From: Russell King <rmk+kernel@arm.linux.org.uk>
Date: Fri, 25 Apr 2014 11:58:29 +0000 (+0100)
Subject: mmc: sdhci: avoid sync'ing the SG if there's no misalignment
X-Git-Tag: omap-for-v3.16/fixes-against-rc1~65^2~40
X-Git-Url: http://git.openpandora.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=de0b65a786ae83c8f6dfb712f65b9a36af70a981;p=pandora-kernel.git

mmc: sdhci: avoid sync'ing the SG if there's no misalignment

On read, we don't need to sync the whole scatterlist and then check
whether any segments need copying - if we check first, we avoid
potentially expensive cache handling.

Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
Tested-by: Markus Pargmann <mpa@pengutronix.de>
Tested-by: Stephen Warren <swarren@nvidia.com>
Signed-off-by: Ulf Hansson <ulf.hansson@linaro.org>
Signed-off-by: Chris Ball <chris@printf.net>
---

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