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-rw-r--r--sound/usb/stream.c8
1 files changed, 8 insertions, 0 deletions
diff --git a/sound/usb/stream.c b/sound/usb/stream.c
index 8951f77a7201..7db2f8958e79 100644
--- a/sound/usb/stream.c
+++ b/sound/usb/stream.c
@@ -393,6 +393,14 @@ 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"