PM / QoS: Simplify PM QoS expansion/merge

#include <linux/miscdevice.h>

#include <linux/device.h>

#define PM_QOS_RESERVED 0

#define PM_QOS_CPU_DMA_LATENCY 1

#define PM_QOS_NETWORK_LATENCY 2

#define PM_QOS_NETWORK_THROUGHPUT 3

enum {

	PM_QOS_RESERVED = 0,

	PM_QOS_CPU_DMA_LATENCY,

	PM_QOS_NETWORK_LATENCY,

	PM_QOS_NETWORK_THROUGHPUT,

	/* insert new class ID */

	PM_QOS_NUM_CLASSES,

};

#define PM_QOS_NUM_CLASSES 4

#define PM_QOS_DEFAULT_VALUE -1

#define PM_QOS_CPU_DMA_LAT_DEFAULT_VALUE	(2000 * USEC_PER_SEC)

static int __init pm_qos_power_init(void)

{

	int ret = 0;

	int i;

	ret = register_pm_qos_misc(&cpu_dma_pm_qos);

	BUILD_BUG_ON(ARRAY_SIZE(pm_qos_array) != PM_QOS_NUM_CLASSES);

	for (i = 1; i < PM_QOS_NUM_CLASSES; i++) {

		ret = register_pm_qos_misc(pm_qos_array[i]);

		if (ret < 0) {

		printk(KERN_ERR "pm_qos_param: cpu_dma_latency setup failed\n");

			printk(KERN_ERR "pm_qos_param: %s setup failed\n",

			       pm_qos_array[i]->name);

			return ret;

		}

	ret = register_pm_qos_misc(&network_lat_pm_qos);

	if (ret < 0) {

		printk(KERN_ERR "pm_qos_param: network_latency setup failed\n");

		return ret;

	}

	ret = register_pm_qos_misc(&network_throughput_pm_qos);

	if (ret < 0)

		printk(KERN_ERR

			"pm_qos_param: network_throughput setup failed\n");

	return ret;

}