diff options
| -rw-r--r-- | drivers/usb/core/driver.c | 5 |
1 files changed, 4 insertions, 1 deletions
diff --git a/drivers/usb/core/driver.c b/drivers/usb/core/driver.c index 8d989b1d3dc5..574f5a04c92d 100644 --- a/drivers/usb/core/driver.c +++ b/drivers/usb/core/driver.c @@ -60,7 +60,10 @@ ssize_t usb_store_new_id(struct usb_dynids *dynids, dynid->id.idVendor = idVendor; dynid->id.idProduct = idProduct; dynid->id.match_flags = USB_DEVICE_ID_MATCH_DEVICE; - if (fields == 3) { + if (fields > 2 && bInterfaceClass) { + if (bInterfaceClass > 255) + return -EINVAL; + dynid->id.bInterfaceClass = (u8)bInterfaceClass; dynid->id.match_flags |= USB_DEVICE_ID_MATCH_INT_CLASS; } |