[ALSA] usb-audio - cache vendor/product IDs

USB generic driver
Cache the decoded values of idVendor/idProduct to get rid of most of
those ugly le16_to_cpu() calls.

Signed-off-by: Clemens Ladisch <clemens@ladisch.de>

5 files changed, 139 insertions, 145 deletions

diff --git a/sound/usb/usbaudio.c b/sound/usb/usbaudio.c
index eeb09bb..e759b73 100644
--- a/sound/usb/usbaudio.c
+++ b/sound/usb/usbaudio.c
@@ -2184,17 +2184,15 @@ static int add_audio_endpoint(snd_usb_audio_t *chip, int stream, struct audiofor
 /*
  * check if the device uses big-endian samples
  */
-static int is_big_endian_format(struct usb_device *dev, struct audioformat *fp)
+static int is_big_endian_format(snd_usb_audio_t *chip, struct audioformat *fp)
 {
-	/* M-Audio */
-	if (le16_to_cpu(dev->descriptor.idVendor) == 0x0763) {
-		/* Quattro: captured data only */
-		if (le16_to_cpu(dev->descriptor.idProduct) == 0x2001 &&
-		    fp->endpoint & USB_DIR_IN)
-			return 1;
-		/* Audiophile USB */
-		if (le16_to_cpu(dev->descriptor.idProduct) == 0x2003)
+	switch (chip->usb_id) {
+	case USB_ID(0x0763, 0x2001): /* M-Audio Quattro: captured data only */
+		if (fp->endpoint & USB_DIR_IN)
 			return 1;
+		break;
+	case USB_ID(0x0763, 0x2003): /* M-Audio Audiophile USB */
+		return 1;
 	}
 	return 0;
 }
@@ -2208,7 +2206,7 @@ static int is_big_endian_format(struct usb_device *dev, struct audioformat *fp)
  * @format: the format tag (wFormatTag)
  * @fmt: the format type descriptor
  */
-static int parse_audio_format_i_type(struct usb_device *dev, struct audioformat *fp,
+static int parse_audio_format_i_type(snd_usb_audio_t *chip, struct audioformat *fp,
 				     int format, unsigned char *fmt)
 {
 	int pcm_format;
@@ -2221,12 +2219,12 @@ static int parse_audio_format_i_type(struct usb_device *dev, struct audioformat
 	switch (format) {
 	case 0: /* some devices don't define this correctly... */
 		snd_printdd(KERN_INFO "%d:%u:%d : format type 0 is detected, processed as PCM\n",
-			    dev->devnum, fp->iface, fp->altsetting);
+			    chip->dev->devnum, fp->iface, fp->altsetting);
 		/* fall-through */
 	case USB_AUDIO_FORMAT_PCM:
 		if (sample_width > sample_bytes * 8) {
 			snd_printk(KERN_INFO "%d:%u:%d : sample bitwidth %d in over sample bytes %d\n",
-				   dev->devnum, fp->iface, fp->altsetting,
+				   chip->dev->devnum, fp->iface, fp->altsetting,
 				   sample_width, sample_bytes);
 		}
 		/* check the format byte size */
@@ -2235,13 +2233,13 @@ static int parse_audio_format_i_type(struct usb_device *dev, struct audioformat
 			pcm_format = SNDRV_PCM_FORMAT_S8;
 			break;
 		case 2:
-			if (is_big_endian_format(dev, fp))
+			if (is_big_endian_format(chip, fp))
 				pcm_format = SNDRV_PCM_FORMAT_S16_BE; /* grrr, big endian!! */
 			else
 				pcm_format = SNDRV_PCM_FORMAT_S16_LE;
 			break;
 		case 3:
-			if (is_big_endian_format(dev, fp))
+			if (is_big_endian_format(chip, fp))
 				pcm_format = SNDRV_PCM_FORMAT_S24_3BE; /* grrr, big endian!! */
 			else
 				pcm_format = SNDRV_PCM_FORMAT_S24_3LE;
@@ -2251,14 +2249,14 @@ static int parse_audio_format_i_type(struct usb_device *dev, struct audioformat
 			break;
 		default:
 			snd_printk(KERN_INFO "%d:%u:%d : unsupported sample bitwidth %d in %d bytes\n",
-				   dev->devnum, fp->iface, fp->altsetting, sample_width, sample_bytes);
+				   chip->dev->devnum, fp->iface,
+				   fp->altsetting, sample_width, sample_bytes);
 			break;
 		}
 		break;
 	case USB_AUDIO_FORMAT_PCM8:
 		/* Dallas DS4201 workaround */
-		if (le16_to_cpu(dev->descriptor.idVendor) == 0x04fa &&
-		    le16_to_cpu(dev->descriptor.idProduct) == 0x4201)
+		if (chip->usb_id == USB_ID(0x04fa, 0x4201))
 			pcm_format = SNDRV_PCM_FORMAT_S8;
 		else
 			pcm_format = SNDRV_PCM_FORMAT_U8;
@@ -2274,7 +2272,7 @@ static int parse_audio_format_i_type(struct usb_device *dev, struct audioformat
 		break;
 	default:
 		snd_printk(KERN_INFO "%d:%u:%d : unsupported format type %d\n",
-			   dev->devnum, fp->iface, fp->altsetting, format);
+			   chip->dev->devnum, fp->iface, fp->altsetting, format);
 		break;
 	}
 	return pcm_format;
@@ -2291,13 +2289,13 @@ static int parse_audio_format_i_type(struct usb_device *dev, struct audioformat
  * @offset: the start offset of descriptor pointing the rate type
  *          (7 for type I and II, 8 for type II)
  */
-static int parse_audio_format_rates(struct usb_device *dev, struct audioformat *fp,
+static int parse_audio_format_rates(snd_usb_audio_t *chip, struct audioformat *fp,
 				    unsigned char *fmt, int offset)
 {
 	int nr_rates = fmt[offset];
 	if (fmt[0] < offset + 1 + 3 * (nr_rates ? nr_rates : 2)) {
 		snd_printk(KERN_ERR "%d:%u:%d : invalid FORMAT_TYPE desc\n",
-				   dev->devnum, fp->iface, fp->altsetting);
+				   chip->dev->devnum, fp->iface, fp->altsetting);
 		return -1;
 	}
 
@@ -2344,7 +2342,7 @@ static int parse_audio_format_rates(struct usb_device *dev, struct audioformat *
 /*
  * parse the format type I and III descriptors
  */
-static int parse_audio_format_i(struct usb_device *dev, struct audioformat *fp,
+static int parse_audio_format_i(snd_usb_audio_t *chip, struct audioformat *fp,
 				int format, unsigned char *fmt)
 {
 	int pcm_format;
@@ -2356,7 +2354,7 @@ static int parse_audio_format_i(struct usb_device *dev, struct audioformat *fp,
 		 */
 		pcm_format = SNDRV_PCM_FORMAT_S16_LE;
 	} else {
-		pcm_format = parse_audio_format_i_type(dev, fp, format, fmt);
+		pcm_format = parse_audio_format_i_type(chip, fp, format, fmt);
 		if (pcm_format < 0)
 			return -1;
 	}
@@ -2364,16 +2362,16 @@ static int parse_audio_format_i(struct usb_device *dev, struct audioformat *fp,
 	fp->channels = fmt[4];
 	if (fp->channels < 1) {
 		snd_printk(KERN_ERR "%d:%u:%d : invalid channels %d\n",
-			   dev->devnum, fp->iface, fp->altsetting, fp->channels);
+			   chip->dev->devnum, fp->iface, fp->altsetting, fp->channels);
 		return -1;
 	}
-	return parse_audio_format_rates(dev, fp, fmt, 7);
+	return parse_audio_format_rates(chip, fp, fmt, 7);
 }
 
 /*
  * prase the format type II descriptor
  */
-static int parse_audio_format_ii(struct usb_device *dev, struct audioformat *fp,
+static int parse_audio_format_ii(snd_usb_audio_t *chip, struct audioformat *fp,
 				 int format, unsigned char *fmt)
 {
 	int brate, framesize;
@@ -2388,7 +2386,7 @@ static int parse_audio_format_ii(struct usb_device *dev, struct audioformat *fp,
 		break;
 	default:
 		snd_printd(KERN_INFO "%d:%u:%d : unknown format tag 0x%x is detected.  processed as MPEG.\n",
-			   dev->devnum, fp->iface, fp->altsetting, format);
+			   chip->dev->devnum, fp->iface, fp->altsetting, format);
 		fp->format = SNDRV_PCM_FORMAT_MPEG;
 		break;
 	}
@@ -2397,10 +2395,10 @@ static int parse_audio_format_ii(struct usb_device *dev, struct audioformat *fp,
 	framesize = combine_word(&fmt[6]); /* fmt[6,7]: wSamplesPerFrame */
 	snd_printd(KERN_INFO "found format II with max.bitrate = %d, frame size=%d\n", brate, framesize);
 	fp->frame_size = framesize;
-	return parse_audio_format_rates(dev, fp, fmt, 8); /* fmt[8..] sample rates */
+	return parse_audio_format_rates(chip, fp, fmt, 8); /* fmt[8..] sample rates */
 }
 
-static int parse_audio_format(struct usb_device *dev, struct audioformat *fp,
+static int parse_audio_format(snd_usb_audio_t *chip, struct audioformat *fp,
 			      int format, unsigned char *fmt, int stream)
 {
 	int err;
@@ -2408,14 +2406,14 @@ static int parse_audio_format(struct usb_device *dev, struct audioformat *fp,
 	switch (fmt[3]) {
 	case USB_FORMAT_TYPE_I:
 	case USB_FORMAT_TYPE_III:
-		err = parse_audio_format_i(dev, fp, format, fmt);
+		err = parse_audio_format_i(chip, fp, format, fmt);
 		break;
 	case USB_FORMAT_TYPE_II:
-		err = parse_audio_format_ii(dev, fp, format, fmt);
+		err = parse_audio_format_ii(chip, fp, format, fmt);
 		break;
 	default:
 		snd_printd(KERN_INFO "%d:%u:%d : format type %d is not supported yet\n",
-			   dev->devnum, fp->iface, fp->altsetting, fmt[3]);
+			   chip->dev->devnum, fp->iface, fp->altsetting, fmt[3]);
 		return -1;
 	}
 	fp->fmt_type = fmt[3];
@@ -2426,9 +2424,8 @@ static int parse_audio_format(struct usb_device *dev, struct audioformat *fp,
 	/* extigy apparently supports sample rates other than 48k
 	 * but not in ordinary way.  so we enable only 48k atm.
 	 */
-	if (le16_to_cpu(dev->descriptor.idVendor) == 0x041e && 
-	    (le16_to_cpu(dev->descriptor.idProduct) == 0x3000 ||
-	     le16_to_cpu(dev->descriptor.idProduct) == 0x3020)) {
+	if (chip->usb_id == USB_ID(0x041e, 0x3000) ||
+	    chip->usb_id == USB_ID(0x041e, 0x3020)) {
 		if (fmt[3] == USB_FORMAT_TYPE_I &&
 		    stream == SNDRV_PCM_STREAM_PLAYBACK &&
 		    fp->rates != SNDRV_PCM_RATE_48000 &&
@@ -2532,8 +2529,7 @@ static int parse_audio_endpoints(snd_usb_audio_t *chip, int iface_no)
 		/* some quirks for attributes here */
 
 		/* workaround for AudioTrak Optoplay */
-		if (le16_to_cpu(dev->descriptor.idVendor) == 0x0a92 &&
-		    le16_to_cpu(dev->descriptor.idProduct) == 0x0053) {
+		if (chip->usb_id == USB_ID(0x0a92, 0x0053)) {
 			/* Optoplay sets the sample rate attribute although
 			 * it seems not supporting it in fact.
 			 */
@@ -2541,8 +2537,7 @@ static int parse_audio_endpoints(snd_usb_audio_t *chip, int iface_no)
 		}
 
 		/* workaround for M-Audio Audiophile USB */
-		if (le16_to_cpu(dev->descriptor.idVendor) == 0x0763 &&
-		    le16_to_cpu(dev->descriptor.idProduct) == 0x2003) {
+		if (chip->usb_id == USB_ID(0x0763, 0x2003)) {
 			/* doesn't set the sample rate attribute, but supports it */
 			fp->attributes |= EP_CS_ATTR_SAMPLE_RATE;
 		}
@@ -2551,11 +2546,9 @@ static int parse_audio_endpoints(snd_usb_audio_t *chip, int iface_no)
 		 * plantronics headset and Griffin iMic have set adaptive-in
 		 * although it's really not...
 		 */
-		if ((le16_to_cpu(dev->descriptor.idVendor) == 0x047f &&
-		     le16_to_cpu(dev->descriptor.idProduct) == 0x0ca1) ||
+		if (chip->usb_id == USB_ID(0x047f, 0x0ca1) ||
 		    /* Griffin iMic (note that there is an older model 77d:223) */
-		    (le16_to_cpu(dev->descriptor.idVendor) == 0x077d &&
-		     le16_to_cpu(dev->descriptor.idProduct) == 0x07af)) {
+		    chip->usb_id == USB_ID(0x077d, 0x07af)) {
 			fp->ep_attr &= ~EP_ATTR_MASK;
 			if (stream == SNDRV_PCM_STREAM_PLAYBACK)
 				fp->ep_attr |= EP_ATTR_ADAPTIVE;
@@ -2564,7 +2557,7 @@ static int parse_audio_endpoints(snd_usb_audio_t *chip, int iface_no)
 		}
 
 		/* ok, let's parse further... */
-		if (parse_audio_format(dev, fp, format, fmt, stream) < 0) {
+		if (parse_audio_format(chip, fp, format, fmt, stream) < 0) {
 			kfree(fp->rate_table);
 			kfree(fp);
 			continue;
@@ -2799,7 +2792,7 @@ static int create_ua700_ua25_quirk(snd_usb_audio_t *chip,
 			.type = QUIRK_MIDI_FIXED_ENDPOINT,
 			.data = &ua25_ep
 		};
-		if (le16_to_cpu(chip->dev->descriptor.idProduct) == 0x002b)
+		if (chip->usb_id == USB_ID(0x0582, 0x002b))
 			return snd_usb_create_midi_interface(chip, iface,
 							     &ua700_quirk);
 		else
@@ -3018,8 +3011,8 @@ static void proc_audio_usbid_read(snd_info_entry_t *entry, snd_info_buffer_t *bu
 	snd_usb_audio_t *chip = entry->private_data;
 	if (! chip->shutdown)
 		snd_iprintf(buffer, "%04x:%04x\n", 
-			    le16_to_cpu(chip->dev->descriptor.idVendor),
-			    le16_to_cpu(chip->dev->descriptor.idProduct));
+			    USB_ID_VENDOR(chip->usb_id),
+			    USB_ID_PRODUCT(chip->usb_id));
 }
 
 static void snd_usb_audio_create_proc(snd_usb_audio_t *chip)
@@ -3089,6 +3082,8 @@ static int snd_usb_audio_create(struct usb_device *dev, int idx,
 	chip->index = idx;
 	chip->dev = dev;
 	chip->card = card;
+	chip->usb_id = USB_ID(le16_to_cpu(dev->descriptor.idVendor),
+			      le16_to_cpu(dev->descriptor.idProduct));
 	INIT_LIST_HEAD(&chip->pcm_list);
 	INIT_LIST_HEAD(&chip->midi_list);
 	INIT_LIST_HEAD(&chip->mixer_list);
@@ -3101,8 +3096,7 @@ static int snd_usb_audio_create(struct usb_device *dev, int idx,
 
 	strcpy(card->driver, "USB-Audio");
 	sprintf(component, "USB%04x:%04x",
-		le16_to_cpu(dev->descriptor.idVendor),
-		le16_to_cpu(dev->descriptor.idProduct));
+		USB_ID_VENDOR(chip->usb_id), USB_ID_PRODUCT(chip->usb_id));
 	snd_component_add(card, component);
 
 	/* retrieve the device string as shortname */
@@ -3114,8 +3108,8 @@ static int snd_usb_audio_create(struct usb_device *dev, int idx,
       			       card->shortname, sizeof(card->shortname)) <= 0) {
 			/* no name available from anywhere, so use ID */
 			sprintf(card->shortname, "USB Device %#04x:%#04x",
-				le16_to_cpu(dev->descriptor.idVendor),
-				le16_to_cpu(dev->descriptor.idProduct));
+				USB_ID_VENDOR(chip->usb_id),
+				USB_ID_PRODUCT(chip->usb_id));
 		}
 	}
 
@@ -3173,17 +3167,19 @@ static void *snd_usb_audio_probe(struct usb_device *dev,
 	snd_usb_audio_t *chip;
 	struct usb_host_interface *alts;
 	int ifnum;
+	u32 id;
 
 	alts = &intf->altsetting[0];
 	ifnum = get_iface_desc(alts)->bInterfaceNumber;
+	id = USB_ID(le16_to_cpu(dev->descriptor.idVendor),
+		    le16_to_cpu(dev->descriptor.idProduct));
 
 	if (quirk && quirk->ifnum >= 0 && ifnum != quirk->ifnum)
 		goto __err_val;
 
 	/* SB Extigy needs special boot-up sequence */
 	/* if more models come, this will go to the quirk list. */
-	if (le16_to_cpu(dev->descriptor.idVendor) == 0x041e && 
-	    le16_to_cpu(dev->descriptor.idProduct) == 0x3000) {
+	if (id == USB_ID(0x041e, 0x3000)) {
 		if (snd_usb_extigy_boot_quirk(dev, intf) < 0)
 			goto __err_val;
 		config = dev->actconfig;
@@ -3217,8 +3213,8 @@ static void *snd_usb_audio_probe(struct usb_device *dev,
 		}
 		for (i = 0; i < SNDRV_CARDS; i++)
 			if (enable[i] && ! usb_chip[i] &&
-			    (vid[i] == -1 || vid[i] == le16_to_cpu(dev->descriptor.idVendor)) &&
-			    (pid[i] == -1 || pid[i] == le16_to_cpu(dev->descriptor.idProduct))) {
+			    (vid[i] == -1 || vid[i] == USB_ID_VENDOR(id)) &&
+			    (pid[i] == -1 || pid[i] == USB_ID_PRODUCT(id))) {
 				if (snd_usb_audio_create(dev, i, quirk, &chip) < 0) {
 					goto __error;
 				}
diff --git a/sound/usb/usbaudio.h b/sound/usb/usbaudio.h
index 41d842d..aedb42a 100644
--- a/sound/usb/usbaudio.h
+++ b/sound/usb/usbaudio.h
@@ -118,6 +118,11 @@
 /* maximum number of endpoints per interface */
 #define MIDI_MAX_ENDPOINTS 2
 
+/* handling of USB vendor/product ID pairs as 32-bit numbers */
+#define USB_ID(vendor, product) (((vendor) << 16) | (product))
+#define USB_ID_VENDOR(id) ((id) >> 16)
+#define USB_ID_PRODUCT(id) ((u16)(id))
+
 /*
  */
 
@@ -127,6 +132,7 @@ struct snd_usb_audio {
 	int index;
 	struct usb_device *dev;
 	snd_card_t *card;
+	u32 usb_id;
 	int shutdown;
 	int num_interfaces;
 
diff --git a/sound/usb/usbmidi.c b/sound/usb/usbmidi.c
index 304a134..bee7006 100644
--- a/sound/usb/usbmidi.c
+++ b/sound/usb/usbmidi.c
@@ -955,88 +955,87 @@ static snd_rawmidi_substream_t* snd_usbmidi_find_substream(snd_usb_midi_t* umidi
  * such as internal control or synthesizer ports.
  */
 static struct {
-	__u16 vendor;
-	__u16 product;
+	u32 id;
 	int port;
 	const char *name_format;
 } snd_usbmidi_port_names[] = {
 	/* Roland UA-100 */
-	{0x0582, 0x0000, 2, "%s Control"},
+	{ USB_ID(0x0582, 0x0000), 2, "%s Control" },
 	/* Roland SC-8850 */
-	{0x0582, 0x0003, 0, "%s Part A"},
-	{0x0582, 0x0003, 1, "%s Part B"},
-	{0x0582, 0x0003, 2, "%s Part C"},
-	{0x0582, 0x0003, 3, "%s Part D"},
-	{0x0582, 0x0003, 4, "%s MIDI 1"},
-	{0x0582, 0x0003, 5, "%s MIDI 2"},
+	{ USB_ID(0x0582, 0x0003), 0, "%s Part A" },
+	{ USB_ID(0x0582, 0x0003), 1, "%s Part B" },
+	{ USB_ID(0x0582, 0x0003), 2, "%s Part C" },
+	{ USB_ID(0x0582, 0x0003), 3, "%s Part D" },
+	{ USB_ID(0x0582, 0x0003), 4, "%s MIDI 1" },
+	{ USB_ID(0x0582, 0x0003), 5, "%s MIDI 2" },
 	/* Roland U-8 */
-	{0x0582, 0x0004, 0, "%s MIDI"},
-	{0x0582, 0x0004, 1, "%s Control"},
+	{ USB_ID(0x0582, 0x0004), 0, "%s MIDI" },
+	{ USB_ID(0x0582, 0x0004), 1, "%s Control" },
 	/* Roland SC-8820 */
-	{0x0582, 0x0007, 0, "%s Part A"},
-	{0x0582, 0x0007, 1, "%s Part B"},
-	{0x0582, 0x0007, 2, "%s MIDI"},
+	{ USB_ID(0x0582, 0x0007), 0, "%s Part A" },
+	{ USB_ID(0x0582, 0x0007), 1, "%s Part B" },
+	{ USB_ID(0x0582, 0x0007), 2, "%s MIDI" },
 	/* Roland SK-500 */
-	{0x0582, 0x000b, 0, "%s Part A"},
-	{0x0582, 0x000b, 1, "%s Part B"},
-	{0x0582, 0x000b, 2, "%s MIDI"},
+	{ USB_ID(0x0582, 0x000b), 0, "%s Part A" },
+	{ USB_ID(0x0582, 0x000b), 1, "%s Part B" },
+	{ USB_ID(0x0582, 0x000b), 2, "%s MIDI" },
 	/* Roland SC-D70 */
-	{0x0582, 0x000c, 0, "%s Part A"},
-	{0x0582, 0x000c, 1, "%s Part B"},
-	{0x0582, 0x000c, 2, "%s MIDI"},
+	{ USB_ID(0x0582, 0x000c), 0, "%s Part A" },
+	{ USB_ID(0x0582, 0x000c), 1, "%s Part B" },
+	{ USB_ID(0x0582, 0x000c), 2, "%s MIDI" },
 	/* Edirol UM-880 */
-	{0x0582, 0x0014, 8, "%s Control"},
+	{ USB_ID(0x0582, 0x0014), 8, "%s Control" },
 	/* Edirol SD-90 */
-	{0x0582, 0x0016, 0, "%s Part A"},
-	{0x0582, 0x0016, 1, "%s Part B"},
-	{0x0582, 0x0016, 2, "%s MIDI 1"},
-	{0x0582, 0x0016, 3, "%s MIDI 2"},
+	{ USB_ID(0x0582, 0x0016), 0, "%s Part A" },
+	{ USB_ID(0x0582, 0x0016), 1, "%s Part B" },
+	{ USB_ID(0x0582, 0x0016), 2, "%s MIDI 1" },
+	{ USB_ID(0x0582, 0x0016), 3, "%s MIDI 2" },
 	/* Edirol UM-550 */
-	{0x0582, 0x0023, 5, "%s Control"},
+	{ USB_ID(0x0582, 0x0023), 5, "%s Control" },
 	/* Edirol SD-20 */
-	{0x0582, 0x0027, 0, "%s Part A"},
-	{0x0582, 0x0027, 1, "%s Part B"},
-	{0x0582, 0x0027, 2, "%s MIDI"},
+	{ USB_ID(0x0582, 0x0027), 0, "%s Part A" },
+	{ USB_ID(0x0582, 0x0027), 1, "%s Part B" },
+	{ USB_ID(0x0582, 0x0027), 2, "%s MIDI" },
 	/* Edirol SD-80 */
-	{0x0582, 0x0029, 0, "%s Part A"},
-	{0x0582, 0x0029, 1, "%s Part B"},
-	{0x0582, 0x0029, 2, "%s MIDI 1"},
-	{0x0582, 0x0029, 3, "%s MIDI 2"},
+	{ USB_ID(0x0582, 0x0029), 0, "%s Part A" },
+	{ USB_ID(0x0582, 0x0029), 1, "%s Part B" },
+	{ USB_ID(0x0582, 0x0029), 2, "%s MIDI 1" },
+	{ USB_ID(0x0582, 0x0029), 3, "%s MIDI 2" },
 	/* Edirol UA-700 */
-	{0x0582, 0x002b, 0, "%s MIDI"},
-	{0x0582, 0x002b, 1, "%s Control"},
+	{ USB_ID(0x0582, 0x002b), 0, "%s MIDI" },
+	{ USB_ID(0x0582, 0x002b), 1, "%s Control" },
 	/* Roland VariOS */
-	{0x0582, 0x002f, 0, "%s MIDI"},
-	{0x0582, 0x002f, 1, "%s External MIDI"},
-	{0x0582, 0x002f, 2, "%s Sync"},
+	{ USB_ID(0x0582, 0x002f), 0, "%s MIDI" },
+	{ USB_ID(0x0582, 0x002f), 1, "%s External MIDI" },
+	{ USB_ID(0x0582, 0x002f), 2, "%s Sync" },
 	/* Edirol PCR */
-	{0x0582, 0x0033, 0, "%s MIDI"},
-	{0x0582, 0x0033, 1, "%s 1"},
-	{0x0582, 0x0033, 2, "%s 2"},
+	{ USB_ID(0x0582, 0x0033), 0, "%s MIDI" },
+	{ USB_ID(0x0582, 0x0033), 1, "%s 1" },
+	{ USB_ID(0x0582, 0x0033), 2, "%s 2" },
 	/* BOSS GS-10 */
-	{0x0582, 0x003b, 0, "%s MIDI"},
-	{0x0582, 0x003b, 1, "%s Control"},
+	{ USB_ID(0x0582, 0x003b), 0, "%s MIDI" },
+	{ USB_ID(0x0582, 0x003b), 1, "%s Control" },
 	/* Edirol UA-1000 */
-	{0x0582, 0x0044, 0, "%s MIDI"},
-	{0x0582, 0x0044, 1, "%s Control"},
+	{ USB_ID(0x0582, 0x0044), 0, "%s MIDI" },
+	{ USB_ID(0x0582, 0x0044), 1, "%s Control" },
 	/* Edirol UR-80 */
-	{0x0582, 0x0048, 0, "%s MIDI"},
-	{0x0582, 0x0048, 1, "%s 1"},
-	{0x0582, 0x0048, 2, "%s 2"},
+	{ USB_ID(0x0582, 0x0048), 0, "%s MIDI" },
+	{ USB_ID(0x0582, 0x0048), 1, "%s 1" },
+	{ USB_ID(0x0582, 0x0048), 2, "%s 2" },
 	/* Edirol PCR-A */
-	{0x0582, 0x004d, 0, "%s MIDI"},
-	{0x0582, 0x004d, 1, "%s 1"},
-	{0x0582, 0x004d, 2, "%s 2"},
+	{ USB_ID(0x0582, 0x004d), 0, "%s MIDI" },
+	{ USB_ID(0x0582, 0x004d), 1, "%s 1" },
+	{ USB_ID(0x0582, 0x004d), 2, "%s 2" },
 	/* M-Audio MidiSport 8x8 */
-	{0x0763, 0x1031, 8, "%s Control"},
-	{0x0763, 0x1033, 8, "%s Control"},
+	{ USB_ID(0x0763, 0x1031), 8, "%s Control" },
+	{ USB_ID(0x0763, 0x1033), 8, "%s Control" },
 	/* MOTU Fastlane */
-	{0x07fd, 0x0001, 0, "%s MIDI A"},
-	{0x07fd, 0x0001, 1, "%s MIDI B"},
+	{ USB_ID(0x07fd, 0x0001), 0, "%s MIDI A" },
+	{ USB_ID(0x07fd, 0x0001), 1, "%s MIDI B" },
 	/* Emagic Unitor8/AMT8/MT4 */
-	{0x086a, 0x0001, 8, "%s Broadcast"},
-	{0x086a, 0x0002, 8, "%s Broadcast"},
-	{0x086a, 0x0003, 4, "%s Broadcast"},
+	{ USB_ID(0x086a, 0x0001), 8, "%s Broadcast" },
+	{ USB_ID(0x086a, 0x0002), 8, "%s Broadcast" },
+	{ USB_ID(0x086a, 0x0003), 4, "%s Broadcast" },
 };
 
 static void snd_usbmidi_init_substream(snd_usb_midi_t* umidi,
@@ -1044,7 +1043,6 @@ static void snd_usbmidi_init_substream(snd_usb_midi_t* umidi,
 				       snd_rawmidi_substream_t** rsubstream)
 {
 	int i;
-	__u16 vendor, product;
 	const char *name_format;
 
 	snd_rawmidi_substream_t* substream = snd_usbmidi_find_substream(umidi, stream, number);
@@ -1055,11 +1053,8 @@ static void snd_usbmidi_init_substream(snd_usb_midi_t* umidi,
 
 	/* TODO: read port name from jack descriptor */
 	name_format = "%s MIDI %d";
-	vendor = le16_to_cpu(umidi->chip->dev->descriptor.idVendor);
-	product = le16_to_cpu(umidi->chip->dev->descriptor.idProduct);
 	for (i = 0; i < ARRAY_SIZE(snd_usbmidi_port_names); ++i) {
-		if (snd_usbmidi_port_names[i].vendor == vendor &&
-		    snd_usbmidi_port_names[i].product == product &&
+		if (snd_usbmidi_port_names[i].id == umidi->chip->usb_id &&
 		    snd_usbmidi_port_names[i].port == number) {
 			name_format = snd_usbmidi_port_names[i].name_format;
 			break;
@@ -1226,7 +1221,7 @@ static int snd_usbmidi_detect_endpoints(snd_usb_midi_t* umidi,
 	struct usb_endpoint_descriptor* epd;
 	int i, out_eps = 0, in_eps = 0;
 
-	if (le16_to_cpu(umidi->chip->dev->descriptor.idVendor) == 0x0582)
+	if (USB_ID_VENDOR(umidi->chip->usb_id) == 0x0582)
 		snd_usbmidi_switch_roland_altsetting(umidi);
 
 	if (endpoint[0].out_ep || endpoint[0].in_ep)
diff --git a/sound/usb/usbmixer.c b/sound/usb/usbmixer.c
index 7ea42d4..bfaec4f 100644
--- a/sound/usb/usbmixer.c
+++ b/sound/usb/usbmixer.c
@@ -89,8 +89,6 @@ struct usb_mixer_build {
 	struct usb_mixer_interface *mixer;
 	unsigned char *buffer;
 	unsigned int buflen;
-	unsigned short vendor;
-	unsigned short product;
 	DECLARE_BITMAP(unitbitmap, 256);
 	usb_audio_term_t oterm;
 	const struct usbmix_name_map *map;
@@ -906,11 +904,16 @@ static void build_feature_ctl(mixer_build_t *state, unsigned char *desc,
 	/* note that detection between firmware 2.1.1.7 (N101) and later 2.1.1.21 */
 	/* is not very clear from datasheets */
 	/* I hope that the min value is -15360 for newer firmware --jk */
-	if (((state->vendor == 0x471 && (state->product == 0x104 || state->product == 0x105 || state->product == 0x101)) ||
-	     (state->vendor == 0x672 && state->product == 0x1041)) && !strcmp(kctl->id.name, "PCM Playback Volume") &&
-	     cval->min == -15616) {
-		snd_printk("USB Audio: using volume control quirk for the UDA1321/N101 chip\n");
-		cval->max = -256;
+	switch (state->chip->usb_id) {
+	case USB_ID(0x0471, 0x0101):
+	case USB_ID(0x0471, 0x0104):
+	case USB_ID(0x0471, 0x0105):
+	case USB_ID(0x0672, 0x1041):
+		if (!strcmp(kctl->id.name, "PCM Playback Volume") &&
+		    cval->min == -15616) {
+			snd_printk("using volume control quirk for the UDA1321/N101 chip\n");
+			cval->max = -256;
+		}
 	}
 
 	snd_printdd(KERN_INFO "[%d] FU [%s] ch = %d, val = %d/%d/%d\n",
@@ -1574,7 +1577,6 @@ static int snd_usb_mixer_controls(struct usb_mixer_interface *mixer)
 	mixer_build_t state;
 	int err;
 	const struct usbmix_ctl_map *map;
-	struct usb_device_descriptor *dev = &mixer->chip->dev->descriptor;
 	struct usb_host_interface *hostif;
 
 	hostif = &usb_ifnum_to_if(mixer->chip->dev, mixer->ctrlif)->altsetting[0];
@@ -1583,12 +1585,10 @@ static int snd_usb_mixer_controls(struct usb_mixer_interface *mixer)
 	state.mixer = mixer;
 	state.buffer = hostif->extra;
 	state.buflen = hostif->extralen;
-	state.vendor = le16_to_cpu(dev->idVendor);
-	state.product = le16_to_cpu(dev->idProduct);
 
 	/* check the mapping table */
-	for (map = usbmix_ctl_maps; map->vendor; map++) {
-		if (map->vendor == state.vendor && map->product == state.product) {
+	for (map = usbmix_ctl_maps; map->id; map++) {
+		if (map->id == state.chip->usb_id) {
 			state.map = map->map;
 			state.selector_map = map->selector_map;
 			mixer->ignore_ctl_error = map->ignore_ctl_error;
@@ -1766,12 +1766,12 @@ static int snd_usb_soundblaster_remote_init(struct usb_mixer_interface *mixer)
 	snd_hwdep_t *hwdep;
 	int err, len;
 
-	switch (le16_to_cpu(mixer->chip->dev->descriptor.idProduct)) {
-	case 0x3000:
+	switch (mixer->chip->usb_id) {
+	case USB_ID(0x041e, 0x3000):
 		mixer->rc_type = RC_EXTIGY;
 		len = 2;
 		break;
-	case 0x3020:
+	case USB_ID(0x041e, 0x3020):
 		mixer->rc_type = RC_AUDIGY2NX;
 		len = 6;
 		break;
@@ -1844,11 +1844,9 @@ int snd_usb_create_mixer(snd_usb_audio_t *chip, int ctrlif)
 		return err;
 	}
 
-	if (le16_to_cpu(chip->dev->descriptor.idVendor) == 0x041e) {
-		if ((err = snd_usb_soundblaster_remote_init(mixer)) < 0) {
-			snd_usb_mixer_free(mixer);
-			return err;
-		}
+	if ((err = snd_usb_soundblaster_remote_init(mixer)) < 0) {
+		snd_usb_mixer_free(mixer);
+		return err;
 	}
 
 	err = snd_device_new(chip->card, SNDRV_DEV_LOWLEVEL, mixer, &dev_ops);
diff --git a/sound/usb/usbmixer_maps.c b/sound/usb/usbmixer_maps.c
index adb0abb..f05500b0 100644
--- a/sound/usb/usbmixer_maps.c
+++ b/sound/usb/usbmixer_maps.c
@@ -33,8 +33,7 @@ struct usbmix_selector_map {
 };
 
 struct usbmix_ctl_map {
-	int vendor;
-	int product;
+	u32 id;
 	const struct usbmix_name_map *map;
 	const struct usbmix_selector_map *selector_map;
 	int ignore_ctl_error;
@@ -225,26 +224,26 @@ static struct usbmix_name_map justlink_map[] = {
 
 static struct usbmix_ctl_map usbmix_ctl_maps[] = {
 	{
-		.vendor = 0x41e, .product = 0x3000,
+		.id = USB_ID(0x041e, 0x3000),
 		.map = extigy_map,
 		.ignore_ctl_error = 1,
 	},
 	{
-		.vendor = 0x41e, .product = 0x3010,
+		.id = USB_ID(0x041e, 0x3010),
 		.map = mp3plus_map,
 	},
 	{
-		.vendor = 0x41e, .product = 0x3020,
+		.id = USB_ID(0x041e, 0x3020),
 		.map = audigy2nx_map,
 		.selector_map = audigy2nx_selectors,
 	},
 	{
-		.vendor = 0x8bb, .product = 0x2702,
+		.id = USB_ID(0x08bb, 0x2702),
 		.map = linex_map,
 		.ignore_ctl_error = 1,
 	},
 	{
-		.vendor = 0xc45, .product = 0x1158,
+		.id = USB_ID(0x0c45, 0x1158),
 		.map = justlink_map,
 	},
 	{ 0 } /* terminator */