From 29b085e1658d4584a1355909804a26e9e0055dae Mon Sep 17 00:00:00 2001 From: =?utf8?q?Bj=C3=B8rn=20Mork?= Date: Thu, 17 Dec 2015 12:44:04 +0100 Subject: [PATCH] net: qmi_wwan: ignore bogus CDC Union descriptors MIME-Version: 1.0 Content-Type: text/plain; charset=utf8 Content-Transfer-Encoding: 8bit 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 --- drivers/net/usb/qmi_wwan.c | 5 ++++- 1 file changed, 4 insertions(+), 1 deletion(-) diff --git a/drivers/net/usb/qmi_wwan.c b/drivers/net/usb/qmi_wwan.c index babc84a3946c2..d0b29733c021f 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; } } -- 2.39.5