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SubjectRe: [RFC][PATCH] add driver matching priorities
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On Friday 28 January 2005 18:33, Adam Belay wrote:
> On Fri, 2005-01-28 at 18:23 -0500, Dmitry Torokhov wrote:
> > On Friday 28 January 2005 17:30, Adam Belay wrote:
> > > Of course this patch is not going to be effective alone. We also need
> > > to change the init order. If a driver is registered early but isn't the
> > > best available, it will be bound to the device prematurely. This would
> > > be a problem for carbus (yenta) bridges.
> > >
> > > I think we may have to load all in kernel drivers first, and then begin
> > > matching them to hardware. Do you agree? If so, I'd be happy to make a
> > > patch for that too.
> > >
> >
> > I disagree. The driver core should automatically unbind generic driver
> > from a device when native driver gets loaded. I think the only change is
> > that we can no longer skip devices that are bound to a driver and match
> > them all over again when a new driver is loaded.
> >
>
> That's another option. My concern is that if a generic driver pokes
> around with hardware, it may fail to initialize properly when the actual
> driver is loaded. There are other problems too. If the system were to
> be suspended while the generic driver was loaded, the restore_state code
> may be incorrect, also rendering the device unusable.
>

If generic driver binds to a device that is has no idea how to drive
_at all_ then I will argue that the generic driver is broken. It should
not bind to begin with.

--
Dmitry
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