Re: [PATCH 1/6] i2c: bcm-kona: register with subsys_initcall

From: Alan Stern
Date: Wed Feb 05 2014 - 10:30:39 EST


On Wed, 5 Feb 2014, Matt Porter wrote:

> On Wed, Feb 05, 2014 at 10:08:18AM +0100, Wolfram Sang wrote:
> > On Tue, Feb 04, 2014 at 07:19:07AM -0500, Matt Porter wrote:
> >
> > > Voltage regulators are needed very early due to deferred probe
> > > being incompatible with built-in USB gadget drivers.
> >
> > What does it need to fix those instead?
>
> [added Alan/Felipe for more insight]
>
> Discussion on that topic came about from this submission:
> http://www.spinics.net/lists/linux-usb/msg94217.html
>
> End of it is:
> http://www.spinics.net/lists/linux-usb/msg94731.html
>
> We can either add to the many drivers that already do subsys_initcall()
> for similar reasons...or I can drop this from the series and add gadget
> probe ordering to my TODO list.
>
> In short, it can't be a late_initcall() hack like the original post and
> really could be solved by converting to a real bus (and letting
> deferred probe do its job)..but Alan voiced concerns about that.

Don't worry too much about what I said. If adding a "gadget" bus will
solve the problem in an appropriate way, and if nobody else objects
(particularly Felipe, who is on vacation now), then go for it.

Alan Stern

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