1 files changed, 2 insertions, 0 deletions
diff --git a/usb.c b/usb.c
index 6b83b7a..bbfba5a 100644
--- a/usb.c
+++ b/usb.c
@@ -67,6 +67,8 @@ extern struct pciusb_entries usb_probe(void) {
 				if (e->class_ == (0x1*0x100+ 0x01)) /* USB_AUDIO_CLASS*0x100 + USB_SUBCLASS_AUDIO_CONTROL*/
 					e->module = "snd-usb-audio";
 
+			} else if (sscanf(buf, "I:  If#=%*2d Alt=%*2d #EPs=%*2d Cls=%02x(%*5c) Sub=%02x Prot=%02x Driver=", &class_, &sub, &prot) == 3) {
+                    /* prevent spurious warnings for strange USB interfaces */
 			} else fprintf(stderr, "%s %d: unknown ``I'' line\n", proc_usb_path, line);
 			break;
 		}