# Re: \[PATCH 1/6\] i2c: bcm-kona: register with subsys\_initcall

- From: Matt Porter \<hidden\>
- Date: 2014-02-05 15:18:35 
- List: linux-devicetree
- Page: https://ratatoskr.run/linux-devicetree/2014/02/4192833
- Thread: https://ratatoskr.run/linux-devicetree/2014/02/4191685/t.md

```text
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.

-Matt
```