ACPI : Set FAN device to correct state in boot phase (ea51011a) · Commits · 戴 / test

drivers/acpi/thermal.c

+43 −0

Original line number	Diff line number	Diff line
		@@ -769,6 +769,47 @@ static void acpi_thermal_run(unsigned long data)
		acpi_os_execute(OSL_GPE_HANDLER, acpi_thermal_check, (void *)data);
		}

		static void acpi_thermal_active_off(void *data)
		{
		int result = 0;
		struct acpi_thermal *tz = data;
		int i = 0;
		int j = 0;
		struct acpi_thermal_active *active = NULL;

		if (!tz) {
		printk(KERN_ERR PREFIX "Invalid (NULL) context\n");
		return;
		}

		result = acpi_thermal_get_temperature(tz);
		if (result)
		return;

		for (i = 0; i < ACPI_THERMAL_MAX_ACTIVE; i++) {
		active = &(tz->trips.active[i]);
		if (!active \|\| !active->flags.valid)
		break;
		if (tz->temperature >= active->temperature) {
		/*
		* If the thermal temperature is greater than the
		* active threshod, unnecessary to turn off the
		* the active cooling device.
		*/
		continue;
		}
		/*
		* Below Threshold?
		* ----------------
		* Turn OFF all cooling devices associated with this
		* threshold.
		*/
		for (j = 0; j < active->devices.count; j++)
		result = acpi_bus_set_power(active->devices.handles[j],
		ACPI_STATE_D3);
		}
		}

		static void acpi_thermal_check(void *data)
		{
		int result = 0;
		@@ -1624,6 +1665,8 @@ static int acpi_thermal_add(struct acpi_device *device)

		init_timer(&tz->timer);

		acpi_thermal_active_off(tz);

		acpi_thermal_check(tz);

		status = acpi_install_notify_handler(device->handle,