linux-kernel - Re: [PATCH] Add STMicroelectronics LPS001WP pressure sensor device driver into misc

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Message-Id: <201103142136.43566.arnd@arndb.de>
Date:	Mon, 14 Mar 2011 21:36:43 +0100
From:	Arnd Bergmann <arnd@...db.de>
To:	Jean Delvare <khali@...ux-fr.org>
Cc:	Jonathan Cameron <jic23@....ac.uk>,
	mems applications <mems.applications@...com>,
	rdunlap@...otime.net, carmine.iascone@...com, matteo.dameno@...com,
	rubini@...vis.unipv.it, linux-doc@...r.kernel.org,
	linux-kernel@...r.kernel.org,
	Guenter Roeck <guenter.roeck@...csson.com>
Subject: Re: [PATCH] Add STMicroelectronics LPS001WP pressure sensor device driver into misc

On Monday 14 March 2011 21:18:09 Jean Delvare wrote:
> Jonathan is correct. Pressure sensors are not hardware monitoring
> devices, their drivers have nothing to do in drivers/hwmon. This is
> something for drivers/misc or staging/iio.

I generally try to prevent people from adding more ad-hoc interfaces
to drivers/misc. Anything that is called a drivers/misc driver to me
must qualify as "there can't possibly be a second driver with the
same semantics", otherwise it should be part of another subsystem
with clear rules, or be put into its own file system.

While it seems that right now everyone is just trying to keep move
the driver to some other subsystem, I think it's worth noting that
it is indeed a useful thing to have the driver, I'm optimistic
that we can find some place for it. ;-)

Now how about the IIO stuff? This is the first time I've even
heard about it. Does it have any major disadvantages besides
being staging-quality?

	Arnd
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