From: Stephen Warren <swarren@wwwdotorg.org>
Date: Wed, 27 Mar 2013 02:37:57 +0000 (-0600)
Subject: spi: add ability to validate xfer->bits_per_word in SPI core
X-Git-Tag: omap-for-v3.10/dt-fixes-for-merge-window~130^2~53
X-Git-Url: http://git.openpandora.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=543bb255a1987836e64f5b7a63664ead8b32b042;p=pandora-kernel.git

spi: add ability to validate xfer->bits_per_word in SPI core

Allow SPI masters to define the set of bits_per_word values they support.
If they do this, then the SPI core will reject transfers that attempt to
use an unsupported bits_per_word value. This eliminates the need for each
SPI driver to implement this checking in most cases.

Signed-off-by: Stephen Warren <swarren@wwwdotorg.org>
Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com>
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