/**
 * vpbe_initialize() - Initialize the vpbe display controller
 * @vpbe_dev - vpbe device ptr
 *
 * Master frame buffer device drivers calls this to initialize vpbe
 * display controller. This will then registers v4l2 device and the sub
 * devices and sets a current encoder sub device for display. v4l2 display
 * device driver is the master and frame buffer display device driver is
 * the slave. Frame buffer display driver checks the initialized during
 * probe and exit if not initialized. Returns status.
 */
static int vpbe_initialize(struct device *dev, struct vpbe_device *vpbe_dev)
{
	struct encoder_config_info *enc_info;
	struct amp_config_info *amp_info;
	struct v4l2_subdev **enc_subdev;
	struct osd_state *osd_device;
	struct i2c_adapter *i2c_adap;
	int num_encoders;
	int ret = 0;
	int err;
	int i;

	/*
	 * v4l2 abd FBDev frame buffer devices will get the vpbe_dev pointer
	 * from the platform device by iteration of platform drivers and
	 * matching with device name
	 */
	if (NULL == vpbe_dev || NULL == dev) {
		printk(KERN_ERR "Null device pointers.\n");
		return -ENODEV;
	}

	if (vpbe_dev->initialized)
		return 0;

	mutex_lock(&vpbe_dev->lock);

	if (strcmp(vpbe_dev->cfg->module_name, "dm644x-vpbe-display") != 0) {
		/* We have dac clock available for platform */
		vpbe_dev->dac_clk = clk_get(vpbe_dev->pdev, "vpss_dac");
		if (IS_ERR(vpbe_dev->dac_clk)) {
			ret =  PTR_ERR(vpbe_dev->dac_clk);
			goto fail_mutex_unlock;
		}
		if (clk_prepare_enable(vpbe_dev->dac_clk)) {
			ret =  -ENODEV;
			goto fail_mutex_unlock;
		}
	}

	/* first enable vpss clocks */
	vpss_enable_clock(VPSS_VPBE_CLOCK, 1);

	/* First register a v4l2 device */
	ret = v4l2_device_register(dev, &vpbe_dev->v4l2_dev);
	if (ret) {
		v4l2_err(dev->driver,
			"Unable to register v4l2 device.\n");
		goto fail_clk_put;
	}
	v4l2_info(&vpbe_dev->v4l2_dev, "vpbe v4l2 device registered\n");

	err = bus_for_each_dev(&platform_bus_type, NULL, vpbe_dev,
			       platform_device_get);
	if (err < 0) {
		ret = err;
		goto fail_dev_unregister;
	}

	vpbe_dev->venc = venc_sub_dev_init(&vpbe_dev->v4l2_dev,
					   vpbe_dev->cfg->venc.module_name);
	/* register venc sub device */
	if (vpbe_dev->venc == NULL) {
		v4l2_err(&vpbe_dev->v4l2_dev,
			"vpbe unable to init venc sub device\n");
		ret = -ENODEV;
		goto fail_dev_unregister;
	}
	/* initialize osd device */
	osd_device = vpbe_dev->osd_device;

	if (NULL != osd_device->ops.initialize) {
		err = osd_device->ops.initialize(osd_device);
		if (err) {
			v4l2_err(&vpbe_dev->v4l2_dev,
				 "unable to initialize the OSD device");
			err = -ENOMEM;
			goto fail_dev_unregister;
		}
	}

	/*
	 * Register any external encoders that are configured. At index 0 we
	 * store venc sd index.
	 */
	num_encoders = vpbe_dev->cfg->num_ext_encoders + 1;
	vpbe_dev->encoders = kmalloc(
				sizeof(struct v4l2_subdev *)*num_encoders,
				GFP_KERNEL);
//.........这里部分代码省略.........

static void mcb_devices_unregister(struct mcb_bus *bus)
{
    bus_for_each_dev(&mcb_bus_type, NULL, NULL, __mcb_devices_unregister);
}

static void iommu_bus_init(struct bus_type *bus, struct iommu_ops *ops)
{
	bus_register_notifier(bus, &iommu_device_nb);
	bus_for_each_dev(bus, NULL, NULL, add_iommu_group);
}

/**
 * driver_attach - try to bind driver to devices.
 * @drv: driver.
 *
 * Walk the list of devices that the bus has on it and try to
 * match the driver with each one.  If driver_probe_device()
 * returns 0 and the @dev->driver is set, we've found a
 * compatible pair.
 */
int driver_attach(struct device_driver *drv)
{
	return bus_for_each_dev(drv->bus, NULL, drv, __driver_attach);
}

static uint32_t register_client_legacy(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 0;
	}

	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));
		if (!srcfab) {
			MSM_BUS_ERR("Fabric not found\n");
			goto err;
		}

		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);
	return 0;
}

static void pr_spi_devices(void)
{
	pr_info(DRVNAME": SPI devices registered:\n");
	bus_for_each_dev(&spi_bus_type, NULL, NULL, spi_device_found);
	pr_info(DRVNAME":\n");
}

int stm_check_wakeup_devices(struct stm_wakeup_devices *wkd)
{
	stm_wake_init(wkd);
	bus_for_each_dev(&platform_bus_type, NULL, wkd, __check_wakeup_device);
	return 0;
}

int msm_bus_device_remove(struct platform_device *pdev)
{
	bus_for_each_dev(&msm_bus_type, NULL, NULL, msm_bus_free_dev);
	return 0;
}

static int exists_disconnected_device(struct device_driver *drv)
{
	return bus_for_each_dev(&xenbus_frontend.bus, NULL, drv,
				is_disconnected_device);
}

static int msm_bus_device_probe(struct platform_device *pdev)
{
	unsigned int i, ret;
	struct msm_bus_device_node_registration *pdata;

	/* If possible, get pdata from device-tree */
	if (pdev->dev.of_node)
		pdata = msm_bus_of_to_pdata(pdev);
	else {
		pdata = (struct msm_bus_device_node_registration *)pdev->
			dev.platform_data;
	}

	if (IS_ERR_OR_NULL(pdata)) {
		MSM_BUS_ERR("No platform data found");
		ret = -ENODATA;
		goto exit_device_probe;
	}

	for (i = 0; i < pdata->num_devices; i++) {
		struct device *node_dev = NULL;

		node_dev = msm_bus_device_init(&pdata->info[i]);

		if (!node_dev) {
			MSM_BUS_ERR("%s: Error during dev init for %d",
				__func__, pdata->info[i].node_info->id);
			ret = -ENXIO;
			goto exit_device_probe;
		}

		ret = msm_bus_init_clk(node_dev, &pdata->info[i]);
		/*Is this a fabric device ?*/
		if (pdata->info[i].node_info->is_fab_dev) {
			MSM_BUS_DBG("%s: %d is a fab", __func__,
						pdata->info[i].node_info->id);
			ret = msm_bus_fabric_init(node_dev, &pdata->info[i]);
			if (ret) {
				MSM_BUS_ERR("%s: Error intializing fab %d",
					__func__, pdata->info[i].node_info->id);
				goto exit_device_probe;
			}
		}
	}

	ret = bus_for_each_dev(&msm_bus_type, NULL, NULL,
						msm_bus_setup_dev_conn);
	if (ret) {
		MSM_BUS_ERR("%s: Error setting up dev connections", __func__);
		goto exit_device_probe;
	}

	ret = bus_for_each_dev(&msm_bus_type, NULL, NULL, msm_bus_dev_init_qos);
	if (ret) {
		MSM_BUS_ERR("%s: Error during qos init", __func__);
		goto exit_device_probe;
	}

	bus_for_each_dev(&msm_bus_type, NULL, NULL, msm_bus_node_debug);

	/* Register the arb layer ops */
	msm_bus_arb_setops_adhoc(&arb_ops);
	devm_kfree(&pdev->dev, pdata->info);
	devm_kfree(&pdev->dev, pdata);
exit_device_probe:
	return ret;
}

/**
 *	driver_attach - try to bind driver to devices.
 *	@drv:	driver.
 *
 *	Walk the list of devices that the bus has on it and try to
 *	match the driver with each one.  If driver_probe_device()
 *	returns 0 and the @dev->driver is set, we've found a
 *	compatible pair.
 */
void driver_attach(struct device_driver * drv)
{
	bus_for_each_dev(drv->bus, NULL, drv, __driver_attach);
}

/**
 * mcb_bus_add_devices() - Add devices in the bus' internal device list
 * @bus: The @mcb_bus we add the devices
 *
 * Add devices in the bus' internal device list to the system.
 */
void mcb_bus_add_devices(const struct mcb_bus *bus)
{
    bus_for_each_dev(&mcb_bus_type, NULL, NULL, __mcb_bus_add_devices);
    bus_for_each_dev(&mcb_bus_type, NULL, NULL, __mcb_bus_add_child);

}

/**
 * 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;
	unsigned long req_clk, req_bw, curr_clk, curr_bw;
	struct msm_bus_client *client = (struct msm_bus_client *)cl;
	if (IS_ERR(client)) {
		MSM_BUS_ERR("msm_bus_scale_client update req error %d\n",
				(uint32_t)client);
		return -ENXIO;
	}

	mutex_lock(&msm_bus_lock);
	if (client->curr == index)
		goto err;

	curr = client->curr;
	pdata = client->pdata;

	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;
		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: %lu ib: %lu\n", curr_bw, curr_clk);
		}

		if (!pdata->active_only) {
			ret = update_path(src, pnode, req_clk, req_bw,
				curr_clk, curr_bw, 0, pdata->active_only);
			if (ret) {
				MSM_BUS_ERR("Update path failed! %d\n", ret);
				goto err;
			}
		}

		ret = update_path(src, pnode, req_clk, req_bw, curr_clk,
				curr_bw, ACTIVE_CTX, pdata->active_only);
		if (ret) {
			MSM_BUS_ERR("Update Path failed! %d\n", ret);
			goto err;
		}
	}

	client->curr = index;
	ctx = ACTIVE_CTX;
	msm_bus_dbg_client_data(client->pdata, index, cl);
	bus_for_each_dev(&msm_bus_type, NULL, NULL, msm_bus_commit_fn);

err:
	mutex_unlock(&msm_bus_lock);
	return ret;
}

void hsi_bus_exit(void)
{
	bus_for_each_dev(&hsi_bus_type, NULL, NULL, hsi_bus_unreg_dev);
	bus_unregister(&hsi_bus_type);
}

static int msm_pil_shutdown_at_boot(void)
{
	return bus_for_each_dev(&pil_bus_type, NULL, NULL, __msm_pil_shutdown);
}

static int __init omap_device_late_init(void)
{
    bus_for_each_dev(&platform_bus_type, NULL, NULL, omap_device_late_idle);
    return 0;
}

//.........这里部分代码省略.........
	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->
			buswidth, req_clk);
		*hop->pnode[index].sel_bw += add_bw;
		MSM_BUS_DBG("fabric: %d slave: %d, slave-width: %d info: %d\n",
			fabdev->id, hop->node_info->priv_id, hop->node_info->
			buswidth, info->node_info->priv_id);
		/* Update Bandwidth */
		fabdev->algo->update_bw(fabdev, hop, info, add_bw,
			master_tiers, ctx);
		bwsum = *hop->link_info.sel_bw;
		/* Update Fabric clocks */
		curr_clk_hz = BW_TO_CLK_FREQ_HZ(hop->node_info->buswidth,
			curr_clk);
		req_clk_hz = BW_TO_CLK_FREQ_HZ(hop->node_info->buswidth,
			req_clk);
		bwsum_hz = BW_TO_CLK_FREQ_HZ(hop->node_info->buswidth,
			bwsum);
		/* Account for multiple channels if any */
		if (hop->node_info->num_sports > 1)
			bwsum_hz = msm_bus_div64(hop->node_info->num_sports,
				bwsum_hz);
		MSM_BUS_DBG("AXI: Hop: %d, ports: %d, bwsum_hz: %llu\n",
				hop->node_info->id, hop->node_info->num_sports,
				bwsum_hz);
		MSM_BUS_DBG("up-clk: curr_hz: %llu, req_hz: %llu, bw_hz %llu\n",
			curr_clk, req_clk, bwsum_hz);
		ret = fabdev->algo->update_clks(fabdev, hop, index,
			curr_clk_hz, req_clk_hz, bwsum_hz, SEL_FAB_CLK,
			ctx, cl_active_flag);
		if (ret)
			MSM_BUS_WARN("Failed to update clk\n");
		info = hop;
	} while (GET_NODE(info->pnode[index].next) != info->node_info->priv_id);

	/* Update BW, clk after exiting the loop for the last one */
	if (!info) {
		MSM_BUS_ERR("Cannot find node info!\n");
		return -ENXIO;
	}

	/* Update slave clocks */
	ret = fabdev->algo->update_clks(fabdev, info, index, curr_clk_hz,
	    req_clk_hz, bwsum_hz, SEL_SLAVE_CLK, ctx, cl_active_flag);
	if (ret)
		MSM_BUS_ERR("Failed to update clk\n");

	if ((ctx == cl_active_flag) &&
		((src_info->node_info->nr_lim || src_info->node_info->rt_mas)))
		setup_nr_limits(curr, pnode);

	/* If freq is going down , apply the changes now before
	 * we commit clk data.
	 */
	if ((req_clk < curr_clk) || (req_bw < curr_bw))
		bus_for_each_dev(&msm_bus_type, NULL, NULL,
					msm_bus_commit_limiter);
	return ret;
}

/**
 * proc_scsi_show - show contents of /proc/scsi/scsi (attached devices)
 * @s: output goes here
 * @p: not used
 */
static int proc_scsi_show(struct seq_file *s, void *p)
{
    seq_printf(s, "Attached devices:\n");
    bus_for_each_dev(&scsi_bus_type, NULL, s, proc_print_scsidevice);
    return 0;
}

static int update_request_legacy(uint32_t cl, unsigned index)
{
	int i, ret = 0;
	struct msm_bus_scale_pdata *pdata;
	int pnode, src = 0, curr, ctx;
	uint64_t req_clk = 0, req_bw = 0, curr_clk = 0, curr_bw = 0;
	struct msm_bus_client *client = (struct msm_bus_client *)cl;
	if (IS_ERR_OR_NULL(client)) {
		MSM_BUS_ERR("msm_bus_scale_client update req error %d\n",
				(uint32_t)client);
		return -ENXIO;
	}

	mutex_lock(&msm_bus_lock);
	if (client->curr == index)
		goto err;

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

	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;
		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) {
			ret = update_path(src, pnode, req_clk, req_bw,
				curr_clk, curr_bw, 0, pdata->active_only);
			if (ret) {
				MSM_BUS_ERR("Update path failed! %d\n", ret);
				goto err;
			}
		}

		ret = update_path(src, pnode, req_clk, req_bw, curr_clk,
				curr_bw, ACTIVE_CTX, pdata->active_only);
		if (ret) {
			MSM_BUS_ERR("Update Path failed! %d\n", ret);
			goto err;
		}
	}

	client->curr = index;
	ctx = ACTIVE_CTX;
	msm_bus_dbg_client_data(client->pdata, index, cl);
	bus_for_each_dev(&msm_bus_type, NULL, NULL, msm_bus_commit_fn);

	/* For NR/RT limited masters, if freq is going up , apply the changes
	 * after we commit clk data.
	 */
	if (is_nr_lim(src) && ((req_clk > curr_clk) || (req_bw > curr_bw)))
		bus_for_each_dev(&msm_bus_type, NULL, NULL,
					msm_bus_commit_limiter);

err:
	mutex_unlock(&msm_bus_lock);
	return ret;
}

//.........这里部分代码省略.........
		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) {
			ret = update_path(src, pnode, req_clk, req_bw,
				curr_clk, curr_bw, 0, pdata->active_only);
			if (ret) {
				MSM_BUS_ERR("Update path failed! %d\n", ret);
				goto err;
			}
		}

		ret = update_path(src, pnode, req_clk, req_bw, curr_clk,
				curr_bw, ACTIVE_CTX, pdata->active_only);
		if (ret) {
			MSM_BUS_ERR("Update Path failed! %d\n", ret);
			goto err;
		}
	}

	client->curr = index;
	ctx = ACTIVE_CTX;
	msm_bus_dbg_client_data(client->pdata, index, cl);
	bus_for_each_dev(&msm_bus_type, NULL, NULL, msm_bus_commit_fn);

err:
#ifdef SEC_FEATURE_USE_RT_MUTEX
	rt_mutex_unlock(&msm_bus_lock);
#else
	mutex_unlock(&msm_bus_lock);
#endif
	return ret;
}