From: Dong Aisheng <dong.aisheng@linaro.org>
Date: Fri, 20 Jul 2012 09:20:24 +0000 (+0800)
Subject: ASoC: mxs-saif: fix clock prepare and enable unbalance issue
X-Git-Tag: v3.6-rc2~34^2^2~13
X-Git-Url: http://git.openpandora.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=c2e1d9073fc98f471067c0257a31b4818306ebe1;p=pandora-kernel.git

ASoC: mxs-saif: fix clock prepare and enable unbalance issue

Currently we directly call a clock_enable in trigger function without
a clk_prepare as pair first.
This will cause system hang immediately when run capture because
the clock was not prepared(playback does not hang because the clock was
prepared already by get_mclk before), a warning message in clock framework
may cause a deadlock to reclaim clock lock (see: pl011_console_write).

Here we prepare clock first in hw_param, then enable it in trigger
function to guarantee the balance.

Signed-off-by: Dong Aisheng <dong.aisheng@linaro.org>
Acked-by: Shawn Guo <shawn.guo@linaro.org>
Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com>
---

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