tree d9002cf7a4c4af8c3cf132708bacb1f137dc7977
parent 6645161513b90823ddc787f5763d8dbea7d40c8c
author Ming Lei <ming.lei@canonical.com> 1379941175 +0800
committer David S. Miller <davem@davemloft.net> 1380397369 -0400

USBNET: fix handling padding packet

Commit 638c5115a7949(USBNET: support DMA SG) introduces DMA SG
if the usb host controller is capable of building packet from
discontinuous buffers, but missed handling padding packet when
building DMA SG.

This patch attachs the pre-allocated padding packet at the
end of the sg list, so padding packet can be sent to device
if drivers require that.

Reported-by: David Laight <David.Laight@aculab.com>
Acked-by: Oliver Neukum <oliver@neukum.org>
Signed-off-by: Ming Lei <ming.lei@canonical.com>
Signed-off-by: David S. Miller <davem@davemloft.net>