Re: [PATCH 1/2] clocksource/drivers/ostm: Delay driver registration

[Daniel Lezcano <daniel.lezcano@linaro.org>]

On 30/08/2018 09:54, Geert Uytterhoeven wrote:
> Hi Daniel,
> 
> On Wed, Aug 29, 2018 at 6:26 PM Daniel Lezcano
> <daniel.lezcano@linaro.org> wrote:
>> On 29/08/2018 17:44, Chris Brandt wrote:
>>> On Wednesday, August 29, 2018 1, Daniel Lezcano wrote:
>>>> Can the boot constraints [1] solve this issue instead of the changes you
>>>> are proposing ?
>>>>
>>>> [1] https://lwn.net/Articles/747250/
>>>
>>> Thanks for the suggestion, but...
>>>
>>> I grepped for "boot_constraint" and it shows up nowhere in the current
>>> kernel.
>>>
>>> Also, this article was written Feb 16, 2018, and I can see that the
>>> patch series was still being submitted (V7) as of Feb 23, 2018.
>>
>> Ah ok, fair enough, I thought it was merged. In any case, after thinking
>> about it, it wouldn't have helped.
>>
>> My concern is if we can avoid changing the TIMER_OF_DECLARE because of
>> the boot order, it would be better.
>>
>> Can returning EPROBE_DEFER fix this issue? Or use the 'complex
>> dependencies' [1]?
> 
> *_OF_DECLARE() is not compatible with EPROBE_DEFER, which causes
> issues with complex dependencies.

What causes issues ? Add support for EPROBE_DEFER with OF_DECLARE or not
having support of it ?

> That's exactly why many subsystems are moving away from it.
> E.g. IOMMU_OF_DECLARE was removed in v4.19-rc1.

Ok, thanks for information.


-- 
 <http://www.linaro.org/> Linaro.org │ Open source software for ARM SoCs

Follow Linaro:  <http://www.facebook.com/pages/Linaro> Facebook |
<http://twitter.com/#!/linaroorg> Twitter |
<http://www.linaro.org/linaro-blog/> Blog