From: Neil Horman <nhorman@tuxdriver.com>
Date: Wed, 31 Jul 2013 13:03:56 +0000 (-0400)
Subject: 8139cp: Add dma_mapping_error checking
X-Git-Tag: v3.2.52~144
X-Git-Url: http://git.openpandora.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=5cacde1a5f5e7c958dd1f2f74fd57fc3bf176784;p=pandora-kernel.git

8139cp: Add dma_mapping_error checking

[ Upstream commits cf3c4c03060b688cbc389ebc5065ebcce5653e96 and
  d06f5187469eee1b2932c02fd093d113cfc60d5e (the latter is a fixup
  from Dave Jones) ]

Self explanitory dma_mapping_error addition to the 8139 driver, based on this:
https://bugzilla.redhat.com/show_bug.cgi?id=947250

It showed several backtraces arising for dma_map_* usage without checking the
return code on the mapping.  Add the check and abort the rx/tx operation if its
failed.  Untested as I have no hardware and the reporter has wandered off, but
seems pretty straightforward.

Signed-off-by: Neil Horman <nhorman@tuxdriver.com>
CC: "David S. Miller" <davem@davemloft.net>
CC: Francois Romieu <romieu@fr.zoreil.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Signed-off-by: Ben Hutchings <ben@decadent.org.uk>
---

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