From 4a62d588a84e13c68017bd16bc9c2531a2cde08f Mon Sep 17 00:00:00 2001 From: "Rafael J. Wysocki" Date: Thu, 22 Feb 2024 19:09:16 +0100 Subject: [PATCH] thermal: core: Eliminate writable trip points masks All of the thermal_zone_device_register_with_trips() callers pass zero writable trip points masks to it, so drop the mask argument from that function and update all of its callers accordingly. This also removes the artificial trip points per zone limit of 32, related to using writable trip points masks. No intentional functional impact. Signed-off-by: Rafael J. Wysocki Reviewed-by: Daniel Lezcano --- drivers/acpi/thermal.c | 2 +- .../ethernet/chelsio/cxgb4/cxgb4_thermal.c | 2 +- .../ethernet/mellanox/mlxsw/core_thermal.c | 3 -- drivers/net/wireless/intel/iwlwifi/mvm/tt.c | 1 - drivers/platform/x86/acerhdf.c | 2 +- drivers/thermal/da9062-thermal.c | 2 +- drivers/thermal/imx_thermal.c | 2 +- .../int340x_thermal/int340x_thermal_zone.c | 2 +- .../processor_thermal_device_pci.c | 2 +- drivers/thermal/intel/intel_pch_thermal.c | 2 +- .../thermal/intel/intel_quark_dts_thermal.c | 2 +- drivers/thermal/intel/intel_soc_dts_iosf.c | 2 +- drivers/thermal/intel/x86_pkg_temp_thermal.c | 2 +- drivers/thermal/rcar_thermal.c | 2 +- drivers/thermal/st/st_thermal.c | 2 +- drivers/thermal/thermal_core.c | 28 ++----------------- drivers/thermal/thermal_of.c | 2 +- include/linux/thermal.h | 6 ++-- 18 files changed, 19 insertions(+), 47 deletions(-) diff --git a/drivers/acpi/thermal.c b/drivers/acpi/thermal.c index 8042e96016e65..302dce0b2b504 100644 --- a/drivers/acpi/thermal.c +++ b/drivers/acpi/thermal.c @@ -665,7 +665,7 @@ static int acpi_thermal_register_thermal_zone(struct acpi_thermal *tz, tz->thermal_zone = thermal_zone_device_register_with_trips("acpitz", trip_table, trip_count, - 0, tz, + tz, &acpi_thermal_zone_ops, NULL, passive_delay, diff --git a/drivers/net/ethernet/chelsio/cxgb4/cxgb4_thermal.c b/drivers/net/ethernet/chelsio/cxgb4/cxgb4_thermal.c index dea9d29076667..b08356060fb46 100644 --- a/drivers/net/ethernet/chelsio/cxgb4/cxgb4_thermal.c +++ b/drivers/net/ethernet/chelsio/cxgb4/cxgb4_thermal.c @@ -60,7 +60,7 @@ int cxgb4_thermal_init(struct adapter *adap) snprintf(ch_tz_name, sizeof(ch_tz_name), "cxgb4_%s", adap->name); ch_thermal->tzdev = thermal_zone_device_register_with_trips(ch_tz_name, &trip, num_trip, - 0, adap, + adap, &cxgb4_thermal_ops, NULL, 0, 0); if (IS_ERR(ch_thermal->tzdev)) { diff --git a/drivers/net/ethernet/mellanox/mlxsw/core_thermal.c b/drivers/net/ethernet/mellanox/mlxsw/core_thermal.c index 29ec0c1221394..5c511e1a8efa2 100644 --- a/drivers/net/ethernet/mellanox/mlxsw/core_thermal.c +++ b/drivers/net/ethernet/mellanox/mlxsw/core_thermal.c @@ -423,7 +423,6 @@ mlxsw_thermal_module_tz_init(struct mlxsw_thermal_module *module_tz) module_tz->tzdev = thermal_zone_device_register_with_trips(tz_name, module_tz->trips, MLXSW_THERMAL_NUM_TRIPS, - 0, module_tz, &mlxsw_thermal_module_ops, &mlxsw_thermal_params, @@ -551,7 +550,6 @@ mlxsw_thermal_gearbox_tz_init(struct mlxsw_thermal_module *gearbox_tz) gearbox_tz->tzdev = thermal_zone_device_register_with_trips(tz_name, gearbox_tz->trips, MLXSW_THERMAL_NUM_TRIPS, - 0, gearbox_tz, &mlxsw_thermal_gearbox_ops, &mlxsw_thermal_params, 0, @@ -776,7 +774,6 @@ int mlxsw_thermal_init(struct mlxsw_core *core, thermal->tzdev = thermal_zone_device_register_with_trips("mlxsw", thermal->trips, MLXSW_THERMAL_NUM_TRIPS, - 0, thermal, &mlxsw_thermal_ops, &mlxsw_thermal_params, 0, diff --git a/drivers/net/wireless/intel/iwlwifi/mvm/tt.c b/drivers/net/wireless/intel/iwlwifi/mvm/tt.c index 2353177f2dfab..61a4638d1be2f 100644 --- a/drivers/net/wireless/intel/iwlwifi/mvm/tt.c +++ b/drivers/net/wireless/intel/iwlwifi/mvm/tt.c @@ -694,7 +694,6 @@ static void iwl_mvm_thermal_zone_register(struct iwl_mvm *mvm) mvm->tz_device.tzone = thermal_zone_device_register_with_trips(name, mvm->tz_device.trips, IWL_MAX_DTS_TRIPS, - 0, mvm, &tzone_ops, NULL, 0, 0); if (IS_ERR(mvm->tz_device.tzone)) { diff --git a/drivers/platform/x86/acerhdf.c b/drivers/platform/x86/acerhdf.c index 74bcb3d131042..018c484296162 100644 --- a/drivers/platform/x86/acerhdf.c +++ b/drivers/platform/x86/acerhdf.c @@ -678,7 +678,7 @@ static int __init acerhdf_register_thermal(void) return -EINVAL; thz_dev = thermal_zone_device_register_with_trips("acerhdf", trips, ARRAY_SIZE(trips), - 0, NULL, &acerhdf_dev_ops, + NULL, &acerhdf_dev_ops, &acerhdf_zone_params, 0, (kernelmode) ? interval*1000 : 0); if (IS_ERR(thz_dev)) diff --git a/drivers/thermal/da9062-thermal.c b/drivers/thermal/da9062-thermal.c index 160d64913057d..a27aff88cd96c 100644 --- a/drivers/thermal/da9062-thermal.c +++ b/drivers/thermal/da9062-thermal.c @@ -197,7 +197,7 @@ static int da9062_thermal_probe(struct platform_device *pdev) mutex_init(&thermal->lock); thermal->zone = thermal_zone_device_register_with_trips(thermal->config->name, - trips, ARRAY_SIZE(trips), 0, thermal, + trips, ARRAY_SIZE(trips), thermal, &da9062_thermal_ops, NULL, pp_tmp, 0); if (IS_ERR(thermal->zone)) { diff --git a/drivers/thermal/imx_thermal.c b/drivers/thermal/imx_thermal.c index 0dbede6bec546..83eaae5ca3b8a 100644 --- a/drivers/thermal/imx_thermal.c +++ b/drivers/thermal/imx_thermal.c @@ -701,7 +701,7 @@ static int imx_thermal_probe(struct platform_device *pdev) data->tz = thermal_zone_device_register_with_trips("imx_thermal_zone", trips, ARRAY_SIZE(trips), - 0, data, + data, &imx_tz_ops, NULL, IMX_PASSIVE_DELAY, IMX_POLLING_DELAY); diff --git a/drivers/thermal/intel/int340x_thermal/int340x_thermal_zone.c b/drivers/thermal/intel/int340x_thermal/int340x_thermal_zone.c index 0e8148afb490a..e8182f0929d3d 100644 --- a/drivers/thermal/intel/int340x_thermal/int340x_thermal_zone.c +++ b/drivers/thermal/intel/int340x_thermal/int340x_thermal_zone.c @@ -171,7 +171,7 @@ struct int34x_thermal_zone *int340x_thermal_zone_add(struct acpi_device *adev, int34x_zone->zone = thermal_zone_device_register_with_trips( acpi_device_bid(adev), zone_trips, trip_cnt, - 0, int34x_zone, + int34x_zone, &zone_ops, &int340x_thermal_params, 0, 0); diff --git a/drivers/thermal/intel/int340x_thermal/processor_thermal_device_pci.c b/drivers/thermal/intel/int340x_thermal/processor_thermal_device_pci.c index 7572f3a73c549..7dcf6006816ea 100644 --- a/drivers/thermal/intel/int340x_thermal/processor_thermal_device_pci.c +++ b/drivers/thermal/intel/int340x_thermal/processor_thermal_device_pci.c @@ -290,7 +290,7 @@ static int proc_thermal_pci_probe(struct pci_dev *pdev, const struct pci_device_ psv_trip.temperature = get_trip_temp(pci_info); pci_info->tzone = thermal_zone_device_register_with_trips("TCPU_PCI", &psv_trip, - 1, 0, pci_info, + 1, pci_info, &tzone_ops, &tzone_params, 0, 0); if (IS_ERR(pci_info->tzone)) { diff --git a/drivers/thermal/intel/intel_pch_thermal.c b/drivers/thermal/intel/intel_pch_thermal.c index 8bfb221e57e75..f5be2c389351a 100644 --- a/drivers/thermal/intel/intel_pch_thermal.c +++ b/drivers/thermal/intel/intel_pch_thermal.c @@ -237,7 +237,7 @@ static int intel_pch_thermal_probe(struct pci_dev *pdev, ptd->tzd = thermal_zone_device_register_with_trips(board_names[board_id], ptd_trips, nr_trips, - 0, ptd, &tzd_ops, + ptd, &tzd_ops, NULL, 0, 0); if (IS_ERR(ptd->tzd)) { dev_err(&pdev->dev, "Failed to register thermal zone %s\n", diff --git a/drivers/thermal/intel/intel_quark_dts_thermal.c b/drivers/thermal/intel/intel_quark_dts_thermal.c index 55a031fc3a9af..ec6ad26027bcb 100644 --- a/drivers/thermal/intel/intel_quark_dts_thermal.c +++ b/drivers/thermal/intel/intel_quark_dts_thermal.c @@ -363,7 +363,7 @@ static struct soc_sensor_entry *alloc_soc_dts(void) aux_entry->tzone = thermal_zone_device_register_with_trips("quark_dts", trips, QRK_MAX_DTS_TRIPS, - 0, aux_entry, + aux_entry, &tzone_ops, NULL, 0, polling_delay); if (IS_ERR(aux_entry->tzone)) { diff --git a/drivers/thermal/intel/intel_soc_dts_iosf.c b/drivers/thermal/intel/intel_soc_dts_iosf.c index 5a84c91662745..2ab943b66f7aa 100644 --- a/drivers/thermal/intel/intel_soc_dts_iosf.c +++ b/drivers/thermal/intel/intel_soc_dts_iosf.c @@ -230,7 +230,7 @@ static int add_dts_thermal_zone(int id, struct intel_soc_dts_sensor_entry *dts, snprintf(name, sizeof(name), "soc_dts%d", id); dts->tzone = thermal_zone_device_register_with_trips(name, trips, SOC_MAX_DTS_TRIPS, - 0, dts, &tzone_ops, + dts, &tzone_ops, NULL, 0, 0); if (IS_ERR(dts->tzone)) { ret = PTR_ERR(dts->tzone); diff --git a/drivers/thermal/intel/x86_pkg_temp_thermal.c b/drivers/thermal/intel/x86_pkg_temp_thermal.c index 5a48b73a0951b..22a1e3268a989 100644 --- a/drivers/thermal/intel/x86_pkg_temp_thermal.c +++ b/drivers/thermal/intel/x86_pkg_temp_thermal.c @@ -338,7 +338,7 @@ static int pkg_temp_thermal_device_add(unsigned int cpu) INIT_DELAYED_WORK(&zonedev->work, pkg_temp_thermal_threshold_work_fn); zonedev->cpu = cpu; zonedev->tzone = thermal_zone_device_register_with_trips("x86_pkg_temp", - trips, thres_count, 0, + trips, thres_count, zonedev, &tzone_ops, &pkg_temp_tz_params, 0, 0); if (IS_ERR(zonedev->tzone)) { err = PTR_ERR(zonedev->tzone); diff --git a/drivers/thermal/rcar_thermal.c b/drivers/thermal/rcar_thermal.c index feb848d595fa1..925183753fcb4 100644 --- a/drivers/thermal/rcar_thermal.c +++ b/drivers/thermal/rcar_thermal.c @@ -489,7 +489,7 @@ static int rcar_thermal_probe(struct platform_device *pdev) &rcar_thermal_zone_ops); } else { priv->zone = thermal_zone_device_register_with_trips( - "rcar_thermal", trips, ARRAY_SIZE(trips), 0, priv, + "rcar_thermal", trips, ARRAY_SIZE(trips), priv, &rcar_thermal_zone_ops, NULL, 0, idle); diff --git a/drivers/thermal/st/st_thermal.c b/drivers/thermal/st/st_thermal.c index 0d6249b36609e..2a105409864ea 100644 --- a/drivers/thermal/st/st_thermal.c +++ b/drivers/thermal/st/st_thermal.c @@ -203,7 +203,7 @@ int st_thermal_register(struct platform_device *pdev, trip.type = THERMAL_TRIP_CRITICAL; sensor->thermal_dev = - thermal_zone_device_register_with_trips(dev_name(dev), &trip, 1, 0, sensor, + thermal_zone_device_register_with_trips(dev_name(dev), &trip, 1, sensor, &st_tz_ops, NULL, 0, polling_delay); if (IS_ERR(sensor->thermal_dev)) { dev_err(dev, "failed to register thermal zone device\n"); diff --git a/drivers/thermal/thermal_core.c b/drivers/thermal/thermal_core.c index 2ab495220c6ef..f7a7d43809e72 100644 --- a/drivers/thermal/thermal_core.c +++ b/drivers/thermal/thermal_core.c @@ -1248,7 +1248,6 @@ EXPORT_SYMBOL_GPL(thermal_zone_get_crit_temp); * @type: the thermal zone device type * @trips: a pointer to an array of thermal trips * @num_trips: the number of trip points the thermal zone support - * @mask: a bit string indicating the writeablility of trip points * @devdata: private device data * @ops: standard thermal zone device callbacks * @tzp: thermal zone platform parameters @@ -1271,14 +1270,12 @@ EXPORT_SYMBOL_GPL(thermal_zone_get_crit_temp); struct thermal_zone_device * thermal_zone_device_register_with_trips(const char *type, const struct thermal_trip *trips, - int num_trips, int mask, - void *devdata, + int num_trips, void *devdata, const struct thermal_zone_device_ops *ops, const struct thermal_zone_params *tzp, int passive_delay, int polling_delay) { struct thermal_zone_device *tz; - struct thermal_trip *trip; int id; int result; struct thermal_governor *governor; @@ -1294,20 +1291,7 @@ thermal_zone_device_register_with_trips(const char *type, return ERR_PTR(-EINVAL); } - /* - * Max trip count can't exceed 31 as the "mask >> num_trips" condition. - * For example, shifting by 32 will result in compiler warning: - * warning: right shift count >= width of type [-Wshift-count- overflow] - * - * Also "mask >> num_trips" will always be true with 32 bit shift. - * E.g. mask = 0x80000000 for trip id 31 to be RW. Then - * mask >> 32 = 0x80000000 - * This will result in failure for the below condition. - * - * Check will be true when the bit 31 of the mask is set. - * 32 bit shift will cause overflow of 4 byte integer. - */ - if (num_trips > (BITS_PER_TYPE(int) - 1) || num_trips < 0 || mask >> num_trips) { + if (num_trips < 0) { pr_err("Incorrect number of thermal trips\n"); return ERR_PTR(-EINVAL); } @@ -1357,12 +1341,6 @@ thermal_zone_device_register_with_trips(const char *type, tz->devdata = devdata; tz->num_trips = num_trips; memcpy(tz->trips, trips, num_trips * sizeof(*trips)); - for_each_trip(tz, trip) { - if (mask & 1) - trip->flags |= THERMAL_TRIP_FLAG_RW_TEMP; - - mask >>= 1; - } thermal_set_delay_jiffies(&tz->passive_delay_jiffies, passive_delay); thermal_set_delay_jiffies(&tz->polling_delay_jiffies, polling_delay); @@ -1447,7 +1425,7 @@ struct thermal_zone_device *thermal_tripless_zone_device_register( const struct thermal_zone_device_ops *ops, const struct thermal_zone_params *tzp) { - return thermal_zone_device_register_with_trips(type, NULL, 0, 0, devdata, + return thermal_zone_device_register_with_trips(type, NULL, 0, devdata, ops, tzp, 0, 0); } EXPORT_SYMBOL_GPL(thermal_tripless_zone_device_register); diff --git a/drivers/thermal/thermal_of.c b/drivers/thermal/thermal_of.c index c3bd5fb15c7e2..f1cbf9aa62cfe 100644 --- a/drivers/thermal/thermal_of.c +++ b/drivers/thermal/thermal_of.c @@ -507,7 +507,7 @@ static struct thermal_zone_device *thermal_of_zone_register(struct device_node * of_ops.critical = thermal_zone_device_critical_reboot; tz = thermal_zone_device_register_with_trips(np->name, trips, ntrips, - 0, data, &of_ops, &tzp, + data, &of_ops, &tzp, pdelay, delay); if (IS_ERR(tz)) { ret = PTR_ERR(tz); diff --git a/include/linux/thermal.h b/include/linux/thermal.h index eb4145a64c7e0..c33f50177f518 100644 --- a/include/linux/thermal.h +++ b/include/linux/thermal.h @@ -323,8 +323,7 @@ int thermal_zone_get_crit_temp(struct thermal_zone_device *tz, int *temp); struct thermal_zone_device *thermal_zone_device_register_with_trips( const char *type, const struct thermal_trip *trips, - int num_trips, int mask, - void *devdata, + int num_trips, void *devdata, const struct thermal_zone_device_ops *ops, const struct thermal_zone_params *tzp, int passive_delay, int polling_delay); @@ -383,8 +382,7 @@ void thermal_zone_device_critical(struct thermal_zone_device *tz); static inline struct thermal_zone_device *thermal_zone_device_register_with_trips( const char *type, const struct thermal_trip *trips, - int num_trips, int mask, - void *devdata, + int num_trips, void *devdata, const struct thermal_zone_device_ops *ops, const struct thermal_zone_params *tzp, int passive_delay, int polling_delay)