5 files changed, 126 insertions, 110 deletions

diff --git a/sound/usb/caiaq/audio.c b/sound/usb/caiaq/audio.c
index b13ce767ac72..b14451342166 100644
--- a/sound/usb/caiaq/audio.c
+++ b/sound/usb/caiaq/audio.c
@@ -42,10 +42,10 @@
         (stream << 1) | (~(i / (dev->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 | 
+        .info           = (SNDRV_PCM_INFO_MMAP | SNDRV_PCM_INFO_INTERLEAVED |
                            SNDRV_PCM_INFO_BLOCK_TRANSFER),
         .formats        = SNDRV_PCM_FMTBIT_S24_3BE,
-        .rates          = (SNDRV_PCM_RATE_44100 | SNDRV_PCM_RATE_48000 | 
+        .rates          = (SNDRV_PCM_RATE_44100 | SNDRV_PCM_RATE_48000 |
                            SNDRV_PCM_RATE_96000),
         .rate_min       = 44100,
         .rate_max       = 0, /* will overwrite later */
@@ -68,7 +68,7 @@ activate_substream(struct snd_usb_caiaqdev *dev,
                 dev->sub_capture[sub->number] = sub;
 }
 
-static void 
+static void
 deactivate_substream(struct snd_usb_caiaqdev *dev,
                      struct snd_pcm_substream *sub)
 {
@@ -118,7 +118,7 @@ static int stream_start(struct snd_usb_caiaqdev *dev)
                         return -EPIPE;
                 }
         }
-        
+
         return 0;
 }
 
@@ -129,7 +129,7 @@ static void stream_stop(struct snd_usb_caiaqdev *dev)
         debug("%s(%p)\n", __func__, dev);
         if (!dev->streaming)
                 return;
-        
+
         dev->streaming = 0;
 
         for (i = 0; i < N_URBS; i++) {
@@ -154,7 +154,7 @@ static int snd_usb_caiaq_substream_close(struct snd_pcm_substream *substream)
         debug("%s(%p)\n", __func__, substream);
         if (all_substreams_zero(dev->sub_playback) &&
             all_substreams_zero(dev->sub_capture)) {
-                /* when the last client has stopped streaming, 
+                /* when the last client has stopped streaming,
                  * all sample rates are allowed again */
                 stream_stop(dev);
                 dev->pcm_info.rates = dev->samplerates;
@@ -194,7 +194,7 @@ static int snd_usb_caiaq_pcm_prepare(struct snd_pcm_substream *substream)
         struct snd_pcm_runtime *runtime = substream->runtime;
 
         debug("%s(%p)\n", __func__, substream);
-        
+
         if (substream->stream == SNDRV_PCM_STREAM_PLAYBACK) {
                 dev->period_out_count[index] = BYTES_PER_SAMPLE + 1;
                 dev->audio_out_buf_pos[index] = BYTES_PER_SAMPLE + 1;
@@ -205,19 +205,19 @@ static int snd_usb_caiaq_pcm_prepare(struct snd_pcm_substream *substream)
 
         if (dev->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;
-        
+
         snd_pcm_limit_hw_rates(runtime);
 
         bytes_per_sample = BYTES_PER_SAMPLE;
         if (dev->spec.data_alignment == 2)
                 bytes_per_sample++;
-        
+
         bpp = ((runtime->rate / 8000) + CLOCK_DRIFT_TOLERANCE)
                 * bytes_per_sample * CHANNELS_PER_STREAM * dev->n_streams;
 
@@ -232,7 +232,7 @@ static int snd_usb_caiaq_pcm_prepare(struct snd_pcm_substream *substream)
         ret = stream_start(dev);
         if (ret)
                 return ret;
-        
+
         dev->output_running = 0;
         wait_event_timeout(dev->prepare_wait_queue, dev->output_running, HZ);
         if (!dev->output_running) {
@@ -273,7 +273,7 @@ snd_usb_caiaq_pcm_pointer(struct snd_pcm_substream *sub)
                 return SNDRV_PCM_POS_XRUN;
 
         if (sub->stream == SNDRV_PCM_STREAM_PLAYBACK)
-                return bytes_to_frames(sub->runtime, 
+                return bytes_to_frames(sub->runtime,
                                         dev->audio_out_buf_pos[index]);
         else
                 return bytes_to_frames(sub->runtime,
@@ -291,7 +291,7 @@ static struct snd_pcm_ops snd_usb_caiaq_ops = {
         .trigger =      snd_usb_caiaq_pcm_trigger,
         .pointer =      snd_usb_caiaq_pcm_pointer
 };
-        
+
 static void check_for_elapsed_periods(struct snd_usb_caiaqdev *dev,
                                       struct snd_pcm_substream **subs)
 {
@@ -333,7 +333,7 @@ static void read_in_urb_mode0(struct snd_usb_caiaqdev *dev,
                                 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[dev->audio_in_buf_pos[stream]++]
                                         = usb_buf[i];
                                 dev->period_in_count[stream]++;
                                 if (dev->audio_in_buf_pos[stream] == sz)
@@ -354,14 +354,14 @@ static void read_in_urb_mode2(struct snd_usb_caiaqdev *dev,
 
         for (i = 0; i < iso->actual_length;) {
                 if (i % (dev->n_streams * BYTES_PER_SAMPLE_USB) == 0) {
-                        for (stream = 0; 
-                             stream < dev->n_streams; 
+                        for (stream = 0;
+                             stream < dev->n_streams;
                              stream++, i++) {
                                 if (dev->first_packet)
                                         continue;
 
                                 check_byte = MAKE_CHECKBYTE(dev, stream, i);
-                                
+
                                 if ((usb_buf[i] & 0x3f) != check_byte)
                                         dev->input_panic = 1;
 
@@ -410,21 +410,21 @@ static void read_in_urb(struct snd_usb_caiaqdev *dev,
         }
 
         if ((dev->input_panic || dev->output_panic) && !dev->warned) {
-                debug("streaming error detected %s %s\n", 
+                debug("streaming error detected %s %s\n",
                                 dev->input_panic ? "(input)" : "",
                                 dev->output_panic ? "(output)" : "");
                 dev->warned = 1;
         }
 }
 
-static void fill_out_urb(struct snd_usb_caiaqdev *dev, 
-                         struct urb *urb, 
+static void fill_out_urb(struct snd_usb_caiaqdev *dev,
+                         struct urb *urb,
                          const struct usb_iso_packet_descriptor *iso)
 {
         unsigned char *usb_buf = urb->transfer_buffer + iso->offset;
         struct snd_pcm_substream *sub;
         int stream, i;
-        
+
         for (i = 0; i < iso->length;) {
                 for (stream = 0; stream < dev->n_streams; stream++, i++) {
                         sub = dev->sub_playback[stream];
@@ -444,7 +444,7 @@ static void fill_out_urb(struct snd_usb_caiaqdev *dev,
 
                 /* fill in the check bytes */
                 if (dev->spec.data_alignment == 2 &&
-                    i % (dev->n_streams * BYTES_PER_SAMPLE_USB) == 
+                    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);
@@ -453,7 +453,7 @@ static 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_caiaq_cb_info *info = urb->context;
         struct snd_usb_caiaqdev *dev;
         struct urb *out;
         int frame, len, send_it = 0, outframe = 0;
@@ -478,7 +478,7 @@ static void read_completed(struct urb *urb)
                 out->iso_frame_desc[outframe].length = len;
                 out->iso_frame_desc[outframe].actual_length = 0;
                 out->iso_frame_desc[outframe].offset = BYTES_PER_FRAME * frame;
-                
+
                 if (len > 0) {
                         spin_lock(&dev->spinlock);
                         fill_out_urb(dev, out, &out->iso_frame_desc[outframe]);
@@ -497,14 +497,14 @@ static void read_completed(struct urb *urb)
                 out->transfer_flags = URB_ISO_ASAP;
                 usb_submit_urb(out, GFP_ATOMIC);
         }
-        
+
         /* re-submit inbound urb */
         for (frame = 0; frame < FRAMES_PER_URB; frame++) {
                 urb->iso_frame_desc[frame].offset = BYTES_PER_FRAME * frame;
                 urb->iso_frame_desc[frame].length = BYTES_PER_FRAME;
                 urb->iso_frame_desc[frame].actual_length = 0;
         }
-        
+
         urb->number_of_packets = FRAMES_PER_URB;
         urb->transfer_flags = URB_ISO_ASAP;
         usb_submit_urb(urb, GFP_ATOMIC);
@@ -528,7 +528,7 @@ static struct urb **alloc_urbs(struct snd_usb_caiaqdev *dev, int dir, int *ret)
         struct usb_device *usb_dev = dev->chip.dev;
         unsigned int pipe;
 
-        pipe = (dir == SNDRV_PCM_STREAM_PLAYBACK) ? 
+        pipe = (dir == SNDRV_PCM_STREAM_PLAYBACK) ?
                 usb_sndisocpipe(usb_dev, ENDPOINT_PLAYBACK) :
                 usb_rcvisocpipe(usb_dev, ENDPOINT_CAPTURE);
 
@@ -547,25 +547,25 @@ static struct urb **alloc_urbs(struct snd_usb_caiaqdev *dev, int dir, int *ret)
                         return urbs;
                 }
 
-                urbs[i]->transfer_buffer = 
+                urbs[i]->transfer_buffer =
                         kmalloc(FRAMES_PER_URB * BYTES_PER_FRAME, GFP_KERNEL);
                 if (!urbs[i]->transfer_buffer) {
                         log("unable to kmalloc() transfer buffer, OOM!?\n");
                         *ret = -ENOMEM;
                         return urbs;
                 }
-                
+
                 for (frame = 0; frame < FRAMES_PER_URB; frame++) {
-                        struct usb_iso_packet_descriptor *iso = 
+                        struct usb_iso_packet_descriptor *iso =
                                 &urbs[i]->iso_frame_desc[frame];
-                        
+
                         iso->offset = BYTES_PER_FRAME * frame;
                         iso->length = BYTES_PER_FRAME;
                 }
-                
+
                 urbs[i]->dev = usb_dev;
                 urbs[i]->pipe = pipe;
-                urbs[i]->transfer_buffer_length = FRAMES_PER_URB 
+                urbs[i]->transfer_buffer_length = FRAMES_PER_URB
                                                 * BYTES_PER_FRAME;
                 urbs[i]->context = &dev->data_cb_info[i];
                 urbs[i]->interval = 1;
@@ -589,7 +589,7 @@ static void free_urbs(struct urb **urbs)
         for (i = 0; i < N_URBS; i++) {
                 if (!urbs[i])
                         continue;
-                
+
                 usb_kill_urb(urbs[i]);
                 kfree(urbs[i]->transfer_buffer);
                 usb_free_urb(urbs[i]);
@@ -602,11 +602,11 @@ int snd_usb_caiaq_audio_init(struct snd_usb_caiaqdev *dev)
 {
         int i, ret;
 
-        dev->n_audio_in  = max(dev->spec.num_analog_audio_in, 
-                               dev->spec.num_digital_audio_in) / 
+        dev->n_audio_in  = max(dev->spec.num_analog_audio_in,
+                               dev->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) / 
+                               dev->spec.num_digital_audio_out) /
                                 CHANNELS_PER_STREAM;
         dev->n_streams = max(dev->n_audio_in, dev->n_audio_out);
 
@@ -619,7 +619,7 @@ int snd_usb_caiaq_audio_init(struct snd_usb_caiaqdev *dev)
                 return -EINVAL;
         }
 
-        ret = snd_pcm_new(dev->chip.card, dev->product_name, 0, 
+        ret = snd_pcm_new(dev->chip.card, dev->product_name, 0,
                         dev->n_audio_out, dev->n_audio_in, &dev->pcm);
 
         if (ret < 0) {
@@ -632,7 +632,7 @@ int snd_usb_caiaq_audio_init(struct snd_usb_caiaqdev *dev)
 
         memset(dev->sub_playback, 0, sizeof(dev->sub_playback));
         memset(dev->sub_capture, 0, sizeof(dev->sub_capture));
-        
+
         memcpy(&dev->pcm_info, &snd_usb_caiaq_pcm_hardware,
                         sizeof(snd_usb_caiaq_pcm_hardware));
 
@@ -651,9 +651,9 @@ int snd_usb_caiaq_audio_init(struct snd_usb_caiaqdev *dev)
                 break;
         }
 
-        snd_pcm_set_ops(dev->pcm, SNDRV_PCM_STREAM_PLAYBACK, 
+        snd_pcm_set_ops(dev->pcm, SNDRV_PCM_STREAM_PLAYBACK,
                                 &snd_usb_caiaq_ops);
-        snd_pcm_set_ops(dev->pcm, SNDRV_PCM_STREAM_CAPTURE, 
+        snd_pcm_set_ops(dev->pcm, SNDRV_PCM_STREAM_CAPTURE,
                                 &snd_usb_caiaq_ops);
 
         snd_pcm_lib_preallocate_pages_for_all(dev->pcm,
@@ -662,7 +662,7 @@ int snd_usb_caiaq_audio_init(struct snd_usb_caiaqdev *dev)
                                         MAX_BUFFER_SIZE, MAX_BUFFER_SIZE);
 
         dev->data_cb_info =
-                kmalloc(sizeof(struct snd_usb_caiaq_cb_info) * N_URBS, 
+                kmalloc(sizeof(struct snd_usb_caiaq_cb_info) * N_URBS,
                                         GFP_KERNEL);
 
         if (!dev->data_cb_info)
@@ -672,14 +672,14 @@ int snd_usb_caiaq_audio_init(struct snd_usb_caiaqdev *dev)
                 dev->data_cb_info[i].dev = dev;
                 dev->data_cb_info[i].index = i;
         }
-        
+
         dev->data_urbs_in = alloc_urbs(dev, SNDRV_PCM_STREAM_CAPTURE, &ret);
         if (ret < 0) {
                 kfree(dev->data_cb_info);
                 free_urbs(dev->data_urbs_in);
                 return ret;
         }
-        
+
         dev->data_urbs_out = alloc_urbs(dev, SNDRV_PCM_STREAM_PLAYBACK, &ret);
         if (ret < 0) {
                 kfree(dev->data_cb_info);
diff --git a/sound/usb/caiaq/device.c b/sound/usb/caiaq/device.c
index 515de1cd2a3e..22406245a98b 100644
--- a/sound/usb/caiaq/device.c
+++ b/sound/usb/caiaq/device.c
@@ -35,7 +35,7 @@
 #include "input.h"
 
 MODULE_AUTHOR("Daniel Mack <daniel@caiaq.de>");
-MODULE_DESCRIPTION("caiaq USB audio, version 1.3.14");
+MODULE_DESCRIPTION("caiaq USB audio, version 1.3.16");
 MODULE_LICENSE("GPL");
 MODULE_SUPPORTED_DEVICE("{{Native Instruments, RigKontrol2},"
                          "{Native Instruments, RigKontrol3},"
@@ -79,7 +79,7 @@ static struct usb_device_id snd_usb_id_table[] = {
         {
                 .match_flags =  USB_DEVICE_ID_MATCH_DEVICE,
                 .idVendor =     USB_VID_NATIVEINSTRUMENTS,
-                .idProduct =    USB_PID_RIGKONTROL2 
+                .idProduct =    USB_PID_RIGKONTROL2
         },
         {
                 .match_flags =  USB_DEVICE_ID_MATCH_DEVICE,
@@ -197,7 +197,7 @@ int snd_usb_caiaq_send_command(struct snd_usb_caiaqdev *dev,
 
         if (buffer && len > 0)
                 memcpy(dev->ep1_out_buf+1, buffer, len);
-        
+
         dev->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);
@@ -208,7 +208,7 @@ int snd_usb_caiaq_set_audio_params (struct snd_usb_caiaqdev *dev,
 {
         int ret;
         char tmp[5];
-        
+
         switch (rate) {
         case 44100:     tmp[0] = SAMPLERATE_44100;   break;
         case 48000:     tmp[0] = SAMPLERATE_48000;   break;
@@ -237,12 +237,12 @@ int snd_usb_caiaq_set_audio_params (struct snd_usb_caiaqdev *dev,
 
         if (ret)
                 return ret;
-        
-        if (!wait_event_timeout(dev->ep1_wait_queue, 
+
+        if (!wait_event_timeout(dev->ep1_wait_queue,
             dev->audio_parm_answer >= 0, HZ))
                 return -EPIPE;
-                
-        if (dev->audio_parm_answer != 1) 
+
+        if (dev->audio_parm_answer != 1)
                 debug("unable to set the device's audio params\n");
         else
                 dev->bpp = bpp;
@@ -250,8 +250,8 @@ int snd_usb_caiaq_set_audio_params (struct snd_usb_caiaqdev *dev,
         return dev->audio_parm_answer == 1 ? 0 : -EINVAL;
 }
 
-int snd_usb_caiaq_set_auto_msg (struct snd_usb_caiaqdev *dev, 
-                                int digital, int analog, int erp)
+int snd_usb_caiaq_set_auto_msg(struct snd_usb_caiaqdev *dev,
+                               int digital, int analog, int erp)
 {
         char tmp[3] = { digital, analog, erp };
         return snd_usb_caiaq_send_command(dev, EP1_CMD_AUTO_MSG,
@@ -262,7 +262,7 @@ static void __devinit setup_card(struct snd_usb_caiaqdev *dev)
 {
         int ret;
         char val[4];
-        
+
         /* device-specific startup specials */
         switch (dev->chip.usb_id) {
         case USB_ID(USB_VID_NATIVEINSTRUMENTS, USB_PID_RIGKONTROL2):
@@ -314,7 +314,7 @@ static void __devinit setup_card(struct snd_usb_caiaqdev *dev)
                         dev->control_state, 1);
                 break;
         }
-        
+
         if (dev->spec.num_analog_audio_out +
             dev->spec.num_analog_audio_in +
             dev->spec.num_digital_audio_out +
@@ -323,7 +323,7 @@ static void __devinit setup_card(struct snd_usb_caiaqdev *dev)
                 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);
@@ -363,7 +363,7 @@ static int create_card(struct usb_device* usb_dev, struct snd_card **cardp)
         if (devnum >= SNDRV_CARDS)
                 return -ENODEV;
 
-        err = snd_card_create(index[devnum], id[devnum], THIS_MODULE, 
+        err = snd_card_create(index[devnum], id[devnum], THIS_MODULE,
                               sizeof(struct snd_usb_caiaqdev), &card);
         if (err < 0)
                 return err;
@@ -382,11 +382,11 @@ static int create_card(struct usb_device* usb_dev, struct snd_card **cardp)
 
 static int __devinit init_card(struct snd_usb_caiaqdev *dev)
 {
-        char *c;
+        char *c, usbpath[32];
         struct usb_device *usb_dev = dev->chip.dev;
         struct snd_card *card = dev->chip.card;
         int err, len;
-        
+
         if (usb_set_interface(usb_dev, 0, 1) != 0) {
                 log("can't set alt interface.\n");
                 return -EIO;
@@ -395,19 +395,19 @@ static int __devinit init_card(struct snd_usb_caiaqdev *dev)
         usb_init_urb(&dev->ep1_in_urb);
         usb_init_urb(&dev->midi_out_urb);
 
-        usb_fill_bulk_urb(&dev->ep1_in_urb, usb_dev, 
+        usb_fill_bulk_urb(&dev->ep1_in_urb, usb_dev,
                           usb_rcvbulkpipe(usb_dev, 0x1),
-                          dev->ep1_in_buf, EP1_BUFSIZE, 
+                          dev->ep1_in_buf, EP1_BUFSIZE,
                           usb_ep1_command_reply_dispatch, dev);
 
-        usb_fill_bulk_urb(&dev->midi_out_urb, usb_dev, 
+        usb_fill_bulk_urb(&dev->midi_out_urb, usb_dev,
                           usb_sndbulkpipe(usb_dev, 0x1),
-                          dev->midi_out_buf, EP1_BUFSIZE, 
+                          dev->midi_out_buf, EP1_BUFSIZE,
                           snd_usb_caiaq_midi_output_done, dev);
-        
+
         init_waitqueue_head(&dev->ep1_wait_queue);
         init_waitqueue_head(&dev->prepare_wait_queue);
-        
+
         if (usb_submit_urb(&dev->ep1_in_urb, GFP_KERNEL) != 0)
                 return -EIO;
 
@@ -420,47 +420,52 @@ static int __devinit init_card(struct snd_usb_caiaqdev *dev)
 
         usb_string(usb_dev, usb_dev->descriptor.iManufacturer,
                    dev->vendor_name, CAIAQ_USB_STR_LEN);
-        
+
         usb_string(usb_dev, usb_dev->descriptor.iProduct,
                    dev->product_name, CAIAQ_USB_STR_LEN);
-        
-        usb_string(usb_dev, usb_dev->descriptor.iSerialNumber,
-                   dev->serial, CAIAQ_USB_STR_LEN);
-
-        /* terminate serial string at first white space occurence */
-        c = strchr(dev->serial, ' ');
-        if (c)
-                *c = '\0';
-        
-        strcpy(card->driver, MODNAME);
-        strcpy(card->shortname, dev->product_name);
-
-        len = snprintf(card->longname, sizeof(card->longname),
-                       "%s %s (serial %s, ",
-                       dev->vendor_name, dev->product_name, dev->serial);
-
-        if (len < sizeof(card->longname) - 2)
-                len += usb_make_path(usb_dev, card->longname + len,
-                                     sizeof(card->longname) - len);
-
-        card->longname[len++] = ')';
-        card->longname[len] = '\0';
+
+        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));
+
+        /* if the id was not passed as module option, fill it with a shortened
+         * version of the product string which does not contain any
+         * whitespaces */
+
+        if (*card->id == '\0') {
+                char id[sizeof(card->id)];
+
+                memset(id, 0, sizeof(id));
+
+                for (c = card->shortname, len = 0;
+                        *c && len < sizeof(card->id); c++)
+                        if (*c != ' ')
+                                id[len++] = *c;
+
+                snd_card_set_id(card, id);
+        }
+
+        usb_make_path(usb_dev, usbpath, sizeof(usbpath));
+        snprintf(card->longname, sizeof(card->longname),
+                       "%s %s (%s)",
+                       dev->vendor_name, dev->product_name, usbpath);
+
         setup_card(dev);
         return 0;
 }
 
-static int __devinit snd_probe(struct usb_interface *intf, 
+static int __devinit snd_probe(struct usb_interface *intf,
                      const struct usb_device_id *id)
 {
         int ret;
         struct snd_card *card;
         struct usb_device *device = interface_to_usbdev(intf);
-        
+
         ret = create_card(device, &card);
-        
+
         if (ret < 0)
                 return ret;
-                        
+
         usb_set_intfdata(intf, card);
         ret = init_card(caiaqdev(card));
         if (ret < 0) {
@@ -468,7 +473,7 @@ static int __devinit snd_probe(struct usb_interface *intf,
                 snd_card_free(card);
                 return ret;
         }
-        
+
         return 0;
 }
 
@@ -489,10 +494,10 @@ static void snd_disconnect(struct usb_interface *intf)
         snd_usb_caiaq_input_free(dev);
 #endif
         snd_usb_caiaq_audio_free(dev);
-        
+
         usb_kill_urb(&dev->ep1_in_urb);
         usb_kill_urb(&dev->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 4cce1ad7493d..ece73514854e 100644
--- a/sound/usb/caiaq/device.h
+++ b/sound/usb/caiaq/device.h
@@ -81,7 +81,6 @@ struct snd_usb_caiaqdev {
 
         char vendor_name[CAIAQ_USB_STR_LEN];
         char product_name[CAIAQ_USB_STR_LEN];
-        char serial[CAIAQ_USB_STR_LEN];
 
         int n_streams, n_audio_in, n_audio_out;
         int streaming, first_packet, output_running;
diff --git a/sound/usb/caiaq/midi.c b/sound/usb/caiaq/midi.c
index 8fa8cd88d763..538e8c00d31a 100644
--- a/sound/usb/caiaq/midi.c
+++ b/sound/usb/caiaq/midi.c
@@ -40,7 +40,7 @@ static void snd_usb_caiaq_midi_input_trigger(struct snd_rawmidi_substream *subst
 
         if (!dev)
                 return;
-        
+
         dev->midi_receive_substream = up ? substream : NULL;
 }
 
@@ -64,18 +64,18 @@ static void snd_usb_caiaq_midi_send(struct snd_usb_caiaqdev *dev,
                                     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,
                                    EP1_BUFSIZE - 3);
-        
+
         if (len <= 0)
                 return;
-        
+
         dev->midi_out_buf[2] = len;
         dev->midi_out_urb.transfer_buffer_length = len+3;
-        
+
         ret = usb_submit_urb(&dev->midi_out_urb, GFP_ATOMIC);
         if (ret < 0)
                 log("snd_usb_caiaq_midi_send(%p): usb_submit_urb() failed,"
@@ -88,7 +88,7 @@ static void snd_usb_caiaq_midi_send(struct snd_usb_caiaqdev *dev,
 static void snd_usb_caiaq_midi_output_trigger(struct snd_rawmidi_substream *substream, int up)
 {
         struct snd_usb_caiaqdev *dev = substream->rmidi->private_data;
-        
+
         if (up) {
                 dev->midi_out_substream = substream;
                 if (!dev->midi_out_active)
@@ -113,12 +113,12 @@ 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 *dev,
                                      int port, const char *buf, int len)
 {
         if (!dev->midi_receive_substream)
                 return;
-        
+
         snd_rawmidi_receive(dev->midi_receive_substream, buf, len);
 }
 
@@ -142,16 +142,16 @@ int snd_usb_caiaq_midi_init(struct snd_usb_caiaqdev *device)
 
         if (device->spec.num_midi_out > 0) {
                 rmidi->info_flags |= SNDRV_RAWMIDI_INFO_OUTPUT;
-                snd_rawmidi_set_ops(rmidi, SNDRV_RAWMIDI_STREAM_OUTPUT, 
+                snd_rawmidi_set_ops(rmidi, SNDRV_RAWMIDI_STREAM_OUTPUT,
                                     &snd_usb_caiaq_midi_output);
         }
 
         if (device->spec.num_midi_in > 0) {
                 rmidi->info_flags |= SNDRV_RAWMIDI_INFO_INPUT;
-                snd_rawmidi_set_ops(rmidi, SNDRV_RAWMIDI_STREAM_INPUT, 
+                snd_rawmidi_set_ops(rmidi, SNDRV_RAWMIDI_STREAM_INPUT,
                                     &snd_usb_caiaq_midi_input);
         }
-        
+
         device->rmidi = rmidi;
 
         return 0;
@@ -160,7 +160,7 @@ 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;
-        
+
         dev->midi_out_active = 0;
         if (urb->status != 0)
                 return;
diff --git a/sound/usb/usbaudio.c b/sound/usb/usbaudio.c
index e87121751dd0..c7b902358b7b 100644
--- a/sound/usb/usbaudio.c
+++ b/sound/usb/usbaudio.c
@@ -627,6 +627,7 @@ static int prepare_playback_urb(struct snd_usb_substream *subs,
         subs->hwptr_done += offs;
         if (subs->hwptr_done >= runtime->buffer_size)
                 subs->hwptr_done -= runtime->buffer_size;
+        runtime->delay += offs;
         spin_unlock_irqrestore(&subs->lock, flags);
         urb->transfer_buffer_length = offs * stride;
         if (period_elapsed)
@@ -636,12 +637,22 @@ static int prepare_playback_urb(struct snd_usb_substream *subs,
 
 /*
  * process after playback data complete
- * - nothing to do
+ * - decrease the delay count again
  */
 static int retire_playback_urb(struct snd_usb_substream *subs,
                                struct snd_pcm_runtime *runtime,
                                struct urb *urb)
 {
+        unsigned long flags;
+        int stride = runtime->frame_bits >> 3;
+        int processed = urb->transfer_buffer_length / stride;
+
+        spin_lock_irqsave(&subs->lock, flags);
+        if (processed > runtime->delay)
+                runtime->delay = 0;
+        else
+                runtime->delay -= processed;
+        spin_unlock_irqrestore(&subs->lock, flags);
         return 0;
 }
 
@@ -1520,6 +1531,7 @@ static int snd_usb_pcm_prepare(struct snd_pcm_substream *substream)
         subs->hwptr_done = 0;
         subs->transfer_done = 0;
         subs->phase = 0;
+        runtime->delay = 0;
 
         /* clear urbs (to be sure) */
         deactivate_urbs(subs, 0, 1);