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Wysocki" To: Linux PM Cc: Gregory Greenman , Miri Korenblit , Kalle Valo , Johannes Berg , linux-wireless@vger.kernel.org, LKML , Daniel Lezcano , Stanislaw Gruszka Subject: [PATCH v1 2/3] iwlwifi: mvm: Populate trip table before registering thermal zone Date: Wed, 07 Feb 2024 20:10:24 +0100 Message-ID: <8346768.T7Z3S40VBb@kreacher> In-Reply-To: <1892445.tdWV9SEqCh@kreacher> References: <1892445.tdWV9SEqCh@kreacher> Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 X-CLIENT-IP: 195.136.19.94 X-CLIENT-HOSTNAME: 195.136.19.94 X-VADE-SPAMSTATE: clean X-VADE-SPAMCAUSE: gggruggvucftvghtrhhoucdtuddrgedvledrtddvgdduudelucetufdoteggodetrfdotffvucfrrhhofhhilhgvmecujffqoffgrffnpdggtffipffknecuuegrihhlohhuthemucduhedtnecusecvtfgvtghiphhivghnthhsucdlqddutddtmdenucfjughrpefhvfevufffkfgjfhgggfgtsehtufertddttdejnecuhfhrohhmpedftfgrfhgrvghlucflrdcuhgihshhotghkihdfuceorhhjfiesrhhjfiihshhotghkihdrnhgvtheqnecuggftrfgrthhtvghrnhepvdffueeitdfgvddtudegueejtdffteetgeefkeffvdeftddttdeuhfegfedvjefhnecukfhppeduleehrddufeeirdduledrleegnecuvehluhhsthgvrhfuihiivgeptdenucfrrghrrghmpehinhgvthepudelhedrudefiedrudelrdelgedphhgvlhhopehkrhgvrggthhgvrhdrlhhotggrlhhnvghtpdhmrghilhhfrhhomhepfdftrghfrggvlhculfdrucghhihsohgtkhhifdcuoehrjhifsehrjhifhihsohgtkhhirdhnvghtqedpnhgspghrtghpthhtohepledprhgtphhtthhopehlihhnuhigqdhpmhesvhhgvghrrdhkvghrnhgvlhdrohhrghdprhgtphhtthhopehgrhgvghhorhihrdhgrhgvvghnmhgrnhesihhnthgvlhdrtghomhdprhgtphhtthhopehmihhrihgrmhdrrhgrtghhvghlrdhkohhrvghnsghlihhtsehinhhtvghlrdgtohhmpdhrtghpthhtohepkhhvrghloheskhgvrhhnvghlrdhorhhgpdhrtghpthhtohep jhhohhgrnhhnvghsrdgsvghrghesihhnthgvlhdrtghomhdprhgtphhtthhopehlihhnuhigqdifihhrvghlvghsshesvhhgvghrrdhkvghrnhgvlhdrohhrgh X-DCC--Metrics: v370.home.net.pl 1024; Body=9 Fuz1=9 Fuz2=9 X-getmail-retrieved-from-mailbox: INBOX X-GMAIL-THRID: 1790268632720650106 X-GMAIL-MSGID: 1790268632720650106 From: Rafael J. Wysocki 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 --- drivers/net/wireless/intel/iwlwifi/mvm/tt.c | 19 +++++++++---------- 1 file changed, 9 insertions(+), 10 deletions(-) Index: linux-pm/drivers/net/wireless/intel/iwlwifi/mvm/tt.c =================================================================== --- linux-pm.orig/drivers/net/wireless/intel/iwlwifi/mvm/tt.c +++ linux-pm/drivers/net/wireless/intel/iwlwifi/mvm/tt.c @@ -575,7 +575,7 @@ int iwl_mvm_send_temp_report_ths_cmd(str /* 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_registe 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_registe 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; } }