From: Eric Dumazet <eric.dumazet@gmail.com>
Date: Wed, 17 Jun 2009 21:17:59 +0000 (+0000)
Subject: forcedeth: fix dma api mismatches
X-Git-Tag: v2.6.31-rc1~140^2~2
X-Git-Url: http://git.openpandora.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=73a370795371e41f72aeca61656d47adeadf28e5;p=pandora-kernel.git

forcedeth: fix dma api mismatches

forcedeth doesnt use properly dma api in its tx completion path
and in nv_loopback_test()

pci_map_single() should be paired with pci_unmap_single()
pci_map_page() should be paired with pci_unmap_page()

forcedeth xmit path uses pci_map_single() & pci_map_page(),
but tx completion path only uses pci_unmap_single()

nv_loopback_test() uses pci_map_single() & pci_unmap_page()

Add a dma_single field in struct nv_skb_map, and
define a helper function nv_unmap_txskb

Signed-off-by: Eric Dumazet <eric.dumazet@gmail.com>
CC: Ayaz Abdulla <aabdulla@nvidia.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
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