[i2c] [PATCH 4/7] gpiolib: implement dev_gpiochip_{add, remove} calls

Grant Likely grant.likely at secretlab.ca
Wed Oct 22 06:20:22 CEST 2008


On Wed, Oct 22, 2008 at 01:28:17PM +1100, Benjamin Herrenschmidt wrote:
> On Wed, 2008-10-22 at 05:42 +0400, Anton Vorontsov wrote:
> > 
> > Thinking about it more, I started recalling other issues. The bus
> > notifier chain doesn't replay previous events, so we also have to
> > register the notifier before the _devices_ are registered. And this
> > ruins the whole approach. :-/ Yeah, that's why I abandoned the bus
> > notifier idea.
> 
> The notifier can be registered before the devices, though it's a little
> bit fishy and fragile.
> 
> Easier I suppose to just have OF specific hooks in the bus code.

Every time I think about the problem, this is the conclusion that I come
to.  Either have OF specific hooks in the probe/remove functions; or
have separate probe/remove for OF created instances of a device.

g.



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