From cc47d369b51286129aad1735096b1884b8068ad1 Mon Sep 17 00:00:00 2001
From: Sebastian Ott <sebott@linux.vnet.ibm.com>
Date: Mon, 16 Mar 2015 18:49:59 +0100
Subject: [PATCH] infiniband/mlx4: check for mapping error

Since ib_dma_map_single can fail use ib_dma_mapping_error to check
for errors.

Signed-off-by: Sebastian Ott <sebott@linux.vnet.ibm.com>
Acked-by: Jack Morgenstein <jackm@dev.mellanox.co.il>
Signed-off-by: Doug Ledford <dledford@redhat.com>
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Reading git-format-patch failed