Re: [PATCH 1/3] iio: core: Add devm_ APIs for iio_channel_{get,release}

From	Laxman Dewangan <ldewangan@nvidia.com>
Newsgroups	linux.kernel
Subject	Re: [PATCH 1/3] iio: core: Add devm_ APIs for iio_channel_{get,release}
Date	2016-04-06 17:20 +0200
Message-ID	<rkXpn-5RF-1@gated-at.bofh.it> (permalink)
References	<rkTc5-2vd-9@gated-at.bofh.it> <rkW0h-4AR-11@gated-at.bofh.it>
Organization	linux.* mail to news gateway

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Hi Daniel,


On Wednesday 06 April 2016 07:19 PM, Daniel Baluta wrote:
> On Wed, Apr 6, 2016 at 1:31 PM, Laxman Dewangan <ldewangan@nvidia.com> wrote:
>> Some of kernel driver uses the IIO framework to get the sensor
>> value via ADC or IIO HW driver. The client driver get iio channel
>> by iio_channel_get() and release it by calling iio_channel_release().
>>
>> Add resource managed version (devm_*) of these APIs so that if client
>> calls the devm_iio_channel_get() then it need not to release it explicitly,
>> it can be done by managed device framework when driver get un-binded.
>>
>> This reduces the code in error path and also need of .remove callback in
>> some cases.
>>
> Please provide at least one example of code that uses this API.

Most of client for this APIs are in other subsystem.
When I was working on the patch
[PATCH 2/2] thermal: generic-adc: Add ADC based thermal sensor driver

if I have devm_iio_channel_get() then I can get .remove callback at all.

I did not use this new APIs in my patch because they are in different 
subsystem.

Thread

[PATCH 1/3] iio: core: Add devm_ APIs for iio_channel_{get,release} Laxman Dewangan <ldewangan@nvidia.com> - 2016-04-06 12:50 +0200
  Re: [PATCH 1/3] iio: core: Add devm_ APIs for iio_channel_{get,release} Daniel Baluta <daniel.baluta@gmail.com> - 2016-04-06 15:50 +0200
    Re: [PATCH 1/3] iio: core: Add devm_ APIs for iio_channel_{get,release} Laxman Dewangan <ldewangan@nvidia.com> - 2016-04-06 17:20 +0200
      Re: [PATCH 1/3] iio: core: Add devm_ APIs for  iio_channel_{get,release} Jonathan Cameron <jic23@kernel.org> - 2016-04-10 16:10 +0200
        Re: [PATCH 1/3] iio: core: Add devm_ APIs for iio_channel_{get,release} Laxman Dewangan <ldewangan@nvidia.com> - 2016-04-10 19:50 +0200
  Re: [PATCH 1/3] iio: core: Add devm_ APIs for  iio_channel_{get,release} Jonathan Cameron <jic23@kernel.org> - 2016-04-10 16:10 +0200

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