linux-kernel - [PATCH 1/1] net: usb: cdc_ether.c: Make Cinterion module network interfaces show as wwanX.

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Date:	Mon, 25 Jan 2016 14:11:58 +0000
From:	John Ernberg <john.ernberg@...ia.se>
To:	"linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>
CC:	John Ernberg <john.ernberg@...ia.se>
Subject: [PATCH 1/1] net: usb: cdc_ether.c: Make Cinterion module network
 interfaces show as wwanX.

From: John Ernberg <john.ernberg@...ia.se>

This is due to the module listing its interface as subclass 06, ethernet.

usb-devices output:
T:  Bus=01 Lev=01 Prnt=01 Port=00 Cnt=01 Dev#=  5 Spd=480 MxCh= 0
D:  Ver= 2.00 Cls=ef(misc ) Sub=02 Prot=01 MxPS=64 #Cfgs=  1
P:  Vendor=1e2d ProdID=0055 Rev=00.00
S:  Manufacturer=Cinterion
S:  Product=AHx
C:  #Ifs= 6 Cfg#= 1 Atr=e0 MxPwr=10mA
I:  If#= 0 Alt= 0 #EPs= 2 Cls=ff(vend.) Sub=ff Prot=ff Driver=option
I:  If#= 1 Alt= 0 #EPs= 2 Cls=ff(vend.) Sub=ff Prot=ff Driver=option
I:  If#= 2 Alt= 0 #EPs= 2 Cls=ff(vend.) Sub=ff Prot=ff Driver=option
I:  If#= 3 Alt= 0 #EPs= 3 Cls=ff(vend.) Sub=ff Prot=ff Driver=option
I:  If#= 4 Alt= 0 #EPs= 1 Cls=02(commc) Sub=06 Prot=00 Driver=cdc_ether
I:  If#= 5 Alt= 1 #EPs= 2 Cls=0a(data ) Sub=00 Prot=00 Driver=cdc_ether

Signed-off-by: John Ernberg <john.ernberg@...ia.se>
---

Note that this has been tested only with a Cinterion AH3 EVK module.
Please explicitly keep me on CC as I did not register.

 drivers/net/usb/cdc_ether.c | 6 ++++++
 1 file changed, 6 insertions(+)

diff --git a/drivers/net/usb/cdc_ether.c b/drivers/net/usb/cdc_ether.c
index 7cba2c3..a8218a5 100644
--- a/drivers/net/usb/cdc_ether.c
+++ b/drivers/net/usb/cdc_ether.c
@@ -462,6 +462,7 @@ static const struct driver_info wwan_info = {
 #define SAMSUNG_VENDOR_ID	0x04e8
 #define LENOVO_VENDOR_ID	0x17ef
 #define NVIDIA_VENDOR_ID	0x0955
+#define CINTERION_VENDOR_ID	0x1e2d
 
 static const struct usb_device_id	products[] = {
 /* BLACKLIST !!
@@ -707,6 +708,11 @@ static const struct usb_device_id	products[] = {
 			USB_CDC_SUBCLASS_ETHERNET, USB_CDC_PROTO_NONE),
 	.driver_info = (kernel_ulong_t)&wwan_info,
 }, {
+	/* Cinterion modules */
+	USB_VENDOR_AND_INTERFACE_INFO(CINTERION_VENDOR_ID, USB_CLASS_COMM,
+			USB_CDC_SUBCLASS_ETHERNET, USB_CDC_PROTO_NONE),
+	.driver_info = (kernel_ulong_t)&wwan_info,
+}, {
 	USB_INTERFACE_INFO(USB_CLASS_COMM, USB_CDC_SUBCLASS_ETHERNET,
 			USB_CDC_PROTO_NONE),
 	.driver_info = (unsigned long) &cdc_info,
-- 
1.9.1