linux-kernel - Re: [PATCH] spi: erase pointer to drvdata on removal

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Date:	Mon, 14 Jan 2013 20:11:28 +0000
From:	Grant Likely <grant.likely@...retlab.ca>
To:	Mark Brown <broonie@...nsource.wolfsonmicro.com>,
	Vivien Didelot <vivien.didelot@...oirfairelinux.com>
Cc:	spi-devel-general@...ts.sourceforge.net,
	linux-kernel@...r.kernel.org
Subject: Re: [PATCH] spi: erase pointer to drvdata on removal

On Mon, 14 Jan 2013 02:51:45 +0000, Mark Brown <broonie@...nsource.wolfsonmicro.com> wrote:
> On Thu, Nov 01, 2012 at 02:05:36PM -0400, Vivien Didelot wrote:
> > As for i2c-core, let the SPI core handle the removal of the device's
> > drvdata, after a remove() or a probe() failure.
> 
> Any driver that notices this change is buggy, the driver shouldn't
> use a drvdata value that it didn't set.  I had thought this stuff had
> all been removed from I2C and either dropped or factored out into the
> driver core...

Looks to me like __device_release_driver() in drivers/base/dd.c already
does this.

g.


-- 
Grant Likely, B.Sc, P.Eng.
Secret Lab Technologies, Ltd.
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