From: Guennadi Liakhovetski <g.liakhovetski@gmx.de>
Date: Thu, 6 Jun 2013 14:35:44 +0000 (+0200)
Subject: mmc: tmio: fix unbalanced power-on calls with clock-gating enabled
X-Git-Tag: v3.11-rc1~50^2~62
X-Git-Url: http://git.openpandora.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=e83b7a8acc420923cbe8a30901d9eb60677f54fb;p=pandora-kernel.git

mmc: tmio: fix unbalanced power-on calls with clock-gating enabled

With MMC clock gating enabled the MMC core currently calls MMC host driver's
.set_ios() method with .power_mode == MMC_POWER_ON and the clock value set
either to 0 or to the target rate. The tmio MMC driver then wrongly
translates the latter calls to card slot power-on requests, even when the
slot already was on. This patch fixes the driver to avoid needlessly
incrementing power-supplying regulator's use count.

Signed-off-by: Guennadi Liakhovetski <g.liakhovetski+renesas@gmail.com>
Tested-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
Signed-off-by: Chris Ball <cjb@laptop.org>
---

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