uac3_conn 1442 sound/usb/mixer.c struct uac3_insertion_ctl_blk uac3_conn; uac3_conn 1446 sound/usb/mixer.c validx, idx, &uac3_conn, sizeof(uac3_conn)); uac3_conn 1447 sound/usb/mixer.c val = !!uac3_conn.bmConInserted;