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ALSA: usb-audio: Use strings in struct usb_dev for manufacturer & co

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The USB core already prepares the strings for manufacturer, product
and serial number, and we don't have to extract the string at each
time.  Replace the manual usb_string() calls with the corresponding
pointers in struct usb_dev as a code cleanup.

Link: https://patch.msgid.link/20260305130426.975604-1-tiwai@suse.de
Signed-off-by: Takashi Iwai <tiwai@suse.de>
This commit is contained in:
Takashi Iwai 2026-03-05 14:04:25 +01:00
parent 27b9bcad2b
commit b364a0d23c
2 changed files with 10 additions and 16 deletions
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20
sound/usb/card.c
View File

@ -631,9 +631,9 @@ static void usb_audio_make_shortname(struct usb_device *dev,
}
/* retrieve the device string as shortname */
if (!dev->descriptor.iProduct ||
usb_string(dev, dev->descriptor.iProduct,
card->shortname, sizeof(card->shortname)) <= 0) {
if (dev->product && *dev->product) {
strscpy(card->shortname, dev->product);
} else {
/* no name available from anywhere, so use ID */
scnprintf(card->shortname, sizeof(card->shortname),
"USB Device %#04x:%#04x",
@ -668,15 +668,11 @@ static void usb_audio_make_longname(struct usb_device *dev,
else if (quirk && quirk->vendor_name)
s = quirk->vendor_name;
*card->longname = 0;
if (s && *s) {
strscpy(card->longname, s, sizeof(card->longname));
} else {
/* retrieve the vendor and device strings as longname */
if (dev->descriptor.iManufacturer)
usb_string(dev, dev->descriptor.iManufacturer,
card->longname, sizeof(card->longname));
/* we don't really care if there isn't any vendor string */
}
if (s && *s)
strscpy(card->longname, s);
else if (dev->manufacturer && *dev->manufacturer)
strscpy(card->longname, dev->manufacturer);
if (*card->longname) {
strim(card->longname);
if (*card->longname)

6
sound/usb/midi2.c
View File

@ -1057,10 +1057,8 @@ static void set_fallback_rawmidi_names(struct snd_usb_midi2_interface *umidi)
strscpy(ump->core.name, ump->info.name,
sizeof(ump->core.name));
/* use serial number string as unique UMP product id */
if (!*ump->info.product_id && dev->descriptor.iSerialNumber)
usb_string(dev, dev->descriptor.iSerialNumber,
ump->info.product_id,
sizeof(ump->info.product_id));
if (!*ump->info.product_id && dev->serial && *dev->serial)
strscpy(ump->info.product_id, dev->serial);
}
}