hw-mgmt: thermal: Fix ASIC tz mode

In case ASIC starts after TC it can set thermal zone mode to 'step_wise'. This fix set thermal zone policy to 'user_space' after ASIC start. Signed-off-by: Oleksandr Shamray <[email protected]>
Mellanox · Aug 3, 2023 · dd6ddca · dd6ddca
1 parent aa989f2
commit dd6ddca
Showing 1 changed file with 11 additions and 3 deletions.
diff --git a/usr/usr/bin/hw_management_thermal_control.py b/usr/usr/bin/hw_management_thermal_control.py
@@ -1250,17 +1250,22 @@ def sensor_configure(self):
         """
         @summary: this function calling on sensor start after initialization or suspend off
         """
-        # Disable kernel control for this thermal zone
         self.refresh_attr()
         if "asic" in self.base_file_name:
             tz_name = "mlxsw"
         else:
             tz_name = "mlxsw-{}".format(self.base_file_name)
         tz_policy_filename = "thermal/{}/thermal_zone_policy".format(tz_name)
         tz_mode_filename = "thermal/{}/thermal_zone_mode".format(tz_name)
+
+        self.log.info("Configure module {} policy".format(tz_name))
+        # Disable kernel control for this thermal zone
         try:
-            self.write_file(tz_policy_filename, "user_space")
-            self.write_file(tz_mode_filename, "disabled")
+            policy = self.read_file(tz_policy_filename)
+            # do not set policy if tz already configured
+            if "user_space" not in policy:
+                self.write_file(tz_policy_filename, "user_space")
+                self.write_file(tz_mode_filename, "disabled")
         except BaseException:
             pass
 
@@ -1330,6 +1335,9 @@ def handle_input(self, thermal_table, flow_dir, amb_tmp):
         else:
             try:
                 temperature = int(self.read_file(temp_read_file))
+                if temp_read_file in self.check_reading_file_err():
+                    # senor returned back. Reconfigure module.
+                    self.sensor_configure()
                 self.handle_reading_file_err(temp_read_file, reset=True)
                 temperature /= CONST.TEMP_SENSOR_SCALE
                 self.log.debug("{} value:{}".format(self.name, temperature))