[PATCH v2 1/2] ASoC: kirkwood: clk: probe defer when clock not yet ready

On Sat, Sep 21, 2013 at 11:47:34AM +0100, Russell King - ARM Linux wrote:

Another comment.  This is broken - it will never fall through if a
'dev' is given, because of_clk_get_by_name() will always return an
-EPROBE_DEFER error pointer in that case.

So this approach is unworkable.

And another comment:

This whole approach is broken - while Mark is correct that we should
find a way to return -EPROBE_DEFER if a clock is specified, the solution
here does not allow that - it will return -EPROBE_DEFER whenever the
clock is not found _or_ is not specified.

This has the effect of making the external clock *non*optional for the
kirkwood-i2s driver, which is also completely broken.