From mboxrd@z Thu Jan  1 00:00:00 1970
From: dedekind1@gmail.com (Artem Bityutskiy)
Date: Wed, 20 Jul 2011 08:17:45 +0300
Subject: [PATCH v2] mtd: dataflash: add device tree probe support
In-Reply-To: <20110720045547.GA5766@S2100-06.ap.freescale.net>
References: <1310283313-32087-1-git-send-email-shawn.guo@linaro.org>
	<1310658757-17018-1-git-send-email-shawn.guo@linaro.org>
	<20110715025407.GF2927@ponder.secretlab.ca>
	<20110715044919.GB1840@S2100-06.ap.freescale.net>
	<1311136844.20738.131.camel@sauron>
	<20110720045547.GA5766@S2100-06.ap.freescale.net>
Message-ID: <1311139071.20738.147.camel@sauron>
To: linux-arm-kernel@lists.infradead.org
List-Id: linux-arm-kernel.lists.infradead.org

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