diff options
Diffstat (limited to 'drivers/net/usb/qmi_wwan.c')
| -rw-r--r-- | drivers/net/usb/qmi_wwan.c | 12 |
1 files changed, 12 insertions, 0 deletions
diff --git a/drivers/net/usb/qmi_wwan.c b/drivers/net/usb/qmi_wwan.c index 1aad0568dcc6..2f828eb9ace6 100644 --- a/drivers/net/usb/qmi_wwan.c +++ b/drivers/net/usb/qmi_wwan.c @@ -1338,6 +1338,18 @@ static int qmi_wwan_probe(struct usb_interface *intf, id->driver_info = (unsigned long)&qmi_wwan_info; } + /* There are devices where the same interface number can be + * configured as different functions. We should only bind to + * vendor specific functions when matching on interface number + */ + if (id->match_flags & USB_DEVICE_ID_MATCH_INT_NUMBER && + desc->bInterfaceClass != USB_CLASS_VENDOR_SPEC) { + dev_dbg(&intf->dev, + "Rejecting interface number match for class %02x\n", + desc->bInterfaceClass); + return -ENODEV; + } + /* Quectel EC20 quirk where we've QMI on interface 4 instead of 0 */ if (quectel_ec20_detected(intf) && desc->bInterfaceNumber == 0) { dev_dbg(&intf->dev, "Quectel EC20 quirk, skipping interface 0\n"); |