int reset_pnodes(int curr, int pnode)
{
	struct msm_bus_inode_info *info;
	struct msm_bus_fabric_device *fabdev;
	int index, next_pnode;
	fabdev = msm_bus_get_fabric_device(GET_FABID(curr));
	if (!fabdev) {
		MSM_BUS_ERR("Fabric not found for: %d\n",
			(GET_FABID(curr)));
			return -ENXIO;
	}

	index = GET_INDEX(pnode);
	info = fabdev->algo->find_node(fabdev, curr);
	if (!info) {
		MSM_BUS_ERR("Cannot find node info!\n");
		return -ENXIO;
	}

	MSM_BUS_DBG("Starting the loop--remove\n");
	do {
		struct msm_bus_inode_info *hop;
		fabdev = msm_bus_get_fabric_device(GET_FABID(curr));
		if (!fabdev) {
			MSM_BUS_ERR("Fabric not found\n");
				return -ENXIO;
		}

		next_pnode = info->pnode[index].next;
		info->pnode[index].next = -2;
		curr = GET_NODE(next_pnode);
		index = GET_INDEX(next_pnode);
		if (IS_NODE(curr))
			hop = fabdev->algo->find_node(fabdev, curr);
		else
			hop = fabdev->algo->find_gw_node(fabdev, curr);
		if (!hop) {
			MSM_BUS_ERR("Null Info found for hop\n");
			return -ENXIO;
		}

		MSM_BUS_DBG("%d[%d] = %d\n", info->node_info->priv_id, index,
			info->pnode[index].next);
		MSM_BUS_DBG("num_pnodes: %d: %d\n", info->node_info->priv_id,
			info->num_pnodes);
		info = hop;
	} while (GET_NODE(info->pnode[index].next) != info->node_info->priv_id);

	info->pnode[index].next = -2;
	MSM_BUS_DBG("%d[%d] = %d\n", info->node_info->priv_id, index,
		info->pnode[index].next);
	MSM_BUS_DBG("num_pnodes: %d: %d\n", info->node_info->priv_id,
		info->num_pnodes);
	return 0;
}

static void setup_nr_limits(int curr, int pnode)
{
	struct msm_bus_fabric_device *fabdev =
		msm_bus_get_fabric_device(GET_FABID(curr));
	struct msm_bus_inode_info *info;

	if (!fabdev) {
		MSM_BUS_WARN("Fabric Not yet registered. Try again\n");
		goto exit_setup_nr_limits;
	}

	/* This logic is currently applicable to BIMC masters only */
	if (fabdev->id != MSM_BUS_FAB_DEFAULT) {
		MSM_BUS_ERR("Static limiting of NR masters only for BIMC\n");
		goto exit_setup_nr_limits;
	}

	info = fabdev->algo->find_node(fabdev, curr);
	if (!info) {
		MSM_BUS_ERR("Cannot find node info!\n");
		goto exit_setup_nr_limits;
	}

	compute_nr_limits(fabdev, pnode);
exit_setup_nr_limits:
	return;
}

static uint64_t get_vfe_bw(void)
{
	int vfe_id = MSM_BUS_MASTER_VFE;
	int iid = msm_bus_board_get_iid(vfe_id);
	int fabid;
	struct msm_bus_fabric_device *fabdev;
	struct msm_bus_inode_info *info;
	uint64_t vfe_bw = 0;

	fabid = GET_FABID(iid);
	fabdev = msm_bus_get_fabric_device(fabid);
	if (!fabdev) {
		MSM_BUS_ERR("Fabric not found for: %d\n", fabid);
		goto exit_get_vfe_bw;
	}
	info = fabdev->algo->find_node(fabdev, iid);
	if (!info) {
		MSM_BUS_ERR("%s: Can't find node %d", __func__,
						vfe_id);
		goto exit_get_vfe_bw;
	}

	vfe_bw = get_node_sumab(info);
	MSM_BUS_DBG("vfe_ab %llu", vfe_bw);

exit_get_vfe_bw:
	return vfe_bw;
}

int msm_bus_axi_portunhalt(int master_port)
{
	int ret = 0;
	int priv_id;
	struct msm_bus_fabric_device *fabdev;

	priv_id = msm_bus_board_get_iid(master_port);
	MSM_BUS_DBG("master_port: %d iid: %d fabid: %d\n",
		master_port, priv_id, GET_FABID(priv_id));
	fabdev = msm_bus_get_fabric_device(GET_FABID(priv_id));
	if (IS_ERR_OR_NULL(fabdev)) {
		MSM_BUS_ERR("Fabric device not found for mport: %d\n",
			master_port);
		return -ENODEV;
	}
	mutex_lock(&msm_bus_config_lock);
	ret = fabdev->algo->port_unhalt(fabdev, priv_id);
	mutex_unlock(&msm_bus_config_lock);
	return ret;
}

static bool is_nr_lim(int id)
{
	struct msm_bus_fabric_device *fabdev = msm_bus_get_fabric_device
		(GET_FABID(id));
	struct msm_bus_inode_info *info;
	bool ret = false;

	if (!fabdev) {
		MSM_BUS_ERR("Bus device for bus ID: %d not found!\n",
			GET_FABID(id));
		goto exit_is_nr_lim;
	}

	info = fabdev->algo->find_node(fabdev, id);
	if (!info)
		MSM_BUS_ERR("Cannot find node info %d!\n", id);
	else if ((info->node_info->nr_lim || info->node_info->rt_mas))
		ret = true;
exit_is_nr_lim:
	return ret;
}

static uint64_t get_mdp_bw(void)
{
	int ids[] = {MSM_BUS_MASTER_MDP_PORT0, MSM_BUS_MASTER_MDP_PORT1};
	int i;
	uint64_t mdp_ab = 0;
	uint32_t ff = 0;

	for (i = 0; i < ARRAY_SIZE(ids); i++) {
		int iid = msm_bus_board_get_iid(ids[i]);
		int fabid;
		struct msm_bus_fabric_device *fabdev;
		struct msm_bus_inode_info *info;

		fabid = GET_FABID(iid);
		fabdev = msm_bus_get_fabric_device(fabid);
		if (!fabdev) {
			MSM_BUS_ERR("Fabric not found for: %d\n", fabid);
			continue;
		}
		info = fabdev->algo->find_node(fabdev, iid);
		if (!info) {
			MSM_BUS_ERR("%s: Can't find node %d", __func__,
								ids[i]);
			continue;
		}

		mdp_ab += get_node_sumab(info);
		MSM_BUS_DBG("mdp_ab %llu", mdp_ab);
		ff = info->node_info->ff;
	}

	if (ff) {
		mdp_ab = msm_bus_div64(2 * ff, 100 * mdp_ab);
	} else {
		MSM_BUS_ERR("MDP FF is 0");
		mdp_ab = 0;
	}


	MSM_BUS_DBG("MDP BW %llu\n", mdp_ab);
	return mdp_ab;
}

/**
 * msm_bus_scale_register_client() - Register the clients with the msm bus
 * driver
 * @pdata: Platform data of the client, containing src, dest, ab, ib
 *
 * Client data contains the vectors specifying arbitrated bandwidth (ab)
 * and instantaneous bandwidth (ib) requested between a particular
 * src and dest.
 */
uint32_t msm_bus_scale_register_client(struct msm_bus_scale_pdata *pdata)
{
	struct msm_bus_client *client = NULL;
	int i;
	int src, dest, nfab;
	struct msm_bus_fabric_device *deffab;

	deffab = msm_bus_get_fabric_device(MSM_BUS_FAB_DEFAULT);
	if (!deffab) {
		MSM_BUS_ERR("Error finding default fabric\n");
		return -ENXIO;
	}

	nfab = msm_bus_get_num_fab();
	if (nfab < deffab->board_algo->board_nfab) {
		MSM_BUS_ERR("Can't register client!\n"
				"Num of fabrics up: %d\n",
				nfab);
		return 0;
	}

	if ((!pdata) || (pdata->usecase->num_paths == 0) || IS_ERR(pdata)) {
		MSM_BUS_ERR("Cannot register client with null data\n");
		return 0;
	}

	client = kzalloc(sizeof(struct msm_bus_client), GFP_KERNEL);
	if (!client) {
		MSM_BUS_ERR("Error allocating client\n");
		return 0;
	}

	mutex_lock(&msm_bus_lock);
	client->pdata = pdata;
	client->curr = -1;
	for (i = 0; i < pdata->usecase->num_paths; i++) {
		int *pnode;
		struct msm_bus_fabric_device *srcfab;
		pnode = krealloc(client->src_pnode, ((i + 1) * sizeof(int)),
			GFP_KERNEL);
		if (ZERO_OR_NULL_PTR(pnode)) {
			MSM_BUS_ERR("Invalid Pnode ptr!\n");
			continue;
		} else
			client->src_pnode = pnode;

		if (!IS_MASTER_VALID(pdata->usecase->vectors[i].src)) {
			MSM_BUS_ERR("Invalid Master ID %d in request!\n",
				pdata->usecase->vectors[i].src);
			goto err;
		}

		if (!IS_SLAVE_VALID(pdata->usecase->vectors[i].dst)) {
			MSM_BUS_ERR("Invalid Slave ID %d in request!\n",
				pdata->usecase->vectors[i].dst);
			goto err;
		}

		src = msm_bus_board_get_iid(pdata->usecase->vectors[i].src);
		if (src == -ENXIO) {
			MSM_BUS_ERR("Master %d not supported. Client cannot be"
				" registered\n",
				pdata->usecase->vectors[i].src);
			goto err;
		}
		dest = msm_bus_board_get_iid(pdata->usecase->vectors[i].dst);
		if (dest == -ENXIO) {
			MSM_BUS_ERR("Slave %d not supported. Client cannot be"
				" registered\n",
				pdata->usecase->vectors[i].dst);
			goto err;
		}
		srcfab = msm_bus_get_fabric_device(GET_FABID(src));
		srcfab->visited = true;
		pnode[i] = getpath(src, dest);
		bus_for_each_dev(&msm_bus_type, NULL, NULL, clearvisitedflag);
		if (pnode[i] == -ENXIO) {
			MSM_BUS_ERR("Cannot register client now! Try again!\n");
			goto err;
		}
	}
	msm_bus_dbg_client_data(client->pdata, MSM_BUS_DBG_REGISTER,
		(uint32_t)client);
	mutex_unlock(&msm_bus_lock);
	MSM_BUS_DBG("ret: %u num_paths: %d\n", (uint32_t)client,
		pdata->usecase->num_paths);
	return (uint32_t)(client);
err:
	kfree(client->src_pnode);
	kfree(client);
	mutex_unlock(&msm_bus_lock);
//.........这里部分代码省略.........

/**
 * update_path() - Update the path with the bandwidth and clock values, as
 * requested by the client.
 *
 * @curr: Current source node, as specified in the client vector (master)
 * @pnode: The first-hop node on the path, stored in the internal client struct
 * @req_clk: Requested clock value from the vector
 * @req_bw: Requested bandwidth value from the vector
 * @curr_clk: Current clock frequency
 * @curr_bw: Currently allocated bandwidth
 *
 * This function updates the nodes on the path calculated using getpath(), with
 * clock and bandwidth values. The sum of bandwidths, and the max of clock
 * frequencies is calculated at each node on the path. Commit data to be sent
 * to RPM for each master and slave is also calculated here.
 */
static int update_path(int curr, int pnode, unsigned long req_clk, unsigned
	long req_bw, unsigned long curr_clk, unsigned long curr_bw,
	unsigned int ctx, unsigned int cl_active_flag)
{
	int index, ret = 0;
	struct msm_bus_inode_info *info;
	int next_pnode;
	long int add_bw = req_bw - curr_bw;
	unsigned bwsum = 0;
	unsigned req_clk_hz, curr_clk_hz, bwsum_hz;
	int *master_tiers;
	struct msm_bus_fabric_device *fabdev = msm_bus_get_fabric_device
		(GET_FABID(curr));

	MSM_BUS_DBG("args: %d %d %d %lu %lu %lu %lu %u\n",
		curr, GET_NODE(pnode), GET_INDEX(pnode), req_clk, req_bw,
		curr_clk, curr_bw, ctx);
	index = GET_INDEX(pnode);
	MSM_BUS_DBG("Client passed index :%d\n", index);
	info = fabdev->algo->find_node(fabdev, curr);
	if (!info) {
		MSM_BUS_ERR("Cannot find node info!\n");
		return -ENXIO;
	}

	info->link_info.sel_bw = &info->link_info.bw[ctx];
	info->link_info.sel_clk = &info->link_info.clk[ctx];
	*info->link_info.sel_bw += add_bw;

	info->pnode[index].sel_bw = &info->pnode[index].bw[ctx];

	/**
	 * To select the right clock, AND the context with
	 * client active flag.
	 */
	info->pnode[index].sel_clk = &info->pnode[index].clk[ctx &
		cl_active_flag];
	*info->pnode[index].sel_bw += add_bw;

	info->link_info.num_tiers = info->node_info->num_tiers;
	info->link_info.tier = info->node_info->tier;
	master_tiers = info->node_info->tier;

	do {
		struct msm_bus_inode_info *hop;
		fabdev = msm_bus_get_fabric_device(GET_FABID(curr));
		if (!fabdev) {
			MSM_BUS_ERR("Fabric not found\n");
			return -ENXIO;
		}
		MSM_BUS_DBG("id: %d\n", info->node_info->priv_id);

		/* find next node and index */
		next_pnode = info->pnode[index].next;
		curr = GET_NODE(next_pnode);
		index = GET_INDEX(next_pnode);
		MSM_BUS_DBG("id:%d, next: %d\n", info->
		    node_info->priv_id, curr);

		/* Get hop */
		/* check if we are here as gateway, or does the hop belong to
		 * this fabric */
		if (IS_NODE(curr))
			hop = fabdev->algo->find_node(fabdev, curr);
		else
			hop = fabdev->algo->find_gw_node(fabdev, curr);
		if (!hop) {
			MSM_BUS_ERR("Null Info found for hop\n");
			return -ENXIO;
		}

		hop->link_info.sel_bw = &hop->link_info.bw[ctx];
		hop->link_info.sel_clk = &hop->link_info.clk[ctx];
		*hop->link_info.sel_bw += add_bw;

		hop->pnode[index].sel_bw = &hop->pnode[index].bw[ctx];
		hop->pnode[index].sel_clk = &hop->pnode[index].clk[ctx &
			cl_active_flag];

		if (!hop->node_info->buswidth) {
			MSM_BUS_WARN("No bus width found. Using default\n");
			hop->node_info->buswidth = 8;
		}
		*hop->pnode[index].sel_clk = BW_TO_CLK_FREQ_HZ(hop->node_info->
//.........这里部分代码省略.........

/**
 * getpath() - Finds the path from the topology between src and dest
 * @src: Source. This is the master from which the request originates
 * @dest: Destination. This is the slave to which we're trying to reach
 *
 * Function returns: next_pnode_id. The higher 16 bits of the next_pnode_id
 * represent the src id of the  next node on path. The lower 16 bits of the
 * next_pnode_id represent the "index", which is the next entry in the array
 * of pnodes for that node to fill in clk and bw values. This is created using
 * CREATE_PNODE_ID. The return value is stored in ret_pnode, and this is added
 * to the list of path nodes.
 *
 * This function recursively finds the path by updating the src to the
 * closest possible node to dest.
 */
static int getpath(int src, int dest)
{
	int pnode_num = -1, i;
	struct msm_bus_fabnodeinfo *fabnodeinfo;
	struct msm_bus_fabric_device *fabdev;
	int next_pnode_id = -1;
	struct msm_bus_inode_info *info = NULL;
	int _src = src/FABRIC_ID_KEY;
	int _dst = dest/FABRIC_ID_KEY;
	int ret_pnode = -1;
	int fabid = GET_FABID(src);

	/* Find the location of fabric for the src */
	MSM_BUS_DBG("%d --> %d\n", src, dest);

	fabdev = msm_bus_get_fabric_device(fabid);
	if (!fabdev) {
		MSM_BUS_WARN("Fabric Not yet registered. Try again\n");
		return -ENXIO;
	}

	/* Are we there yet? */
	if (src == dest) {
		info = fabdev->algo->find_node(fabdev, src);
		if (ZERO_OR_NULL_PTR(info)) {
			MSM_BUS_ERR("Node %d not found\n", dest);
			return -ENXIO;
		}

		for (i = 0; i <= info->num_pnodes; i++) {
			if (info->pnode[i].next == -2) {
				MSM_BUS_DBG("src = dst  Reusing pnode for"
				" info: %d at index: %d\n",
				info->node_info->priv_id, i);
				next_pnode_id = CREATE_PNODE_ID(src, i);
				info->pnode[i].clk[DUAL_CTX] = 0;
				info->pnode[i].bw[DUAL_CTX] = 0;
				info->pnode[i].next = next_pnode_id;
				MSM_BUS_DBG("returning: %d, %d\n", GET_NODE
				(next_pnode_id), GET_INDEX(next_pnode_id));
				return next_pnode_id;
			}
		}
		next_pnode_id = CREATE_PNODE_ID(src, (info->num_pnodes + 1));
		pnode_num = add_path_node(info, next_pnode_id);
		if (pnode_num < 0) {
			MSM_BUS_ERR("Error adding path node\n");
			return -ENXIO;
		}
		MSM_BUS_DBG("returning: %d, %d\n", GET_NODE(next_pnode_id),
			GET_INDEX(next_pnode_id));
		return next_pnode_id;
	} else if (_src == _dst) {
		/*
		 * src and dest belong to same fabric, find the destination
		 * from the radix tree
		 */
		info = fabdev->algo->find_node(fabdev, dest);
		if (ZERO_OR_NULL_PTR(info)) {
			MSM_BUS_ERR("Node %d not found\n", dest);
			return -ENXIO;
		}

		ret_pnode = getpath(info->node_info->priv_id, dest);
		next_pnode_id = ret_pnode;
	} else {
		/* find the dest fabric */
		int trynextgw = true;
		struct list_head *gateways = fabdev->algo->get_gw_list(fabdev);
		list_for_each_entry(fabnodeinfo, gateways, list) {
		/* see if the destination is at a connected fabric */
			if (_dst == (fabnodeinfo->info->node_info->priv_id /
				FABRIC_ID_KEY)) {
				/* Found the fab on which the device exists */
				info = fabnodeinfo->info;
				trynextgw = false;
				ret_pnode = getpath(info->node_info->priv_id,
					dest);
				pnode_num = add_path_node(info, ret_pnode);
				if (pnode_num < 0) {
					MSM_BUS_ERR("Error adding path node\n");
					return -ENXIO;
				}
				next_pnode_id = CREATE_PNODE_ID(
					info->node_info->priv_id, pnode_num);
//.........这里部分代码省略.........

/**
 * msm_bus_scale_client_update_request() - Update the request for bandwidth
 * from a particular client
 *
 * cl: Handle to the client
 * index: Index into the vector, to which the bw and clock values need to be
 * updated
 */
int msm_bus_scale_client_update_request(uint32_t cl, unsigned index)
{
	int i, ret = 0;
	struct msm_bus_scale_pdata *pdata;
	int pnode, src, curr, ctx;
	uint64_t req_clk, req_bw, curr_clk, curr_bw;
	struct msm_bus_client *client = (struct msm_bus_client *)cl;
#ifdef DEBUG_MSM_BUS_ARB_REQ
	static int log_cnt = 0;
#endif
	if (IS_ERR_OR_NULL(client)) {
		MSM_BUS_ERR("msm_bus_scale_client update req error %d\n",
				(uint32_t)client);
		return -ENXIO;
	}
#ifdef SEC_FEATURE_USE_RT_MUTEX
	rt_mutex_lock(&msm_bus_lock);
#else
	mutex_lock(&msm_bus_lock);
#endif
	if (client->curr == index)
		goto err;

	curr = client->curr;
	pdata = client->pdata;
	if (!pdata) {
		MSM_BUS_ERR("Null pdata passed to update-request\n");
		return -ENXIO;
	}

	if (index >= pdata->num_usecases) {
		MSM_BUS_ERR("Client %u passed invalid index: %d\n",
			(uint32_t)client, index);
		ret = -ENXIO;
		goto err;
	}

	MSM_BUS_DBG("cl: %u index: %d curr: %d num_paths: %d\n",
		cl, index, client->curr, client->pdata->usecase->num_paths);

	for (i = 0; i < pdata->usecase->num_paths; i++) {
		src = msm_bus_board_get_iid(client->pdata->usecase[index].
			vectors[i].src);
		if (src == -ENXIO) {
			MSM_BUS_ERR("Master %d not supported. Request cannot"
				" be updated\n", client->pdata->usecase->
				vectors[i].src);
			goto err;
		}

		if (msm_bus_board_get_iid(client->pdata->usecase[index].
			vectors[i].dst) == -ENXIO) {
			MSM_BUS_ERR("Slave %d not supported. Request cannot"
				" be updated\n", client->pdata->usecase->
				vectors[i].dst);
		}

		pnode = client->src_pnode[i];
		req_clk = client->pdata->usecase[index].vectors[i].ib;
		req_bw = client->pdata->usecase[index].vectors[i].ab;

#ifdef DEBUG_MSM_BUS_ARB_REQ
		//Debug code to collect client info
		{
			struct msm_bus_fabric_device *fabdev_d = msm_bus_get_fabric_device(GET_FABID(src));
			if (MSM_BUS_FAB_APPSS  == fabdev_d->id)
			{
				if (log_cnt >= 1000)
					log_cnt = 0;
				
				log_req[log_cnt].ab = client->pdata->usecase[index].vectors[i].ab;
				log_req[log_cnt].ib = client->pdata->usecase[index].vectors[i].ib;
				log_req[log_cnt].src = client->pdata->usecase[index].vectors[i].src;
				log_req[log_cnt].dst = client->pdata->usecase[index].vectors[i].dst;
				log_req[log_cnt].cnt = arch_counter_get_cntpct(); 
				strncpy(log_req[log_cnt].name, client->pdata->name, 19);
				log_cnt++;
				//printk("*** cl: %s ab: %llu ib: %llu\n", client->pdata->name, req_bw, req_clk);
			}
		}
#endif

		if (curr < 0) {
			curr_clk = 0;
			curr_bw = 0;
		} else {
			curr_clk = client->pdata->usecase[curr].vectors[i].ib;
			curr_bw = client->pdata->usecase[curr].vectors[i].ab;
			MSM_BUS_DBG("ab: %llu ib: %llu\n", curr_bw, curr_clk);
		}

		if (!pdata->active_only) {
//.........这里部分代码省略.........

/**
 * update_path() - Update the path with the bandwidth and clock values, as
 * requested by the client.
 *
 * @curr: Current source node, as specified in the client vector (master)
 * @pnode: The first-hop node on the path, stored in the internal client struct
 * @req_clk: Requested clock value from the vector
 * @req_bw: Requested bandwidth value from the vector
 * @curr_clk: Current clock frequency
 * @curr_bw: Currently allocated bandwidth
 *
 * This function updates the nodes on the path calculated using getpath(), with
 * clock and bandwidth values. The sum of bandwidths, and the max of clock
 * frequencies is calculated at each node on the path. Commit data to be sent
 * to RPM for each master and slave is also calculated here.
 */
static int update_path(int curr, int pnode, uint64_t req_clk, uint64_t req_bw,
	uint64_t curr_clk, uint64_t curr_bw, unsigned int ctx, unsigned int
	cl_active_flag)
{
	int index, ret = 0;
	struct msm_bus_inode_info *info;
	int next_pnode;
	int64_t add_bw = req_bw - curr_bw;
	uint64_t bwsum = 0;
	uint64_t req_clk_hz, curr_clk_hz, bwsum_hz;
	int *master_tiers;
	struct msm_bus_fabric_device *fabdev = msm_bus_get_fabric_device
		(GET_FABID(curr));

	if (!fabdev) {
		MSM_BUS_ERR("Bus device for bus ID: %d not found!\n",
			GET_FABID(curr));
		return -ENXIO;
	}

	MSM_BUS_DBG("args: %d %d %d %llu %llu %llu %llu %u\n",
		curr, GET_NODE(pnode), GET_INDEX(pnode), req_clk, req_bw,
		curr_clk, curr_bw, ctx);
	index = GET_INDEX(pnode);
	MSM_BUS_DBG("Client passed index :%d\n", index);
	info = fabdev->algo->find_node(fabdev, curr);
	if (!info) {
		MSM_BUS_ERR("Cannot find node info!\n");
		return -ENXIO;
	}

#ifndef CONFIG_BW_LIMITER_FIX
	/**
	 * If master supports dual configuration, check if
	 * the configuration needs to be changed based on
	 * incoming requests
	 */
	if (info->node_info->dual_conf)
		fabdev->algo->config_master(fabdev, info,
			req_clk, req_bw);
#endif

	info->link_info.sel_bw = &info->link_info.bw[ctx];
	info->link_info.sel_clk = &info->link_info.clk[ctx];
	*info->link_info.sel_bw += add_bw;

	info->pnode[index].sel_bw = &info->pnode[index].bw[ctx];

	/**
	 * To select the right clock, AND the context with
	 * client active flag.
	 */
	info->pnode[index].sel_clk = &info->pnode[index].clk[ctx &
		cl_active_flag];
	*info->pnode[index].sel_bw += add_bw;

#ifdef CONFIG_BW_LIMITER_FIX
	*info->pnode[index].sel_clk = req_clk;

	/**
	* If master supports dual configuration, check if
	* the configuration needs to be changed based on
	* incoming requests
	*/
	if (info->node_info->dual_conf) {
		uint64_t node_maxib = 0;
		node_maxib = get_node_maxib(info);
		fabdev->algo->config_master(fabdev, info,
			node_maxib, req_bw);
	}
#endif
	info->link_info.num_tiers = info->node_info->num_tiers;
	info->link_info.tier = info->node_info->tier;
	master_tiers = info->node_info->tier;

	do {
		struct msm_bus_inode_info *hop;
		fabdev = msm_bus_get_fabric_device(GET_FABID(curr));
		if (!fabdev) {
			MSM_BUS_ERR("Fabric not found\n");
			return -ENXIO;
		}
		MSM_BUS_DBG("id: %d\n", info->node_info->priv_id);

//.........这里部分代码省略.........