Signed-off-by: Wei Shuai <cpuwolf@xxxxxxxxx>
---
drivers/net/usb/cdc_ncm.c | 15 +++++++++++++++
1 files changed, 15 insertions(+), 0 deletions(-)
diff --git a/drivers/net/usb/cdc_ncm.c b/drivers/net/usb/cdc_ncm.c
index 71b6e92..9903f79 100644
--- a/drivers/net/usb/cdc_ncm.c
+++ b/drivers/net/usb/cdc_ncm.c
@@ -545,6 +545,7 @@ EXPORT_SYMBOL_GPL(cdc_ncm_unbind);
static int cdc_ncm_bind(struct usbnet *dev, struct usb_interface *intf)
{
int ret;
+ struct usb_device *udev = interface_to_usbdev(intf);
/* The MBIM spec defines a NCM compatible default altsetting,
* which we may have matched:
@@ -572,6 +573,10 @@ static int cdc_ncm_bind(struct usbnet *dev, struct usb_interface *intf)
cdc_ncm_comm_intf_is_mbim(intf->cur_altsetting))
return -ENODEV;
#endif
+ /* this buggy device cannot do ARP */
+ if( (le16_to_cpu(udev->descriptor.idVendor) == 0xAAAA) ) {
+ dev->net->flags |= IFF_NOARP;
+ }
/* NCM data altsetting is always 1 */
ret = cdc_ncm_bind_common(dev, intf, 1);
@@ -1186,6 +1191,16 @@ static const struct usb_device_id cdc_devs[] = {
.driver_info = (unsigned long) &wwan_info,
},
+ /* buggy device cannot send ARP */
+ { .match_flags = USB_DEVICE_ID_MATCH_INT_INFO
+ | USB_DEVICE_ID_MATCH_VENDOR,
+ .idVendor = 0xAAAA,
+ .bInterfaceClass = USB_CLASS_COMM,
+ .bInterfaceSubClass = USB_CDC_SUBCLASS_NCM,
+ .bInterfaceProtocol = USB_CDC_PROTO_NONE,
+ .driver_info = (unsigned long) &wwan_info,
+ },
+
/* Huawei NCM devices disguised as vendor specific */
{ USB_VENDOR_AND_INTERFACE_INFO(0x12d1, 0xff, 0x02, 0x16),
.driver_info = (unsigned long)&wwan_info,
--
1.7.6.5
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