Re: [PATCH v3 01/18] platform: delay OF device-driver matches until late_initcall

[Tomeu Vizoso <tomeu.vizoso-ZGY8ohtN/8qB+jHODAdFcQ@public.gmane.org>]

On 6 August 2015 at 22:19, Rob Herring <robherring2-Re5JQEeQqe8AvxtiuMwx3w@public.gmane.org> wrote:
> On Thu, Aug 6, 2015 at 9:11 AM, Tomeu Vizoso <tomeu.vizoso-ZGY8ohtN/8qB+jHODAdFcQ@public.gmane.org> wrote:
>> Delay matches of platform devices with OF nodes until late_initcall,
>> when we are sure that all built-in drivers have been registered already.
>> This is needed to prevent deferred probes because of some drivers not
>> having registered yet.
>>
>> The reason why only platform devices are delayed is that some other
>> devices are expected to be probed earlier than late_initcall, for
>> example, the system PNP driver needs to probe its devices in
>> fs_initcall.
>>
>> Additionally, only platform devices with OF nodes are delayed because
>> some machines may depend on oter platform devices being registered at
>> specific times.
>
> How do we know that these probes occur before the unused clocks and
> regulators are turned off? Just getting lucky (as is deferred probe)?
> Can we do this one level earlier so we have a level left to do things
> after probe.

Those are already late_initcall_sync so I guess we're fine.

Thanks,

Tomeu

> Rob
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