[PATCH 0/6] irqchip: Hybrid probing

Rob Herring robh at kernel.org
Tue Sep 15 17:13:54 EDT 2020

On Sat, Sep 12, 2020 at 01:51:42PM +0100, Marc Zyngier wrote:
> A recent attempt at converting a couple of interrupt controllers from
> early probing to standard platform drivers have badly failed, as it
> became evident that although an interrupt controller can easily probe
> late, device drivers for the endpoints connected to it are rarely
> equipped to deal with probe deferral. Changes were swiftly reverted.
> However, there is some value in *optionally* enabling this, if only
> for development purposes, as there is otherwise a "chicken and egg"
> problem, and a few people (cc'd) are working on a potential solution.
> This short series enables the infrastructure for modular building
> whilst retaining the usual early probing for monolithic build, and
> introduces it to the three drivers that were previously made to probe
> as platform drivers.

I hardly expected more OF_DECLARE macros when I opened this up. Given 
desires to get rid of them, I don't think adding to it is the way 
forward. That wrapping a platform driver around OF_DECLARE looks pretty 
horrible IMO. 

I browsed some of the discussion around this. It didn't seem like it's 
a large number of drivers that have to be fixed to defer probe 
correctly. Am I missing something?

I'd rather keep the pressure on getting fw_devlink on by default.


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