From bfdad565ae0a61ac943974b8ae61ec0ed55ceb04 Mon Sep 17 00:00:00 2001
From: =?utf8?q?Simon=20K=C3=A5gstr=C3=B6m?= <simon.kagstrom@netinsight.net>
Date: Mon, 17 Mar 2014 14:42:35 +0100
Subject: [PATCH] ARM: ixp4xx: Make dma_set_coherent_mask common, correct
 implementation

Non-PCI devices can use the entire 32-bit range, PCI dittos are
limited to the first 64MiB.

Also actually setup coherent_dma_mask.

The patch has been verified on a board with 128MiB memory, one
ipx4xx_eth device and a e100 PCI device.

Signed-off-by: Simon Kagstrom <simon.kagstrom@netinsight.net>
Signed-off-by: Arnd Bergmann <arnd@arndb.de>
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