linux-kernel - Re: [PATCH 05/10] thermal: exynos: remove redundant pdata checks from exynos_tmu

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Message-ID: <20140515144739.GA27690@developer>
Date:	Thu, 15 May 2014 10:47:40 -0400
From:	Eduardo Valentin <edubezval@...il.com>
To:	Bartlomiej Zolnierkiewicz <b.zolnierkie@...sung.com>
Cc:	Eduardo Valentin <eduardo.valentin@...com>,
	Zhang Rui <rui.zhang@...el.com>,
	Amit Daniel Kachhap <amit.daniel@...sung.com>,
	Tomasz Figa <t.figa@...sung.com>,
	"Rafael J. Wysocki" <rjw@...ysocki.net>,
	Kyungmin Park <kyungmin.park@...sung.com>,
	linux-samsung-soc@...r.kernel.org, linux-pm@...r.kernel.org,
	linux-kernel@...r.kernel.org
Subject: Re: [PATCH 05/10] thermal: exynos: remove redundant pdata checks
 from exynos_tmu_initialize()

Hello Bartlomiej,

On Mon, May 05, 2014 at 01:15:34PM +0200, Bartlomiej Zolnierkiewicz wrote:
> Remove runtime checks for pdata sanity from exynos_tmu_initialize().
> The current values hardcoded in pdata will never trigger the checks
> and for the new code potential mistakes should be caught during
> development/review phases.
> 
> There should be no functional changes caused by this patch.
> 
> Signed-off-by: Bartlomiej Zolnierkiewicz <b.zolnierkie@...sung.com>
> ---
>  drivers/thermal/samsung/exynos_thermal_common.h |  1 -
>  drivers/thermal/samsung/exynos_tmu.c            | 13 -------------
>  2 files changed, 14 deletions(-)
> 
> diff --git a/drivers/thermal/samsung/exynos_thermal_common.h b/drivers/thermal/samsung/exynos_thermal_common.h
> index 3eb2ed9..cd44719 100644
> --- a/drivers/thermal/samsung/exynos_thermal_common.h
> +++ b/drivers/thermal/samsung/exynos_thermal_common.h
> @@ -27,7 +27,6 @@
>  #define SENSOR_NAME_LEN	16
>  #define MAX_TRIP_COUNT	8
>  #define MAX_COOLING_DEVICE 4
> -#define MAX_THRESHOLD_LEVS 5
>  
>  #define ACTIVE_INTERVAL 500
>  #define IDLE_INTERVAL 10000
> diff --git a/drivers/thermal/samsung/exynos_tmu.c b/drivers/thermal/samsung/exynos_tmu.c
> index 903566f..789d745 100644
> --- a/drivers/thermal/samsung/exynos_tmu.c
> +++ b/drivers/thermal/samsung/exynos_tmu.c
> @@ -158,23 +158,10 @@ static int exynos_tmu_initialize(struct platform_device *pdev)
>  	    data->temp_error > pdata->max_efuse_value)
>  		data->temp_error = pdata->efuse_value & EXYNOS_TMU_TEMP_MASK;
>  
> -	if (pdata->max_trigger_level > MAX_THRESHOLD_LEVS) {
> -		dev_err(&pdev->dev, "Invalid max trigger level\n");
> -		ret = -EINVAL;
> -		goto out;
> -	}
> -
>  	for (i = 0; i < pdata->max_trigger_level; i++) {
>  		if (!pdata->trigger_levels[i])
>  			continue;
>  
> -		if ((pdata->trigger_type[i] == HW_TRIP) &&
> -		(!pdata->trigger_levels[pdata->max_trigger_level - 1])) {
> -			dev_err(&pdev->dev, "Invalid hw trigger level\n");
> -			ret = -EINVAL;
> -			goto out;
> -		}
> -

Does it mean no new pdata are going to be written? i.e., no new soc is
going to be supported by this driver that needs proper pdata checking?

>  		/* Count trigger levels except the HW trip*/
>  		if (!(pdata->trigger_type[i] == HW_TRIP))
>  			trigger_levs++;
> -- 
> 1.8.2.3
> 
> --
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