diff options
| author | Bjørn Mork <bjorn@mork.no> | 2012-03-16 14:41:27 (GMT) |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2012-03-16 20:38:45 (GMT) |
| commit | 11207b6fe05438b2e87a26435cd98db3d55e6fa7 (patch) | |
| tree | 920545fa5a3e45d418ad79132932fca2cccf6285 | |
| parent | 5889d3d4209c1050b4a3c96c41faf6c0976a4acf (diff) | |
| download | linux-11207b6fe05438b2e87a26435cd98db3d55e6fa7.tar.xz | |
net: qmi_wwan: add support for ZTE MF820D
ZTE have yet to discover the magic of USB descriptors. These
devices use ff/ff/ff for class/subclass/protocol regardless of
function, except for usb-storage. Use an interface number
whitelist to force the driver to bind only to the QMI/wwan
interface.
Signed-off-by: Bjørn Mork <bjorn@mork.no>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
| -rw-r--r-- | drivers/net/usb/qmi_wwan.c | 34 |
1 files changed, 34 insertions, 0 deletions
diff --git a/drivers/net/usb/qmi_wwan.c b/drivers/net/usb/qmi_wwan.c index e14479d..aac68f5 100644 --- a/drivers/net/usb/qmi_wwan.c +++ b/drivers/net/usb/qmi_wwan.c @@ -214,6 +214,20 @@ static int qmi_wwan_bind_shared(struct usbnet *dev, struct usb_interface *intf) struct usb_driver *subdriver = NULL; atomic_t *pmcount = (void *)&dev->data[1]; + /* ZTE makes devices where the interface descriptors and endpoint + * configurations of two or more interfaces are identical, even + * though the functions are completely different. If set, then + * driver_info->data is a bitmap of acceptable interface numbers + * allowing us to bind to one such interface without binding to + * all of them + */ + if (dev->driver_info->data && + !test_bit(intf->cur_altsetting->desc.bInterfaceNumber, &dev->driver_info->data)) { + dev_info(&intf->dev, "not on our whitelist - ignored"); + rv = -ENODEV; + goto err; + } + atomic_set(pmcount, 0); /* collect all three endpoints */ @@ -341,6 +355,17 @@ static const struct driver_info qmi_wwan_gobi = { .manage_power = qmi_wwan_manage_power, }; +/* ZTE suck at making USB descriptors */ +static const struct driver_info qmi_wwan_force_int4 = { + .description = "Qualcomm Gobi wwan/QMI device", + .flags = FLAG_WWAN, + .bind = qmi_wwan_bind_gobi, + .unbind = qmi_wwan_unbind_shared, + .manage_power = qmi_wwan_manage_power, + .data = BIT(4), /* interface whitelist bitmap */ +}; + + #define HUAWEI_VENDOR_ID 0x12D1 #define QMI_GOBI_DEVICE(vend, prod) \ USB_DEVICE(vend, prod), \ @@ -375,6 +400,15 @@ static const struct usb_device_id products[] = { .bInterfaceProtocol = 0xff, .driver_info = (unsigned long)&qmi_wwan_shared, }, + { /* ZTE MF820D */ + .match_flags = USB_DEVICE_ID_MATCH_DEVICE | USB_DEVICE_ID_MATCH_INT_INFO, + .idVendor = 0x19d2, + .idProduct = 0x0167, + .bInterfaceClass = 0xff, + .bInterfaceSubClass = 0xff, + .bInterfaceProtocol = 0xff, + .driver_info = (unsigned long)&qmi_wwan_force_int4, + }, {QMI_GOBI_DEVICE(0x05c6, 0x9212)}, /* Acer Gobi Modem Device */ {QMI_GOBI_DEVICE(0x03f0, 0x1f1d)}, /* HP un2400 Gobi Modem Device */ {QMI_GOBI_DEVICE(0x03f0, 0x371d)}, /* HP un2430 Mobile Broadband Module */ |