From: Dmitry Torokhov <dmitry.torokhov@gmail.com>
Date: Thu, 9 Oct 2008 04:52:23 +0000 (-0400)
Subject: Input: ads7846 - fix cache line sharing issue
X-Git-Tag: v2.6.28-rc1~289^2^2~3
X-Git-Url: http://git.openpandora.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=e8f462d202026d8e99f553ed5a09422321226ac9;p=pandora-kernel.git

Input: ads7846 - fix cache line sharing issue

We had a report a while back that the ads7846 driver had some issues
when used with DMA-based SPI controllers (like atmel_spi) on systems
where main memory is not DMA-coherent (most non-x86 boards). Allocate
memory potentially used for DMA separately to avoid cache line issues.

Reported-by: David Brownell <dbrownell@users.sourceforge.net>
Signed-off-by: Dmitry Torokhov <dtor@mail.ru>
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