linux-kernel - Re: [PATCH V6 15/30] thermal: exynos: Return success even if no cooling data supplied

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Date:	Wed, 19 Jun 2013 19:04:32 -0400
From:	Eduardo Valentin <eduardo.valentin@...com>
To:	Eduardo Valentin <eduardo.valentin@...com>
CC:	Amit Daniel Kachhap <amit.daniel@...sung.com>,
	<linux-pm@...r.kernel.org>, Zhang Rui <rui.zhang@...el.com>,
	<linux-samsung-soc@...r.kernel.org>,
	<linux-kernel@...r.kernel.org>, <amit.kachhap@...il.com>,
	Kukjin Kim <kgene.kim@...sung.com>, <jonghwa3.lee@...sung.com>
Subject: Re: [PATCH V6 15/30] thermal: exynos: Return success even if no cooling
 data supplied

On 19-06-2013 18:54, Eduardo Valentin wrote:
> On 17-06-2013 02:46, Amit Daniel Kachhap wrote:
>> This patch removes the error return in the bind/unbind routine
>> as the platform may not register any cpufreq cooling data.
>>
>> Acked-by: Kukjin Kim <kgene.kim@...sung.com>
>> Acked-by: Jonghwa Lee <jonghwa3.lee@...sung.com>
>> Signed-off-by: Amit Daniel Kachhap <amit.daniel@...sung.com>
>> ---
>>  drivers/thermal/samsung/exynos_thermal_common.c |    4 ++--
>>  1 files changed, 2 insertions(+), 2 deletions(-)
>>
>> diff --git a/drivers/thermal/samsung/exynos_thermal_common.c b/drivers/thermal/samsung/exynos_thermal_common.c
>> index 7064eb7..86d39aa 100644
>> --- a/drivers/thermal/samsung/exynos_thermal_common.c
>> +++ b/drivers/thermal/samsung/exynos_thermal_common.c
>> @@ -131,7 +131,7 @@ static int exynos_bind(struct thermal_zone_device *thermal,
>>  	tab_size = data->cooling_data.freq_clip_count;
>>  
>>  	if (tab_ptr == NULL || tab_size == 0)
>> -		return -EINVAL;
>> +		return 0;
>>  
>>  	/* find the cooling device registered*/
>>  	for (i = 0; i < th_zone->cool_dev_size; i++)
>> @@ -180,7 +180,7 @@ static int exynos_unbind(struct thermal_zone_device *thermal,
>>  	tab_size = data->cooling_data.freq_clip_count;
>>  
>>  	if (tab_size == 0)
>> -		return -EINVAL;
>> +		return 0;
>>  
>>  	/* find the cooling device registered*/
>>  	for (i = 0; i < th_zone->cool_dev_size; i++)
>>
> 
> I have one question before acking this one: what happens if one
> registers a TMU with no freq tab? Say the case where you have three
> sensors, just like SOC_ARCH_EXYNOS5440. Would you register
> cpufreq_cooling device for all of them? In other way, are you having 3
> cpufreq_cooling devices?

I am actually fine with this patch. just saw that you adjust things on
patch 16.

Acked-by: Eduardo Valentin <eduardo.valentin@...com>

> 
> 


-- 
You have got to be excited about what you are doing. (L. Lamport)

Eduardo Valentin


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