From: Tomasz Figa <tomasz.figa@gmail.com>
Date: Sun, 11 Aug 2013 00:33:29 +0000 (+0200)
Subject: spi: s3c64xx: Do not request CS GPIO on subsequent calls to .setup()
X-Git-Tag: v3.12-rc1~192^2~8^2~3
X-Git-Url: http://git.openpandora.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=0149871c428cc8cb44337703ca46a98a6b541b42;p=pandora-kernel.git

spi: s3c64xx: Do not request CS GPIO on subsequent calls to .setup()

Comments in linux/spi/spi.h and observed behavior show that .setup()
callback can be called multiple times without corresponding calls to
.cleanup(), what was incorrectly assumed by spi-s3c64xx driver, leading
to failures trying to request CS GPIO multiple times.

This patch modifies the behavior of spi-s3c64xx driver to request CS
GPIO only on first call to .setup() after last .cleanup().

Signed-off-by: Tomasz Figa <tomasz.figa@gmail.com>
Signed-off-by: Mark Brown <broonie@linaro.org>
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