From: Bjørn Mork Date: Thu, 17 Dec 2015 11:44:04 +0000 (+0100) Subject: net: qmi_wwan: ignore bogus CDC Union descriptors X-Git-Url: https://git.stricted.de/?a=commitdiff_plain;h=34a55d5e858e81a20d33fd9490149d6a1058be0c;p=GitHub%2Fmoto-9609%2Fandroid_kernel_motorola_exynos9610.git net: qmi_wwan: ignore bogus CDC Union descriptors The CDC descriptors found on these vendor specific functions should not be considered authoritative. They seem to be ignored by drivers for other systems, and the quality is therefore low. One device (1e0e:9001) has been reported to have such a bogus union descriptor on the QMI function, making it fail probing even if the device id was dynamically added. The report was not complete enough to allow adding a device entry for this modem. But this should at least fix the dynamic id probing problem. Reported-by: Kanerva Topi Signed-off-by: Bjørn Mork Signed-off-by: David S. Miller --- diff --git a/drivers/net/usb/qmi_wwan.c b/drivers/net/usb/qmi_wwan.c index babc84a3946c..d0b29733c021 100644 --- a/drivers/net/usb/qmi_wwan.c +++ b/drivers/net/usb/qmi_wwan.c @@ -374,7 +374,10 @@ static int qmi_wwan_bind(struct usbnet *dev, struct usb_interface *intf) "bogus CDC Union: master=%u, slave=%u\n", cdc_union->bMasterInterface0, cdc_union->bSlaveInterface0); - goto err; + + /* ignore and continue... */ + cdc_union = NULL; + info->data = intf; } }