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From: Bartlomiej Zolnierkiewicz <b.zolnierkie@samsung.com>
To: Zhang Rui <rui.zhang@intel.com>, Eduardo Valentin <edubezval@gmail.com>
Cc: Amit kucheria <amit.kucheria@linaro.org>,
	Eric Anholt <eric@anholt.net>,
	Stefan Wahren <stefan.wahren@i2se.com>,
	Markus Mayer <mmayer@broadcom.com>,
	bcm-kernel-feedback-list@broadcom.com,
	Heiko Stuebner <heiko@sntech.de>,
	Thierry Reding <thierry.reding@gmail.com>,
	Jonathan Hunter <jonathanh@nvidia.com>,
	Keerthy <j-keerthy@ti.com>,
	Masahiro Yamada <yamada.masahiro@socionext.com>,
	Jun Nie <jun.nie@linaro.org>, Baoyou Xie <baoyou.xie@linaro.org>,
	Shawn Guo <shawnguo@kernel.org>,
	linux-pm@vger.kernel.org, linux-kernel@vger.kernel.org
Subject: Re: [PATCH v2 01/17] thermal: add thermal_zone_set_mode() helper
Date: Tue, 6 Nov 2018 17:11:23 +0100	[thread overview]
Message-ID: <a126af62-cbea-a737-94b0-71cb5a4bebef@samsung.com> (raw)
In-Reply-To: <1541491911.2124.91.camel@intel.com>


On 11/06/2018 09:11 AM, Zhang Rui wrote:
> On 三, 2018-10-17 at 17:52 +0200, Bartlomiej Zolnierkiewicz wrote:
>> In order to remove the code duplication and prepare for further
>> changes:
>>
>> * Add thermal_zone_set_mode() helper. Then update core code and
>>   drivers to use it.
>>
>> There should be no functional changes caused by this patch.
>>
>> Signed-off-by: Bartlomiej Zolnierkiewicz <b.zolnierkie@samsung.com>
>> ---
>>  drivers/thermal/hisi_thermal.c     | 14 ++------------
>>  drivers/thermal/of-thermal.c       |  3 ++-
>>  drivers/thermal/rockchip_thermal.c | 26 +++++++++-----------------
>>  drivers/thermal/thermal_helpers.c  | 14 ++++++++++++++
>>  drivers/thermal/thermal_sysfs.c    |  8 +++++---
>>  include/linux/thermal.h            |  5 +++++
>>  6 files changed, 37 insertions(+), 33 deletions(-)
>>
>>  
>>  
>> diff --git a/drivers/thermal/thermal_helpers.c
>> b/drivers/thermal/thermal_helpers.c
>> index 2ba756a..b18cee2 100644
>> --- a/drivers/thermal/thermal_helpers.c
>> +++ b/drivers/thermal/thermal_helpers.c
>> @@ -224,3 +224,17 @@ int thermal_zone_get_offset(struct
>> thermal_zone_device *tz)
>>  	return 0;
>>  }
>>  EXPORT_SYMBOL_GPL(thermal_zone_get_offset);
>> +
>> +/**
>> + * thermal_zone_set_mode() - sets mode of thermal zone device
>> + * @tz: a valid pointer to a struct thermal_zone_device
>> + * @mode: mode to be set
>> + *
>> + * Return: On success returns 0, an error code otherwise.
>> + */
>> +int thermal_zone_set_mode(struct thermal_zone_device *tz,
>> +			  enum thermal_device_mode mode)
>> +{
>> +	return tz->ops->set_mode(tz, mode);
> 
> better to check tz->ops->set_mode first.

I think that it should be added incrementally later when needed.

We don't do 'defensive coding' in the kernel and in this patchset
thermal_zone_set_mode() is not used in any place which has not used
->set_mode directly previously (actually patches #1-4 should not
cause any functionality changes as noted in patch descriptions).

> thanks,
> rui
>> +}
>> +EXPORT_SYMBOL_GPL(thermal_zone_set_mode);
>> diff --git a/drivers/thermal/thermal_sysfs.c
>> b/drivers/thermal/thermal_sysfs.c
>> index 2241cea..2e9e762 100644
>> --- a/drivers/thermal/thermal_sysfs.c
>> +++ b/drivers/thermal/thermal_sysfs.c
>> @@ -69,17 +69,19 @@
>>  {
>>  	struct thermal_zone_device *tz = to_thermal_zone(dev);
>>  	int result;
>> +	enum thermal_device_mode mode;
>>  
>>  	if (!tz->ops->set_mode)
>>  		return -EPERM;
>>  
>>  	if (!strncmp(buf, "enabled", sizeof("enabled") - 1))
>> -		result = tz->ops->set_mode(tz,
>> THERMAL_DEVICE_ENABLED);
>> +		mode = THERMAL_DEVICE_ENABLED;
>>  	else if (!strncmp(buf, "disabled", sizeof("disabled") - 1))
>> -		result = tz->ops->set_mode(tz,
>> THERMAL_DEVICE_DISABLED);
>> +		mode = THERMAL_DEVICE_DISABLED;
>>  	else
>> -		result = -EINVAL;
>> +		return -EINVAL;
>>  
>> +	result = thermal_zone_set_mode(tz, mode);
>>  	if (result)
>>  		return result;
>>  
>> diff --git a/include/linux/thermal.h b/include/linux/thermal.h
>> index 5f4705f..9d21fd1 100644
>> --- a/include/linux/thermal.h
>> +++ b/include/linux/thermal.h
>> @@ -452,6 +452,8 @@ struct thermal_cooling_device *
>>  int thermal_zone_get_temp(struct thermal_zone_device *tz, int
>> *temp);
>>  int thermal_zone_get_slope(struct thermal_zone_device *tz);
>>  int thermal_zone_get_offset(struct thermal_zone_device *tz);
>> +int thermal_zone_set_mode(struct thermal_zone_device *tz,
>> +			  enum thermal_device_mode mode);
>>  
>>  int get_tz_trend(struct thermal_zone_device *, int);
>>  struct thermal_instance *get_thermal_instance(struct
>> thermal_zone_device *,
>> @@ -518,6 +520,9 @@ static inline int thermal_zone_get_slope(
>>  static inline int thermal_zone_get_offset(
>>  		struct thermal_zone_device *tz)
>>  { return -ENODEV; }
>> +static inline int thermal_zone_set_mode(
>> +		struct thermal_zone_device *tz, enum
>> thermal_device_mode mode)
>> +{ return -ENODEV; }
>>  static inline int get_tz_trend(struct thermal_zone_device *tz, int
>> trip)
>>  { return -ENODEV; }
>>  static inline struct thermal_instance *

Best regards,
--
Bartlomiej Zolnierkiewicz
Samsung R&D Institute Poland
Samsung Electronics

  reply	other threads:[~2018-11-06 16:11 UTC|newest]

Thread overview: 27+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
     [not found] <CGME20181017155314epcas2p4a5aa24978b36354a2ccb2f9b0fb6f0f6@epcas2p4.samsung.com>
2018-10-17 15:52 ` [PATCH v2 00/17] thermal: enable+check sensor after its setup is finished Bartlomiej Zolnierkiewicz
     [not found]   ` <CGME20181017155320epcas2p439b713149d94aa485b3c2ffba063ea03@epcas2p4.samsung.com>
2018-10-17 15:52     ` [PATCH v2 01/17] thermal: add thermal_zone_set_mode() helper Bartlomiej Zolnierkiewicz
2018-11-06  8:11       ` Zhang Rui
2018-11-06 16:11         ` Bartlomiej Zolnierkiewicz [this message]
     [not found]   ` <CGME20181017155326epcas2p21d8b703f27fe54561a0f741fa7920dce@epcas2p2.samsung.com>
2018-10-17 15:52     ` [PATCH v2 02/17] thermal: add thermal_zone_device_check() helper Bartlomiej Zolnierkiewicz
     [not found]   ` <CGME20181017155332epcas2p499ac9d53678d82a9984b3533e723a0dd@epcas2p4.samsung.com>
2018-10-17 15:52     ` [PATCH v2 03/17] thermal: separate sensor enable and check operations Bartlomiej Zolnierkiewicz
2018-10-26 12:11       ` Amit Kucheria
     [not found]   ` <CGME20181017155338epcas1p3a22cd0b22e757c3e51eb72ccee545478@epcas1p3.samsung.com>
2018-10-17 15:52     ` [PATCH v2 04/17] thermal: separate sensor registration and enable+check operations Bartlomiej Zolnierkiewicz
2018-10-31 12:40       ` Amit Kucheria
     [not found]   ` <CGME20181017155345epcas1p18dee37b9a46f2bf0b68aa3ded43f2717@epcas1p1.samsung.com>
2018-10-17 15:52     ` [PATCH v2 05/17] thermal: bcm2835: enable+check sensor after its setup is finished Bartlomiej Zolnierkiewicz
     [not found]   ` <CGME20181017155351epcas1p171637911ef29cdec96dda648cfac51a5@epcas1p1.samsung.com>
2018-10-17 15:52     ` [PATCH v2 06/17] thermal: brcmstb: " Bartlomiej Zolnierkiewicz
     [not found]   ` <CGME20181017155357epcas1p3900b1d3522c636fdee27ab9928c076e1@epcas1p3.samsung.com>
2018-10-17 15:52     ` [PATCH v2 07/17] thermal: hisi_thermal: " Bartlomiej Zolnierkiewicz
     [not found]   ` <CGME20181017155403epcas2p1ed9777e96c6b2c77c2c5b67466be9843@epcas2p1.samsung.com>
2018-10-17 15:52     ` [PATCH v2 08/17] thermal: qcom: tsens: " Bartlomiej Zolnierkiewicz
2018-10-26 12:11       ` Amit Kucheria
2018-10-26 12:39         ` Amit Kucheria
     [not found]   ` <CGME20181017155409epcas2p41b5770668abdb4af99646841a3dd24ec@epcas2p4.samsung.com>
2018-10-17 15:52     ` [PATCH v2 09/17] thermal: qoriq: " Bartlomiej Zolnierkiewicz
     [not found]   ` <CGME20181017155416epcas2p32f63571e9c06cd1aba2b40bcf23de8e1@epcas2p3.samsung.com>
2018-10-17 15:52     ` [PATCH v2 10/17] thermal: rcar_gen3_thermal: " Bartlomiej Zolnierkiewicz
     [not found]   ` <CGME20181017155422epcas1p1644d897c62ceb36b57d33ecd4e3bc81c@epcas1p1.samsung.com>
2018-10-17 15:52     ` [PATCH v2 11/17] thermal: rockchip_thermal: " Bartlomiej Zolnierkiewicz
     [not found]   ` <CGME20181017155428epcas2p1aca0b5e7b30b89db7be7026dfa740fc6@epcas2p1.samsung.com>
2018-10-17 15:52     ` [PATCH v2 12/17] thermal: exynos: " Bartlomiej Zolnierkiewicz
     [not found]   ` <CGME20181017155434epcas1p33a6de1fda3c69cc966f954796a95a935@epcas1p3.samsung.com>
2018-10-17 15:52     ` [PATCH v2 13/17] thermal: tegra: " Bartlomiej Zolnierkiewicz
     [not found]   ` <CGME20181017155440epcas1p12c33048a8c1c083496d1a8996591d884@epcas1p1.samsung.com>
2018-10-17 15:52     ` [PATCH v2 14/17] thermal: ti-soc-thermal: " Bartlomiej Zolnierkiewicz
     [not found]   ` <CGME20181017155447epcas2p2db761f6575de357b65eb5e39b709fead@epcas2p2.samsung.com>
2018-10-17 15:52     ` [PATCH v2 15/17] thermal: uniphier: " Bartlomiej Zolnierkiewicz
     [not found]   ` <CGME20181017155453epcas1p3be6976375c18583bcbebc7ff7853ae50@epcas1p3.samsung.com>
2018-10-17 15:52     ` [PATCH v2 16/17] thermal: zx2967: " Bartlomiej Zolnierkiewicz
     [not found]   ` <CGME20181017155459epcas1p470bd73f433cdbb0f7a11aa8d46212e4e@epcas1p4.samsung.com>
2018-10-17 15:52     ` [PATCH v2 17/17] thermal: warn on attempts to read temperature on disabled sensors Bartlomiej Zolnierkiewicz
     [not found]   ` <1541387097.2124.9.camel@intel.com>
2018-11-05 16:35     ` [PATCH v2 00/17] thermal: enable+check sensor after its setup is finished Bartlomiej Zolnierkiewicz
2018-11-06  0:46       ` Eduardo Valentin
2018-11-06  7:34       ` Zhang Rui

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