[alsa-devel] [PATCH v2] ASoC: SGTL5000: Fix kernel failed while trying to get optional VDDD supply.

[Mark Brown]

On Tue, Dec 03, 2013 at 09:49:47AM +0000, Li Xiubo wrote:

> 2, If the regulator dt node is exist but the optional VDDD is absent (i.e.
> The external VDDD is not used), a -EPROBE_DEFER will be returned, if just
> return the -EPROBE_DEFER to the probe(and then the probe deferral
> mechanism will do the probe again later, is that right ?), and then the
> regulator_get_optional() will be called later again, and the -EPROBE_DEFER
> will be returned again too, and now how should I handle -EPROBE_DEFER error
> twice ? Or should there be a counter about this ? That to say when the
> -EPROBE_DEFER error is the second time returned from regulator_get_optional()
> can we ensure that the optional VDDD is really not in use.

The driver should just defer when it's told to defer, I don't understand
why it would want to count anything?
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