linux-kernel - Re: [PATCH 18/18] spi: (RFC, don't apply) report OF style modalias when probing using DT

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Message-ID: <20150821172931.GK12027@sirena.org.uk>
Date:	Fri, 21 Aug 2015 10:29:31 -0700
From:	Mark Brown <broonie@...nel.org>
To:	Javier Martinez Canillas <javier@....samsung.com>
Cc:	Brian Norris <computersforpeace@...il.com>,
	linux-kernel@...r.kernel.org,
	Javier Martinez Canillas <javier.martinez@...labora.co.uk>,
	linux-spi@...r.kernel.org
Subject: Re: [PATCH 18/18] spi: (RFC, don't apply) report OF style modalias
 when probing using DT

On Fri, Aug 21, 2015 at 01:47:00AM +0200, Javier Martinez Canillas wrote:
> On 08/21/2015 01:25 AM, Mark Brown wrote:
> > On Thu, Aug 20, 2015 at 11:45:09PM +0200, Javier Martinez Canillas wrote:

> >>> IOW, it's labeled as such mostly for safety, since it has quite a few
> >>> distributed dependencies.

> > Are there really only 17 drivers that are missing an explict of_table?
> > That seems like a low number.

> In fact the 17 patches are the combination of the SPI drivers that:

> a) Have a .id_table but not a MODULE_DEVICE_TABLE(spi,...)
> b) Have a .of_match_table but no a MODULE_DEVICE_TABLE(of,...)
> c) Don't have a .of_match_table but have a DT binding document

> Maybe there are more SPI drivers out there that only have a .id_table
> and don't have a .of_match_table nor a DT binding doc. But in that case
> there isn't too much I can do since I've no information that these are
> drivers are actually used in systems booted with OF.

We could at the very least scan through the in tree DTs.  There does
seem to be a substantial overlap between systems that often don't use
modular kernels but could and systems where people are using the I2C
and SPI ID mapping shims.

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