From: David Gibson <david@gibson.dropbear.id.au>
Date: Tue, 3 Feb 2015 05:36:23 +0000 (+1100)
Subject: powerpc: Remove arch specific byteswappers from the MXC MMC driver
X-Git-Tag: omap-for-v4.1/fixes-rc1~126^2~58^2~2
X-Git-Url: http://git.openpandora.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=7a8bf874487cc8990857973a789d7161b699389d;p=pandora-kernel.git

powerpc: Remove arch specific byteswappers from the MXC MMC driver

When the MXC MMUC driver is used on a Freescale MPC512x machine, it
contains some additional byteswapping code (I'm assuming this is a
workaround for a hardware defect).  This uses the ppc specific st_le32()
function, but there's no reason not to use the generic swab32() function
instead.  gcc is capable of generating the efficient ppc byte-reversing
load/store instructions without the arch-specific helper.

This patch, therefore, switches to the generic byteswap routine.

Cc: Shawn Guo <shawn.guo@linaro.org>
Cc: Sascha Hauer <kernel@pengutronix.de>

Signed-off-by: David Gibson <david@gibson.dropbear.id.au>
Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
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