Re: [PATCH v7 07/11] thermal: Use mode helpers in drivers

Bartlomiej Zolnierkiewicz
2020-06-29T19:03:03Z

On 6/29/20 2:29 PM, Andrzej Pietrasiewicz wrote:
> Use thermal_zone_device_{en|dis}able() and thermal_zone_device_is_enabled().
>
> Consequently, all set_mode() implementations in drivers:
>
> - can stop modifying tzd's "mode" member,
> - shall stop taking tzd's lock, as it is taken in the helpers
> - shall stop calling thermal_zone_device_update() as it is called in the
> helpers
> - can assume they are called when the mode truly changes, so checks to
> verify that can be dropped
>
> Not providing set_mode() by a driver no longer prevents the core from
> being able to set tzd's mode, so the relevant check in mode_store() is
> removed.
>
> Other comments:
>
> - acpi/thermal.c: tz->thermal_zone->mode will be updated only after we
> return from set_mode(), so use function parameter in thermal_set_mode()
> instead, no need to call acpi_thermal_check() in set_mode()
> - thermal/imx_thermal.c: regmap writes and mode assignment are done in
> thermal_zone_device_{en|dis}able() and set_mode() callback
> - thermal/intel/intel_quark_dts_thermal.c: soc_dts_{en|dis}able() are a
> part of set_mode() callback, so they don't need to modify tzd->mode, and
> don't need to fall back to the opposite mode if unsuccessful, as the return
> value will be propagated to thermal_zone_device_{en|dis}able() and
> ultimately tzd's member will not be changed in thermal_zone_device_set_mode().
> - thermal/of-thermal.c: no need to set zone->mode to DISABLED in
> of_parse_thermal_zones() as a tzd is kzalloc'ed so mode is DISABLED anyway
>
> Signed-off-by: Andrzej Pietrasiewicz <andrzej.p@collabora.com>
> [for acerhdf]
> Acked-by: Peter Kaestle <peter@piie.net>

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

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

> ---
> drivers/acpi/thermal.c | 21 ++++++-----
> .../ethernet/mellanox/mlxsw/core_thermal.c | 37 +++++++++----------
> drivers/platform/x86/acerhdf.c | 17 +++++----
> drivers/thermal/da9062-thermal.c | 6 ++-
> drivers/thermal/hisi_thermal.c | 6 ++-
> drivers/thermal/imx_thermal.c | 33 +++++++----------
> .../intel/int340x_thermal/int3400_thermal.c | 5 +--
> .../thermal/intel/intel_quark_dts_thermal.c | 18 ++-------
> drivers/thermal/rockchip_thermal.c | 6 ++-
> drivers/thermal/sprd_thermal.c | 6 ++-
> drivers/thermal/thermal_core.c | 2 +-
> drivers/thermal/thermal_of.c | 10 +----
> drivers/thermal/thermal_sysfs.c | 11 ++----
> 13 files changed, 80 insertions(+), 98 deletions(-)
>
> diff --git a/drivers/acpi/thermal.c b/drivers/acpi/thermal.c
> index 592be97c4456..52b6cda1bcc3 100644
> --- a/drivers/acpi/thermal.c
> +++ b/drivers/acpi/thermal.c
> @@ -499,7 +499,7 @@ static void acpi_thermal_check(void *data)
> {
> struct acpi_thermal *tz = data;
>
> - if (tz->thermal_zone->mode != THERMAL_DEVICE_ENABLED)
> + if (!thermal_zone_device_is_enabled(tz->thermal_zone))
> return;
>
> thermal_zone_device_update(tz->thermal_zone,
> @@ -542,14 +542,11 @@ 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->thermal_zone->mode) {
> - tz->thermal_zone->mode = mode;
> - ACPI_DEBUG_PRINT((ACPI_DB_INFO,
> - "%s kernel ACPI thermal control\n",
> - tz->thermal_zone->mode == THERMAL_DEVICE_ENABLED ?
> - "Enable" : "Disable"));
> - acpi_thermal_check(tz);
> - }
> + ACPI_DEBUG_PRINT((ACPI_DB_INFO,
> + "%s kernel ACPI thermal control\n",
> + mode == THERMAL_DEVICE_ENABLED ?
> + "Enable" : "Disable"));
> +
> return 0;
> }
>
> @@ -897,13 +894,17 @@ static int acpi_thermal_register_thermal_zone(struct acpi_thermal *tz)
> goto remove_dev_link;
> }
>
> - tz->thermal_zone->mode = THERMAL_DEVICE_ENABLED;
> + result = thermal_zone_device_enable(tz->thermal_zone);
> + if (result)
> + goto acpi_bus_detach;
>
> dev_info(&tz->device->dev, "registered as thermal_zone%d\n",
> tz->thermal_zone->id);
>
> return 0;
>
> +acpi_bus_detach:
> + acpi_bus_detach_private_data(tz->device->handle);
> remove_dev_link:
> sysfs_remove_link(&tz->thermal_zone->device.kobj, "device");
> remove_tz_link:
> diff --git a/drivers/net/ethernet/mellanox/mlxsw/core_thermal.c b/drivers/net/ethernet/mellanox/mlxsw/core_thermal.c
> index ad61b2db30b8..4fb73d0fd167 100644
> --- a/drivers/net/ethernet/mellanox/mlxsw/core_thermal.c
> +++ b/drivers/net/ethernet/mellanox/mlxsw/core_thermal.c
> @@ -280,18 +280,11 @@ static int mlxsw_thermal_set_mode(struct thermal_zone_device *tzdev,
> {
> struct mlxsw_thermal *thermal = tzdev->devdata;
>
> - mutex_lock(&tzdev->lock);
> -
> if (mode == THERMAL_DEVICE_ENABLED)
> tzdev->polling_delay = thermal->polling_delay;
> else
> tzdev->polling_delay = 0;
>
> - tzdev->mode = mode;
> - mutex_unlock(&tzdev->lock);
> -
> - thermal_zone_device_update(tzdev, THERMAL_EVENT_UNSPECIFIED);
> -
> return 0;
> }
>
> @@ -458,19 +451,11 @@ static int mlxsw_thermal_module_mode_set(struct thermal_zone_device *tzdev,
> struct mlxsw_thermal_module *tz = tzdev->devdata;
> struct mlxsw_thermal *thermal = tz->parent;
>
> - mutex_lock(&tzdev->lock);
> -
> if (mode == THERMAL_DEVICE_ENABLED)
> tzdev->polling_delay = thermal->polling_delay;
> else
> tzdev->polling_delay = 0;
>
> - tzdev->mode = mode;
> -
> - mutex_unlock(&tzdev->lock);
> -
> - thermal_zone_device_update(tzdev, THERMAL_EVENT_UNSPECIFIED);
> -
> return 0;
> }
>
> @@ -756,8 +741,11 @@ mlxsw_thermal_module_tz_init(struct mlxsw_thermal_module *module_tz)
> return err;
> }
>
> - module_tz->tzdev->mode = THERMAL_DEVICE_ENABLED;
> - return 0;
> + err = thermal_zone_device_enable(module_tz->tzdev);
> + if (err)
> + thermal_zone_device_unregister(module_tz->tzdev);
> +
> + return err;
> }
>
> static void mlxsw_thermal_module_tz_fini(struct thermal_zone_device *tzdev)
> @@ -860,6 +848,7 @@ static int
> mlxsw_thermal_gearbox_tz_init(struct mlxsw_thermal_module *gearbox_tz)
> {
> char tz_name[MLXSW_THERMAL_ZONE_MAX_NAME];
> + int ret;
>
> snprintf(tz_name, sizeof(tz_name), "mlxsw-gearbox%d",
> gearbox_tz->module + 1);
> @@ -872,8 +861,11 @@ 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->tzdev->mode = THERMAL_DEVICE_ENABLED;
> - return 0;
> + ret = thermal_zone_device_enable(gearbox_tz->tzdev);
> + if (ret)
> + thermal_zone_device_unregister(gearbox_tz->tzdev);
> +
> + return ret;
> }
>
> static void
> @@ -1041,10 +1033,15 @@ int mlxsw_thermal_init(struct mlxsw_core *core,
> if (err)
> goto err_unreg_modules_tzdev;
>
> - thermal->tzdev->mode = THERMAL_DEVICE_ENABLED;
> + err = thermal_zone_device_enable(thermal->tzdev);
> + if (err)
> + goto err_unreg_gearboxes;
> +
> *p_thermal = thermal;
> return 0;
>
> +err_unreg_gearboxes:
> + mlxsw_thermal_gearboxes_fini(thermal);
> err_unreg_modules_tzdev:
> mlxsw_thermal_modules_fini(thermal);
> err_unreg_tzdev:
> diff --git a/drivers/platform/x86/acerhdf.c b/drivers/platform/x86/acerhdf.c
> index 58c4e1caaa09..8fe0ecb6a626 100644
> --- a/drivers/platform/x86/acerhdf.c
> +++ b/drivers/platform/x86/acerhdf.c
> @@ -397,19 +397,16 @@ static inline void acerhdf_revert_to_bios_mode(void)
> {
> acerhdf_change_fanstate(ACERHDF_FAN_AUTO);
> kernelmode = 0;
> - if (thz_dev) {
> - thz_dev->mode = THERMAL_DEVICE_DISABLED;
> + if (thz_dev)
> thz_dev->polling_delay = 0;
> - }
> +
> pr_notice("kernel mode fan control OFF\n");
> }
> static inline void acerhdf_enable_kernelmode(void)
> {
> kernelmode = 1;
> - thz_dev->mode = THERMAL_DEVICE_ENABLED;
>
> thz_dev->polling_delay = interval*1000;
> - thermal_zone_device_update(thz_dev, THERMAL_EVENT_UNSPECIFIED);
> pr_notice("kernel mode fan control ON\n");
> }
>
> @@ -723,6 +720,8 @@ static void acerhdf_unregister_platform(void)
>
> static int __init acerhdf_register_thermal(void)
> {
> + int ret;
> +
> cl_dev = thermal_cooling_device_register("acerhdf-fan", NULL,
> &acerhdf_cooling_ops);
>
> @@ -736,8 +735,12 @@ 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 (kernelmode)
> + ret = thermal_zone_device_enable(thz_dev);
> + else
> + ret = thermal_zone_device_disable(thz_dev);
> + if (ret)
> + return ret;
>
> if (strcmp(thz_dev->governor->name,
> acerhdf_zone_params.governor_name)) {
> diff --git a/drivers/thermal/da9062-thermal.c b/drivers/thermal/da9062-thermal.c
> index a7ac8afb063e..4d74994f160a 100644
> --- a/drivers/thermal/da9062-thermal.c
> +++ b/drivers/thermal/da9062-thermal.c
> @@ -237,7 +237,11 @@ static int da9062_thermal_probe(struct platform_device *pdev)
> ret = PTR_ERR(thermal->zone);
> goto err;
> }
> - thermal->zone->mode = THERMAL_DEVICE_ENABLED;
> + ret = thermal_zone_device_enable(thermal->zone);
> + if (ret) {
> + dev_err(&pdev->dev, "Cannot enable thermal zone device\n");
> + goto err_zone;
> + }
>
> dev_dbg(&pdev->dev,
> "TJUNC temperature polling period set at %d ms\n",
> diff --git a/drivers/thermal/hisi_thermal.c b/drivers/thermal/hisi_thermal.c
> index 2d26ae80e202..ee05950afd2f 100644
> --- a/drivers/thermal/hisi_thermal.c
> +++ b/drivers/thermal/hisi_thermal.c
> @@ -549,8 +549,10 @@ static void hisi_thermal_toggle_sensor(struct hisi_thermal_sensor *sensor,
> {
> struct thermal_zone_device *tzd = sensor->tzd;
>
> - tzd->ops->set_mode(tzd,
> - on ? THERMAL_DEVICE_ENABLED : THERMAL_DEVICE_DISABLED);
> + if (on)
> + thermal_zone_device_enable(tzd);
> + else
> + thermal_zone_device_disable(tzd);
> }
>
> static int hisi_thermal_probe(struct platform_device *pdev)
> diff --git a/drivers/thermal/imx_thermal.c b/drivers/thermal/imx_thermal.c
> index 2c7ee5da608a..53abb1be1cba 100644
> --- a/drivers/thermal/imx_thermal.c
> +++ b/drivers/thermal/imx_thermal.c
> @@ -255,7 +255,7 @@ static int imx_get_temp(struct thermal_zone_device *tz, int *temp)
> bool wait;
> u32 val;
>
> - if (tz->mode == THERMAL_DEVICE_ENABLED) {
> + if (thermal_zone_device_is_enabled(tz)) {
> /* Check if a measurement is currently in progress */
> regmap_read(map, soc_data->temp_data, &val);
> wait = !(val & soc_data->temp_valid_mask);
> @@ -282,7 +282,7 @@ static int imx_get_temp(struct thermal_zone_device *tz, int *temp)
>
> regmap_read(map, soc_data->temp_data, &val);
>
> - if (tz->mode != THERMAL_DEVICE_ENABLED) {
> + if (!thermal_zone_device_is_enabled(tz)) {
> regmap_write(map, soc_data->sensor_ctrl + REG_CLR,
> soc_data->measure_temp_mask);
> regmap_write(map, soc_data->sensor_ctrl + REG_SET,
> @@ -365,9 +365,6 @@ static int imx_set_mode(struct thermal_zone_device *tz,
> }
> }
>
> - tz->mode = mode;
> - thermal_zone_device_update(tz, THERMAL_EVENT_UNSPECIFIED);
> -
> return 0;
> }
>
> @@ -819,7 +816,9 @@ static int imx_thermal_probe(struct platform_device *pdev)
> data->socdata->measure_temp_mask);
>
> data->irq_enabled = true;
> - data->tz->mode = THERMAL_DEVICE_ENABLED;
> + ret = thermal_zone_device_enable(data->tz);
> + if (ret)
> + goto thermal_zone_unregister;
>
> ret = devm_request_threaded_irq(&pdev->dev, data->irq,
> imx_thermal_alarm_irq, imx_thermal_alarm_irq_thread,
> @@ -861,19 +860,18 @@ static int imx_thermal_remove(struct platform_device *pdev)
> static int __maybe_unused imx_thermal_suspend(struct device *dev)
> {
> struct imx_thermal_data *data = dev_get_drvdata(dev);
> - struct regmap *map = data->tempmon;
> + int ret;
>
> /*
> * Need to disable thermal sensor, otherwise, when thermal core
> * try to get temperature before thermal sensor resume, a wrong
> * temperature will be read as the thermal sensor is powered
> - * down.
> + * down. This is done in set_mode() operation called from
> + * thermal_zone_device_disable()
> */
> - regmap_write(map, data->socdata->sensor_ctrl + REG_CLR,
> - data->socdata->measure_temp_mask);
> - regmap_write(map, data->socdata->sensor_ctrl + REG_SET,
> - data->socdata->power_down_mask);
> - data->tz->mode = THERMAL_DEVICE_DISABLED;
> + ret = thermal_zone_device_disable(data->tz);
> + if (ret)
> + return ret;
> clk_disable_unprepare(data->thermal_clk);
>
> return 0;
> @@ -882,18 +880,15 @@ static int __maybe_unused imx_thermal_suspend(struct device *dev)
> static int __maybe_unused imx_thermal_resume(struct device *dev)
> {
> struct imx_thermal_data *data = dev_get_drvdata(dev);
> - struct regmap *map = data->tempmon;
> int ret;
>
> ret = clk_prepare_enable(data->thermal_clk);
> if (ret)
> return ret;
> /* Enabled thermal sensor after resume */
> - regmap_write(map, data->socdata->sensor_ctrl + REG_CLR,
> - data->socdata->power_down_mask);
> - regmap_write(map, data->socdata->sensor_ctrl + REG_SET,
> - data->socdata->measure_temp_mask);
> - data->tz->mode = THERMAL_DEVICE_ENABLED;
> + ret = thermal_zone_device_enable(data->tz);
> + if (ret)
> + return ret;
>
> return 0;
> }
> diff --git a/drivers/thermal/intel/int340x_thermal/int3400_thermal.c b/drivers/thermal/intel/int340x_thermal/int3400_thermal.c
> index 9a622aaf29dd..3c0397a29b8c 100644
> --- a/drivers/thermal/intel/int340x_thermal/int3400_thermal.c
> +++ b/drivers/thermal/intel/int340x_thermal/int3400_thermal.c
> @@ -390,12 +390,11 @@ static int int3400_thermal_set_mode(struct thermal_zone_device *thermal,
> mode != THERMAL_DEVICE_DISABLED)
> return -EINVAL;
>
> - if (mode != thermal->mode) {
> - thermal->mode = mode;
> + if (mode != thermal->mode)
> result = int3400_thermal_run_osc(priv->adev->handle,
> priv->current_uuid_index,
> mode == THERMAL_DEVICE_ENABLED);
> - }
> +
>
> evaluate_odvp(priv);
>
> diff --git a/drivers/thermal/intel/intel_quark_dts_thermal.c b/drivers/thermal/intel/intel_quark_dts_thermal.c
> index c4879b4bfbf1..e29c3e330b17 100644
> --- a/drivers/thermal/intel/intel_quark_dts_thermal.c
> +++ b/drivers/thermal/intel/intel_quark_dts_thermal.c
> @@ -126,10 +126,8 @@ static int soc_dts_enable(struct thermal_zone_device *tzd)
> if (ret)
> return ret;
>
> - if (out & QRK_DTS_ENABLE_BIT) {
> - tzd->mode = THERMAL_DEVICE_ENABLED;
> + if (out & QRK_DTS_ENABLE_BIT)
> return 0;
> - }
>
> if (!aux_entry->locked) {
> out |= QRK_DTS_ENABLE_BIT;
> @@ -137,10 +135,7 @@ static int soc_dts_enable(struct thermal_zone_device *tzd)
> QRK_DTS_REG_OFFSET_ENABLE, out);
> if (ret)
> return ret;
> -
> - tzd->mode = THERMAL_DEVICE_ENABLED;
> } else {
> - tzd->mode = THERMAL_DEVICE_DISABLED;
> pr_info("DTS is locked. Cannot enable DTS\n");
> ret = -EPERM;
> }
> @@ -159,10 +154,8 @@ static int soc_dts_disable(struct thermal_zone_device *tzd)
> if (ret)
> return ret;
>
> - if (!(out & QRK_DTS_ENABLE_BIT)) {
> - tzd->mode = THERMAL_DEVICE_DISABLED;
> + if (!(out & QRK_DTS_ENABLE_BIT))
> return 0;
> - }
>
> if (!aux_entry->locked) {
> out &= ~QRK_DTS_ENABLE_BIT;
> @@ -171,10 +164,7 @@ static int soc_dts_disable(struct thermal_zone_device *tzd)
>
> if (ret)
> return ret;
> -
> - tzd->mode = THERMAL_DEVICE_DISABLED;
> } else {
> - tzd->mode = THERMAL_DEVICE_ENABLED;
> pr_info("DTS is locked. Cannot disable DTS\n");
> ret = -EPERM;
> }
> @@ -404,9 +394,7 @@ static struct soc_sensor_entry *alloc_soc_dts(void)
> goto err_ret;
> }
>
> - mutex_lock(&dts_update_mutex);
> - err = soc_dts_enable(aux_entry->tzone);
> - mutex_unlock(&dts_update_mutex);
> + err = thermal_zone_device_enable(aux_entry->tzone);
> if (err)
> goto err_aux_status;
>
> diff --git a/drivers/thermal/rockchip_thermal.c b/drivers/thermal/rockchip_thermal.c
> index 15a71ecc916c..aa9e0e31ef98 100644
> --- a/drivers/thermal/rockchip_thermal.c
> +++ b/drivers/thermal/rockchip_thermal.c
> @@ -1068,8 +1068,10 @@ rockchip_thermal_toggle_sensor(struct rockchip_thermal_sensor *sensor, bool on)
> {
> struct thermal_zone_device *tzd = sensor->tzd;
>
> - tzd->ops->set_mode(tzd,
> - on ? THERMAL_DEVICE_ENABLED : THERMAL_DEVICE_DISABLED);
> + if (on)
> + thermal_zone_device_enable(tzd);
> + else
> + thermal_zone_device_disable(tzd);
> }
>
> static irqreturn_t rockchip_thermal_alarm_irq_thread(int irq, void *dev)
> diff --git a/drivers/thermal/sprd_thermal.c b/drivers/thermal/sprd_thermal.c
> index a340374e8c51..58f995b0f804 100644
> --- a/drivers/thermal/sprd_thermal.c
> +++ b/drivers/thermal/sprd_thermal.c
> @@ -322,8 +322,10 @@ static void sprd_thm_toggle_sensor(struct sprd_thermal_sensor *sen, bool on)
> {
> struct thermal_zone_device *tzd = sen->tzd;
>
> - tzd->ops->set_mode(tzd,
> - on ? THERMAL_DEVICE_ENABLED : THERMAL_DEVICE_DISABLED);
> + if (on)
> + thermal_zone_device_enable(tzd);
> + else
> + thermal_zone_device_disable(tzd);
> }
>
> static int sprd_thm_probe(struct platform_device *pdev)
> diff --git a/drivers/thermal/thermal_core.c b/drivers/thermal/thermal_core.c
> index f02c57c986f0..52d136780577 100644
> --- a/drivers/thermal/thermal_core.c
> +++ b/drivers/thermal/thermal_core.c
> @@ -1521,7 +1521,7 @@ static int thermal_pm_notify(struct notifier_block *nb,
> case PM_POST_SUSPEND:
> atomic_set(&in_suspend, 0);
> list_for_each_entry(tz, &thermal_tz_list, node) {
> - if (tz->mode == THERMAL_DEVICE_DISABLED)
> + if (!thermal_zone_device_is_enabled(tz))
> continue;
>
> thermal_zone_device_init(tz);
> diff --git a/drivers/thermal/thermal_of.c b/drivers/thermal/thermal_of.c
> index ba65d48a48cb..43a516a35d64 100644
> --- a/drivers/thermal/thermal_of.c
> +++ b/drivers/thermal/thermal_of.c
> @@ -272,8 +272,6 @@ static int of_thermal_set_mode(struct thermal_zone_device *tz,
> {
> struct __thermal_zone *data = tz->devdata;
>
> - mutex_lock(&tz->lock);
> -
> if (mode == THERMAL_DEVICE_ENABLED) {
> tz->polling_delay = data->polling_delay;
> tz->passive_delay = data->passive_delay;
> @@ -282,11 +280,6 @@ static int of_thermal_set_mode(struct thermal_zone_device *tz,
> tz->passive_delay = 0;
> }
>
> - mutex_unlock(&tz->lock);
> -
> - tz->mode = mode;
> - thermal_zone_device_update(tz, THERMAL_EVENT_UNSPECIFIED);
> -
> return 0;
> }
>
> @@ -541,7 +534,7 @@ thermal_zone_of_sensor_register(struct device *dev, int sensor_id, void *data,
> tzd = thermal_zone_of_add_sensor(child, sensor_np,
> data, ops);
> if (!IS_ERR(tzd))
> - tzd->ops->set_mode(tzd, THERMAL_DEVICE_ENABLED);
> + thermal_zone_device_enable(tzd);
>
> of_node_put(child);
> goto exit;
> @@ -1120,7 +1113,6 @@ 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);
>
> diff --git a/drivers/thermal/thermal_sysfs.c b/drivers/thermal/thermal_sysfs.c
> index 096370977068..c23d67c4dc4e 100644
> --- a/drivers/thermal/thermal_sysfs.c
> +++ b/drivers/thermal/thermal_sysfs.c
> @@ -49,9 +49,9 @@ static ssize_t
> mode_show(struct device *dev, struct device_attribute *attr, char *buf)
> {
> struct thermal_zone_device *tz = to_thermal_zone(dev);
> + int enabled = thermal_zone_device_is_enabled(tz);
>
> - return sprintf(buf, "%s\n", tz->mode == THERMAL_DEVICE_ENABLED ?
> - "enabled" : "disabled");
> + return sprintf(buf, "%s\n", enabled ? "enabled" : "disabled");
> }
>
> static ssize_t
> @@ -61,13 +61,10 @@ mode_store(struct device *dev, struct device_attribute *attr,
> struct thermal_zone_device *tz = to_thermal_zone(dev);
> int result;
>
> - if (!tz->ops->set_mode)
> - return -EPERM;
> -
> if (!strncmp(buf, "enabled", sizeof("enabled") - 1))
> - result = tz->ops->set_mode(tz, THERMAL_DEVICE_ENABLED);
> + result = thermal_zone_device_enable(tz);
> else if (!strncmp(buf, "disabled", sizeof("disabled") - 1))
> - result = tz->ops->set_mode(tz, THERMAL_DEVICE_DISABLED);
> + result = thermal_zone_device_disable(tz);
> else
> result = -EINVAL;
>
>