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From: Daniel Lezcano <daniel.lezcano@linaro.org>
To: Andrzej Pietrasiewicz <andrzej.p@collabora.com>,
	linux-pm@vger.kernel.org
Cc: Zhang Rui <rui.zhang@intel.com>,
	"Rafael J . Wysocki" <rjw@rjwysocki.net>,
	Len Brown <lenb@kernel.org>, Jiri Pirko <jiri@mellanox.com>,
	Ido Schimmel <idosch@mellanox.com>,
	"David S . Miller" <davem@davemloft.net>,
	Peter Kaestle <peter@piie.net>,
	Darren Hart <dvhart@infradead.org>,
	Andy Shevchenko <andy@infradead.org>,
	Support Opensource <support.opensource@diasemi.com>,
	Amit Kucheria <amit.kucheria@verdurent.com>,
	Shawn Guo <shawnguo@kernel.org>,
	Sascha Hauer <s.hauer@pengutronix.de>,
	Pengutronix Kernel Team <kernel@pengutronix.de>,
	Fabio Estevam <festevam@gmail.com>,
	NXP Linux Team <linux-imx@nxp.com>,
	Allison Randal <allison@lohutok.net>,
	Enrico Weigelt <info@metux.net>,
	Gayatri Kammela <gayatri.kammela@intel.com>,
	Thomas Gleixner <tglx@linutronix.de>,
	linux-acpi@vger.kernel.org, netdev@vger.kernel.org,
	platform-driver-x86@vger.kernel.org,
	linux-arm-kernel@lists.infradead.org, kernel@collabora.com
Subject: Re: [RFC v2 3/9] thermal: Properly handle mode values in .set_mode()
Date: Wed, 15 Apr 2020 00:14:50 +0200	[thread overview]
Message-ID: <e7ed4bcf-8605-c6ad-4412-acb33251a0b3@linaro.org> (raw)
In-Reply-To: <20200414180105.20042-4-andrzej.p@collabora.com>


Hi Andrzej,

you can drop this patch. It is not useful as the caller checks the
correctness of the values in the patch 4/9.

Moreover the patch is bogus because it returns before releasing the lock.

On 14/04/2020 20:00, Andrzej Pietrasiewicz wrote:
> Allow only THERMAL_DEVICE_ENABLED and THERMAL_DEVICE_DISABLED as valid
> states to transition to.




> Signed-off-by: Andrzej Pietrasiewicz <andrzej.p@collabora.com>
> ---
>  drivers/net/ethernet/mellanox/mlxsw/core_thermal.c | 8 ++++++--
>  drivers/platform/x86/acerhdf.c                     | 4 ++++
>  drivers/thermal/imx_thermal.c                      | 4 +++-
>  drivers/thermal/intel/intel_quark_dts_thermal.c    | 5 ++++-
>  drivers/thermal/of-thermal.c                       | 4 +++-
>  5 files changed, 20 insertions(+), 5 deletions(-)
> 
> diff --git a/drivers/net/ethernet/mellanox/mlxsw/core_thermal.c b/drivers/net/ethernet/mellanox/mlxsw/core_thermal.c
> index ce0a6837daa3..cd435ca7adbe 100644
> --- a/drivers/net/ethernet/mellanox/mlxsw/core_thermal.c
> +++ b/drivers/net/ethernet/mellanox/mlxsw/core_thermal.c
> @@ -296,8 +296,10 @@ static int mlxsw_thermal_set_mode(struct thermal_zone_device *tzdev,
>  
>  	if (mode == THERMAL_DEVICE_ENABLED)
>  		tzdev->polling_delay = thermal->polling_delay;
> -	else
> +	else if (mode == THERMAL_DEVICE_DISABLED)
>  		tzdev->polling_delay = 0;
> +	else
> +		return -EINVAL;
>  
>  	mutex_unlock(&tzdev->lock);
>  
> @@ -486,8 +488,10 @@ static int mlxsw_thermal_module_mode_set(struct thermal_zone_device *tzdev,
>  
>  	if (mode == THERMAL_DEVICE_ENABLED)
>  		tzdev->polling_delay = thermal->polling_delay;
> -	else
> +	else if (mode == THERMAL_DEVICE_DISABLED)
>  		tzdev->polling_delay = 0;
> +	else
> +		return -EINVAL;
>  
>  	mutex_unlock(&tzdev->lock);
>  
> diff --git a/drivers/platform/x86/acerhdf.c b/drivers/platform/x86/acerhdf.c
> index 8cc86f4e3ac1..d5188c1d688b 100644
> --- a/drivers/platform/x86/acerhdf.c
> +++ b/drivers/platform/x86/acerhdf.c
> @@ -431,6 +431,10 @@ static int acerhdf_get_mode(struct thermal_zone_device *thermal,
>  static int acerhdf_set_mode(struct thermal_zone_device *thermal,
>  			    enum thermal_device_mode mode)
>  {
> +	if (mode != THERMAL_DEVICE_DISABLED &&
> +	    mode != THERMAL_DEVICE_ENABLED)
> +		return -EINVAL;
> +
>  	if (mode == THERMAL_DEVICE_DISABLED && kernelmode)
>  		acerhdf_revert_to_bios_mode();
>  	else if (mode == THERMAL_DEVICE_ENABLED && !kernelmode)
> diff --git a/drivers/thermal/imx_thermal.c b/drivers/thermal/imx_thermal.c
> index e761c9b42217..36b1924f1938 100644
> --- a/drivers/thermal/imx_thermal.c
> +++ b/drivers/thermal/imx_thermal.c
> @@ -361,7 +361,7 @@ static int imx_set_mode(struct thermal_zone_device *tz,
>  			data->irq_enabled = true;
>  			enable_irq(data->irq);
>  		}
> -	} else {
> +	} else if (mode == THERMAL_DEVICE_DISABLED) {
>  		regmap_write(map, soc_data->sensor_ctrl + REG_CLR,
>  			     soc_data->measure_temp_mask);
>  		regmap_write(map, soc_data->sensor_ctrl + REG_SET,
> @@ -374,6 +374,8 @@ static int imx_set_mode(struct thermal_zone_device *tz,
>  			disable_irq(data->irq);
>  			data->irq_enabled = false;
>  		}
> +	} else {
> +		return -EINVAL;
>  	}
>  
>  	data->mode = mode;
> diff --git a/drivers/thermal/intel/intel_quark_dts_thermal.c b/drivers/thermal/intel/intel_quark_dts_thermal.c
> index d704fc104cfd..11d7db895125 100644
> --- a/drivers/thermal/intel/intel_quark_dts_thermal.c
> +++ b/drivers/thermal/intel/intel_quark_dts_thermal.c
> @@ -325,8 +325,11 @@ static int sys_set_mode(struct thermal_zone_device *tzd,
>  	mutex_lock(&dts_update_mutex);
>  	if (mode == THERMAL_DEVICE_ENABLED)
>  		ret = soc_dts_enable(tzd);
> -	else
> +	else if (mode == THERMAL_DEVICE_DISABLED)
>  		ret = soc_dts_disable(tzd);
> +	else
> +		return -EINVAL;
> +
>  	mutex_unlock(&dts_update_mutex);
>  
>  	return ret;
> diff --git a/drivers/thermal/of-thermal.c b/drivers/thermal/of-thermal.c
> index 874a47d6923f..36bebf623980 100644
> --- a/drivers/thermal/of-thermal.c
> +++ b/drivers/thermal/of-thermal.c
> @@ -289,9 +289,11 @@ static int of_thermal_set_mode(struct thermal_zone_device *tz,
>  	if (mode == THERMAL_DEVICE_ENABLED) {
>  		tz->polling_delay = data->polling_delay;
>  		tz->passive_delay = data->passive_delay;
> -	} else {
> +	} else if (mode == THERMAL_DEVICE_DISABLED) {
>  		tz->polling_delay = 0;
>  		tz->passive_delay = 0;
> +	} else {
> +		return -EINVAL;
>  	}
>  
>  	mutex_unlock(&tz->lock);
> 


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  reply	other threads:[~2020-04-14 22:14 UTC|newest]

Thread overview: 137+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2020-04-07 17:49 [RFC 0/8] Stop monitoring disabled devices Andrzej Pietrasiewicz
2020-04-07 17:49 ` [RFC 1/8] thermal: int3400_thermal: Statically initialize .get_mode()/.set_mode() ops Andrzej Pietrasiewicz
     [not found]   ` <CGME20200415091204eucas1p1983548c2db52d8d0c2a5367034ec80dd@eucas1p1.samsung.com>
2020-04-15  9:12     ` Bartlomiej Zolnierkiewicz
2020-04-07 17:49 ` [RFC 2/8] thermal: Properly handle mode values in .set_mode() Andrzej Pietrasiewicz
     [not found]   ` <CGME20200415100543eucas1p24e24293da39844ca8791db86af5365a7@eucas1p2.samsung.com>
2020-04-15 10:05     ` Bartlomiej Zolnierkiewicz
2020-04-07 17:49 ` [RFC 3/8] thermal: Store thermal mode in a dedicated enum Andrzej Pietrasiewicz
     [not found]   ` <CGME20200415100944eucas1p1dcfeb784e790ca2fc3417fd2797e3f5d@eucas1p1.samsung.com>
2020-04-15 10:09     ` Bartlomiej Zolnierkiewicz
2020-04-07 17:49 ` [RFC 4/8] thermal: core: Introduce THERMAL_DEVICE_INITIAL Andrzej Pietrasiewicz
2020-04-07 17:49 ` [RFC 5/8] thermal: core: Monitor thermal zone after mode change Andrzej Pietrasiewicz
2020-04-07 17:49 ` [RFC 6/8] thermal: Set initial state to THERMAL_DEVICE_INITIAL Andrzej Pietrasiewicz
2020-04-07 17:49 ` [RFC 7/8] thermal: of: Monitor thermal zone after enabling it Andrzej Pietrasiewicz
     [not found]   ` <CGME20200415101829eucas1p18e21324d3c39926fffc6c8b5dc52f206@eucas1p1.samsung.com>
2020-04-15 10:18     ` Bartlomiej Zolnierkiewicz
2020-04-07 17:49 ` [RFC 8/8] thermal: Stop polling DISABLED thermal devices Andrzej Pietrasiewicz
2020-04-09 10:29 ` [RFC 0/8] Stop monitoring disabled devices Daniel Lezcano
2020-04-09 11:10   ` Andrzej Pietrasiewicz
     [not found]     ` <CGME20200415104010eucas1p101278e53e34a2e56dfc7c82b533a9122@eucas1p1.samsung.com>
2020-04-15 10:40       ` Bartlomiej Zolnierkiewicz
2020-04-17 16:23         ` Andrzej Pietrasiewicz
2020-04-19 11:42           ` Bartlomiej Zolnierkiewicz
2020-04-17 21:11         ` Peter Kästle
2020-04-14 18:00   ` [RFC v2 0/9] " Andrzej Pietrasiewicz
2020-04-14 18:00     ` [RFC v2 1/9] thermal: int3400_thermal: Statically initialize .get_mode()/.set_mode() ops Andrzej Pietrasiewicz
2020-04-15  9:23       ` Daniel Lezcano
2020-04-14 18:00     ` [RFC v2 2/9] thermal: Eliminate an always-false condition Andrzej Pietrasiewicz
2020-04-14 18:00     ` [RFC v2 3/9] thermal: Properly handle mode values in .set_mode() Andrzej Pietrasiewicz
2020-04-14 22:14       ` Daniel Lezcano [this message]
2020-04-14 18:01     ` [RFC v2 4/9] thermal: core: Let thermal zone device's mode be stored in its struct Andrzej Pietrasiewicz
2020-04-14 22:30       ` Daniel Lezcano
2020-04-14 18:01     ` [RFC v2 5/9] thermal: Store mode in thermal_zone_device Andrzej Pietrasiewicz
2020-04-15 10:55       ` Daniel Lezcano
2020-04-17 16:20         ` [RFC v3 0/2] Stop monitoring disabled devices Andrzej Pietrasiewicz
2020-04-17 16:20           ` [RFC v3 1/2] thermal: core: Let thermal zone device's mode be stored in its struct Andrzej Pietrasiewicz
2020-04-17 20:44             ` Andy Shevchenko
2020-04-19 11:38             ` Bartlomiej Zolnierkiewicz
2020-04-19 13:10               ` Bartlomiej Zolnierkiewicz
2020-04-20 18:17                 ` [PATCH 0/2] Stop monitoring disabled devices Andrzej Pietrasiewicz
2020-04-20 18:17                   ` [PATCH 1/2] thermal: core: Let thermal zone device's mode be stored in its struct Andrzej Pietrasiewicz
2020-04-22  7:49                     ` kbuild test robot
2020-04-22 17:14                       ` Andrzej Pietrasiewicz
2020-04-22 17:03                     ` kbuild test robot
2020-04-22 17:15                       ` Andrzej Pietrasiewicz
2020-04-20 18:17                   ` [PATCH 2/2] thermal: core: Stop polling DISABLED thermal devices Andrzej Pietrasiewicz
2020-04-22 16:12                   ` [PATCH RESEND 1/2] thermal: core: Let thermal zone device's mode be stored in its struct Andrzej Pietrasiewicz
2020-04-23 14:39                     ` Bartlomiej Zolnierkiewicz
2020-04-23 16:57                       ` [PATCH v3 0/2] Stop monitoring disabled devices Andrzej Pietrasiewicz
2020-04-23 16:57                         ` [PATCH v3 1/2] thermal: core: Let thermal zone device's mode be stored in its struct Andrzej Pietrasiewicz
2020-05-04  7:00                           ` Bartlomiej Zolnierkiewicz
2020-04-23 16:57                         ` [PATCH v3 2/2] thermal: core: Stop polling DISABLED thermal devices Andrzej Pietrasiewicz
2020-04-24  9:03                           ` Zhang, Rui
2020-04-27 14:20                             ` Zhang, Rui
2020-04-27 18:34                               ` Andrzej Pietrasiewicz
2020-04-28 13:55                                 ` Zhang, Rui
2020-04-20 11:03               ` [RFC v3 1/2] thermal: core: Let thermal zone device's mode be stored in its struct Andrzej Pietrasiewicz
2020-04-20 18:19                 ` Andrzej Pietrasiewicz
2020-05-23 21:24             ` Daniel Lezcano
2020-05-25 19:35               ` Andrzej Pietrasiewicz
2020-05-25 22:08                 ` Daniel Lezcano
2020-05-26 16:56                   ` Andrzej Pietrasiewicz
2020-05-27 13:30               ` Bartlomiej Zolnierkiewicz
2020-04-17 16:20           ` [RFC v3 2/2] thermal: core: Stop polling DISABLED thermal devices Andrzej Pietrasiewicz
2020-04-19 13:50           ` [RFC v3 1/2] thermal: core: Let thermal zone device's mode be stored in its struct Peter Kästle
2020-04-14 18:01     ` [RFC v2 6/9] thermal: Remove get_mode() method Andrzej Pietrasiewicz
2020-04-14 18:01     ` [RFC v2 7/9] thermal: core: Monitor thermal zone after mode change Andrzej Pietrasiewicz
2020-04-14 18:01     ` [RFC v2 8/9] thermal: of: Monitor thermal zone after enabling it Andrzej Pietrasiewicz
2020-04-14 18:01     ` [RFC v2 9/9] thermal: core: Stop polling DISABLED thermal devices Andrzej Pietrasiewicz
2020-04-14 21:52     ` [RFC v2 0/9] Stop monitoring disabled devices Ezequiel Garcia
     [not found] <Message-ID: <4493c0e4-51aa-3907-810c-74949ff27ca4@samsung.com>
2020-05-28 19:20 ` [PATCH v4 00/11] " Andrzej Pietrasiewicz
2020-05-28 19:20   ` [PATCH v4 01/11] acpi: thermal: Fix error handling in the register function Andrzej Pietrasiewicz
2020-05-29 14:50     ` Guenter Roeck
2020-06-24  8:16     ` Bartlomiej Zolnierkiewicz
2020-05-28 19:20   ` [PATCH v4 02/11] thermal: Store thermal mode in a dedicated enum Andrzej Pietrasiewicz
2020-05-29 14:48     ` Guenter Roeck
2020-05-29 15:13       ` Andrzej Pietrasiewicz
2020-05-29 15:34         ` Guenter Roeck
2020-06-24  9:38     ` Bartlomiej Zolnierkiewicz
2020-05-28 19:20   ` [PATCH v4 03/11] thermal: Add current mode to thermal zone device Andrzej Pietrasiewicz
2020-05-29 14:51     ` Guenter Roeck
2020-06-24  9:39     ` Bartlomiej Zolnierkiewicz
2020-05-28 19:20   ` [PATCH v4 04/11] thermal: Store device mode in struct thermal_zone_device Andrzej Pietrasiewicz
2020-06-24  9:40     ` Bartlomiej Zolnierkiewicz
2020-05-28 19:20   ` [PATCH v4 05/11] thermal: remove get_mode() operation of drivers Andrzej Pietrasiewicz
2020-06-24  9:47     ` Bartlomiej Zolnierkiewicz
2020-05-28 19:20   ` [PATCH v4 06/11] thermal: Add mode helpers Andrzej Pietrasiewicz
2020-06-24  9:49     ` Bartlomiej Zolnierkiewicz
2020-05-28 19:20   ` [PATCH v4 07/11] thermal: Use mode helpers in drivers Andrzej Pietrasiewicz
2020-06-24  9:51     ` Bartlomiej Zolnierkiewicz
2020-06-26 16:08       ` Andrzej Pietrasiewicz
2020-05-28 19:20   ` [PATCH v4 08/11] thermal: Explicitly enable non-changing thermal zone devices Andrzej Pietrasiewicz
2020-06-24 10:00     ` Bartlomiej Zolnierkiewicz
2020-05-28 19:20   ` [PATCH v4 09/11] thermal: core: Stop polling DISABLED thermal devices Andrzej Pietrasiewicz
2020-06-24 10:02     ` Bartlomiej Zolnierkiewicz
2020-05-28 19:20   ` [PATCH v4 10/11] thermal: Simplify or eliminate unnecessary set_mode() methods Andrzej Pietrasiewicz
2020-06-24 10:03     ` Bartlomiej Zolnierkiewicz
2020-05-28 19:20   ` [PATCH v4 11/11] thermal: Rename set_mode() to change_mode() Andrzej Pietrasiewicz
2020-06-24 10:03     ` Bartlomiej Zolnierkiewicz
2020-06-01 11:36   ` [PATCH v4 02/11] thermal: Store thermal mode in a dedicated enum Peter Kästle
2020-06-01 11:36   ` [PATCH v4 04/11] thermal: Store device mode in struct thermal_zone_device Peter Kästle
2020-06-01 11:37   ` [PATCH v4 05/11] thermal: remove get_mode() operation of drivers Peter Kästle
2020-06-01 11:37   ` [PATCH v4 07/11] thermal: Use mode helpers in drivers Peter Kästle
2020-06-01 11:38   ` [PATCH v4 10/11] thermal: Simplify or eliminate unnecessary set_mode() methods Peter Kästle
2020-06-01 11:38   ` [PATCH v4 11/11] thermal: Rename set_mode() to change_mode() Peter Kästle
2020-06-23 14:37   ` [PATCH v4 00/11] Stop monitoring disabled devices Daniel Lezcano
2020-06-26 17:37     ` [PATCH v5 " Andrzej Pietrasiewicz
2020-06-26 17:37       ` [PATCH v5 01/11] acpi: thermal: Fix error handling in the register function Andrzej Pietrasiewicz
2020-06-29  7:19         ` Amit Kucheria
2020-06-26 17:37       ` [PATCH v5 02/11] thermal: Store thermal mode in a dedicated enum Andrzej Pietrasiewicz
2020-06-29  7:19         ` Amit Kucheria
2020-06-26 17:37       ` [PATCH v5 03/11] thermal: Add current mode to thermal zone device Andrzej Pietrasiewicz
2020-06-29  7:19         ` Amit Kucheria
2020-06-26 17:37       ` [PATCH v5 04/11] thermal: Store device mode in struct thermal_zone_device Andrzej Pietrasiewicz
2020-06-29  7:19         ` Amit Kucheria
2020-06-26 17:37       ` [PATCH v5 05/11] thermal: remove get_mode() operation of drivers Andrzej Pietrasiewicz
2020-06-29  7:20         ` Amit Kucheria
2020-06-26 17:37       ` [PATCH v5 06/11] thermal: Add mode helpers Andrzej Pietrasiewicz
2020-06-26 20:50         ` kernel test robot
2020-06-26 20:50         ` [RFC PATCH] thermal: thermal_zone_device_set_mode() can be static kernel test robot
2020-06-26 20:55         ` [PATCH v5 06/11] thermal: Add mode helpers kernel test robot
2020-06-29  7:04         ` Amit Kucheria
2020-06-29 11:16           ` [PATCH v6 00/11] Stop monitoring disabled devices Andrzej Pietrasiewicz
2020-06-29 11:16             ` [PATCH v6 01/11] acpi: thermal: Fix error handling in the register function Andrzej Pietrasiewicz
2020-06-29 11:16             ` [PATCH v6 02/11] thermal: Store thermal mode in a dedicated enum Andrzej Pietrasiewicz
2020-06-29 11:16             ` [PATCH v6 03/11] thermal: Add current mode to thermal zone device Andrzej Pietrasiewicz
2020-06-29 11:16             ` [PATCH v6 04/11] thermal: Store device mode in struct thermal_zone_device Andrzej Pietrasiewicz
2020-06-29 11:16             ` [PATCH v6 05/11] thermal: remove get_mode() operation of drivers Andrzej Pietrasiewicz
2020-06-29 11:16             ` [PATCH v6 06/11] thermal: Add mode helpers Andrzej Pietrasiewicz
2020-06-29 12:08               ` Daniel Lezcano
2020-06-29 11:16             ` [PATCH v6 07/11] thermal: Use mode helpers in drivers Andrzej Pietrasiewicz
2020-06-29 11:16             ` [PATCH v6 08/11] thermal: Explicitly enable non-changing thermal zone devices Andrzej Pietrasiewicz
2020-06-29 11:16             ` [PATCH v6 09/11] thermal: core: Stop polling DISABLED thermal devices Andrzej Pietrasiewicz
2020-06-29 11:16             ` [PATCH v6 10/11] thermal: Simplify or eliminate unnecessary set_mode() methods Andrzej Pietrasiewicz
2020-06-29 11:16             ` [PATCH v6 11/11] thermal: Rename set_mode() to change_mode() Andrzej Pietrasiewicz
2020-06-26 17:37       ` [PATCH v5 07/11] thermal: Use mode helpers in drivers Andrzej Pietrasiewicz
2020-06-26 17:37       ` [PATCH v5 08/11] thermal: Explicitly enable non-changing thermal zone devices Andrzej Pietrasiewicz
2020-06-26 17:37       ` [PATCH v5 09/11] thermal: core: Stop polling DISABLED thermal devices Andrzej Pietrasiewicz
2020-06-26 17:37       ` [PATCH v5 10/11] thermal: Simplify or eliminate unnecessary set_mode() methods Andrzej Pietrasiewicz
2020-06-26 17:37       ` [PATCH v5 11/11] thermal: Rename set_mode() to change_mode() Andrzej Pietrasiewicz
2020-06-01 10:02 ` [PATCH v4 00/11] Stop monitoring disabled devices Peter Kästle
2020-06-01 10:20   ` Andrzej Pietrasiewicz

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