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-rw-r--r--drivers/usb/class/cdc-wdm.c16
1 files changed, 16 insertions, 0 deletions
diff --git a/drivers/usb/class/cdc-wdm.c b/drivers/usb/class/cdc-wdm.c
index c154d4f1d67..23cf9d38eb5 100644
--- a/drivers/usb/class/cdc-wdm.c
+++ b/drivers/usb/class/cdc-wdm.c
@@ -31,6 +31,8 @@
#define DRIVER_AUTHOR "Oliver Neukum"
#define DRIVER_DESC "USB Abstract Control Model driver for USB WCM Device Management"
+#define HUAWEI_VENDOR_ID 0x12D1
+
static const struct usb_device_id wdm_ids[] = {
{
.match_flags = USB_DEVICE_ID_MATCH_INT_CLASS |
@@ -38,6 +40,20 @@ static const struct usb_device_id wdm_ids[] = {
.bInterfaceClass = USB_CLASS_COMM,
.bInterfaceSubClass = USB_CDC_SUBCLASS_DMM
},
+ {
+ /*
+ * Huawei E392, E398 and possibly other Qualcomm based modems
+ * embed the Qualcomm QMI protocol inside CDC on CDC ECM like
+ * control interfaces. Userspace access to this is required
+ * to configure the accompanying data interface
+ */
+ .match_flags = USB_DEVICE_ID_MATCH_VENDOR |
+ USB_DEVICE_ID_MATCH_INT_INFO,
+ .idVendor = HUAWEI_VENDOR_ID,
+ .bInterfaceClass = USB_CLASS_VENDOR_SPEC,
+ .bInterfaceSubClass = 1,
+ .bInterfaceProtocol = 9, /* NOTE: CDC ECM control interface! */
+ },
{ }
};