Re: [PATCH 1/3] of: Add prefix parameter to of_modalias_node().

[David Daney <ddaney.cavm@gmail.com>]

On 05/22/2012 01:09 PM, Grant Likely wrote:
> On Tue, May 22, 2012 at 1:45 PM, David Daney<ddaney.cavm@gmail.com>  wrote:
> > On 05/19/2012 11:08 PM, Grant Likely wrote:
> > > On Sat, 19 May 2012 23:54:36 -0600, Grant
> > > Likely<grant.likely@secretlab.ca>    wrote:
> > > > On Fri, 11 May 2012 15:05:21 -0700, David Daney<ddaney.cavm@gmail.com>
> > > >   wrote:
> > > > > From: David Daney<david.daney@cavium.com>
> > > > >
> > > > > When generating MODALIASes, it is convenient to add things like "spi:"
> > > > > or "i2c:" to the front of the strings.  This allows the standard
> > > > > modprobe to find the right driver when automatically populating bus
> > > > > children from the device tree structure.
> > > > >
> > > > > Add a prefix parameter, and adjust callers.  For
> > > > > of_register_spi_devices() use the "spi:" prefix.
> > > > >
> > > > > Signed-off-by: David Daney<david.daney@cavium.com>
> > > >
> > > > Applied, thanks.  Some notes below...
> > >
> > > Wait... why is this necessary?
> >
> > Because in of_register_spi_devices() in of_spi.c, you do:
> >
> >         request_module(spi->modalias);
> >
> > The string passed to request_module() must have the "spi:" prefix.
> How about modifying the call to request_module() to include the prefix
> also?  I think that would be a simpler change overall.  Would that
> work?
It seems to.  I just sent such a patch in a new thread.

David Daney