static void set_fan_speeds()

in char/bbc_envctrl.c [93:118]

• 22 lines of code
• 6 McCabe index (conditional complexity)

static void set_fan_speeds(struct bbc_fan_control *fp)
{
	/* Put temperatures into range so we don't mis-program
	 * the hardware.
	 */
	if (fp->cpu_fan_speed < FAN_SPEED_MIN)
		fp->cpu_fan_speed = FAN_SPEED_MIN;
	if (fp->cpu_fan_speed > FAN_SPEED_MAX)
		fp->cpu_fan_speed = FAN_SPEED_MAX;
	if (fp->system_fan_speed < FAN_SPEED_MIN)
		fp->system_fan_speed = FAN_SPEED_MIN;
	if (fp->system_fan_speed > FAN_SPEED_MAX)
		fp->system_fan_speed = FAN_SPEED_MAX;
#ifdef ENVCTRL_TRACE
	printk("fan%d: Changed fan speed to cpu(%02x) sys(%02x)\n",
	       fp->index,
	       fp->cpu_fan_speed, fp->system_fan_speed);
#endif

	bbc_i2c_writeb(fp->client, fp->cpu_fan_speed, CPU_FAN_REG);
	bbc_i2c_writeb(fp->client, fp->system_fan_speed, SYS_FAN_REG);
	bbc_i2c_writeb(fp->client,
		       (fp->psupply_fan_on ?
			PSUPPLY_FAN_ON : PSUPPLY_FAN_OFF),
		       PSUPPLY_FAN_REG);
}