disable FB

hc

2024-01-04 1543e317f1da31b75942316931e8f491a8920811

 kernel/drivers/thermal/intel/int340x_thermal/int340x_thermal_zone.c
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@@ -44,10 +44,12 @@
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 					 int trip, int *temp)
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 {
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 	struct int34x_thermal_zone *d = zone->devdata;
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-	int i;
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+	int i, ret = 0;
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 	if (d->override_ops && d->override_ops->get_trip_temp)
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 		return d->override_ops->get_trip_temp(zone, trip, temp);
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+
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+	mutex_lock(&d->trip_mutex);
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 	if (trip < d->aux_trip_nr)
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 		*temp = d->aux_trips[trip];
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@@ -66,10 +68,12 @@
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 			}
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 		}
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 		if (i == INT340X_THERMAL_MAX_ACT_TRIP_COUNT)
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-			return -EINVAL;
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+			ret = -EINVAL;
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 	}
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-	return 0;
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+	mutex_unlock(&d->trip_mutex);
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+
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+	return ret;
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 }
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 static int int340x_thermal_get_trip_type(struct thermal_zone_device *zone,
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@@ -77,10 +81,12 @@
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 					 enum thermal_trip_type *type)
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 {
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 	struct int34x_thermal_zone *d = zone->devdata;
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-	int i;
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+	int i, ret = 0;
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 	if (d->override_ops && d->override_ops->get_trip_type)
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 		return d->override_ops->get_trip_type(zone, trip, type);
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+
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+	mutex_lock(&d->trip_mutex);
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 	if (trip < d->aux_trip_nr)
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 		*type = THERMAL_TRIP_PASSIVE;
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@@ -99,10 +105,12 @@
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 			}
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 		}
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 		if (i == INT340X_THERMAL_MAX_ACT_TRIP_COUNT)
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-			return -EINVAL;
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+			ret = -EINVAL;
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 	}
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-	return 0;
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+	mutex_unlock(&d->trip_mutex);
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+
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+	return ret;
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 }
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 static int int340x_thermal_set_trip_temp(struct thermal_zone_device *zone,
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@@ -174,6 +182,8 @@
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 	int trip_cnt = int34x_zone->aux_trip_nr;
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 	int i;
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+	mutex_lock(&int34x_zone->trip_mutex);
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+
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 	int34x_zone->crt_trip_id = -1;
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 	if (!int340x_thermal_get_trip_config(int34x_zone->adev->handle, "_CRT",
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 					     &int34x_zone->crt_temp))
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@@ -201,6 +211,8 @@
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 		int34x_zone->act_trips[i].valid = true;
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 	}
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+	mutex_unlock(&int34x_zone->trip_mutex);
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+
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 	return trip_cnt;
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 }
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 EXPORT_SYMBOL_GPL(int340x_thermal_read_trips);
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@@ -223,6 +235,8 @@
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 				      GFP_KERNEL);
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 	if (!int34x_thermal_zone)
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 		return ERR_PTR(-ENOMEM);
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+
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+	mutex_init(&int34x_thermal_zone->trip_mutex);
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 	int34x_thermal_zone->adev = adev;
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 	int34x_thermal_zone->override_ops = override_ops;
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@@ -275,6 +289,7 @@
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 	acpi_lpat_free_conversion_table(int34x_thermal_zone->lpat_table);
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 	kfree(int34x_thermal_zone->aux_trips);
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 err_trip_alloc:
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+	mutex_destroy(&int34x_thermal_zone->trip_mutex);
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 	kfree(int34x_thermal_zone);
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 	return ERR_PTR(ret);
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 }
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@@ -286,6 +301,7 @@
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 	thermal_zone_device_unregister(int34x_thermal_zone->zone);
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 	acpi_lpat_free_conversion_table(int34x_thermal_zone->lpat_table);
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 	kfree(int34x_thermal_zone->aux_trips);
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+	mutex_destroy(&int34x_thermal_zone->trip_mutex);
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 	kfree(int34x_thermal_zone);
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 }
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 EXPORT_SYMBOL_GPL(int340x_thermal_zone_remove);