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From: Mark Brown <broonie@opensource.wolfsonmicro.com>
To: Jonathan Cameron <jic23@kernel.org>
Cc: linux-iio@vger.kernel.org, greg@kroah.com,
	guenter.roeck@ericsson.com, khali@linux-fr.org,
	dmitry.torokhov@gmail.com, alan@lxorguk.ukuu.org.uk,
	arnd@arndb.de, linus.walleij@linaro.org,
	maxime.ripard@free-electrons.com,
	thomas.petazzoni@free-electrons.com, zdevai@gmail.com,
	w.sang@pengutronix.de, marek.vasut@gmail.com,
	Jonathan Cameron <jic23@cam.ac.uk>
Subject: Re: [PATCH 5/5] stargate2: example of map configuration for iio to hwmon example.
Date: Mon, 30 Jan 2012 21:22:54 +0000	[thread overview]
Message-ID: <20120130212253.GC9672@opensource.wolfsonmicro.com> (raw)
In-Reply-To: <4F26FCE2.1030705@kernel.org>

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On Mon, Jan 30, 2012 at 08:26:10PM +0000, Jonathan Cameron wrote:
> On 01/30/2012 07:33 PM, Mark Brown wrote:
> > On Sun, Jan 29, 2012 at 11:46:54AM +0000, Jonathan Cameron wrote:

> >> +static struct iio_map max1363_consumer_map[] = { +	{ +
> >> .adc_channel_label = "AIN1", +		.consumer_dev =
> >> &iio_hwmon_test.dev, +		.consumer_channel = "testchan1",

> > I do think it's better to use dev_name here rather than a struct
> > device pointer - for several of the buses it's not actually
> > possible to get a struct device until a device has been
> > instantiated which isn't helpful for setting up the mappings.

> We allow both.  In cases like this where the dev pointer is explicitly
> available what gain do we get from not using it?

You avoid user confusion from having two ways of doing the same thing
and you save a little complexity in the implementation.  The user
confusion does happen in practice.

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  reply	other threads:[~2012-01-30 21:22 UTC|newest]

Thread overview: 26+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2012-01-29 11:46 [RFC PATCH 0/5 V5] IIO: in kernel pull interfaces Jonathan Cameron
2012-01-29 11:46 ` [PATCH 1/5] staging:iio:core add in kernel interface mapping and getting IIO channels Jonathan Cameron
2012-01-30 20:22   ` Mark Brown
2012-01-30 20:28     ` Jonathan Cameron
2012-02-01 19:58       ` Linus Walleij
2012-02-06 21:30         ` Jonathan Cameron
2012-02-09 18:10   ` Greg KH
2012-02-09 18:34     ` Jonathan Cameron
2012-02-09 18:57       ` Greg KH
2012-02-09 19:15         ` Mark Brown
2012-02-09 19:17           ` Greg KH
2012-02-09 19:20             ` Mark Brown
2012-02-09 21:20               ` Jonathan Cameron
2012-02-10  1:03                 ` Linus Walleij
2012-01-29 11:46 ` [PATCH 2/5] staging:iio: move iio data return types into types.h for use by inkern Jonathan Cameron
2012-01-29 11:46 ` [PATCH 3/5] staging:iio::hwmon interface client driver Jonathan Cameron
2012-01-29 11:46 ` [PATCH 4/5] staging:iio:Documentation in kernel pull description Jonathan Cameron
2012-01-29 11:46 ` [PATCH 5/5] stargate2: example of map configuration for iio to hwmon example Jonathan Cameron
2012-01-30 19:33   ` Mark Brown
2012-01-30 20:26     ` Jonathan Cameron
2012-01-30 21:22       ` Mark Brown [this message]
2012-01-30 21:48         ` Jonathan Cameron
2012-01-31  8:39         ` Linus Walleij
2012-01-31 11:09           ` Mark Brown
2012-01-30 19:28 ` [RFC PATCH 0/5 V5] IIO: in kernel pull interfaces Linus Walleij
  -- strict thread matches above, loose matches on Subject: below --
2011-11-07 15:44 [PATCH 0/5 V4] IIO in kernel interfaces (pull) Jonathan Cameron
2011-11-07 15:44 ` [PATCH 5/5] stargate2: example of map configuration for iio to hwmon example Jonathan Cameron

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