[PATCH v5 2/6] ASoC: dwc: Prepare clock before use

[Mark Brown]

On Tue, Dec 30, 2014 at 10:55:44AM +0000, Andrew Jackson wrote:
> From: Andrew Jackson <Andrew.Jackson at arm.com>
> 
> Some I2S clocks may require some time to get the clock ready
> for operation and so need to be prepared before they are enabled.
> So, prepare the clock as well as enabling it, but combine the
> two through clk_prepare_enable.

Applied, though the changelog is inaccurate - the need to do things
outside of hardirq context is the reason the common clock API has a
prepare stage but it's just a flat out requirement of the common clock
API to prepare clocks.
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