Re: [PATCH v6 21/22] driver core: Start processing deferred probes earlier

[Mark Brown]

On Mon, Oct 05, 2015 at 09:49:38PM -0500, Rob Herring wrote:
> On Mon, Oct 5, 2015 at 6:52 PM, Frank Rowand <frowand.list@xxxxxxxxx> wrote:

> > The purpose of the *_sync initcall levels is to allow the corresponding
> > initcall level to use multiple threads of execution instead of a single
> > thread.  The *_sync level provides a location for a wait for all of the
> > threads at the corresponding init level to complete.  This is better
> > explained in the git log:

> The things I was worried about like clk and regulator disabling are
> actually late_initcall_sync, so maybe late_initcall is fine here after
> all.

> However, looking at other *_initcall_sync users, I'm not so sure they
> are doing the same abuse.

They're trying to run at the point where we've completed deferred
probe processing - in other words, at the sync point.  What they really
want is an additional callback at the point where the syncs have
actually happened.

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