From: Mark Brown <broonie@linaro.org>
Date: Thu, 10 Oct 2013 21:25:23 +0000 (+0100)
Subject: regmap: spi: Handle async writes of only one buffer
X-Git-Tag: omap-for-v3.13/fixes-for-merge-window-take2~17^2~6^2~1
X-Git-Url: http://git.openpandora.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=cd1b9dd0220d3c126b3b61c1f96f0832fc21fc61;p=pandora-kernel.git

regmap: spi: Handle async writes of only one buffer

If the value is zero then assume it has been included in the register data
and don't send anything, minimising the number of interactions with the
hardware.

Signed-off-by: Mark Brown <broonie@linaro.org>
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