Re: [PATCH] usb: storage: Add ums-cros-aoa driver

From: Greg KH
Date: Mon Sep 02 2019 - 12:47:30 EST

On Fri, Aug 30, 2019 at 01:43:36PM -0400, Alan Stern wrote:
> > I could instead add a new sysfs node 'force_bind' to the driver core,
> > that would work like 'bind' except for skipping the
> > driver_match_device() call entirely and forcing a probe(). Do you
> > think that would be acceptable? Or is that too big of a hammer to make
> > available for all drivers in Linux? Maybe if I do the same thing but
> > only for usb drivers, or even only for the usb-storage driver
> > specifically, would that be acceptable?
> This is a question for Greg. The problem is that there may be drivers
> which can't handle being probed for devices they don't match.
> Still, we ought to have a mechanism for doing manual but not automatic
> matches.
> Greg, any thoughts?

This should work just fine today. Add a new device id to the "new_id"
file and then tell the driver to bind. That's pretty much the same as a
"force_bind", right?


greg k-h