From: Alexander Stein <alexander.stein@systec-electronic.com>
Date: Thu, 5 May 2011 15:40:14 +0000 (-0700)
Subject: Input: ads7846 - make transfer buffers DMA safe
X-Git-Tag: v2.6.39~41^2~1
X-Git-Url: http://git.openpandora.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=1dbe7dada2d03d1313183d439068f1f951a91244;p=pandora-kernel.git

Input: ads7846 - make transfer buffers DMA safe

req.sample needs its own cacheline otherwise accessing req.msg fetches
it in again.

Note: This effect doesn't occur if the underlying SPI driver doesn't use
DMA at all.

Signed-off-by: Alexander Stein <alexander.stein@systec-electronic.com>
Acked-by: Jonathan Cameron <jic23@cam.ac.uk>
Signed-off-by: Dmitry Torokhov <dtor@mail.ru>
---

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