From: Mark Brown <broonie@linaro.org>
Date: Sat, 29 Mar 2014 23:48:07 +0000 (+0000)
Subject: spi: Fix handling of cs_change in core implementation
X-Git-Tag: v3.15-rc1~147^2~10^2
X-Git-Url: http://git.openpandora.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=0b73aa63c193006c3d503d4903dd4792a26e1d50;p=pandora-kernel.git

spi: Fix handling of cs_change in core implementation

The core implementation of cs_change didn't follow the documentation
which says that cs_change in the middle of the transfer means to briefly
deassert chip select, instead it followed buggy drivers which change the
polarity of chip select.  Use a delay of 10us between deassert and
reassert simply from pulling numbers out of a hat.

Reported-by: Gerhard Sittig <gsi@denx.de>
Signed-off-by: Mark Brown <broonie@linaro.org>
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