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Date:   Sun, 12 Apr 2020 13:57:23 +0100
From:   Jonathan Cameron <jic23@...nel.org>
To:     Alexandru Ardelean <alexandru.ardelean@...log.com>
Cc:     <linux-iio@...r.kernel.org>, <linux-kernel@...r.kernel.org>
Subject: Re: [PATCH 5/8] iio: core: drop devm_iio_trigger_free() API call

On Thu, 27 Feb 2020 15:52:24 +0200
Alexandru Ardelean <alexandru.ardelean@...log.com> wrote:

> It's unused so far, so it can't be removed. Also makes sense to remove it
> to discourage weird uses of this call during review.
> 
> Signed-off-by: Alexandru Ardelean <alexandru.ardelean@...log.com>
Applied.  For reasons I'm not sure of the character encoding
on these seems to be messed up.  I'm fixing it by hand, so hopefully
it won't break anything.

Thanks,

Jonathan

> ---
>  .../driver-api/driver-model/devres.rst        |  1 -
>  Documentation/driver-api/iio/triggers.rst     |  1 -
>  drivers/iio/industrialio-trigger.c            | 32 -------------------
>  include/linux/iio/iio.h                       |  2 --
>  4 files changed, 36 deletions(-)
> 
> diff --git a/Documentation/driver-api/driver-model/devres.rst b/Documentation/driver-api/driver-model/devres.rst
> index f638a035e6d2..6c401c74e480 100644
> --- a/Documentation/driver-api/driver-model/devres.rst
> +++ b/Documentation/driver-api/driver-model/devres.rst
> @@ -289,7 +289,6 @@ IIO
>    devm_iio_kfifo_free()
>    devm_iio_triggered_buffer_setup()
>    devm_iio_trigger_alloc()
> -  devm_iio_trigger_free()
>    devm_iio_trigger_register()
>    devm_iio_channel_get()
>    devm_iio_channel_release()
> diff --git a/Documentation/driver-api/iio/triggers.rst b/Documentation/driver-api/iio/triggers.rst
> index 160faa810d12..dfd7ba3eabde 100644
> --- a/Documentation/driver-api/iio/triggers.rst
> +++ b/Documentation/driver-api/iio/triggers.rst
> @@ -4,7 +4,6 @@ Triggers
>  
>  * struct :c:type:`iio_trigger` — industrial I/O trigger device
>  * :c:func:`devm_iio_trigger_alloc` — Resource-managed iio_trigger_alloc
> -* :c:func:`devm_iio_trigger_free` — Resource-managed iio_trigger_free
>  * :c:func:`devm_iio_trigger_register` — Resource-managed iio_trigger_register
>    iio_trigger_unregister
>  * :c:func:`iio_trigger_validate_own_device` — Check if a trigger and IIO
> diff --git a/drivers/iio/industrialio-trigger.c b/drivers/iio/industrialio-trigger.c
> index 611f608a9da2..53d1931f6be8 100644
> --- a/drivers/iio/industrialio-trigger.c
> +++ b/drivers/iio/industrialio-trigger.c
> @@ -585,18 +585,6 @@ static void devm_iio_trigger_release(struct device *dev, void *res)
>  	iio_trigger_free(*(struct iio_trigger **)res);
>  }
>  
> -static int devm_iio_trigger_match(struct device *dev, void *res, void *data)
> -{
> -	struct iio_trigger **r = res;
> -
> -	if (!r || !*r) {
> -		WARN_ON(!r || !*r);
> -		return 0;
> -	}
> -
> -	return *r == data;
> -}
> -
>  /**
>   * devm_iio_trigger_alloc - Resource-managed iio_trigger_alloc()
>   * @dev:		Device to allocate iio_trigger for
> @@ -608,9 +596,6 @@ static int devm_iio_trigger_match(struct device *dev, void *res, void *data)
>   * Managed iio_trigger_alloc.  iio_trigger allocated with this function is
>   * automatically freed on driver detach.
>   *
> - * If an iio_trigger allocated with this function needs to be freed separately,
> - * devm_iio_trigger_free() must be used.
> - *
>   * RETURNS:
>   * Pointer to allocated iio_trigger on success, NULL on failure.
>   */
> @@ -640,23 +625,6 @@ struct iio_trigger *devm_iio_trigger_alloc(struct device *dev,
>  }
>  EXPORT_SYMBOL_GPL(devm_iio_trigger_alloc);
>  
> -/**
> - * devm_iio_trigger_free - Resource-managed iio_trigger_free()
> - * @dev:		Device this iio_dev belongs to
> - * @iio_trig:		the iio_trigger associated with the device
> - *
> - * Free iio_trigger allocated with devm_iio_trigger_alloc().
> - */
> -void devm_iio_trigger_free(struct device *dev, struct iio_trigger *iio_trig)
> -{
> -	int rc;
> -
> -	rc = devres_release(dev, devm_iio_trigger_release,
> -			    devm_iio_trigger_match, iio_trig);
> -	WARN_ON(rc);
> -}
> -EXPORT_SYMBOL_GPL(devm_iio_trigger_free);
> -
>  static void devm_iio_trigger_unreg(struct device *dev, void *res)
>  {
>  	iio_trigger_unregister(*(struct iio_trigger **)res);
> diff --git a/include/linux/iio/iio.h b/include/linux/iio/iio.h
> index 2920c065ab9b..1a5d3d630ec1 100644
> --- a/include/linux/iio/iio.h
> +++ b/include/linux/iio/iio.h
> @@ -689,8 +689,6 @@ void iio_device_free(struct iio_dev *indio_dev);
>  struct iio_dev *devm_iio_device_alloc(struct device *dev, int sizeof_priv);
>  struct iio_trigger *devm_iio_trigger_alloc(struct device *dev,
>  						const char *fmt, ...);
> -void devm_iio_trigger_free(struct device *dev, struct iio_trigger *iio_trig);
> -
>  /**
>   * iio_buffer_enabled() - helper function to test if the buffer is enabled
>   * @indio_dev:		IIO device structure for device

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