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Re: [PATCH v2 01/12] device: property: delay device-driver matches

From "Rafael J. Wysocki" <rafael@kernel.org>
Newsgroups linux.kernel
Subject Re: [PATCH v2 01/12] device: property: delay device-driver matches
Date 2015-07-17 01:50 +0200
Message-ID <pN14B-4Zo-13@gated-at.bofh.it> (permalink)
References <pHmOu-3uV-15@gated-at.bofh.it> <pHmOv-3uV-51@gated-at.bofh.it> <pMXX4-ws-1@gated-at.bofh.it>
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Hi Mark,

On Thu, Jul 16, 2015 at 10:23 PM, Mark Brown <broonie@kernel.org> wrote:
> On Wed, Jul 01, 2015 at 11:40:56AM +0200, Tomeu Vizoso wrote:
>
>> Delay matches of platform devices 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 dependencies' drivers not
>> having registered yet.
>
> I have to say I'm still not 100% clear that special casing platform
> devices makes sense here - I can see that platform devices are usually
> the first devices to instantiate but there are other kinds of devices
> and it's not obvious what the benefit of specifically picking out
> platform devices as opposed to just deferring all devices is.

Some existing devices cannot be deferred without redesigning things quite a bit.

What I was talking about, though, was to use an opt-in mechanism for
that which could be set for all platform devices, for example, by
default, but it might be set for other bus types too if that's useful.

Thanks,
Rafael
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Re: [PATCH v2 01/12] device: property: delay device-driver matches Mark Brown <broonie@kernel.org> - 2015-07-16 22:30 +0200
  Re: [PATCH v2 01/12] device: property: delay device-driver matches "Rafael J. Wysocki" <rafael@kernel.org> - 2015-07-17 01:50 +0200
    Re: [PATCH v2 01/12] device: property: delay device-driver matches Mark Brown <broonie@kernel.org> - 2015-07-17 02:10 +0200

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