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path: root/drivers/net/usb/cdc_ether.c
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Diffstat (limited to 'drivers/net/usb/cdc_ether.c')
-rw-r--r--drivers/net/usb/cdc_ether.c8
1 files changed, 7 insertions, 1 deletions
diff --git a/drivers/net/usb/cdc_ether.c b/drivers/net/usb/cdc_ether.c
index 3da70bf9936a..7cba2c3759df 100644
--- a/drivers/net/usb/cdc_ether.c
+++ b/drivers/net/usb/cdc_ether.c
@@ -160,6 +160,12 @@ int usbnet_generic_cdc_bind(struct usbnet *dev, struct usb_interface *intf)
info->u = header.usb_cdc_union_desc;
info->header = header.usb_cdc_header_desc;
info->ether = header.usb_cdc_ether_desc;
+ if (!info->u) {
+ if (rndis)
+ goto skip;
+ else /* in that case a quirk is mandatory */
+ goto bad_desc;
+ }
/* we need a master/control interface (what we're
* probed with) and a slave/data interface; union
* descriptors sort this all out.
@@ -256,7 +262,7 @@ skip:
goto bad_desc;
}
- } else if (!info->header || !info->u || (!rndis && !info->ether)) {
+ } else if (!info->header || (!rndis && !info->ether)) {
dev_dbg(&intf->dev, "missing cdc %s%s%sdescriptor\n",
info->header ? "" : "header ",
info->u ? "" : "union ",