From 61d88437546f5f40b6411aac17c55d0298c7a19d Mon Sep 17 00:00:00 2001 From: "Rafael J. Wysocki" Date: Wed, 7 Feb 2024 20:10:24 +0100 Subject: iwlwifi: mvm: Populate trip table before registering thermal zone The trip table in iwl_mvm_thermal_zone_register() is populated after passing it to thermal_zone_device_register_with_trips(), so it may be accessed (for instance, via sysfs) before it is ready. To prevent that from happening, modify the function to populate the trip table before calling thermal_zone_device_register_with_trips(). Also make the code use THERMAL_TEMP_INVALID as the "invalid temperature" value which is also meaningful for the core. Signed-off-by: Rafael J. Wysocki Acked-by: Miri Korenblit --- drivers/net/wireless/intel/iwlwifi/mvm/tt.c | 19 +++++++++---------- 1 file changed, 9 insertions(+), 10 deletions(-) (limited to 'drivers/net/wireless/intel/iwlwifi/mvm/tt.c') diff --git a/drivers/net/wireless/intel/iwlwifi/mvm/tt.c b/drivers/net/wireless/intel/iwlwifi/mvm/tt.c index a2f921a1f5bd..4fcbf02b415e 100644 --- a/drivers/net/wireless/intel/iwlwifi/mvm/tt.c +++ b/drivers/net/wireless/intel/iwlwifi/mvm/tt.c @@ -575,7 +575,7 @@ int iwl_mvm_send_temp_report_ths_cmd(struct iwl_mvm *mvm) /* compress trips to cmd array, remove uninitialized values*/ for (i = 0; i < IWL_MAX_DTS_TRIPS; i++) { - if (mvm->tz_device.trips[i].temperature != INT_MIN) { + if (mvm->tz_device.trips[i].temperature != THERMAL_TEMP_INVALID) { cmd.thresholds[idx++] = cpu_to_le16((s16)(mvm->tz_device.trips[i].temperature / 1000)); } @@ -675,6 +675,14 @@ static void iwl_mvm_thermal_zone_register(struct iwl_mvm *mvm) BUILD_BUG_ON(ARRAY_SIZE(name) >= THERMAL_NAME_LENGTH); sprintf(name, "iwlwifi_%u", atomic_inc_return(&counter) & 0xFF); + /* + * 0 is a valid temperature, + * so initialize the array with S16_MIN which invalid temperature + */ + for (i = 0 ; i < IWL_MAX_DTS_TRIPS; i++) { + mvm->tz_device.trips[i].temperature = THERMAL_TEMP_INVALID; + mvm->tz_device.trips[i].type = THERMAL_TRIP_PASSIVE; + } mvm->tz_device.tzone = thermal_zone_device_register_with_trips(name, mvm->tz_device.trips, IWL_MAX_DTS_TRIPS, @@ -693,15 +701,6 @@ static void iwl_mvm_thermal_zone_register(struct iwl_mvm *mvm) if (ret) { IWL_DEBUG_TEMP(mvm, "Failed to enable thermal zone\n"); thermal_zone_device_unregister(mvm->tz_device.tzone); - return; - } - - /* 0 is a valid temperature, - * so initialize the array with S16_MIN which invalid temperature - */ - for (i = 0 ; i < IWL_MAX_DTS_TRIPS; i++) { - mvm->tz_device.trips[i].temperature = INT_MIN; - mvm->tz_device.trips[i].type = THERMAL_TRIP_PASSIVE; } } -- cgit v1.2.3-70-g09d2