From: Dmitry Torokhov <dmitry.torokhov@gmail.com>
Date: Mon, 22 Aug 2011 16:45:39 +0000 (-0700)
Subject: Input: ad714x - use DMA-safe buffers for spi_write()
X-Git-Tag: v3.1-rc4~48^2~1
X-Git-Url: http://git.openpandora.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=c0409feb86893f5ccf73964c7b2b47ca64bdb014;p=pandora-kernel.git

Input: ad714x - use DMA-safe buffers for spi_write()

spi_write() requires use of DMA-safe (cacheline aligned) buffers.
Also use the same buffers when reading data since to avoid extra
locking and potential memory allocation in spi_write_then_read().

Acked-by: Michael Hennerich <michael.hennerich@analog.com>
Signed-off-by: Dmitry Torokhov <dtor@mail.ru>
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