tree ee769da432c32e72d92fabde28cb6a71bb36ff02
parent 3cf92222a39cc7842c373dd90a0c204fa7d7cced
author Marcin Wojtas <mw@semihalf.com> 1449152449 +0100
committer David S. Miller <davem@davemloft.net> 1449259273 -0500

net: mvpp2: fix missing DMA region unmap in egress processing

The Tx descriptor release code currently calls dma_unmap_single() and
dev_kfree_skb_any() if the descriptor is associated with a non-NULL skb.
This condition is true only for the last fragment of the packet.

Since every descriptor's buffer is DMA-mapped it has to be properly
unmapped.

Signed-off-by: Marcin Wojtas <mw@semihalf.com>

Fixes: 3f518509dedc ("ethernet: Add new driver for Marvell Armada 375
network unit")

Cc: <stable@vger.kernel.org> # v3.18+
Signed-off-by: David S. Miller <davem@davemloft.net>