From: Yan Burman <yanb@mellanox.com>
Date: Tue, 11 Mar 2014 12:41:47 +0000 (+0200)
Subject: IB/mad: Check and handle potential DMA mapping errors
X-Git-Tag: v3.15-rc1~103^2^5~2
X-Git-Url: http://git.openpandora.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=2c34e68f426151bc6d16de6a187678f6693c0770;p=pandora-kernel.git

IB/mad: Check and handle potential DMA mapping errors

Running with DMA_API_DEBUG enabled and not checking for DMA mapping
errors triggers a kernel stack trace with "DMA-API: device driver
failed to check map error" message.  Add these checks to the MAD
module, both to be be more robust and also eliminate these
false-positive stack traces.

Signed-off-by: Yan Burman <yanb@mellanox.com>
Signed-off-by: Or Gerlitz <ogerlitz@mellanox.com>
Signed-off-by: Roland Dreier <roland@purestorage.com>
---

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