tree 5eaea6c250d176f2b2f04cf13a6708f6b495c7d4
parent b5f862180d7011d9575d0499fa37f0f25b423b12
author Bjørn Mork <bjorn@mork.no> 1509979042 +0100
committer David S. Miller <davem@davemloft.net> 1510116121 +0900

net: cdc_ether: fix divide by 0 on bad descriptors

Setting dev->hard_mtu to 0 will cause a divide error in
usbnet_probe. Protect against devices with bogus CDC Ethernet
functional descriptors by ignoring a zero wMaxSegmentSize.

Signed-off-by: Bjørn Mork <bjorn@mork.no>
Acked-by: Oliver Neukum <oneukum@suse.com>
Signed-off-by: David S. Miller <davem@davemloft.net>