linux-kernel - Re: [PATCH v2 4/5] spi: Add OF binding support for SPI busses

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Date:	Fri, 11 Jul 2008 23:21:49 -0600
From:	Grant Likely <grant.likely@...retlab.ca>
To:	Jon Smirl <jonsmirl@...il.com>
Cc:	linuxppc-dev@...abs.org, spi-devel-general@...ts.sourceforge.net,
	linux-kernel@...r.kernel.org, fabrizio.garetto@...il.com,
	david-b@...bell.net
Subject: Re: [PATCH v2 4/5] spi: Add OF binding support for SPI busses

On Wed, Jul 02, 2008 at 11:02:23PM -0400, Jon Smirl wrote:
> On 7/2/08, Grant Likely <grant.likely@...retlab.ca> wrote:
> > From: Grant Likely <grant.likely@...retlab.ca>
> >
> >  This patch adds support for populating an SPI bus based on data in the
> >  OF device tree.  This is useful for powerpc platforms which use the
> >  device tree instead of discrete code for describing platform layout.
> >
> >  Signed-off-by: Grant Likely <grant.likely@...retlab.ca>
> >  ---
> >  +               /* Select device driver */
> >  +               sprop = of_get_property(nc, "linux,modalias", &len);
> >  +               if (sprop && len > 0)
> >  +                       strncpy(spi->modalias, sprop, KOBJ_NAME_LEN);
> >  +               else
> >  +                       strncpy(spi->modalias, "spidev", KOBJ_NAME_LEN);
> 
> You're missing a request_module("%s", info.type) to make sure the
> module is loaded.
> 
> It might make sense to share code with of_find_i2c_driver() so we have
> a common way of guessing module names.

You're right.  I've refactored the i2c code to make it usable by SPI
also.  I'll post the new patch series this evening.

g.
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