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Message-ID: <20200529190913.GA174495@roeck-us.net>
Date: Fri, 29 May 2020 12:09:13 -0700
From: Guenter Roeck <linux@...ck-us.net>
To: Andrzej Pietrasiewicz <andrzej.p@...labora.com>
Cc: linux-pm@...r.kernel.org, linux-acpi@...r.kernel.org,
netdev@...r.kernel.org, linux-wireless@...r.kernel.org,
platform-driver-x86@...r.kernel.org,
linux-arm-kernel@...ts.infradead.org,
linux-renesas-soc@...r.kernel.org,
linux-rockchip@...ts.infradead.org,
Emmanuel Grumbach <emmanuel.grumbach@...el.com>,
Heiko Stuebner <heiko@...ech.de>,
"Rafael J . Wysocki" <rjw@...ysocki.net>,
Vishal Kulkarni <vishal@...lsio.com>,
Luca Coelho <luciano.coelho@...el.com>,
Miquel Raynal <miquel.raynal@...tlin.com>,
kernel@...labora.com, Fabio Estevam <festevam@...il.com>,
Amit Kucheria <amit.kucheria@...durent.com>,
Chunyan Zhang <zhang.lyra@...il.com>,
Daniel Lezcano <daniel.lezcano@...aro.org>,
Allison Randal <allison@...utok.net>,
NXP Linux Team <linux-imx@....com>,
Darren Hart <dvhart@...radead.org>,
Zhang Rui <rui.zhang@...el.com>,
Gayatri Kammela <gayatri.kammela@...el.com>,
Len Brown <lenb@...nel.org>,
Johannes Berg <johannes.berg@...el.com>,
Intel Linux Wireless <linuxwifi@...el.com>,
Sascha Hauer <s.hauer@...gutronix.de>,
Ido Schimmel <idosch@...lanox.com>,
Baolin Wang <baolin.wang7@...il.com>,
Jiri Pirko <jiri@...lanox.com>,
Orson Zhai <orsonzhai@...il.com>,
Thomas Gleixner <tglx@...utronix.de>,
Kalle Valo <kvalo@...eaurora.org>,
Support Opensource <support.opensource@...semi.com>,
Enrico Weigelt <info@...ux.net>,
Peter Kaestle <peter@...e.net>,
Sebastian Reichel <sre@...nel.org>,
Bartlomiej Zolnierkiewicz <b.zolnierkie@...sung.com>,
Pengutronix Kernel Team <kernel@...gutronix.de>,
Niklas Söderlund
<niklas.soderlund@...natech.se>, Shawn Guo <shawnguo@...nel.org>,
"David S . Miller" <davem@...emloft.net>,
Andy Shevchenko <andy@...radead.org>
Subject: Re: [PATCH v4 04/11] thermal: Store device mode in struct
thermal_zone_device
On Thu, May 28, 2020 at 09:20:44PM +0200, Andrzej Pietrasiewicz wrote:
> Prepare for eliminating get_mode().
>
> Signed-off-by: Andrzej Pietrasiewicz <andrzej.p@...labora.com>
Based on discussion:
Reviewed-by: Guenter Roeck <linux@...ck-us.net>
Guenter
> ---
> 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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