linux-kernel - Re: [PATCH 11/13] thermal: of: make of_thermal

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Date:	Mon, 6 Apr 2015 20:27:40 -0700
From:	Eduardo Valentin <edubezval@...il.com>
To:	Sascha Hauer <s.hauer@...gutronix.de>
Cc:	linux-pm@...r.kernel.org, Zhang Rui <rui.zhang@...el.com>,
	linux-kernel@...r.kernel.org,
	Stephen Warren <swarren@...dotorg.org>,
	Mikko Perttunen <mikko.perttunen@...si.fi>,
	kernel@...gutronix.de, linux-mediatek@...ts.infradead.org,
	linux-arm-kernel@...ts.infradead.org
Subject: Re: [PATCH 11/13] thermal: of: make of_thermal_ops const

On Thu, Mar 26, 2015 at 04:53:58PM +0100, Sascha Hauer wrote:
> Now that we no longer modify the ops they can be const again. Also
> we no longer have to duplicate them.
> 
> Signed-off-by: Sascha Hauer <s.hauer@...gutronix.de>

Should this one be merged to patch 09/13?

> ---
>  drivers/thermal/of-thermal.c | 18 +++---------------
>  1 file changed, 3 insertions(+), 15 deletions(-)
> 
> diff --git a/drivers/thermal/of-thermal.c b/drivers/thermal/of-thermal.c
> index df14fdd..9b63193 100644
> --- a/drivers/thermal/of-thermal.c
> +++ b/drivers/thermal/of-thermal.c
> @@ -365,7 +365,7 @@ static int of_thermal_get_crit_temp(struct thermal_zone_device *tz,
>  	return -EINVAL;
>  }
>  
> -static struct thermal_zone_device_ops of_thermal_ops = {
> +static const struct thermal_zone_device_ops of_thermal_ops = {
>  	.get_temp = of_thermal_get_temp,
>  	.get_trend = of_thermal_get_trend,
>  	.set_emul_temp = of_thermal_set_emul_temp,
> @@ -539,10 +539,6 @@ void thermal_zone_of_sensor_unregister(struct device *dev,
>  		return;
>  
>  	mutex_lock(&tzd->lock);
> -	tzd->ops->get_temp = NULL;
> -	tzd->ops->get_trend = NULL;
> -	tzd->ops->set_emul_temp = NULL;
> -
>  	tz->ops = NULL;
>  	tz->sensor_data = NULL;
>  	mutex_unlock(&tzd->lock);
> @@ -849,7 +845,6 @@ int __init of_parse_thermal_zones(void)
>  {
>  	struct device_node *np, *child;
>  	struct __thermal_zone *tz;
> -	struct thermal_zone_device_ops *ops;
>  
>  	np = of_find_node_by_name(NULL, "thermal-zones");
>  	if (!np) {
> @@ -873,29 +868,22 @@ int __init of_parse_thermal_zones(void)
>  			continue;
>  		}
>  
> -		ops = kmemdup(&of_thermal_ops, sizeof(*ops), GFP_KERNEL);
> -		if (!ops)
> -			goto exit_free;
> -
>  		tzp = kzalloc(sizeof(*tzp), GFP_KERNEL);
> -		if (!tzp) {
> -			kfree(ops);
> +		if (!tzp)
>  			goto exit_free;
> -		}
>  
>  		/* No hwmon because there might be hwmon drivers registering */
>  		tzp->no_hwmon = true;
>  
>  		zone = thermal_zone_device_register(child->name, tz->ntrips,
>  						    0, tz,
> -						    ops, tzp,
> +						    &of_thermal_ops, tzp,
>  						    tz->passive_delay,
>  						    tz->polling_delay);
>  		if (IS_ERR(zone)) {
>  			pr_err("Failed to build %s zone %ld\n", child->name,
>  			       PTR_ERR(zone));
>  			kfree(tzp);
> -			kfree(ops);
>  			of_thermal_free_zone(tz);
>  			/* attempting to build remaining zones still */
>  		}
> -- 
> 2.1.4
> 

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