linux-kernel - Re: [PATCH] pwm: export of_pwm

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Message-ID: <20121105064815.GA31066@avionic-0098.mockup.avionic-design.de>
Date:	Mon, 5 Nov 2012 07:48:16 +0100
From:	Thierry Reding <thierry.reding@...onic-design.de>
To:	Pantelis Antoniou <panto@...oniou-consulting.com>
Cc:	linux-kernel@...r.kernel.org,
	Koen Kooi <koen@...inion.thruhere.net>,
	Matt Porter <mporter@...com>, Russ Dill <Russ.Dill@...com>,
	linux-omap@...r.kernel.org
Subject: Re: [PATCH] pwm: export of_pwm_request

On Wed, Oct 31, 2012 at 05:57:10PM +0200, Pantelis Antoniou wrote:
> No need to hide of_pwm_request, it's useful to other in-kernel users.

Can you specify which users that might be? I'm reluctant to export
symbols which aren't used by any drivers.

> diff --git a/drivers/pwm/core.c b/drivers/pwm/core.c
[...]
> @@ -457,7 +457,7 @@ static struct pwm_chip *of_node_to_pwmchip(struct device_node *np)
>   * becomes mandatory for devices that look up the PWM device via the con_id
>   * parameter.
>   */
> -static struct pwm_device *of_pwm_request(struct device_node *np,
> +struct pwm_device *of_pwm_request(struct device_node *np,
>  					 const char *con_id)

Can you please make sure that this remains properly aligned?

> diff --git a/include/linux/pwm.h b/include/linux/pwm.h
[...]
> @@ -171,6 +171,7 @@ struct pwm_device *pwm_request_from_chip(struct pwm_chip *chip,
>  					 unsigned int index,
>  					 const char *label);
>  
> +struct pwm_device *of_pwm_request(struct device_node *np, const char *consumer);

The second argument is called con_id, so please fix this up to keep it
consistent.

>  struct pwm_device *pwm_get(struct device *dev, const char *consumer);
>  void pwm_put(struct pwm_device *pwm);
>  
> @@ -204,6 +205,12 @@ static inline struct pwm_device *pwm_request_from_chip(struct pwm_chip *chip,
>  	return ERR_PTR(-ENODEV);
>  }
>  
> +static inline struct pwm_device *of_pwm_request(struct device_node *np,
> +					 const char *consumer)

Here as well. Also make sure the arguments are properly aligned.

Thierry

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