From: Thierry Reding <treding@nvidia.com>
Date: Fri, 14 Mar 2014 13:15:10 +0000 (+0100)
Subject: drm/tegra: dsi - Add enable guard
X-Git-Tag: omap-for-v3.16/fixes-against-rc1~44^2~9^2~28
X-Git-Url: http://git.openpandora.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=334ae6b5271b7ba306b867d1d2b1b00e4afd6eb5;p=pandora-kernel.git

drm/tegra: dsi - Add enable guard

To prevent the enable or disable operations to potentially be run
multiple times, add guards to return early when the output is already
in the targetted state.

Signed-off-by: Thierry Reding <treding@nvidia.com>
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