linux-kernel - Re: [PATCH v3 04/13] thermal: qoriq: Add local struct qoriq

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Date:   Thu, 4 Apr 2019 05:28:49 +0200
From:   Daniel Lezcano <daniel.lezcano@...aro.org>
To:     Andrey Smirnov <andrew.smirnov@...il.com>, linux-pm@...r.kernel.org
Cc:     Chris Healy <cphealy@...il.com>,
        Lucas Stach <l.stach@...gutronix.de>,
        Zhang Rui <rui.zhang@...el.com>,
        Eduardo Valentin <edubezval@...il.com>,
        Angus Ainslie <angus@...ea.ca>, linux-imx@....com,
        linux-kernel@...r.kernel.org
Subject: Re: [PATCH v3 04/13] thermal: qoriq: Add local struct qoriq_sensor
 pointer

On 01/04/2019 06:14, Andrey Smirnov wrote:
> Add local struct qoriq_sensor pointer in qoriq_tmu_register_tmu_zone()
> for brevity.
> 
> Signed-off-by: Andrey Smirnov <andrew.smirnov@...il.com>
> Cc: Chris Healy <cphealy@...il.com>
> Cc: Lucas Stach <l.stach@...gutronix.de>
> Cc: Zhang Rui <rui.zhang@...el.com>
> Cc: Eduardo Valentin <edubezval@...il.com>
> Cc: Daniel Lezcano <daniel.lezcano@...aro.org>
> Cc: Angus Ainslie (Purism) <angus@...ea.ca>
> Cc: linux-imx@....com
> Cc: linux-pm@...r.kernel.org
> Cc: linux-kernel@...r.kernel.org
> ---
>  drivers/thermal/qoriq_thermal.c | 10 +++++-----
>  1 file changed, 5 insertions(+), 5 deletions(-)
> 
> diff --git a/drivers/thermal/qoriq_thermal.c b/drivers/thermal/qoriq_thermal.c
> index 6d40b9788266..e281bdcfa11f 100644
> --- a/drivers/thermal/qoriq_thermal.c
> +++ b/drivers/thermal/qoriq_thermal.c
> @@ -114,18 +114,18 @@ static int qoriq_tmu_register_tmu_zone(struct platform_device *pdev)
>  
>  	for (id = 0; id < SITES_MAX; id++) {
>  		struct thermal_zone_device *tzd;
> +		struct qoriq_sensor *s;
>  
> -		qdata->sensor[id] = devm_kzalloc(&pdev->dev,
> +		s = qdata->sensor[id] = devm_kzalloc(&pdev->dev,
>  				sizeof(struct qoriq_sensor), GFP_KERNEL);

I would not recommend this, especially if you use a variable helper for
clarity. Keep using the 's' variable and then assign qdata->sensor[id] =
s at the end when everything is ok. May be rename it 'sensor'?

>  		if (!qdata->sensor[id])
>  			return -ENOMEM;
>  
> -		qdata->sensor[id]->id = id;
> -		qdata->sensor[id]->qdata = qdata;
> +		s->id = id;
> +		s->qdata = qdata;
>  
>  		tzd = devm_thermal_zone_of_sensor_register(&pdev->dev, id,
> -							   qdata->sensor[id],
> -							   &tmu_tz_ops);
> +							   s, &tmu_tz_ops);
>  		if (IS_ERR(tzd)) {
>  			if (PTR_ERR(tzd) == -ENODEV)
>  				continue;
> 


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