On Wed, Dec 23, 2015 at 12:48:01PM +0000, Charles Keepax wrote:
> commit 9b8ef9f6b3fc ("ASoC: dapm: Add startup & shutdown for dai_links")
>
> Added support for calling startup on CODEC to CODEC links, however this
> is called with a NULL runtime pointer. There isn't really a sensible way
> to pass a valid runtime pointer to a CODEC to CODEC link at the moment,
> so we need to make the startup function safe for NULL runtimes. This
> patch returns from the Arizona startup function early if there is no
> runtime.
We need a bit more here about why it's safe to just skip this code - it
is actually safe since we're just setting constraints for userspace but
that's not something the reader can tell without looking for more
context.
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