Re: Disable bus's drivers_autoprobe before rootfs has mounted

[Alan Stern]

On Wed, 11 Jun 2014, Greg KH wrote:

> We can't break existing systems, so I don't understand the issue here.
> Just don't configure your kernel for a system you don't have / want,
> right?
> 
> > > > From what I read code, we can't implement above feature, but I may
> > > > be wrong, if you have some solutions, give me some hints please.
> > > > If there is no solution for above feature, do we agree with exporting
> > > > .drivers_autoprobe for bus driver or something similar?
> > > 
> > > I don't understand what you mean by this, care to show me with code?
> > 
> > I mean the individual bus driver can't change bus->p->drivers_autoprobe?
> > bus->p->drivers_autoprobe is handled at drivers/base/bus.c.
> > 
> > If the individual bus driver can change bus->p->drivers_autoprobe, we
> > can disable autoprobe (auto-binding) during booting.
> 
> No, that's a core only thing.

Peter, correct me if this is wrong.  It sounds like you want to have a 
way for the user to control which gadget driver gets bound to which UDC 
driver when everything is compiled into the kernel, nothing is built 
as a separate module.  Is that the basic idea?

This shouldn't be a problem if you use configfs or libusbg.

Alan Stern

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