diff options
Diffstat (limited to 'sound')
| -rw-r--r-- | sound/usb/stream.c | 8 |
1 files changed, 8 insertions, 0 deletions
diff --git a/sound/usb/stream.c b/sound/usb/stream.c index ad181d538bd..bab6dbc1227 100644 --- a/sound/usb/stream.c +++ b/sound/usb/stream.c @@ -396,6 +396,14 @@ static int parse_uac_endpoint_attributes(struct snd_usb_audio *chip, if (!csep && altsd->bNumEndpoints >= 2) csep = snd_usb_find_desc(alts->endpoint[1].extra, alts->endpoint[1].extralen, NULL, USB_DT_CS_ENDPOINT); + /* + * If we can't locate the USB_DT_CS_ENDPOINT descriptor in the extra + * bytes after the first endpoint, go search the entire interface. + * Some devices have it directly *before* the standard endpoint. + */ + if (!csep) + csep = snd_usb_find_desc(alts->extra, alts->extralen, NULL, USB_DT_CS_ENDPOINT); + if (!csep || csep->bLength < 7 || csep->bDescriptorSubtype != UAC_EP_GENERAL) { snd_printk(KERN_WARNING "%d:%u:%d : no or invalid" |