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path: root/drivers/net/usb/cdc_ncm.c
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Diffstat (limited to 'drivers/net/usb/cdc_ncm.c')
-rw-r--r--drivers/net/usb/cdc_ncm.c22
1 files changed, 18 insertions, 4 deletions
diff --git a/drivers/net/usb/cdc_ncm.c b/drivers/net/usb/cdc_ncm.c
index ddc7b8880f60..d38bc20a60e2 100644
--- a/drivers/net/usb/cdc_ncm.c
+++ b/drivers/net/usb/cdc_ncm.c
@@ -440,10 +440,12 @@ advance:
((!ctx->mbim_desc) && ((ctx->ether_desc == NULL) || (ctx->control != intf))))
goto error;
- /* claim interfaces, if any */
- temp = usb_driver_claim_interface(driver, ctx->data, dev);
- if (temp)
- goto error;
+ /* claim data interface, if different from control */
+ if (ctx->data != ctx->control) {
+ temp = usb_driver_claim_interface(driver, ctx->data, dev);
+ if (temp)
+ goto error;
+ }
iface_no = ctx->data->cur_altsetting->desc.bInterfaceNumber;
@@ -519,6 +521,10 @@ void cdc_ncm_unbind(struct usbnet *dev, struct usb_interface *intf)
tasklet_kill(&ctx->bh);
+ /* handle devices with combined control and data interface */
+ if (ctx->control == ctx->data)
+ ctx->data = NULL;
+
/* disconnect master --> disconnect slave */
if (intf == ctx->control && ctx->data) {
usb_set_intfdata(ctx->data, NULL);
@@ -1186,6 +1192,14 @@ static const struct usb_device_id cdc_devs[] = {
.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,
+ },
+ { USB_VENDOR_AND_INTERFACE_INFO(0x12d1, 0xff, 0x02, 0x46),
+ .driver_info = (unsigned long)&wwan_info,
+ },
+
/* Generic CDC-NCM devices */
{ USB_INTERFACE_INFO(USB_CLASS_COMM,
USB_CDC_SUBCLASS_NCM, USB_CDC_PROTO_NONE),