Commit a5a18bdf authored by Kristian Evensen's avatar Kristian Evensen Committed by David S. Miller
Browse files

rndis_host: Set valid random MAC on buggy devices

Some devices of the same type all export the same, random MAC address. This
behavior has been seen on the ZTE MF910, MF823 and MF831, and there are
probably more devices out there. Fix this by generating a valid random MAC
address if we read a random MAC from device.

Also, changed the memcpy() to ether_addr_copy(), as pointed out by
Suggested-by: default avatarBjørn Mork <>
Signed-off-by: default avatarKristian Evensen <>
Signed-off-by: default avatarDavid S. Miller <>
parent 43de8746
......@@ -428,7 +428,11 @@ generic_rndis_bind(struct usbnet *dev, struct usb_interface *intf, int flags)
dev_err(&intf->dev, "rndis get ethaddr, %d\n", retval);
goto halt_fail_and_release;
memcpy(net->dev_addr, bp, ETH_ALEN);
if (bp[0] & 0x02)
ether_addr_copy(net->dev_addr, bp);
/* set a nonzero filter to enable data transfers */
memset(u.set, 0, sizeof *u.set);
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