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Date:   Thu, 28 May 2020 21:20:50 +0200
From:   Andrzej Pietrasiewicz <andrzej.p@...labora.com>
To:     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
Cc:     "Rafael J . Wysocki" <rjw@...ysocki.net>,
        Len Brown <lenb@...nel.org>,
        Vishal Kulkarni <vishal@...lsio.com>,
        "David S . Miller" <davem@...emloft.net>,
        Jiri Pirko <jiri@...lanox.com>,
        Ido Schimmel <idosch@...lanox.com>,
        Johannes Berg <johannes.berg@...el.com>,
        Emmanuel Grumbach <emmanuel.grumbach@...el.com>,
        Luca Coelho <luciano.coelho@...el.com>,
        Intel Linux Wireless <linuxwifi@...el.com>,
        Kalle Valo <kvalo@...eaurora.org>,
        Peter Kaestle <peter@...e.net>,
        Darren Hart <dvhart@...radead.org>,
        Andy Shevchenko <andy@...radead.org>,
        Sebastian Reichel <sre@...nel.org>,
        Miquel Raynal <miquel.raynal@...tlin.com>,
        Daniel Lezcano <daniel.lezcano@...aro.org>,
        Amit Kucheria <amit.kucheria@...durent.com>,
        Support Opensource <support.opensource@...semi.com>,
        Shawn Guo <shawnguo@...nel.org>,
        Sascha Hauer <s.hauer@...gutronix.de>,
        Pengutronix Kernel Team <kernel@...gutronix.de>,
        Fabio Estevam <festevam@...il.com>,
        NXP Linux Team <linux-imx@....com>,
        Niklas Söderlund <niklas.soderlund@...natech.se>,
        Heiko Stuebner <heiko@...ech.de>,
        Orson Zhai <orsonzhai@...il.com>,
        Baolin Wang <baolin.wang7@...il.com>,
        Chunyan Zhang <zhang.lyra@...il.com>,
        Zhang Rui <rui.zhang@...el.com>,
        Allison Randal <allison@...utok.net>,
        Enrico Weigelt <info@...ux.net>,
        Gayatri Kammela <gayatri.kammela@...el.com>,
        Thomas Gleixner <tglx@...utronix.de>,
        Bartlomiej Zolnierkiewicz <b.zolnierkie@...sung.com>,
        Andrzej Pietrasiewicz <andrzej.p@...labora.com>,
        kernel@...labora.com
Subject: [PATCH v4 10/11] thermal: Simplify or eliminate unnecessary set_mode() methods

Setting polling_delay is now done at thermal_core level (by not polling
DISABLED devices), so no need to repeat this code.

int340x: Checking for an impossible enum value is unnecessary.
acpi/thermal: It only prints debug messages.

Signed-off-by: Andrzej Pietrasiewicz <andrzej.p@...labora.com>
---
 drivers/acpi/thermal.c                        | 26 ----------------
 .../ethernet/mellanox/mlxsw/core_thermal.c    | 30 -------------------
 drivers/platform/x86/acerhdf.c                |  3 --
 drivers/thermal/imx_thermal.c                 |  6 ----
 .../intel/int340x_thermal/int3400_thermal.c   |  4 ---
 drivers/thermal/thermal_of.c                  | 18 -----------
 6 files changed, 87 deletions(-)

diff --git a/drivers/acpi/thermal.c b/drivers/acpi/thermal.c
index 52b6cda1bcc3..29a2b73fe035 100644
--- a/drivers/acpi/thermal.c
+++ b/drivers/acpi/thermal.c
@@ -525,31 +525,6 @@ static int thermal_get_temp(struct thermal_zone_device *thermal, int *temp)
 	return 0;
 }
 
-static int thermal_set_mode(struct thermal_zone_device *thermal,
-				enum thermal_device_mode mode)
-{
-	struct acpi_thermal *tz = thermal->devdata;
-
-	if (!tz)
-		return -EINVAL;
-
-	if (mode != THERMAL_DEVICE_DISABLED &&
-	    mode != THERMAL_DEVICE_ENABLED)
-		return -EINVAL;
-	/*
-	 * enable/disable thermal management from ACPI thermal driver
-	 */
-	if (mode == THERMAL_DEVICE_DISABLED)
-		pr_warn("thermal zone will be disabled\n");
-
-	ACPI_DEBUG_PRINT((ACPI_DB_INFO,
-		"%s kernel ACPI thermal control\n",
-		mode == THERMAL_DEVICE_ENABLED ?
-		"Enable" : "Disable"));
-
-	return 0;
-}
-
 static int thermal_get_trip_type(struct thermal_zone_device *thermal,
 				 int trip, enum thermal_trip_type *type)
 {
@@ -836,7 +811,6 @@ static struct thermal_zone_device_ops acpi_thermal_zone_ops = {
 	.bind = acpi_thermal_bind_cooling_device,
 	.unbind	= acpi_thermal_unbind_cooling_device,
 	.get_temp = thermal_get_temp,
-	.set_mode = thermal_set_mode,
 	.get_trip_type = thermal_get_trip_type,
 	.get_trip_temp = thermal_get_trip_temp,
 	.get_crit_temp = thermal_get_crit_temp,
diff --git a/drivers/net/ethernet/mellanox/mlxsw/core_thermal.c b/drivers/net/ethernet/mellanox/mlxsw/core_thermal.c
index e1d800be8bb4..c7f334383912 100644
--- a/drivers/net/ethernet/mellanox/mlxsw/core_thermal.c
+++ b/drivers/net/ethernet/mellanox/mlxsw/core_thermal.c
@@ -275,19 +275,6 @@ static int mlxsw_thermal_unbind(struct thermal_zone_device *tzdev,
 	return 0;
 }
 
-static int mlxsw_thermal_set_mode(struct thermal_zone_device *tzdev,
-				  enum thermal_device_mode mode)
-{
-	struct mlxsw_thermal *thermal = tzdev->devdata;
-
-	if (mode == THERMAL_DEVICE_ENABLED)
-		tzdev->polling_delay = thermal->polling_delay;
-	else
-		tzdev->polling_delay = 0;
-
-	return 0;
-}
-
 static int mlxsw_thermal_get_temp(struct thermal_zone_device *tzdev,
 				  int *p_temp)
 {
@@ -388,7 +375,6 @@ static int mlxsw_thermal_trend_get(struct thermal_zone_device *tzdev,
 static struct thermal_zone_device_ops mlxsw_thermal_ops = {
 	.bind = mlxsw_thermal_bind,
 	.unbind = mlxsw_thermal_unbind,
-	.set_mode = mlxsw_thermal_set_mode,
 	.get_temp = mlxsw_thermal_get_temp,
 	.get_trip_type	= mlxsw_thermal_get_trip_type,
 	.get_trip_temp	= mlxsw_thermal_get_trip_temp,
@@ -446,20 +432,6 @@ static int mlxsw_thermal_module_unbind(struct thermal_zone_device *tzdev,
 	return err;
 }
 
-static int mlxsw_thermal_module_mode_set(struct thermal_zone_device *tzdev,
-					 enum thermal_device_mode mode)
-{
-	struct mlxsw_thermal_module *tz = tzdev->devdata;
-	struct mlxsw_thermal *thermal = tz->parent;
-
-	if (mode == THERMAL_DEVICE_ENABLED)
-		tzdev->polling_delay = thermal->polling_delay;
-	else
-		tzdev->polling_delay = 0;
-
-	return 0;
-}
-
 static int mlxsw_thermal_module_temp_get(struct thermal_zone_device *tzdev,
 					 int *p_temp)
 {
@@ -559,7 +531,6 @@ mlxsw_thermal_module_trip_hyst_set(struct thermal_zone_device *tzdev, int trip,
 static struct thermal_zone_device_ops mlxsw_thermal_module_ops = {
 	.bind		= mlxsw_thermal_module_bind,
 	.unbind		= mlxsw_thermal_module_unbind,
-	.set_mode	= mlxsw_thermal_module_mode_set,
 	.get_temp	= mlxsw_thermal_module_temp_get,
 	.get_trip_type	= mlxsw_thermal_module_trip_type_get,
 	.get_trip_temp	= mlxsw_thermal_module_trip_temp_get,
@@ -597,7 +568,6 @@ static int mlxsw_thermal_gearbox_temp_get(struct thermal_zone_device *tzdev,
 static struct thermal_zone_device_ops mlxsw_thermal_gearbox_ops = {
 	.bind		= mlxsw_thermal_module_bind,
 	.unbind		= mlxsw_thermal_module_unbind,
-	.set_mode	= mlxsw_thermal_module_mode_set,
 	.get_temp	= mlxsw_thermal_gearbox_temp_get,
 	.get_trip_type	= mlxsw_thermal_module_trip_type_get,
 	.get_trip_temp	= mlxsw_thermal_module_trip_temp_get,
diff --git a/drivers/platform/x86/acerhdf.c b/drivers/platform/x86/acerhdf.c
index 3efe749dc5a0..d33a70af0869 100644
--- a/drivers/platform/x86/acerhdf.c
+++ b/drivers/platform/x86/acerhdf.c
@@ -397,8 +397,6 @@ static inline void acerhdf_revert_to_bios_mode(void)
 {
 	acerhdf_change_fanstate(ACERHDF_FAN_AUTO);
 	kernelmode = 0;
-	if (thz_dev)
-		thz_dev->polling_delay = 0;
 
 	pr_notice("kernel mode fan control OFF\n");
 }
@@ -406,7 +404,6 @@ static inline void acerhdf_enable_kernelmode(void)
 {
 	kernelmode = 1;
 
-	thz_dev->polling_delay = interval*1000;
 	pr_notice("kernel mode fan control ON\n");
 }
 
diff --git a/drivers/thermal/imx_thermal.c b/drivers/thermal/imx_thermal.c
index 53abb1be1cba..a02398118d88 100644
--- a/drivers/thermal/imx_thermal.c
+++ b/drivers/thermal/imx_thermal.c
@@ -338,9 +338,6 @@ static int imx_set_mode(struct thermal_zone_device *tz,
 	const struct thermal_soc_data *soc_data = data->socdata;
 
 	if (mode == THERMAL_DEVICE_ENABLED) {
-		tz->polling_delay = IMX_POLLING_DELAY;
-		tz->passive_delay = IMX_PASSIVE_DELAY;
-
 		regmap_write(map, soc_data->sensor_ctrl + REG_CLR,
 			     soc_data->power_down_mask);
 		regmap_write(map, soc_data->sensor_ctrl + REG_SET,
@@ -356,9 +353,6 @@ static int imx_set_mode(struct thermal_zone_device *tz,
 		regmap_write(map, soc_data->sensor_ctrl + REG_SET,
 			     soc_data->power_down_mask);
 
-		tz->polling_delay = 0;
-		tz->passive_delay = 0;
-
 		if (data->irq_enabled) {
 			disable_irq(data->irq);
 			data->irq_enabled = false;
diff --git a/drivers/thermal/intel/int340x_thermal/int3400_thermal.c b/drivers/thermal/intel/int340x_thermal/int3400_thermal.c
index 8e8c9af7e5f4..9af862ab9f65 100644
--- a/drivers/thermal/intel/int340x_thermal/int3400_thermal.c
+++ b/drivers/thermal/intel/int340x_thermal/int3400_thermal.c
@@ -386,10 +386,6 @@ static int int3400_thermal_set_mode(struct thermal_zone_device *thermal,
 	if (!priv)
 		return -EINVAL;
 
-	if (mode != THERMAL_DEVICE_ENABLED &&
-	    mode != THERMAL_DEVICE_DISABLED)
-		return -EINVAL;
-
 	if (mode != thermal->mode)
 		result = int3400_thermal_run_osc(priv->adev->handle,
 						priv->current_uuid_index,
diff --git a/drivers/thermal/thermal_of.c b/drivers/thermal/thermal_of.c
index 011fd7f0a01e..8a6272570347 100644
--- a/drivers/thermal/thermal_of.c
+++ b/drivers/thermal/thermal_of.c
@@ -267,22 +267,6 @@ static int of_thermal_unbind(struct thermal_zone_device *thermal,
 	return 0;
 }
 
-static int of_thermal_set_mode(struct thermal_zone_device *tz,
-			       enum thermal_device_mode mode)
-{
-	struct __thermal_zone *data = tz->devdata;
-
-	if (mode == THERMAL_DEVICE_ENABLED) {
-		tz->polling_delay = data->polling_delay;
-		tz->passive_delay = data->passive_delay;
-	} else {
-		tz->polling_delay = 0;
-		tz->passive_delay = 0;
-	}
-
-	return 0;
-}
-
 static int of_thermal_get_trip_type(struct thermal_zone_device *tz, int trip,
 				    enum thermal_trip_type *type)
 {
@@ -374,8 +358,6 @@ static int of_thermal_get_crit_temp(struct thermal_zone_device *tz,
 }
 
 static struct thermal_zone_device_ops of_thermal_ops = {
-	.set_mode = of_thermal_set_mode,
-
 	.get_trip_type = of_thermal_get_trip_type,
 	.get_trip_temp = of_thermal_get_trip_temp,
 	.set_trip_temp = of_thermal_set_trip_temp,
-- 
2.17.1

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