[PATCH v2] mtd: dataflash: add device tree probe support

Artem Bityutskiy dedekind1 at gmail.com
Wed Jul 20 01:17:45 EDT 2011


On Wed, 2011-07-20 at 12:55 +0800, Shawn Guo wrote:
> On Wed, Jul 20, 2011 at 07:40:38AM +0300, Artem Bityutskiy wrote:
> > On Fri, 2011-07-15 at 12:49 +0800, Shawn Guo wrote:
> > > > > +static const struct of_device_id dataflash_dt_ids[] = {
> > > > > +	{ .compatible = "atmel,at45xxx", },
> > > > > +	{ .compatible = "atmel,dataflash", },
> > > > > +	{ /* sentinel */ }
> > > > > +};
> > > > > +
> > > > 
> > > > This should be protected with a #ifdef CONFIG_OF/#else/#endif, and
> > > > there should be a MODULE_DEVICE_TABLE().
> > > > 
> > > I personally hate #ifdef stuff.  But okay, I can do it since there
> > > are people being concerned by this little waste of space.
> > 
> > I guess the question is - will it compile and work if CONFIG_OF is
> > unset?
> > 
> Yes, it will compile, as 'struct of_device_id' is defined in
> include/linux/mod_devicetable.h unconditionally.

And it will work correctly even though dataflash_dt_ids is not NULL, it
will not confuse MTD layer?

-- 
Best Regards,
Artem Bityutskiy




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