (cdev->chip.usb_id) {
 	case USB_ID(USB_VID_NATIVEINSTRUMENTS, USB_PID_RIGKONTROL2):
 		input->evbit[0] = BIT_MASK(EV_KEY) | BIT_MASK(EV_ABS);
 		input->absbit[0] = BIT_MASK(ABS_X) | BIT_MASK(ABS_Y) |
 			BIT_MASK(ABS_Z);
-		BUILD_BUG_ON(sizeof(dev->keycode) < sizeof(keycode_rk2));
-		memcpy(dev->keycode, keycode_rk2, sizeof(keycode_rk2));
+		BUILD_BUG_ON(sizeof(cdev->keycode) < sizeof(keycode_rk2));
+		memcpy(cdev->keycode, keycode_rk2, sizeof(keycode_rk2));
 		input->keycodemax = ARRAY_SIZE(keycode_rk2);
 		input_set_abs_params(input, ABS_X, 0, 4096, 0, 10);
 		input_set_abs_params(input, ABS_Y, 0, 4096, 0, 10);
 		input_set_abs_params(input, ABS_Z, 0, 4096, 0, 10);
-		snd_usb_caiaq_set_auto_msg(dev, 1, 10, 0);
+		snd_usb_caiaq_set_auto_msg(cdev, 1, 10, 0);
 		break;
 	case USB_ID(USB_VID_NATIVEINSTRUMENTS, USB_PID_RIGKONTROL3):
 		input->evbit[0] = BIT_MASK(EV_KEY) | BIT_MASK(EV_ABS);
 		input->absbit[0] = BIT_MASK(ABS_X) | BIT_MASK(ABS_Y) |
 			BIT_MASK(ABS_Z);
-		BUILD_BUG_ON(sizeof(dev->keycode) < sizeof(keycode_rk3));
-		memcpy(dev->keycode, keycode_rk3, sizeof(keycode_rk3));
+		BUILD_BUG_ON(sizeof(cdev->keycode) < sizeof(keycode_rk3));
+		memcpy(cdev->keycode, keycode_rk3, sizeof(keycode_rk3));
 		input->keycodemax = ARRAY_SIZE(keycode_rk3);
 		input_set_abs_params(input, ABS_X, 0, 1024, 0, 10);
 		input_set_abs_params(input, ABS_Y, 0, 1024, 0, 10);
 		input_set_abs_params(input, ABS_Z, 0, 1024, 0, 10);
-		snd_usb_caiaq_set_auto_msg(dev, 1, 10, 0);
+		snd_usb_caiaq_set_auto_msg(cdev, 1, 10, 0);
 		break;
 	case USB_ID(USB_VID_NATIVEINSTRUMENTS, USB_PID_AK1):
 		input->evbit[0] = BIT_MASK(EV_KEY) | BIT_MASK(EV_ABS);
 		input->absbit[0] = BIT_MASK(ABS_X);
-		BUILD_BUG_ON(sizeof(dev->keycode) < sizeof(keycode_ak1));
-		memcpy(dev->keycode, keycode_ak1, sizeof(keycode_ak1));
+		BUILD_BUG_ON(sizeof(cdev->keycode) < sizeof(keycode_ak1));
+		memcpy(cdev->keycode, keycode_ak1, sizeof(keycode_ak1));
 		input->keycodemax = ARRAY_SIZE(keycode_ak1);
 		input_set_abs_params(input, ABS_X, 0, 999, 0, 10);
-		snd_usb_caiaq_set_auto_msg(dev, 1, 0, 5);
+		snd_usb_caiaq_set_auto_msg(cdev, 1, 0, 5);
 		break;
 	case USB_ID(USB_VID_NATIVEINSTRUMENTS, USB_PID_KORECONTROLLER):
 	case USB_ID(USB_VID_NATIVEINSTRUMENTS, USB_PID_KORECONTROLLER2):
@@ -657,8 +657,8 @@ int snd_usb_caiaq_input_init(struct snd_usb_caiaqdev *dev)
 				   BIT_MASK(ABS_X) | BIT_MASK(ABS_Y) |
 				   BIT_MASK(ABS_Z);
 		input->absbit[BIT_WORD(ABS_MISC)] |= BIT_MASK(ABS_MISC);
-		BUILD_BUG_ON(sizeof(dev->keycode) < sizeof(keycode_kore));
-		memcpy(dev->keycode, keycode_kore, sizeof(keycode_kore));
+		BUILD_BUG_ON(sizeof(cdev->keycode) < sizeof(keycode_kore));
+		memcpy(cdev->keycode, keycode_kore, sizeof(keycode_kore));
 		input->keycodemax = ARRAY_SIZE(keycode_kore);
 		input_set_abs_params(input, ABS_HAT0X, 0, 999, 0, 10);
 		input_set_abs_params(input, ABS_HAT0Y, 0, 999, 0, 10);
@@ -672,7 +672,7 @@ int snd_usb_caiaq_input_init(struct snd_usb_caiaqdev *dev)
 		input_set_abs_params(input, ABS_Y, 0, 4096, 0, 10);
 		input_set_abs_params(input, ABS_Z, 0, 4096, 0, 10);
 		input_set_abs_params(input, ABS_MISC, 0, 255, 0, 1);
-		snd_usb_caiaq_set_auto_msg(dev, 1, 10, 5);
+		snd_usb_caiaq_set_auto_msg(cdev, 1, 10, 5);
 		break;
 	case USB_ID(USB_VID_NATIVEINSTRUMENTS, USB_PID_TRAKTORKONTROLX1):
 		input->evbit[0] = BIT_MASK(EV_KEY) | BIT_MASK(EV_ABS);
@@ -683,9 +683,9 @@ int snd_usb_caiaq_input_init(struct snd_usb_caiaqdev *dev)
 				   BIT_MASK(ABS_X) | BIT_MASK(ABS_Y) |
 				   BIT_MASK(ABS_Z);
 		input->absbit[BIT_WORD(ABS_MISC)] |= BIT_MASK(ABS_MISC);
-		BUILD_BUG_ON(sizeof(dev->keycode) < KONTROLX1_INPUTS);
+		BUILD_BUG_ON(sizeof(cdev->keycode) < KONTROLX1_INPUTS);
 		for (i = 0; i < KONTROLX1_INPUTS; i++)
-			dev->keycode[i] = BTN_MISC + i;
+			cdev->keycode[i] = BTN_MISC + i;
 		input->keycodemax = KONTROLX1_INPUTS;
 
 		/* analog potentiometers */
@@ -704,26 +704,26 @@ int snd_usb_caiaq_input_init(struct snd_usb_caiaqdev *dev)
 		input_set_abs_params(input, ABS_Z, 0, 0xf, 0, 1);
 		input_set_abs_params(input, ABS_MISC, 0, 0xf, 0, 1);
 
-		dev->ep4_in_urb = usb_alloc_urb(0, GFP_KERNEL);
-		if (!dev->ep4_in_urb) {
+		cdev->ep4_in_urb = usb_alloc_urb(0, GFP_KERNEL);
+		if (!cdev->ep4_in_urb) {
 			ret = -ENOMEM;
 			goto exit_free_idev;
 		}
 
-		usb_fill_bulk_urb(dev->ep4_in_urb, usb_dev,
+		usb_fill_bulk_urb(cdev->ep4_in_urb, usb_dev,
 				  usb_rcvbulkpipe(usb_dev, 0x4),
-				  dev->ep4_in_buf, EP4_BUFSIZE,
-				  snd_usb_caiaq_ep4_reply_dispatch, dev);
+				  cdev->ep4_in_buf, EP4_BUFSIZE,
+				  snd_usb_caiaq_ep4_reply_dispatch, cdev);
 
-		snd_usb_caiaq_set_auto_msg(dev, 1, 10, 5);
+		snd_usb_caiaq_set_auto_msg(cdev, 1, 10, 5);
 
 		break;
 
 	case USB_ID(USB_VID_NATIVEINSTRUMENTS, USB_PID_TRAKTORKONTROLS4):
 		input->evbit[0] = BIT_MASK(EV_KEY) | BIT_MASK(EV_ABS);
-		BUILD_BUG_ON(sizeof(dev->keycode) < KONTROLS4_BUTTONS);
+		BUILD_BUG_ON(sizeof(cdev->keycode) < KONTROLS4_BUTTONS);
 		for (i = 0; i < KONTROLS4_BUTTONS; i++)
-			dev->keycode[i] = KONTROLS4_BUTTON(i);
+			cdev->keycode[i] = KONTROLS4_BUTTON(i);
 		input->keycodemax = KONTROLS4_BUTTONS;
 
 		for (i = 0; i < KONTROLS4_AXIS; i++) {
@@ -743,18 +743,18 @@ int snd_usb_caiaq_input_init(struct snd_usb_caiaqdev *dev)
 		for (i = 0; i < 9; i++)
 			input_set_abs_params(input, KONTROLS4_ABS(38+i), 0, 0xf, 0, 1);
 
-		dev->ep4_in_urb = usb_alloc_urb(0, GFP_KERNEL);
-		if (!dev->ep4_in_urb) {
+		cdev->ep4_in_urb = usb_alloc_urb(0, GFP_KERNEL);
+		if (!cdev->ep4_in_urb) {
 			ret = -ENOMEM;
 			goto exit_free_idev;
 		}
 
-		usb_fill_bulk_urb(dev->ep4_in_urb, usb_dev,
+		usb_fill_bulk_urb(cdev->ep4_in_urb, usb_dev,
 				  usb_rcvbulkpipe(usb_dev, 0x4),
-				  dev->ep4_in_buf, EP4_BUFSIZE,
-				  snd_usb_caiaq_ep4_reply_dispatch, dev);
+				  cdev->ep4_in_buf, EP4_BUFSIZE,
+				  snd_usb_caiaq_ep4_reply_dispatch, cdev);
 
-		snd_usb_caiaq_set_auto_msg(dev, 1, 10, 5);
+		snd_usb_caiaq_set_auto_msg(cdev, 1, 10, 5);
 
 		break;
 
@@ -767,8 +767,8 @@ int snd_usb_caiaq_input_init(struct snd_usb_caiaqdev *dev)
 			BIT_MASK(ABS_RX) | BIT_MASK(ABS_RY) |
 			BIT_MASK(ABS_RZ);
 
-		BUILD_BUG_ON(sizeof(dev->keycode) < sizeof(keycode_maschine));
-		memcpy(dev->keycode, keycode_maschine, sizeof(keycode_maschine));
+		BUILD_BUG_ON(sizeof(cdev->keycode) < sizeof(keycode_maschine));
+		memcpy(cdev->keycode, keycode_maschine, sizeof(keycode_maschine));
 		input->keycodemax = ARRAY_SIZE(keycode_maschine);
 
 		for (i = 0; i < MASCHINE_PADS; i++) {
@@ -788,18 +788,18 @@ int snd_usb_caiaq_input_init(struct snd_usb_caiaqdev *dev)
 		input_set_abs_params(input, ABS_RY, 0, 999, 0, 10);
 		input_set_abs_params(input, ABS_RZ, 0, 999, 0, 10);
 
-		dev->ep4_in_urb = usb_alloc_urb(0, GFP_KERNEL);
-		if (!dev->ep4_in_urb) {
+		cdev->ep4_in_urb = usb_alloc_urb(0, GFP_KERNEL);
+		if (!cdev->ep4_in_urb) {
 			ret = -ENOMEM;
 			goto exit_free_idev;
 		}
 
-		usb_fill_bulk_urb(dev->ep4_in_urb, usb_dev,
+		usb_fill_bulk_urb(cdev->ep4_in_urb, usb_dev,
 				  usb_rcvbulkpipe(usb_dev, 0x4),
-				  dev->ep4_in_buf, EP4_BUFSIZE,
-				  snd_usb_caiaq_ep4_reply_dispatch, dev);
+				  cdev->ep4_in_buf, EP4_BUFSIZE,
+				  snd_usb_caiaq_ep4_reply_dispatch, cdev);
 
-		snd_usb_caiaq_set_auto_msg(dev, 1, 10, 5);
+		snd_usb_caiaq_set_auto_msg(cdev, 1, 10, 5);
 		break;
 
 	default:
@@ -809,12 +809,12 @@ int snd_usb_caiaq_input_init(struct snd_usb_caiaqdev *dev)
 
 	input->open = snd_usb_caiaq_input_open;
 	input->close = snd_usb_caiaq_input_close;
-	input->keycode = dev->keycode;
+	input->keycode = cdev->keycode;
 	input->keycodesize = sizeof(unsigned short);
 	for (i = 0; i < input->keycodemax; i++)
-		__set_bit(dev->keycode[i], input->keybit);
+		__set_bit(cdev->keycode[i], input->keybit);
 
-	dev->input_dev = input;
+	cdev->input_dev = input;
 
 	ret = input_register_device(input);
 	if (ret < 0)
@@ -824,19 +824,19 @@ int snd_usb_caiaq_input_init(struct snd_usb_caiaqdev *dev)
 
 exit_free_idev:
 	input_free_device(input);
-	dev->input_dev = NULL;
+	cdev->input_dev = NULL;
 	return ret;
 }
 
-void snd_usb_caiaq_input_free(struct snd_usb_caiaqdev *dev)
+void snd_usb_caiaq_input_free(struct snd_usb_caiaqdev *cdev)
 {
-	if (!dev || !dev->input_dev)
+	if (!cdev || !cdev->input_dev)
 		return;
 
-	usb_kill_urb(dev->ep4_in_urb);
-	usb_free_urb(dev->ep4_in_urb);
-	dev->ep4_in_urb = NULL;
+	usb_kill_urb(cdev->ep4_in_urb);
+	usb_free_urb(cdev->ep4_in_urb);
+	cdev->ep4_in_urb = NULL;
 
-	input_unregister_device(dev->input_dev);
-	dev->input_dev = NULL;
+	input_unregister_device(cdev->input_dev);
+	cdev->input_dev = NULL;
 }
diff --git a/sound/usb/caiaq/input.h b/sound/usb/caiaq/input.h
index ced5355..6014e27 100644
--- a/sound/usb/caiaq/input.h
+++ b/sound/usb/caiaq/input.h
@@ -1,8 +1,8 @@
 #ifndef CAIAQ_INPUT_H
 #define CAIAQ_INPUT_H
 
-void snd_usb_caiaq_input_dispatch(struct snd_usb_caiaqdev *dev, char *buf, unsigned int len);
-int snd_usb_caiaq_input_init(struct snd_usb_caiaqdev *dev);
-void snd_usb_caiaq_input_free(struct snd_usb_caiaqdev *dev);
+void snd_usb_caiaq_input_dispatch(struct snd_usb_caiaqdev *cdev, char *buf, unsigned int len);
+int snd_usb_caiaq_input_init(struct snd_usb_caiaqdev *cdev);
+void snd_usb_caiaq_input_free(struct snd_usb_caiaqdev *cdev);
 
 #endif
diff --git a/sound/usb/caiaq/midi.c b/sound/usb/caiaq/midi.c
index a1a47088..63c5a2c 100644
--- a/sound/usb/caiaq/midi.c
+++ b/sound/usb/caiaq/midi.c
@@ -37,12 +37,12 @@ static int snd_usb_caiaq_midi_input_close(struct snd_rawmidi_substream *substrea
 
 static void snd_usb_caiaq_midi_input_trigger(struct snd_rawmidi_substream *substream, int up)
 {
-	struct snd_usb_caiaqdev *dev = substream->rmidi->private_data;
+	struct snd_usb_caiaqdev *cdev = substream->rmidi->private_data;
 
-	if (!dev)
+	if (!cdev)
 		return;
 
-	dev->midi_receive_substream = up ? substream : NULL;
+	cdev->midi_receive_substream = up ? substream : NULL;
 }
 
 
@@ -53,49 +53,49 @@ static int snd_usb_caiaq_midi_output_open(struct snd_rawmidi_substream *substrea
 
 static int snd_usb_caiaq_midi_output_close(struct snd_rawmidi_substream *substream)
 {
-	struct snd_usb_caiaqdev *dev = substream->rmidi->private_data;
-	if (dev->midi_out_active) {
-		usb_kill_urb(&dev->midi_out_urb);
-		dev->midi_out_active = 0;
+	struct snd_usb_caiaqdev *cdev = substream->rmidi->private_data;
+	if (cdev->midi_out_active) {
+		usb_kill_urb(&cdev->midi_out_urb);
+		cdev->midi_out_active = 0;
 	}
 	return 0;
 }
 
-static void snd_usb_caiaq_midi_send(struct snd_usb_caiaqdev *dev,
+static void snd_usb_caiaq_midi_send(struct snd_usb_caiaqdev *cdev,
 				    struct snd_rawmidi_substream *substream)
 {
 	int len, ret;
 
-	dev->midi_out_buf[0] = EP1_CMD_MIDI_WRITE;
-	dev->midi_out_buf[1] = 0; /* port */
-	len = snd_rawmidi_transmit(substream, dev->midi_out_buf + 3,
+	cdev->midi_out_buf[0] = EP1_CMD_MIDI_WRITE;
+	cdev->midi_out_buf[1] = 0; /* port */
+	len = snd_rawmidi_transmit(substream, cdev->midi_out_buf + 3,
 				   EP1_BUFSIZE - 3);
 
 	if (len <= 0)
 		return;
 
-	dev->midi_out_buf[2] = len;
-	dev->midi_out_urb.transfer_buffer_length = len+3;
+	cdev->midi_out_buf[2] = len;
+	cdev->midi_out_urb.transfer_buffer_length = len+3;
 
-	ret = usb_submit_urb(&dev->midi_out_urb, GFP_ATOMIC);
+	ret = usb_submit_urb(&cdev->midi_out_urb, GFP_ATOMIC);
 	if (ret < 0)
 		log("snd_usb_caiaq_midi_send(%p): usb_submit_urb() failed,"
 		    "ret=%d, len=%d\n",
 		    substream, ret, len);
 	else
-		dev->midi_out_active = 1;
+		cdev->midi_out_active = 1;
 }
 
 static void snd_usb_caiaq_midi_output_trigger(struct snd_rawmidi_substream *substream, int up)
 {
-	struct snd_usb_caiaqdev *dev = substream->rmidi->private_data;
+	struct snd_usb_caiaqdev *cdev = substream->rmidi->private_data;
 
 	if (up) {
-		dev->midi_out_substream = substream;
-		if (!dev->midi_out_active)
-			snd_usb_caiaq_midi_send(dev, substream);
+		cdev->midi_out_substream = substream;
+		if (!cdev->midi_out_active)
+			snd_usb_caiaq_midi_send(cdev, substream);
 	} else {
-		dev->midi_out_substream = NULL;
+		cdev->midi_out_substream = NULL;
 	}
 }
 
@@ -114,13 +114,13 @@ static struct snd_rawmidi_ops snd_usb_caiaq_midi_input =
 	.trigger =      snd_usb_caiaq_midi_input_trigger,
 };
 
-void snd_usb_caiaq_midi_handle_input(struct snd_usb_caiaqdev *dev,
+void snd_usb_caiaq_midi_handle_input(struct snd_usb_caiaqdev *cdev,
 				     int port, const char *buf, int len)
 {
-	if (!dev->midi_receive_substream)
+	if (!cdev->midi_receive_substream)
 		return;
 
-	snd_rawmidi_receive(dev->midi_receive_substream, buf, len);
+	snd_rawmidi_receive(cdev->midi_receive_substream, buf, len);
 }
 
 int snd_usb_caiaq_midi_init(struct snd_usb_caiaqdev *device)
@@ -160,15 +160,15 @@ int snd_usb_caiaq_midi_init(struct snd_usb_caiaqdev *device)
 
 void snd_usb_caiaq_midi_output_done(struct urb* urb)
 {
-	struct snd_usb_caiaqdev *dev = urb->context;
+	struct snd_usb_caiaqdev *cdev = urb->context;
 
-	dev->midi_out_active = 0;
+	cdev->midi_out_active = 0;
 	if (urb->status != 0)
 		return;
 
-	if (!dev->midi_out_substream)
+	if (!cdev->midi_out_substream)
 		return;
 
-	snd_usb_caiaq_midi_send(dev, dev->midi_out_substream);
+	snd_usb_caiaq_midi_send(cdev, cdev->midi_out_substream);
 }
 
diff --git a/sound/usb/caiaq/midi.h b/sound/usb/caiaq/midi.h
index 380f984..60bf344 100644
--- a/sound/usb/caiaq/midi.h
+++ b/sound/usb/caiaq/midi.h
@@ -1,8 +1,9 @@
 #ifndef CAIAQ_MIDI_H
 #define CAIAQ_MIDI_H
 
-int snd_usb_caiaq_midi_init(struct snd_usb_caiaqdev *dev);
-void snd_usb_caiaq_midi_handle_input(struct snd_usb_caiaqdev *dev, int port, const char *buf, int len);
+int snd_usb_caiaq_midi_init(struct snd_usb_caiaqdev *cdev);
+void snd_usb_caiaq_midi_handle_input(struct snd_usb_caiaqdev *cdev,
+				     int port, const char *buf, int len);
 void snd_usb_caiaq_midi_output_done(struct urb *urb);
 
 #endif /* CAIAQ_MIDI_H */