Re: [PATCH v4 04/11] thermal: Store device mode in struct thermal_zone_device

Re: [PATCH v4 04/11] thermal: Store device mode in struct thermal_zone_device

[Andrzej Pietrasiewicz]

Hi Guenter,

W dniu 29.05.2020 o 17:42, Guenter Roeck pisze:
> On Thu, May 28, 2020 at 09:20:44PM +0200, Andrzej Pietrasiewicz wrote:
>> Prepare for eliminating get_mode().
>>
> Might be worthwhile to explain (not only in the subject) what you are
> doing here.
> 
>> Signed-off-by: Andrzej Pietrasiewicz <andrzej.p@collabora.com>
>> ---
>>   drivers/acpi/thermal.c                        | 18 ++++++----------
>>   .../ethernet/mellanox/mlxsw/core_thermal.c    | 21 +++++++------------
>>   drivers/platform/x86/acerhdf.c                | 15 ++++++-------
>>   drivers/thermal/da9062-thermal.c              |  6 ++----
>>   drivers/thermal/imx_thermal.c                 | 17 +++++++--------
>>   .../intel/int340x_thermal/int3400_thermal.c   | 12 +++--------
>>   .../thermal/intel/intel_quark_dts_thermal.c   | 16 +++++++-------
>>   drivers/thermal/thermal_of.c                  | 10 +++------
> 
> After this patch is applied on top of the thermal 'testing' branch,
> there are still local instances of thermal_device_mode in
> 	drivers/thermal/st/stm_thermal.c
> 	drivers/thermal/ti-soc-thermal/ti-thermal-common.c
> 
> If there is a reason not to replace those, it might make sense to explain
> it here.
> 

My understanding is that these two are sensor devices which are "plugged"
into their "parent" thermal zone device. The latter is the "proper" tzd.
They both use thermal_zone_of_device_ops instead of thermal_zone_device_ops.
The former doesn't even have get_mode(). The thermal core, when it calls
get_mode(), operates on the "parent" thermal zone devices.

Consequently, the drivers you mention use their "mode" members for
their private purpose, not for the purpose of storing the "parent"
thermal zone device mode.

Andrzej




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Re: [PATCH v4 04/11] thermal: Store device mode in struct thermal_zone_device

[Andrzej Pietrasiewicz]

Hi again,

W dniu 29.05.2020 o 18:08, Andrzej Pietrasiewicz pisze:
> Hi Guenter,
> 
> W dniu 29.05.2020 o 17:42, Guenter Roeck pisze:
>> On Thu, May 28, 2020 at 09:20:44PM +0200, Andrzej Pietrasiewicz wrote:
>>> Prepare for eliminating get_mode().
>>>
>> Might be worthwhile to explain (not only in the subject) what you are
>> doing here.
>>
>>> Signed-off-by: Andrzej Pietrasiewicz <andrzej.p@collabora.com>
>>> ---
>>>   drivers/acpi/thermal.c                        | 18 ++++++----------
>>>   .../ethernet/mellanox/mlxsw/core_thermal.c    | 21 +++++++------------
>>>   drivers/platform/x86/acerhdf.c                | 15 ++++++-------
>>>   drivers/thermal/da9062-thermal.c              |  6 ++----
>>>   drivers/thermal/imx_thermal.c                 | 17 +++++++--------
>>>   .../intel/int340x_thermal/int3400_thermal.c   | 12 +++--------
>>>   .../thermal/intel/intel_quark_dts_thermal.c   | 16 +++++++-------
>>>   drivers/thermal/thermal_of.c                  | 10 +++------
>>
>> After this patch is applied on top of the thermal 'testing' branch,
>> there are still local instances of thermal_device_mode in
>>     drivers/thermal/st/stm_thermal.c
>>     drivers/thermal/ti-soc-thermal/ti-thermal-common.c
>>
>> If there is a reason not to replace those, it might make sense to explain
>> it here.
>>
> 
> My understanding is that these two are sensor devices which are "plugged"
> into their "parent" thermal zone device. The latter is the "proper" tzd.
> They both use thermal_zone_of_device_ops instead of thermal_zone_device_ops.
> The former doesn't even have get_mode(). The thermal core, when it calls
> get_mode(), operates on the "parent" thermal zone devices.
> 
> Consequently, the drivers you mention use their "mode" members for
> their private purpose, not for the purpose of storing the "parent"
> thermal zone device mode.
> 

Let me also say it differently.

Both drivers which you mention use devm_thermal_zone_of_sensor_register().
It calls thermal_zone_of_sensor_register(), which "will search the list of
thermal zones described in device tree and look for the zone that refer to
the sensor device pointed by @dev->of_node as temperature providers. For
the zone pointing to the sensor node, the sensor will be added to the DT
thermal zone device." When a match is found thermal_zone_of_add_sensor()
is invoked, which (using thermal_zone_get_zone_by_name()) iterates over
all registered thermal_zone_devices. The one eventually found will be
returned and propagated to the original caller of
devm_thermal_zone_of_sensor_register(). The state of this returned
device is managed elsewhere (in that device's struct tzd). The "mode"
member you are referring to is thus unrelated.

Regards,

Andrzej

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Re: [PATCH v4 04/11] thermal: Store device mode in struct thermal_zone_device

[Guenter Roeck]

On 5/29/20 10:21 AM, Andrzej Pietrasiewicz wrote:
> Hi again,
> 
> W dniu 29.05.2020 o 18:08, Andrzej Pietrasiewicz pisze:
>> Hi Guenter,
>>
>> W dniu 29.05.2020 o 17:42, Guenter Roeck pisze:
>>> On Thu, May 28, 2020 at 09:20:44PM +0200, Andrzej Pietrasiewicz wrote:
>>>> Prepare for eliminating get_mode().
>>>>
>>> Might be worthwhile to explain (not only in the subject) what you are
>>> doing here.
>>>
>>>> Signed-off-by: Andrzej Pietrasiewicz <andrzej.p@collabora.com>
>>>> ---
>>>>   drivers/acpi/thermal.c                        | 18 ++++++----------
>>>>   .../ethernet/mellanox/mlxsw/core_thermal.c    | 21 +++++++------------
>>>>   drivers/platform/x86/acerhdf.c                | 15 ++++++-------
>>>>   drivers/thermal/da9062-thermal.c              |  6 ++----
>>>>   drivers/thermal/imx_thermal.c                 | 17 +++++++--------
>>>>   .../intel/int340x_thermal/int3400_thermal.c   | 12 +++--------
>>>>   .../thermal/intel/intel_quark_dts_thermal.c   | 16 +++++++-------
>>>>   drivers/thermal/thermal_of.c                  | 10 +++------
>>>
>>> After this patch is applied on top of the thermal 'testing' branch,
>>> there are still local instances of thermal_device_mode in
>>>     drivers/thermal/st/stm_thermal.c
>>>     drivers/thermal/ti-soc-thermal/ti-thermal-common.c
>>>
>>> If there is a reason not to replace those, it might make sense to explain
>>> it here.
>>>
>>
>> My understanding is that these two are sensor devices which are "plugged"
>> into their "parent" thermal zone device. The latter is the "proper" tzd.
>> They both use thermal_zone_of_device_ops instead of thermal_zone_device_ops.
>> The former doesn't even have get_mode(). The thermal core, when it calls
>> get_mode(), operates on the "parent" thermal zone devices.
>>
>> Consequently, the drivers you mention use their "mode" members for
>> their private purpose, not for the purpose of storing the "parent"
>> thermal zone device mode.
>>
> 
> Let me also say it differently.
> 
> Both drivers which you mention use devm_thermal_zone_of_sensor_register().
> It calls thermal_zone_of_sensor_register(), which "will search the list of
> thermal zones described in device tree and look for the zone that refer to
> the sensor device pointed by @dev->of_node as temperature providers. For
> the zone pointing to the sensor node, the sensor will be added to the DT
> thermal zone device." When a match is found thermal_zone_of_add_sensor()
> is invoked, which (using thermal_zone_get_zone_by_name()) iterates over
> all registered thermal_zone_devices. The one eventually found will be
> returned and propagated to the original caller of
> devm_thermal_zone_of_sensor_register(). The state of this returned
> device is managed elsewhere (in that device's struct tzd). The "mode"
> member you are referring to is thus unrelated.
> 

Quite confusing, especially since the ti-soc driver doesn't seem to use
the variable at all after setting it, and the stm_thermal driver uses it
to reflect power status associated with suspend/resume. So, yes, I agree
this is fine.

Thanks,
Guenter

> Regards,
> 
> Andrzej


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[PATCH v4 00/11] Stop monitoring disabled devices

[Andrzej Pietrasiewicz]

There is already a reviewed v3 (not to be confused with RFC v3), which can
be considered for merging:

https://lore.kernel.org/linux-pm/20200423165705.13585-2-andrzej.p@collabora.com/

Let me cite Bartlomiej Zolnierkiewicz:

"I couldn't find the problems with the patch itself (no new issues
being introduced, all changes seem to be improvements over the current
situation).

Also the patch is not small but it also not that big and it mostly
removes the code:

17 files changed, 105 insertions(+), 244 deletions(-)"

There have been raised some concerns about bisectability and about
introducing "initial_mode" member in struct thermal_zone_params.

This v4 series addresses those concerns: it takes a more gradual
approach and uses explicit tzd state initialization, hence there are more
insertions than in v3, and the net effect is -63 lines versus -139 lines
in v3.

Patch 2/11 converts the 3 drivers which don't store their mode in
enum thermal_device_mode to do so. Once that is cleared,
struct thermal_zone_device gains its "mode" member (patch 3/11) and then
all interested drivers change the location where they store their
state: instead of storing it in some variable in a driver, they store it
in struct thermal_zone_device (patch 4/11). Patch 4/11 does not introduce
other changes. Then get_mode() driver method becomes redundant, and so
it is removed (patch 5/11). This is the first part of the groundwork.

The second part of the groundwork is to add (patch 6/11) and use (patch
7/11) helpers for accessing tzd's state from drivers. From this moment
on the drivers don't access tzd->mode directly. Please note that after
patch 4/11 all thermal zone devices have their mode implicitly initialized
to DISABLED, as a result of kzalloc and THERMAL_DEVICE_DISABLED == 0.
This is not a problem from the point of view of polling them, because
their state is not considered when deciding to poll or to cease polling.
In preparation for considering tzd's state when deciding to poll or to
cease polling it ensured (patch 8/11 and some in patch 7/11) that all the
drivers are explicitly initialized with regard to their state.

With all that groundwork in place now it makes sense to modify thermal_core
so that it stops polling DISABLED devices (patch 9/11), which is the
ultimate purpose of this work.

While at it, some set_mode() implementations only change the polling
variables to make the core stop polling their drivers, but that is now
unnecessary and those set_mode() implementations are removed. In other
implementations polling variables modifications are removed. Some other
set_mode() implementations are simplified or removed (patch 10/11).

set_mode() is now only called when tzd's mode is about to change. Actual
setting is performed in thermal_core, in thermal_zone_device_set_mode().
The meaning of set_mode() callback is actually to notify the driver about
the mode being changed and giving the driver a chance to oppose such
a change. To better reflect the purpose of the method it is renamed to
change_mode() (patch 11/11).

Andrzej Pietrasiewicz (11):
  acpi: thermal: Fix error handling in the register function
  thermal: Store thermal mode in a dedicated enum
  thermal: Add current mode to thermal zone device
  thermal: Store device mode in struct thermal_zone_device
  thermal: remove get_mode() operation of drivers
  thermal: Add mode helpers
  thermal: Use mode helpers in drivers
  thermal: Explicitly enable non-changing thermal zone devices
  thermal: core: Stop polling DISABLED thermal devices
  thermal: Simplify or eliminate unnecessary set_mode() methods
  thermal: Rename set_mode() to change_mode()

 drivers/acpi/thermal.c                        | 75 +++++----------
 .../ethernet/chelsio/cxgb4/cxgb4_thermal.c    |  8 ++
 .../ethernet/mellanox/mlxsw/core_thermal.c    | 91 ++++---------------
 drivers/net/wireless/intel/iwlwifi/mvm/tt.c   |  9 +-
 drivers/platform/x86/acerhdf.c                | 33 +++----
 drivers/platform/x86/intel_mid_thermal.c      |  6 ++
 drivers/power/supply/power_supply_core.c      |  9 +-
 drivers/thermal/armada_thermal.c              |  6 ++
 drivers/thermal/da9062-thermal.c              | 16 +---
 drivers/thermal/dove_thermal.c                |  6 ++
 drivers/thermal/hisi_thermal.c                |  6 +-
 drivers/thermal/imx_thermal.c                 | 57 ++++--------
 .../intel/int340x_thermal/int3400_thermal.c   | 43 +++------
 .../int340x_thermal/int340x_thermal_zone.c    |  5 +
 drivers/thermal/intel/intel_pch_thermal.c     |  5 +
 .../thermal/intel/intel_quark_dts_thermal.c   | 34 ++-----
 drivers/thermal/intel/intel_soc_dts_iosf.c    |  3 +
 drivers/thermal/intel/x86_pkg_temp_thermal.c  |  6 ++
 drivers/thermal/kirkwood_thermal.c            |  7 ++
 drivers/thermal/rcar_thermal.c                |  9 +-
 drivers/thermal/rockchip_thermal.c            |  6 +-
 drivers/thermal/spear_thermal.c               |  7 ++
 drivers/thermal/sprd_thermal.c                |  6 +-
 drivers/thermal/st/st_thermal.c               |  5 +
 drivers/thermal/thermal_core.c                | 76 ++++++++++++++--
 drivers/thermal/thermal_of.c                  | 51 ++---------
 drivers/thermal/thermal_sysfs.c               | 37 +-------
 include/linux/thermal.h                       | 19 +++-
 28 files changed, 289 insertions(+), 352 deletions(-)


base-commit: 351f4911a477ae01239c42f771f621d85b06ea10
-- 
2.17.1


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[PATCH v4 04/11] thermal: Store device mode in struct thermal_zone_device

[Andrzej Pietrasiewicz]

Prepare for eliminating get_mode().

Signed-off-by: Andrzej Pietrasiewicz <andrzej.p@collabora.com>
---
 drivers/acpi/thermal.c                        | 18 ++++++----------
 .../ethernet/mellanox/mlxsw/core_thermal.c    | 21 +++++++------------
 drivers/platform/x86/acerhdf.c                | 15 ++++++-------
 drivers/thermal/da9062-thermal.c              |  6 ++----
 drivers/thermal/imx_thermal.c                 | 17 +++++++--------
 .../intel/int340x_thermal/int3400_thermal.c   | 12 +++--------
 .../thermal/intel/intel_quark_dts_thermal.c   | 16 +++++++-------
 drivers/thermal/thermal_of.c                  | 10 +++------
 8 files changed, 44 insertions(+), 71 deletions(-)

diff --git a/drivers/acpi/thermal.c b/drivers/acpi/thermal.c
index fb46070c66d8..4ba273f49d87 100644
--- a/drivers/acpi/thermal.c
+++ b/drivers/acpi/thermal.c
@@ -172,7 +172,6 @@ struct acpi_thermal {
 	struct acpi_thermal_trips trips;
 	struct acpi_handle_list devices;
 	struct thermal_zone_device *thermal_zone;
-	enum thermal_device_mode mode;
 	int kelvin_offset;	/* in millidegrees */
 	struct work_struct thermal_check_work;
 };
@@ -500,7 +499,7 @@ static void acpi_thermal_check(void *data)
 {
 	struct acpi_thermal *tz = data;
 
-	if (tz->mode != THERMAL_DEVICE_ENABLED)
+	if (tz->thermal_zone->mode != THERMAL_DEVICE_ENABLED)
 		return;
 
 	thermal_zone_device_update(tz->thermal_zone,
@@ -529,12 +528,7 @@ static int thermal_get_temp(struct thermal_zone_device *thermal, int *temp)
 static int thermal_get_mode(struct thermal_zone_device *thermal,
 				enum thermal_device_mode *mode)
 {
-	struct acpi_thermal *tz = thermal->devdata;
-
-	if (!tz)
-		return -EINVAL;
-
-	*mode = tz->mode;
+	*mode = thermal->mode;
 
 	return 0;
 }
@@ -556,11 +550,11 @@ static int thermal_set_mode(struct thermal_zone_device *thermal,
 	if (mode == THERMAL_DEVICE_DISABLED)
 		pr_warn("thermal zone will be disabled\n");
 
-	if (mode != tz->mode) {
-		tz->mode = mode;
+	if (mode != tz->thermal_zone->mode) {
+		tz->thermal_zone->mode = mode;
 		ACPI_DEBUG_PRINT((ACPI_DB_INFO,
 			"%s kernel ACPI thermal control\n",
-			tz->mode == THERMAL_DEVICE_ENABLED ?
+			tz->thermal_zone->mode == THERMAL_DEVICE_ENABLED ?
 			"Enable" : "Disable"));
 		acpi_thermal_check(tz);
 	}
@@ -912,7 +906,7 @@ static int acpi_thermal_register_thermal_zone(struct acpi_thermal *tz)
 		goto remove_dev_link;
 	}
 
-	tz->mode = THERMAL_DEVICE_ENABLED;
+	tz->thermal_zone->mode = THERMAL_DEVICE_ENABLED;
 
 	dev_info(&tz->device->dev, "registered as thermal_zone%d\n",
 		 tz->thermal_zone->id);
diff --git a/drivers/net/ethernet/mellanox/mlxsw/core_thermal.c b/drivers/net/ethernet/mellanox/mlxsw/core_thermal.c
index ce0a6837daa3..aa082e8a0b13 100644
--- a/drivers/net/ethernet/mellanox/mlxsw/core_thermal.c
+++ b/drivers/net/ethernet/mellanox/mlxsw/core_thermal.c
@@ -98,7 +98,6 @@ struct mlxsw_thermal_module {
 	struct mlxsw_thermal *parent;
 	struct thermal_zone_device *tzdev;
 	struct mlxsw_thermal_trip trips[MLXSW_THERMAL_NUM_TRIPS];
-	enum thermal_device_mode mode;
 	int module; /* Module or gearbox number */
 };
 
@@ -110,7 +109,6 @@ struct mlxsw_thermal {
 	struct thermal_cooling_device *cdevs[MLXSW_MFCR_PWMS_MAX];
 	u8 cooling_levels[MLXSW_THERMAL_MAX_STATE + 1];
 	struct mlxsw_thermal_trip trips[MLXSW_THERMAL_NUM_TRIPS];
-	enum thermal_device_mode mode;
 	struct mlxsw_thermal_module *tz_module_arr;
 	u8 tz_module_num;
 	struct mlxsw_thermal_module *tz_gearbox_arr;
@@ -280,9 +278,7 @@ static int mlxsw_thermal_unbind(struct thermal_zone_device *tzdev,
 static int mlxsw_thermal_get_mode(struct thermal_zone_device *tzdev,
 				  enum thermal_device_mode *mode)
 {
-	struct mlxsw_thermal *thermal = tzdev->devdata;
-
-	*mode = thermal->mode;
+	*mode = tzdev->mode;
 
 	return 0;
 }
@@ -299,9 +295,9 @@ static int mlxsw_thermal_set_mode(struct thermal_zone_device *tzdev,
 	else
 		tzdev->polling_delay = 0;
 
+	tzdev->mode = mode;
 	mutex_unlock(&tzdev->lock);
 
-	thermal->mode = mode;
 	thermal_zone_device_update(tzdev, THERMAL_EVENT_UNSPECIFIED);
 
 	return 0;
@@ -469,9 +465,7 @@ static int mlxsw_thermal_module_unbind(struct thermal_zone_device *tzdev,
 static int mlxsw_thermal_module_mode_get(struct thermal_zone_device *tzdev,
 					 enum thermal_device_mode *mode)
 {
-	struct mlxsw_thermal_module *tz = tzdev->devdata;
-
-	*mode = tz->mode;
+	*mode = tzdev->mode;
 
 	return 0;
 }
@@ -489,9 +483,10 @@ static int mlxsw_thermal_module_mode_set(struct thermal_zone_device *tzdev,
 	else
 		tzdev->polling_delay = 0;
 
+	tzdev->mode = mode;
+
 	mutex_unlock(&tzdev->lock);
 
-	tz->mode = mode;
 	thermal_zone_device_update(tzdev, THERMAL_EVENT_UNSPECIFIED);
 
 	return 0;
@@ -765,7 +760,7 @@ mlxsw_thermal_module_tz_init(struct mlxsw_thermal_module *module_tz)
 		return err;
 	}
 
-	module_tz->mode = THERMAL_DEVICE_ENABLED;
+	module_tz->tzdev->mode = THERMAL_DEVICE_ENABLED;
 	return 0;
 }
 
@@ -881,7 +876,7 @@ mlxsw_thermal_gearbox_tz_init(struct mlxsw_thermal_module *gearbox_tz)
 	if (IS_ERR(gearbox_tz->tzdev))
 		return PTR_ERR(gearbox_tz->tzdev);
 
-	gearbox_tz->mode = THERMAL_DEVICE_ENABLED;
+	gearbox_tz->tzdev->mode = THERMAL_DEVICE_ENABLED;
 	return 0;
 }
 
@@ -1050,7 +1045,7 @@ int mlxsw_thermal_init(struct mlxsw_core *core,
 	if (err)
 		goto err_unreg_modules_tzdev;
 
-	thermal->mode = THERMAL_DEVICE_ENABLED;
+	thermal->tzdev->mode = THERMAL_DEVICE_ENABLED;
 	*p_thermal = thermal;
 	return 0;
 
diff --git a/drivers/platform/x86/acerhdf.c b/drivers/platform/x86/acerhdf.c
index 830a8b060e74..97b288485837 100644
--- a/drivers/platform/x86/acerhdf.c
+++ b/drivers/platform/x86/acerhdf.c
@@ -68,7 +68,6 @@ static int kernelmode = 1;
 #else
 static int kernelmode;
 #endif
-static enum thermal_device_mode thermal_mode;
 
 static unsigned int interval = 10;
 static unsigned int fanon = 60000;
@@ -398,15 +397,16 @@ static inline void acerhdf_revert_to_bios_mode(void)
 {
 	acerhdf_change_fanstate(ACERHDF_FAN_AUTO);
 	kernelmode = 0;
-	thermal_mode = THERMAL_DEVICE_DISABLED;
-	if (thz_dev)
+	if (thz_dev) {
+		thz_dev->mode = THERMAL_DEVICE_DISABLED;
 		thz_dev->polling_delay = 0;
+	}
 	pr_notice("kernel mode fan control OFF\n");
 }
 static inline void acerhdf_enable_kernelmode(void)
 {
 	kernelmode = 1;
-	thermal_mode = THERMAL_DEVICE_ENABLED;
+	thz_dev->mode = THERMAL_DEVICE_ENABLED;
 
 	thz_dev->polling_delay = interval*1000;
 	thermal_zone_device_update(thz_dev, THERMAL_EVENT_UNSPECIFIED);
@@ -419,7 +419,7 @@ static int acerhdf_get_mode(struct thermal_zone_device *thermal,
 	if (verbose)
 		pr_notice("kernel mode fan control %d\n", kernelmode);
 
-	*mode = thermal_mode;
+	*mode = thermal->mode;
 
 	return 0;
 }
@@ -741,8 +741,6 @@ static int __init acerhdf_register_thermal(void)
 	if (IS_ERR(cl_dev))
 		return -EINVAL;
 
-	thermal_mode = kernelmode ?
-		THERMAL_DEVICE_ENABLED : THERMAL_DEVICE_DISABLED;
 	thz_dev = thermal_zone_device_register("acerhdf", 2, 0, NULL,
 					      &acerhdf_dev_ops,
 					      &acerhdf_zone_params, 0,
@@ -750,6 +748,9 @@ static int __init acerhdf_register_thermal(void)
 	if (IS_ERR(thz_dev))
 		return -EINVAL;
 
+	thz_dev->mode = kernelmode ?
+		THERMAL_DEVICE_ENABLED : THERMAL_DEVICE_DISABLED;
+
 	if (strcmp(thz_dev->governor->name,
 				acerhdf_zone_params.governor_name)) {
 		pr_err("Didn't get thermal governor %s, perhaps not compiled into thermal subsystem.\n",
diff --git a/drivers/thermal/da9062-thermal.c b/drivers/thermal/da9062-thermal.c
index c32709badeda..a14c7981c7c7 100644
--- a/drivers/thermal/da9062-thermal.c
+++ b/drivers/thermal/da9062-thermal.c
@@ -49,7 +49,6 @@ struct da9062_thermal {
 	struct da9062 *hw;
 	struct delayed_work work;
 	struct thermal_zone_device *zone;
-	enum thermal_device_mode mode;
 	struct mutex lock; /* protection for da9062_thermal temperature */
 	int temperature;
 	int irq;
@@ -124,8 +123,7 @@ static irqreturn_t da9062_thermal_irq_handler(int irq, void *data)
 static int da9062_thermal_get_mode(struct thermal_zone_device *z,
 				   enum thermal_device_mode *mode)
 {
-	struct da9062_thermal *thermal = z->devdata;
-	*mode = thermal->mode;
+	*mode = z->mode;
 	return 0;
 }
 
@@ -233,7 +231,6 @@ static int da9062_thermal_probe(struct platform_device *pdev)
 
 	thermal->config = match->data;
 	thermal->hw = chip;
-	thermal->mode = THERMAL_DEVICE_ENABLED;
 	thermal->dev = &pdev->dev;
 
 	INIT_DELAYED_WORK(&thermal->work, da9062_thermal_poll_on);
@@ -248,6 +245,7 @@ static int da9062_thermal_probe(struct platform_device *pdev)
 		ret = PTR_ERR(thermal->zone);
 		goto err;
 	}
+	thermal->zone->mode = THERMAL_DEVICE_ENABLED;
 
 	dev_dbg(&pdev->dev,
 		"TJUNC temperature polling period set at %d ms\n",
diff --git a/drivers/thermal/imx_thermal.c b/drivers/thermal/imx_thermal.c
index e761c9b42217..9a1114d721b6 100644
--- a/drivers/thermal/imx_thermal.c
+++ b/drivers/thermal/imx_thermal.c
@@ -197,7 +197,6 @@ struct imx_thermal_data {
 	struct cpufreq_policy *policy;
 	struct thermal_zone_device *tz;
 	struct thermal_cooling_device *cdev;
-	enum thermal_device_mode mode;
 	struct regmap *tempmon;
 	u32 c1, c2; /* See formula in imx_init_calib() */
 	int temp_passive;
@@ -256,7 +255,7 @@ static int imx_get_temp(struct thermal_zone_device *tz, int *temp)
 	bool wait;
 	u32 val;
 
-	if (data->mode == THERMAL_DEVICE_ENABLED) {
+	if (tz->mode == THERMAL_DEVICE_ENABLED) {
 		/* Check if a measurement is currently in progress */
 		regmap_read(map, soc_data->temp_data, &val);
 		wait = !(val & soc_data->temp_valid_mask);
@@ -283,7 +282,7 @@ static int imx_get_temp(struct thermal_zone_device *tz, int *temp)
 
 	regmap_read(map, soc_data->temp_data, &val);
 
-	if (data->mode != THERMAL_DEVICE_ENABLED) {
+	if (tz->mode != THERMAL_DEVICE_ENABLED) {
 		regmap_write(map, soc_data->sensor_ctrl + REG_CLR,
 			     soc_data->measure_temp_mask);
 		regmap_write(map, soc_data->sensor_ctrl + REG_SET,
@@ -334,9 +333,7 @@ static int imx_get_temp(struct thermal_zone_device *tz, int *temp)
 static int imx_get_mode(struct thermal_zone_device *tz,
 			enum thermal_device_mode *mode)
 {
-	struct imx_thermal_data *data = tz->devdata;
-
-	*mode = data->mode;
+	*mode = tz->mode;
 
 	return 0;
 }
@@ -376,7 +373,7 @@ static int imx_set_mode(struct thermal_zone_device *tz,
 		}
 	}
 
-	data->mode = mode;
+	tz->mode = mode;
 	thermal_zone_device_update(tz, THERMAL_EVENT_UNSPECIFIED);
 
 	return 0;
@@ -831,7 +828,7 @@ static int imx_thermal_probe(struct platform_device *pdev)
 		     data->socdata->measure_temp_mask);
 
 	data->irq_enabled = true;
-	data->mode = THERMAL_DEVICE_ENABLED;
+	data->tz->mode = THERMAL_DEVICE_ENABLED;
 
 	ret = devm_request_threaded_irq(&pdev->dev, data->irq,
 			imx_thermal_alarm_irq, imx_thermal_alarm_irq_thread,
@@ -885,7 +882,7 @@ static int __maybe_unused imx_thermal_suspend(struct device *dev)
 		     data->socdata->measure_temp_mask);
 	regmap_write(map, data->socdata->sensor_ctrl + REG_SET,
 		     data->socdata->power_down_mask);
-	data->mode = THERMAL_DEVICE_DISABLED;
+	data->tz->mode = THERMAL_DEVICE_DISABLED;
 	clk_disable_unprepare(data->thermal_clk);
 
 	return 0;
@@ -905,7 +902,7 @@ static int __maybe_unused imx_thermal_resume(struct device *dev)
 		     data->socdata->power_down_mask);
 	regmap_write(map, data->socdata->sensor_ctrl + REG_SET,
 		     data->socdata->measure_temp_mask);
-	data->mode = THERMAL_DEVICE_ENABLED;
+	data->tz->mode = THERMAL_DEVICE_ENABLED;
 
 	return 0;
 }
diff --git a/drivers/thermal/intel/int340x_thermal/int3400_thermal.c b/drivers/thermal/intel/int340x_thermal/int3400_thermal.c
index e84faaadff87..f65b2fc09198 100644
--- a/drivers/thermal/intel/int340x_thermal/int3400_thermal.c
+++ b/drivers/thermal/intel/int340x_thermal/int3400_thermal.c
@@ -48,7 +48,6 @@ struct int3400_thermal_priv {
 	struct acpi_device *adev;
 	struct platform_device *pdev;
 	struct thermal_zone_device *thermal;
-	enum thermal_device_mode mode;
 	int art_count;
 	struct art *arts;
 	int trt_count;
@@ -381,12 +380,7 @@ static int int3400_thermal_get_temp(struct thermal_zone_device *thermal,
 static int int3400_thermal_get_mode(struct thermal_zone_device *thermal,
 				enum thermal_device_mode *mode)
 {
-	struct int3400_thermal_priv *priv = thermal->devdata;
-
-	if (!priv)
-		return -EINVAL;
-
-	*mode = priv->mode;
+	*mode = thermal->mode;
 
 	return 0;
 }
@@ -404,8 +398,8 @@ static int int3400_thermal_set_mode(struct thermal_zone_device *thermal,
 	    mode != THERMAL_DEVICE_DISABLED)
 		return -EINVAL;
 
-	if (mode != priv->mode) {
-		priv->mode = mode;
+	if (mode != thermal->mode) {
+		thermal->mode = mode;
 		result = int3400_thermal_run_osc(priv->adev->handle,
 						priv->current_uuid_index,
 						mode == THERMAL_DEVICE_ENABLED);
diff --git a/drivers/thermal/intel/intel_quark_dts_thermal.c b/drivers/thermal/intel/intel_quark_dts_thermal.c
index d704fc104cfd..d77cb3df5ade 100644
--- a/drivers/thermal/intel/intel_quark_dts_thermal.c
+++ b/drivers/thermal/intel/intel_quark_dts_thermal.c
@@ -103,7 +103,6 @@ struct soc_sensor_entry {
 	bool locked;
 	u32 store_ptps;
 	u32 store_dts_enable;
-	enum thermal_device_mode mode;
 	struct thermal_zone_device *tzone;
 };
 
@@ -128,7 +127,7 @@ static int soc_dts_enable(struct thermal_zone_device *tzd)
 		return ret;
 
 	if (out & QRK_DTS_ENABLE_BIT) {
-		aux_entry->mode = THERMAL_DEVICE_ENABLED;
+		tzd->mode = THERMAL_DEVICE_ENABLED;
 		return 0;
 	}
 
@@ -139,9 +138,9 @@ static int soc_dts_enable(struct thermal_zone_device *tzd)
 		if (ret)
 			return ret;
 
-		aux_entry->mode = THERMAL_DEVICE_ENABLED;
+		tzd->mode = THERMAL_DEVICE_ENABLED;
 	} else {
-		aux_entry->mode = THERMAL_DEVICE_DISABLED;
+		tzd->mode = THERMAL_DEVICE_DISABLED;
 		pr_info("DTS is locked. Cannot enable DTS\n");
 		ret = -EPERM;
 	}
@@ -161,7 +160,7 @@ static int soc_dts_disable(struct thermal_zone_device *tzd)
 		return ret;
 
 	if (!(out & QRK_DTS_ENABLE_BIT)) {
-		aux_entry->mode = THERMAL_DEVICE_DISABLED;
+		tzd->mode = THERMAL_DEVICE_DISABLED;
 		return 0;
 	}
 
@@ -173,9 +172,9 @@ static int soc_dts_disable(struct thermal_zone_device *tzd)
 		if (ret)
 			return ret;
 
-		aux_entry->mode = THERMAL_DEVICE_DISABLED;
+		tzd->mode = THERMAL_DEVICE_DISABLED;
 	} else {
-		aux_entry->mode = THERMAL_DEVICE_ENABLED;
+		tzd->mode = THERMAL_DEVICE_ENABLED;
 		pr_info("DTS is locked. Cannot disable DTS\n");
 		ret = -EPERM;
 	}
@@ -312,8 +311,7 @@ static int sys_get_curr_temp(struct thermal_zone_device *tzd,
 static int sys_get_mode(struct thermal_zone_device *tzd,
 				enum thermal_device_mode *mode)
 {
-	struct soc_sensor_entry *aux_entry = tzd->devdata;
-	*mode = aux_entry->mode;
+	*mode = tzd->mode;
 	return 0;
 }
 
diff --git a/drivers/thermal/thermal_of.c b/drivers/thermal/thermal_of.c
index ddf88dbe7ba2..c495b1e48ef2 100644
--- a/drivers/thermal/thermal_of.c
+++ b/drivers/thermal/thermal_of.c
@@ -51,7 +51,6 @@ struct __thermal_bind_params {
 
 /**
  * struct __thermal_zone - internal representation of a thermal zone
- * @mode: current thermal zone device mode (enabled/disabled)
  * @passive_delay: polling interval while passive cooling is activated
  * @polling_delay: zone polling interval
  * @slope: slope of the temperature adjustment curve
@@ -65,7 +64,6 @@ struct __thermal_bind_params {
  */
 
 struct __thermal_zone {
-	enum thermal_device_mode mode;
 	int passive_delay;
 	int polling_delay;
 	int slope;
@@ -272,9 +270,7 @@ static int of_thermal_unbind(struct thermal_zone_device *thermal,
 static int of_thermal_get_mode(struct thermal_zone_device *tz,
 			       enum thermal_device_mode *mode)
 {
-	struct __thermal_zone *data = tz->devdata;
-
-	*mode = data->mode;
+	*mode = tz->mode;
 
 	return 0;
 }
@@ -296,7 +292,7 @@ static int of_thermal_set_mode(struct thermal_zone_device *tz,
 
 	mutex_unlock(&tz->lock);
 
-	data->mode = mode;
+	tz->mode = mode;
 	thermal_zone_device_update(tz, THERMAL_EVENT_UNSPECIFIED);
 
 	return 0;
@@ -979,7 +975,6 @@ __init *thermal_of_build_thermal_zone(struct device_node *np)
 
 finish:
 	of_node_put(child);
-	tz->mode = THERMAL_DEVICE_DISABLED;
 
 	return tz;
 
@@ -1134,6 +1129,7 @@ int __init of_parse_thermal_zones(void)
 			of_thermal_free_zone(tz);
 			/* attempting to build remaining zones still */
 		}
+		zone->mode = THERMAL_DEVICE_DISABLED;
 	}
 	of_node_put(np);
 
-- 
2.17.1


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Re: [PATCH v4 04/11] thermal: Store device mode in struct thermal_zone_device

[Peter Kästle]

28. Mai 2020 21:21, "Andrzej Pietrasiewicz" <andrzej.p@collabora.com> schrieb:

> Prepare for eliminating get_mode().
> 
> Signed-off-by: Andrzej Pietrasiewicz <andrzej.p@collabora.com>
> ---

[...]

> drivers/platform/x86/acerhdf.c | 15 ++++++-------

Acked-by: Peter Kaestle <peter@piie.net>

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Re: [PATCH v4 04/11] thermal: Store device mode in struct thermal_zone_device

[Bartlomiej Zolnierkiewicz]

On 5/28/20 9:20 PM, Andrzej Pietrasiewicz wrote:
> Prepare for eliminating get_mode().
> 
> Signed-off-by: Andrzej Pietrasiewicz <andrzej.p@collabora.com>

Reviewed-by: Bartlomiej Zolnierkiewicz <b.zolnierkie@samsung.com>

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

> ---
>  drivers/acpi/thermal.c                        | 18 ++++++----------
>  .../ethernet/mellanox/mlxsw/core_thermal.c    | 21 +++++++------------
>  drivers/platform/x86/acerhdf.c                | 15 ++++++-------
>  drivers/thermal/da9062-thermal.c              |  6 ++----
>  drivers/thermal/imx_thermal.c                 | 17 +++++++--------
>  .../intel/int340x_thermal/int3400_thermal.c   | 12 +++--------
>  .../thermal/intel/intel_quark_dts_thermal.c   | 16 +++++++-------
>  drivers/thermal/thermal_of.c                  | 10 +++------
>  8 files changed, 44 insertions(+), 71 deletions(-)
> 
> diff --git a/drivers/acpi/thermal.c b/drivers/acpi/thermal.c
> index fb46070c66d8..4ba273f49d87 100644
> --- a/drivers/acpi/thermal.c
> +++ b/drivers/acpi/thermal.c
> @@ -172,7 +172,6 @@ struct acpi_thermal {
>  	struct acpi_thermal_trips trips;
>  	struct acpi_handle_list devices;
>  	struct thermal_zone_device *thermal_zone;
> -	enum thermal_device_mode mode;
>  	int kelvin_offset;	/* in millidegrees */
>  	struct work_struct thermal_check_work;
>  };
> @@ -500,7 +499,7 @@ static void acpi_thermal_check(void *data)
>  {
>  	struct acpi_thermal *tz = data;
>  
> -	if (tz->mode != THERMAL_DEVICE_ENABLED)
> +	if (tz->thermal_zone->mode != THERMAL_DEVICE_ENABLED)
>  		return;
>  
>  	thermal_zone_device_update(tz->thermal_zone,
> @@ -529,12 +528,7 @@ static int thermal_get_temp(struct thermal_zone_device *thermal, int *temp)
>  static int thermal_get_mode(struct thermal_zone_device *thermal,
>  				enum thermal_device_mode *mode)
>  {
> -	struct acpi_thermal *tz = thermal->devdata;
> -
> -	if (!tz)
> -		return -EINVAL;
> -
> -	*mode = tz->mode;
> +	*mode = thermal->mode;
>  
>  	return 0;
>  }
> @@ -556,11 +550,11 @@ static int thermal_set_mode(struct thermal_zone_device *thermal,
>  	if (mode == THERMAL_DEVICE_DISABLED)
>  		pr_warn("thermal zone will be disabled\n");
>  
> -	if (mode != tz->mode) {
> -		tz->mode = mode;
> +	if (mode != tz->thermal_zone->mode) {
> +		tz->thermal_zone->mode = mode;
>  		ACPI_DEBUG_PRINT((ACPI_DB_INFO,
>  			"%s kernel ACPI thermal control\n",
> -			tz->mode == THERMAL_DEVICE_ENABLED ?
> +			tz->thermal_zone->mode == THERMAL_DEVICE_ENABLED ?
>  			"Enable" : "Disable"));
>  		acpi_thermal_check(tz);
>  	}
> @@ -912,7 +906,7 @@ static int acpi_thermal_register_thermal_zone(struct acpi_thermal *tz)
>  		goto remove_dev_link;
>  	}
>  
> -	tz->mode = THERMAL_DEVICE_ENABLED;
> +	tz->thermal_zone->mode = THERMAL_DEVICE_ENABLED;
>  
>  	dev_info(&tz->device->dev, "registered as thermal_zone%d\n",
>  		 tz->thermal_zone->id);
> diff --git a/drivers/net/ethernet/mellanox/mlxsw/core_thermal.c b/drivers/net/ethernet/mellanox/mlxsw/core_thermal.c
> index ce0a6837daa3..aa082e8a0b13 100644
> --- a/drivers/net/ethernet/mellanox/mlxsw/core_thermal.c
> +++ b/drivers/net/ethernet/mellanox/mlxsw/core_thermal.c
> @@ -98,7 +98,6 @@ struct mlxsw_thermal_module {
>  	struct mlxsw_thermal *parent;
>  	struct thermal_zone_device *tzdev;
>  	struct mlxsw_thermal_trip trips[MLXSW_THERMAL_NUM_TRIPS];
> -	enum thermal_device_mode mode;
>  	int module; /* Module or gearbox number */
>  };
>  
> @@ -110,7 +109,6 @@ struct mlxsw_thermal {
>  	struct thermal_cooling_device *cdevs[MLXSW_MFCR_PWMS_MAX];
>  	u8 cooling_levels[MLXSW_THERMAL_MAX_STATE + 1];
>  	struct mlxsw_thermal_trip trips[MLXSW_THERMAL_NUM_TRIPS];
> -	enum thermal_device_mode mode;
>  	struct mlxsw_thermal_module *tz_module_arr;
>  	u8 tz_module_num;
>  	struct mlxsw_thermal_module *tz_gearbox_arr;
> @@ -280,9 +278,7 @@ static int mlxsw_thermal_unbind(struct thermal_zone_device *tzdev,
>  static int mlxsw_thermal_get_mode(struct thermal_zone_device *tzdev,
>  				  enum thermal_device_mode *mode)
>  {
> -	struct mlxsw_thermal *thermal = tzdev->devdata;
> -
> -	*mode = thermal->mode;
> +	*mode = tzdev->mode;
>  
>  	return 0;
>  }
> @@ -299,9 +295,9 @@ static int mlxsw_thermal_set_mode(struct thermal_zone_device *tzdev,
>  	else
>  		tzdev->polling_delay = 0;
>  
> +	tzdev->mode = mode;
>  	mutex_unlock(&tzdev->lock);
>  
> -	thermal->mode = mode;
>  	thermal_zone_device_update(tzdev, THERMAL_EVENT_UNSPECIFIED);
>  
>  	return 0;
> @@ -469,9 +465,7 @@ static int mlxsw_thermal_module_unbind(struct thermal_zone_device *tzdev,
>  static int mlxsw_thermal_module_mode_get(struct thermal_zone_device *tzdev,
>  					 enum thermal_device_mode *mode)
>  {
> -	struct mlxsw_thermal_module *tz = tzdev->devdata;
> -
> -	*mode = tz->mode;
> +	*mode = tzdev->mode;
>  
>  	return 0;
>  }
> @@ -489,9 +483,10 @@ static int mlxsw_thermal_module_mode_set(struct thermal_zone_device *tzdev,
>  	else
>  		tzdev->polling_delay = 0;
>  
> +	tzdev->mode = mode;
> +
>  	mutex_unlock(&tzdev->lock);
>  
> -	tz->mode = mode;
>  	thermal_zone_device_update(tzdev, THERMAL_EVENT_UNSPECIFIED);
>  
>  	return 0;
> @@ -765,7 +760,7 @@ mlxsw_thermal_module_tz_init(struct mlxsw_thermal_module *module_tz)
>  		return err;
>  	}
>  
> -	module_tz->mode = THERMAL_DEVICE_ENABLED;
> +	module_tz->tzdev->mode = THERMAL_DEVICE_ENABLED;
>  	return 0;
>  }
>  
> @@ -881,7 +876,7 @@ mlxsw_thermal_gearbox_tz_init(struct mlxsw_thermal_module *gearbox_tz)
>  	if (IS_ERR(gearbox_tz->tzdev))
>  		return PTR_ERR(gearbox_tz->tzdev);
>  
> -	gearbox_tz->mode = THERMAL_DEVICE_ENABLED;
> +	gearbox_tz->tzdev->mode = THERMAL_DEVICE_ENABLED;
>  	return 0;
>  }
>  
> @@ -1050,7 +1045,7 @@ int mlxsw_thermal_init(struct mlxsw_core *core,
>  	if (err)
>  		goto err_unreg_modules_tzdev;
>  
> -	thermal->mode = THERMAL_DEVICE_ENABLED;
> +	thermal->tzdev->mode = THERMAL_DEVICE_ENABLED;
>  	*p_thermal = thermal;
>  	return 0;
>  
> diff --git a/drivers/platform/x86/acerhdf.c b/drivers/platform/x86/acerhdf.c
> index 830a8b060e74..97b288485837 100644
> --- a/drivers/platform/x86/acerhdf.c
> +++ b/drivers/platform/x86/acerhdf.c
> @@ -68,7 +68,6 @@ static int kernelmode = 1;
>  #else
>  static int kernelmode;
>  #endif
> -static enum thermal_device_mode thermal_mode;
>  
>  static unsigned int interval = 10;
>  static unsigned int fanon = 60000;
> @@ -398,15 +397,16 @@ static inline void acerhdf_revert_to_bios_mode(void)
>  {
>  	acerhdf_change_fanstate(ACERHDF_FAN_AUTO);
>  	kernelmode = 0;
> -	thermal_mode = THERMAL_DEVICE_DISABLED;
> -	if (thz_dev)
> +	if (thz_dev) {
> +		thz_dev->mode = THERMAL_DEVICE_DISABLED;
>  		thz_dev->polling_delay = 0;
> +	}
>  	pr_notice("kernel mode fan control OFF\n");
>  }
>  static inline void acerhdf_enable_kernelmode(void)
>  {
>  	kernelmode = 1;
> -	thermal_mode = THERMAL_DEVICE_ENABLED;
> +	thz_dev->mode = THERMAL_DEVICE_ENABLED;
>  
>  	thz_dev->polling_delay = interval*1000;
>  	thermal_zone_device_update(thz_dev, THERMAL_EVENT_UNSPECIFIED);
> @@ -419,7 +419,7 @@ static int acerhdf_get_mode(struct thermal_zone_device *thermal,
>  	if (verbose)
>  		pr_notice("kernel mode fan control %d\n", kernelmode);
>  
> -	*mode = thermal_mode;
> +	*mode = thermal->mode;
>  
>  	return 0;
>  }
> @@ -741,8 +741,6 @@ static int __init acerhdf_register_thermal(void)
>  	if (IS_ERR(cl_dev))
>  		return -EINVAL;
>  
> -	thermal_mode = kernelmode ?
> -		THERMAL_DEVICE_ENABLED : THERMAL_DEVICE_DISABLED;
>  	thz_dev = thermal_zone_device_register("acerhdf", 2, 0, NULL,
>  					      &acerhdf_dev_ops,
>  					      &acerhdf_zone_params, 0,
> @@ -750,6 +748,9 @@ static int __init acerhdf_register_thermal(void)
>  	if (IS_ERR(thz_dev))
>  		return -EINVAL;
>  
> +	thz_dev->mode = kernelmode ?
> +		THERMAL_DEVICE_ENABLED : THERMAL_DEVICE_DISABLED;
> +
>  	if (strcmp(thz_dev->governor->name,
>  				acerhdf_zone_params.governor_name)) {
>  		pr_err("Didn't get thermal governor %s, perhaps not compiled into thermal subsystem.\n",
> diff --git a/drivers/thermal/da9062-thermal.c b/drivers/thermal/da9062-thermal.c
> index c32709badeda..a14c7981c7c7 100644
> --- a/drivers/thermal/da9062-thermal.c
> +++ b/drivers/thermal/da9062-thermal.c
> @@ -49,7 +49,6 @@ struct da9062_thermal {
>  	struct da9062 *hw;
>  	struct delayed_work work;
>  	struct thermal_zone_device *zone;
> -	enum thermal_device_mode mode;
>  	struct mutex lock; /* protection for da9062_thermal temperature */
>  	int temperature;
>  	int irq;
> @@ -124,8 +123,7 @@ static irqreturn_t da9062_thermal_irq_handler(int irq, void *data)
>  static int da9062_thermal_get_mode(struct thermal_zone_device *z,
>  				   enum thermal_device_mode *mode)
>  {
> -	struct da9062_thermal *thermal = z->devdata;
> -	*mode = thermal->mode;
> +	*mode = z->mode;
>  	return 0;
>  }
>  
> @@ -233,7 +231,6 @@ static int da9062_thermal_probe(struct platform_device *pdev)
>  
>  	thermal->config = match->data;
>  	thermal->hw = chip;
> -	thermal->mode = THERMAL_DEVICE_ENABLED;
>  	thermal->dev = &pdev->dev;
>  
>  	INIT_DELAYED_WORK(&thermal->work, da9062_thermal_poll_on);
> @@ -248,6 +245,7 @@ static int da9062_thermal_probe(struct platform_device *pdev)
>  		ret = PTR_ERR(thermal->zone);
>  		goto err;
>  	}
> +	thermal->zone->mode = THERMAL_DEVICE_ENABLED;
>  
>  	dev_dbg(&pdev->dev,
>  		"TJUNC temperature polling period set at %d ms\n",
> diff --git a/drivers/thermal/imx_thermal.c b/drivers/thermal/imx_thermal.c
> index e761c9b42217..9a1114d721b6 100644
> --- a/drivers/thermal/imx_thermal.c
> +++ b/drivers/thermal/imx_thermal.c
> @@ -197,7 +197,6 @@ struct imx_thermal_data {
>  	struct cpufreq_policy *policy;
>  	struct thermal_zone_device *tz;
>  	struct thermal_cooling_device *cdev;
> -	enum thermal_device_mode mode;
>  	struct regmap *tempmon;
>  	u32 c1, c2; /* See formula in imx_init_calib() */
>  	int temp_passive;
> @@ -256,7 +255,7 @@ static int imx_get_temp(struct thermal_zone_device *tz, int *temp)
>  	bool wait;
>  	u32 val;
>  
> -	if (data->mode == THERMAL_DEVICE_ENABLED) {
> +	if (tz->mode == THERMAL_DEVICE_ENABLED) {
>  		/* Check if a measurement is currently in progress */
>  		regmap_read(map, soc_data->temp_data, &val);
>  		wait = !(val & soc_data->temp_valid_mask);
> @@ -283,7 +282,7 @@ static int imx_get_temp(struct thermal_zone_device *tz, int *temp)
>  
>  	regmap_read(map, soc_data->temp_data, &val);
>  
> -	if (data->mode != THERMAL_DEVICE_ENABLED) {
> +	if (tz->mode != THERMAL_DEVICE_ENABLED) {
>  		regmap_write(map, soc_data->sensor_ctrl + REG_CLR,
>  			     soc_data->measure_temp_mask);
>  		regmap_write(map, soc_data->sensor_ctrl + REG_SET,
> @@ -334,9 +333,7 @@ static int imx_get_temp(struct thermal_zone_device *tz, int *temp)
>  static int imx_get_mode(struct thermal_zone_device *tz,
>  			enum thermal_device_mode *mode)
>  {
> -	struct imx_thermal_data *data = tz->devdata;
> -
> -	*mode = data->mode;
> +	*mode = tz->mode;
>  
>  	return 0;
>  }
> @@ -376,7 +373,7 @@ static int imx_set_mode(struct thermal_zone_device *tz,
>  		}
>  	}
>  
> -	data->mode = mode;
> +	tz->mode = mode;
>  	thermal_zone_device_update(tz, THERMAL_EVENT_UNSPECIFIED);
>  
>  	return 0;
> @@ -831,7 +828,7 @@ static int imx_thermal_probe(struct platform_device *pdev)
>  		     data->socdata->measure_temp_mask);
>  
>  	data->irq_enabled = true;
> -	data->mode = THERMAL_DEVICE_ENABLED;
> +	data->tz->mode = THERMAL_DEVICE_ENABLED;
>  
>  	ret = devm_request_threaded_irq(&pdev->dev, data->irq,
>  			imx_thermal_alarm_irq, imx_thermal_alarm_irq_thread,
> @@ -885,7 +882,7 @@ static int __maybe_unused imx_thermal_suspend(struct device *dev)
>  		     data->socdata->measure_temp_mask);
>  	regmap_write(map, data->socdata->sensor_ctrl + REG_SET,
>  		     data->socdata->power_down_mask);
> -	data->mode = THERMAL_DEVICE_DISABLED;
> +	data->tz->mode = THERMAL_DEVICE_DISABLED;
>  	clk_disable_unprepare(data->thermal_clk);
>  
>  	return 0;
> @@ -905,7 +902,7 @@ static int __maybe_unused imx_thermal_resume(struct device *dev)
>  		     data->socdata->power_down_mask);
>  	regmap_write(map, data->socdata->sensor_ctrl + REG_SET,
>  		     data->socdata->measure_temp_mask);
> -	data->mode = THERMAL_DEVICE_ENABLED;
> +	data->tz->mode = THERMAL_DEVICE_ENABLED;
>  
>  	return 0;
>  }
> diff --git a/drivers/thermal/intel/int340x_thermal/int3400_thermal.c b/drivers/thermal/intel/int340x_thermal/int3400_thermal.c
> index e84faaadff87..f65b2fc09198 100644
> --- a/drivers/thermal/intel/int340x_thermal/int3400_thermal.c
> +++ b/drivers/thermal/intel/int340x_thermal/int3400_thermal.c
> @@ -48,7 +48,6 @@ struct int3400_thermal_priv {
>  	struct acpi_device *adev;
>  	struct platform_device *pdev;
>  	struct thermal_zone_device *thermal;
> -	enum thermal_device_mode mode;
>  	int art_count;
>  	struct art *arts;
>  	int trt_count;
> @@ -381,12 +380,7 @@ static int int3400_thermal_get_temp(struct thermal_zone_device *thermal,
>  static int int3400_thermal_get_mode(struct thermal_zone_device *thermal,
>  				enum thermal_device_mode *mode)
>  {
> -	struct int3400_thermal_priv *priv = thermal->devdata;
> -
> -	if (!priv)
> -		return -EINVAL;
> -
> -	*mode = priv->mode;
> +	*mode = thermal->mode;
>  
>  	return 0;
>  }
> @@ -404,8 +398,8 @@ static int int3400_thermal_set_mode(struct thermal_zone_device *thermal,
>  	    mode != THERMAL_DEVICE_DISABLED)
>  		return -EINVAL;
>  
> -	if (mode != priv->mode) {
> -		priv->mode = mode;
> +	if (mode != thermal->mode) {
> +		thermal->mode = mode;
>  		result = int3400_thermal_run_osc(priv->adev->handle,
>  						priv->current_uuid_index,
>  						mode == THERMAL_DEVICE_ENABLED);
> diff --git a/drivers/thermal/intel/intel_quark_dts_thermal.c b/drivers/thermal/intel/intel_quark_dts_thermal.c
> index d704fc104cfd..d77cb3df5ade 100644
> --- a/drivers/thermal/intel/intel_quark_dts_thermal.c
> +++ b/drivers/thermal/intel/intel_quark_dts_thermal.c
> @@ -103,7 +103,6 @@ struct soc_sensor_entry {
>  	bool locked;
>  	u32 store_ptps;
>  	u32 store_dts_enable;
> -	enum thermal_device_mode mode;
>  	struct thermal_zone_device *tzone;
>  };
>  
> @@ -128,7 +127,7 @@ static int soc_dts_enable(struct thermal_zone_device *tzd)
>  		return ret;
>  
>  	if (out & QRK_DTS_ENABLE_BIT) {
> -		aux_entry->mode = THERMAL_DEVICE_ENABLED;
> +		tzd->mode = THERMAL_DEVICE_ENABLED;
>  		return 0;
>  	}
>  
> @@ -139,9 +138,9 @@ static int soc_dts_enable(struct thermal_zone_device *tzd)
>  		if (ret)
>  			return ret;
>  
> -		aux_entry->mode = THERMAL_DEVICE_ENABLED;
> +		tzd->mode = THERMAL_DEVICE_ENABLED;
>  	} else {
> -		aux_entry->mode = THERMAL_DEVICE_DISABLED;
> +		tzd->mode = THERMAL_DEVICE_DISABLED;
>  		pr_info("DTS is locked. Cannot enable DTS\n");
>  		ret = -EPERM;
>  	}
> @@ -161,7 +160,7 @@ static int soc_dts_disable(struct thermal_zone_device *tzd)
>  		return ret;
>  
>  	if (!(out & QRK_DTS_ENABLE_BIT)) {
> -		aux_entry->mode = THERMAL_DEVICE_DISABLED;
> +		tzd->mode = THERMAL_DEVICE_DISABLED;
>  		return 0;
>  	}
>  
> @@ -173,9 +172,9 @@ static int soc_dts_disable(struct thermal_zone_device *tzd)
>  		if (ret)
>  			return ret;
>  
> -		aux_entry->mode = THERMAL_DEVICE_DISABLED;
> +		tzd->mode = THERMAL_DEVICE_DISABLED;
>  	} else {
> -		aux_entry->mode = THERMAL_DEVICE_ENABLED;
> +		tzd->mode = THERMAL_DEVICE_ENABLED;
>  		pr_info("DTS is locked. Cannot disable DTS\n");
>  		ret = -EPERM;
>  	}
> @@ -312,8 +311,7 @@ static int sys_get_curr_temp(struct thermal_zone_device *tzd,
>  static int sys_get_mode(struct thermal_zone_device *tzd,
>  				enum thermal_device_mode *mode)
>  {
> -	struct soc_sensor_entry *aux_entry = tzd->devdata;
> -	*mode = aux_entry->mode;
> +	*mode = tzd->mode;
>  	return 0;
>  }
>  
> diff --git a/drivers/thermal/thermal_of.c b/drivers/thermal/thermal_of.c
> index ddf88dbe7ba2..c495b1e48ef2 100644
> --- a/drivers/thermal/thermal_of.c
> +++ b/drivers/thermal/thermal_of.c
> @@ -51,7 +51,6 @@ struct __thermal_bind_params {
>  
>  /**
>   * struct __thermal_zone - internal representation of a thermal zone
> - * @mode: current thermal zone device mode (enabled/disabled)
>   * @passive_delay: polling interval while passive cooling is activated
>   * @polling_delay: zone polling interval
>   * @slope: slope of the temperature adjustment curve
> @@ -65,7 +64,6 @@ struct __thermal_bind_params {
>   */
>  
>  struct __thermal_zone {
> -	enum thermal_device_mode mode;
>  	int passive_delay;
>  	int polling_delay;
>  	int slope;
> @@ -272,9 +270,7 @@ static int of_thermal_unbind(struct thermal_zone_device *thermal,
>  static int of_thermal_get_mode(struct thermal_zone_device *tz,
>  			       enum thermal_device_mode *mode)
>  {
> -	struct __thermal_zone *data = tz->devdata;
> -
> -	*mode = data->mode;
> +	*mode = tz->mode;
>  
>  	return 0;
>  }
> @@ -296,7 +292,7 @@ static int of_thermal_set_mode(struct thermal_zone_device *tz,
>  
>  	mutex_unlock(&tz->lock);
>  
> -	data->mode = mode;
> +	tz->mode = mode;
>  	thermal_zone_device_update(tz, THERMAL_EVENT_UNSPECIFIED);
>  
>  	return 0;
> @@ -979,7 +975,6 @@ __init *thermal_of_build_thermal_zone(struct device_node *np)
>  
>  finish:
>  	of_node_put(child);
> -	tz->mode = THERMAL_DEVICE_DISABLED;
>  
>  	return tz;
>  
> @@ -1134,6 +1129,7 @@ int __init of_parse_thermal_zones(void)
>  			of_thermal_free_zone(tz);
>  			/* attempting to build remaining zones still */
>  		}
> +		zone->mode = THERMAL_DEVICE_DISABLED;
>  	}
>  	of_node_put(np);
>  
> 

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