ignore usb interfaces not active

2 files changed, 4 insertions, 1 deletions

diff --git a/NEWS b/NEWS
index 9123921..a8ee612 100644
--- a/NEWS
+++ b/NEWS
@@ -4,6 +4,7 @@
   That fixed presenting something as usb_storage even if the
   device is ignored by usb_storage driver and handled on another 
   interface by option driver
+- ignore usb interfaces not active
 
 Version 0.8.1 - 3 April 2009, Christophe Fergeau
 
diff --git a/usb.c b/usb.c
index 856fba3..235b047 100644
--- a/usb.c
+++ b/usb.c
@@ -60,7 +60,7 @@ extern struct pciusb_entries usb_probe(void) {
 		case 'I': if (e->class_id == 0 || e->module == NULL) {
 			char driver[50];
 			int class_id, sub, prot = 0;
-			if (sscanf(buf, "I:%*1c If#=%*2d Alt=%*2d #EPs=%*2d Cls=%02x(%*5c) Sub=%02x Prot=%02x Driver=%s", &class_id, &sub, &prot, driver) == 4) {
+			if (sscanf(buf, "I:* If#=%*2d Alt=%*2d #EPs=%*2d Cls=%02x(%*5c) Sub=%02x Prot=%02x Driver=%s", &class_id, &sub, &prot, driver) == 4) {
 				unsigned long cid = (class_id * 0x100 + sub) * 0x100 + prot;
 				if (e->class_id == 0)
 					e->class_id = cid;
@@ -80,6 +80,8 @@ extern struct pciusb_entries usb_probe(void) {
 				if (e->class_id == (0x1*0x100+ 0x01)) /* USB_AUDIO_CLASS*0x100 + USB_SUBCLASS_AUDIO_CONTROL*/
 					e->module = strdup("snd_usb_audio");
 
+			} else if (sscanf(buf, "I:  If#=%*2d Alt=%*2d #EPs=%*2d Cls=%02x(%*5c) Sub=%02x Prot=%02x Driver=%s", &class_id, &sub, &prot, driver) == 4) {
+				/* Ignore interfaces not active */
 			} else fprintf(stderr, "%s %d: unknown ``I'' line\n", proc_usb_path, line);
 			break;
 		}