diff options
Diffstat (limited to 'drivers/usb/core/driver.c')
| -rw-r--r-- | drivers/usb/core/driver.c | 9 |
1 files changed, 7 insertions, 2 deletions
diff --git a/drivers/usb/core/driver.c b/drivers/usb/core/driver.c index f536aebc958..23d7bbd199a 100644 --- a/drivers/usb/core/driver.c +++ b/drivers/usb/core/driver.c @@ -622,14 +622,15 @@ int usb_match_one_id(struct usb_interface *interface, if (!usb_match_device(dev, id)) return 0; - /* The interface class, subclass, and protocol should never be + /* The interface class, subclass, protocol and number should never be * checked for a match if the device class is Vendor Specific, * unless the match record specifies the Vendor ID. */ if (dev->descriptor.bDeviceClass == USB_CLASS_VENDOR_SPEC && !(id->match_flags & USB_DEVICE_ID_MATCH_VENDOR) && (id->match_flags & (USB_DEVICE_ID_MATCH_INT_CLASS | USB_DEVICE_ID_MATCH_INT_SUBCLASS | - USB_DEVICE_ID_MATCH_INT_PROTOCOL))) + USB_DEVICE_ID_MATCH_INT_PROTOCOL | + USB_DEVICE_ID_MATCH_INT_NUMBER))) return 0; if ((id->match_flags & USB_DEVICE_ID_MATCH_INT_CLASS) && @@ -644,6 +645,10 @@ int usb_match_one_id(struct usb_interface *interface, (id->bInterfaceProtocol != intf->desc.bInterfaceProtocol)) return 0; + if ((id->match_flags & USB_DEVICE_ID_MATCH_INT_NUMBER) && + (id->bInterfaceNumber != intf->desc.bInterfaceNumber)) + return 0; + return 1; } EXPORT_SYMBOL_GPL(usb_match_one_id); |