From: govindarajulu.v <govindarajulu90@gmail.com>
Date: Wed, 4 Sep 2013 05:47:16 +0000 (+0530)
Subject: driver/net: enic: Try DMA 64 first, then failover to DMA
X-Git-Tag: v3.12-rc1~132^2~13^2~2
X-Git-Url: http://git.openpandora.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=624dbf55a359b1d8e335c046d4e57393e7d1916d;p=pandora-kernel.git

driver/net: enic: Try DMA 64 first, then failover to DMA

In servers with more than 1.1 TB of RAM, the existing 40/32 bit DMA
could cause failure as the DMA-able address could go outside the range
addressable using 40/32 bits.

The following patch first tried 64 bit DMA if possible, failover to 32
bit.

Signed-off-by: Sujith Sankar <ssujith@cisco.com>
Signed-off-by: Christian Benvenuti <benve@cisco.com>
Signed-off-by: Govindarajulu Varadarajan <govindarajulu90@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
---

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