C++ destroy_workqueue函数代码示例

//.........这里部分代码省略.........
		goto err_light_device_create;
	}

	if (device_create_file(cm36686->light_dev, &dev_attr_lux) < 0) {
		pr_err("%s: could not create device file(%s)!\n", __func__,
			dev_attr_lux.attr.name);
		goto err_light_device_create_file1;
	}

	if (device_create_file(cm36686->light_dev, &dev_attr_raw_data) < 0) {
		pr_err("%s: could not create device file(%s)!\n", __func__,
			dev_attr_raw_data.attr.name);
		goto err_light_device_create_file2;
	}

	if (device_create_file(cm36686->light_dev, &dev_attr_vendor) < 0) {
		pr_err("%s: could not create device file(%s)!\n", __func__,
			dev_attr_vendor.attr.name);
		goto err_light_device_create_file3;
	}

	if (device_create_file(cm36686->light_dev, &dev_attr_name) < 0) {
		pr_err("%s: could not create device file(%s)!\n", __func__,
			dev_attr_name.attr.name);
		goto err_light_device_create_file4;
	}

	dev_set_drvdata(cm36686->light_dev, cm36686);

	pr_info("%s is success.\n", __func__);
	goto done;

/* error, unwind it all */
err_light_device_create_file4:
	device_remove_file(cm36686->light_dev, &dev_attr_vendor);
err_light_device_create_file3:
	device_remove_file(cm36686->light_dev, &dev_attr_raw_data);
err_light_device_create_file2:
	device_remove_file(cm36686->light_dev, &dev_attr_lux);
err_light_device_create_file1:
	sensors_classdev_unregister(cm36686->light_dev);
err_light_device_create:
	device_remove_file(cm36686->proximity_dev, &dev_attr_thresh_low);
err_proximity_device_create_file9:
	device_remove_file(cm36686->proximity_dev, &dev_attr_name);
err_proximity_device_create_file8:
	device_remove_file(cm36686->proximity_dev, &dev_attr_vendor);
err_proximity_device_create_file7:
	device_remove_file(cm36686->proximity_dev, &dev_attr_thresh_high);
err_proximity_device_create_file6:
	device_remove_file(cm36686->proximity_dev, &dev_attr_prox_avg);
err_proximity_device_create_file5:
#ifdef CM36686_CANCELATION
	device_remove_file(cm36686->proximity_dev, &dev_attr_prox_offset_pass);
err_proximity_device_create_file4:
	device_remove_file(cm36686->proximity_dev, &dev_attr_prox_cal);
err_proximity_device_create_file3:
#endif
	device_remove_file(cm36686->proximity_dev, &attr_prox_raw);
err_proximity_device_create_file2:
	device_remove_file(cm36686->proximity_dev, &dev_attr_state);
err_proximity_device_create_file1:
	sensors_classdev_unregister(cm36686->proximity_dev);
err_proximity_device_create:
	destroy_workqueue(cm36686->light_wq);
err_create_light_workqueue:
	sysfs_remove_group(&cm36686->light_input_dev->dev.kobj,
			   &light_attribute_group);
err_sysfs_create_group_light:
	input_unregister_device(cm36686->light_input_dev);
err_input_register_device_light:
err_input_allocate_device_light:
	destroy_workqueue(cm36686->prox_wq);
err_create_prox_workqueue:
	free_irq(cm36686->irq, cm36686);
	gpio_free(cm36686->pdata->irq);
err_setup_irq:
	sysfs_remove_group(&cm36686->proximity_input_dev->dev.kobj,
			   &proximity_attribute_group);
err_sysfs_create_group_proximity:
	input_unregister_device(cm36686->proximity_input_dev);
err_input_register_device_proximity:
err_input_allocate_device_proximity:
err_setup_reg:
	if (cm36686->pdata->cm36686_led_on)
		cm36686->pdata->cm36686_led_on(false);

	if (cm36686->cm36686_light_vddpower)
		cm36686->cm36686_light_vddpower(false);

	if (cm36686->cm36686_proxi_vddpower)
		cm36686->cm36686_proxi_vddpower(false);

	wake_lock_destroy(&cm36686->prx_wake_lock);
	mutex_destroy(&cm36686->read_lock);
	mutex_destroy(&cm36686->power_lock);
	kfree(cm36686);
done:
	return ret;
}

static int __devinit ezx_pcap_probe(struct spi_device *spi)
{
	struct pcap_platform_data *pdata = spi->dev.platform_data;
	struct pcap_chip *pcap;
	int i, adc_irq;
	int ret = -ENODEV;

	/* platform data is required */
	if (!pdata)
		goto ret;

	pcap = kzalloc(sizeof(*pcap), GFP_KERNEL);
	if (!pcap) {
		ret = -ENOMEM;
		goto ret;
	}

	mutex_init(&pcap->io_mutex);
	mutex_init(&pcap->adc_mutex);
	INIT_WORK(&pcap->isr_work, pcap_isr_work);
	INIT_WORK(&pcap->msr_work, pcap_msr_work);
	dev_set_drvdata(&spi->dev, pcap);

	/* setup spi */
	spi->bits_per_word = 32;
	spi->mode = SPI_MODE_0 | (pdata->config & PCAP_CS_AH ? SPI_CS_HIGH : 0);
	ret = spi_setup(spi);
	if (ret)
		goto free_pcap;

	pcap->spi = spi;

	/* setup irq */
	pcap->irq_base = pdata->irq_base;
	pcap->workqueue = create_singlethread_workqueue("pcapd");
	if (!pcap->workqueue) {
		ret = -ENOMEM;
		dev_err(&spi->dev, "can't create pcap thread\n");
		goto free_pcap;
	}

	/* redirect interrupts to AP, except adcdone2 */
	if (!(pdata->config & PCAP_SECOND_PORT))
		ezx_pcap_write(pcap, PCAP_REG_INT_SEL,
					(1 << PCAP_IRQ_ADCDONE2));

	/* setup irq chip */
	for (i = pcap->irq_base; i < (pcap->irq_base + PCAP_NIRQS); i++) {
		irq_set_chip_and_handler(i, &pcap_irq_chip, handle_simple_irq);
		irq_set_chip_data(i, pcap);
#ifdef CONFIG_ARM
		set_irq_flags(i, IRQF_VALID);
#else
		irq_set_noprobe(i);
#endif
	}

	/* mask/ack all PCAP interrupts */
	ezx_pcap_write(pcap, PCAP_REG_MSR, PCAP_MASK_ALL_INTERRUPT);
	ezx_pcap_write(pcap, PCAP_REG_ISR, PCAP_CLEAR_INTERRUPT_REGISTER);
	pcap->msr = PCAP_MASK_ALL_INTERRUPT;

	irq_set_irq_type(spi->irq, IRQ_TYPE_EDGE_RISING);
	irq_set_handler_data(spi->irq, pcap);
	irq_set_chained_handler(spi->irq, pcap_irq_handler);
	irq_set_irq_wake(spi->irq, 1);

	/* ADC */
	adc_irq = pcap_to_irq(pcap, (pdata->config & PCAP_SECOND_PORT) ?
					PCAP_IRQ_ADCDONE2 : PCAP_IRQ_ADCDONE);

	ret = request_irq(adc_irq, pcap_adc_irq, 0, "ADC", pcap);
	if (ret)
		goto free_irqchip;

	/* setup subdevs */
	for (i = 0; i < pdata->num_subdevs; i++) {
		ret = pcap_add_subdev(pcap, &pdata->subdevs[i]);
		if (ret)
			goto remove_subdevs;
	}

	/* board specific quirks */
	if (pdata->init)
		pdata->init(pcap);

	return 0;

remove_subdevs:
	device_for_each_child(&spi->dev, NULL, pcap_remove_subdev);
/* free_adc: */
	free_irq(adc_irq, pcap);
free_irqchip:
	for (i = pcap->irq_base; i < (pcap->irq_base + PCAP_NIRQS); i++)
		irq_set_chip_and_handler(i, NULL, NULL);
/* destroy_workqueue: */
	destroy_workqueue(pcap->workqueue);
free_pcap:
	kfree(pcap);
ret:
//.........这里部分代码省略.........

void rds_threads_exit(void)
{
	destroy_workqueue(rds_wq);
}

static int hva_probe(struct platform_device *pdev)
{
	struct hva_dev *hva;
	struct device *dev = &pdev->dev;
	int ret;

	hva = devm_kzalloc(dev, sizeof(*hva), GFP_KERNEL);
	if (!hva) {
		ret = -ENOMEM;
		goto err;
	}

	hva->dev = dev;
	hva->pdev = pdev;
	platform_set_drvdata(pdev, hva);

	mutex_init(&hva->lock);

	/* probe hardware */
	ret = hva_hw_probe(pdev, hva);
	if (ret)
		goto err;

	/* register all available encoders */
	register_encoders(hva);

	/* register all supported formats */
	register_formats(hva);

	/* register on V4L2 */
	ret = v4l2_device_register(dev, &hva->v4l2_dev);
	if (ret) {
		dev_err(dev, "%s %s failed to register V4L2 device\n",
			HVA_PREFIX, HVA_NAME);
		goto err_hw;
	}

	hva->work_queue = create_workqueue(HVA_NAME);
	if (!hva->work_queue) {
		dev_err(dev, "%s %s failed to allocate work queue\n",
			HVA_PREFIX, HVA_NAME);
		ret = -ENOMEM;
		goto err_v4l2;
	}

	/* register device */
	ret = hva_register_device(hva);
	if (ret)
		goto err_work_queue;

	dev_info(dev, "%s %s registered as /dev/video%d\n", HVA_PREFIX,
		 HVA_NAME, hva->vdev->num);

	return 0;

err_work_queue:
	destroy_workqueue(hva->work_queue);
err_v4l2:
	v4l2_device_unregister(&hva->v4l2_dev);
err_hw:
	hva_hw_remove(hva);
err:
	return ret;
}

void diagfwd_bridge_init(void)
{
	int ret;

	pr_debug("diag: in %s\n", __func__);
	driver->diag_bridge_wq = create_singlethread_workqueue(
							"diag_bridge_wq");
	driver->read_len_mdm = 0;
	driver->write_len_mdm = 0;
	driver->num_hsic_buf_tbl_entries = 0;
	if (driver->usb_buf_mdm_out  == NULL)
		driver->usb_buf_mdm_out = kzalloc(USB_MAX_OUT_BUF,
							 GFP_KERNEL);
	if (driver->usb_buf_mdm_out == NULL)
		goto err;
	/* Only used by smux move to smux probe function */
	if (driver->write_ptr_mdm == NULL)
		driver->write_ptr_mdm = kzalloc(
		sizeof(struct diag_request), GFP_KERNEL);
	if (driver->write_ptr_mdm == NULL)
		goto err;
	if (driver->usb_read_mdm_ptr == NULL)
		driver->usb_read_mdm_ptr = kzalloc(
		sizeof(struct diag_request), GFP_KERNEL);
	if (driver->usb_read_mdm_ptr == NULL)
		goto err;

	if (driver->hsic_buf_tbl == NULL)
		driver->hsic_buf_tbl = kzalloc(NUM_HSIC_BUF_TBL_ENTRIES *
				sizeof(struct diag_write_device), GFP_KERNEL);
	if (driver->hsic_buf_tbl == NULL)
		goto err;

	driver->count_hsic_pool = 0;
	driver->count_hsic_write_pool = 0;

	driver->itemsize_hsic = READ_HSIC_BUF_SIZE;
	driver->poolsize_hsic = N_MDM_WRITE;
	driver->itemsize_hsic_write = sizeof(struct diag_request);
	driver->poolsize_hsic_write = N_MDM_WRITE;

#ifdef CONFIG_DIAG_OVER_USB
	INIT_WORK(&(driver->diag_read_mdm_work), diag_read_mdm_work_fn);
#endif
	INIT_WORK(&(driver->diag_disconnect_work), diag_disconnect_work_fn);
	INIT_WORK(&(driver->diag_usb_read_complete_work),
			diag_usb_read_complete_fn);
#ifdef CONFIG_DIAG_OVER_USB
	driver->mdm_ch = usb_diag_open(DIAG_MDM, driver,
						 diagfwd_bridge_notifier);
	if (IS_ERR(driver->mdm_ch)) {
		pr_err("diag: Unable to open USB diag MDM channel\n");
		goto err;
	}
#endif
	/* register HSIC device */
	ret = platform_driver_register(&msm_hsic_ch_driver);
	if (ret)
		pr_err("diag: could not register HSIC device, ret: %d\n", ret);
	/* register SMUX device */
	ret = platform_driver_register(&msm_diagfwd_smux_driver);
	if (ret)
		pr_err("diag: could not register SMUX device, ret: %d\n", ret);

	return;
err:
	pr_err("diag: Could not initialize for bridge forwarding\n");
	kfree(driver->usb_buf_mdm_out);
	kfree(driver->hsic_buf_tbl);
	kfree(driver->write_ptr_mdm);
	kfree(driver->usb_read_mdm_ptr);
	if (driver->diag_bridge_wq)
		destroy_workqueue(driver->diag_bridge_wq);

	return;
}

void __exit xen_pcibk_xenbus_unregister(void)
{
	destroy_workqueue(xen_pcibk_wq);
	xenbus_unregister_driver(&xen_pcibk_driver);
}

int ieee802154_register_hw(struct ieee802154_hw *hw)
{
	struct ieee802154_local *local = hw_to_local(hw);
	struct net_device *dev;
	int rc = -ENOSYS;

	local->workqueue =
		create_singlethread_workqueue(wpan_phy_name(local->phy));
	if (!local->workqueue) {
		rc = -ENOMEM;
		goto out;
	}

	hrtimer_init(&local->ifs_timer, CLOCK_MONOTONIC, HRTIMER_MODE_REL);
	local->ifs_timer.function = ieee802154_xmit_ifs_timer;

	wpan_phy_set_dev(local->phy, local->hw.parent);

	ieee802154_setup_wpan_phy_pib(local->phy);

	if (!(hw->flags & IEEE802154_HW_CSMA_PARAMS)) {
		local->phy->supported.min_csma_backoffs = 4;
		local->phy->supported.max_csma_backoffs = 4;
		local->phy->supported.min_maxbe = 5;
		local->phy->supported.max_maxbe = 5;
		local->phy->supported.min_minbe = 3;
		local->phy->supported.max_minbe = 3;
	}

	if (!(hw->flags & IEEE802154_HW_FRAME_RETRIES)) {
		local->phy->supported.min_frame_retries = 3;
		local->phy->supported.max_frame_retries = 3;
	}

	if (hw->flags & IEEE802154_HW_PROMISCUOUS)
		local->phy->supported.iftypes |= BIT(NL802154_IFTYPE_MONITOR);

	rc = wpan_phy_register(local->phy);
	if (rc < 0)
		goto out_wq;

	rtnl_lock();

	dev = ieee802154_if_add(local, "wpan%d", NET_NAME_ENUM,
				NL802154_IFTYPE_NODE,
				cpu_to_le64(0x0000000000000000ULL));
	if (IS_ERR(dev)) {
		rtnl_unlock();
		rc = PTR_ERR(dev);
		goto out_phy;
	}

	rtnl_unlock();

	return 0;

out_phy:
	wpan_phy_unregister(local->phy);
out_wq:
	destroy_workqueue(local->workqueue);
out:
	return rc;
}

//.........这里部分代码省略.........
		err = PTR_ERR(mr);
		pr_err("Failed to get dma mr, err: %d\n", err);
		goto fail_mr;
	}

	cqe_num = min(isert_dev->device_attr.max_cqe, ISER_CQ_ENTRIES);
	cqe_num = cqe_num / isert_dev->num_cqs;

#ifdef CONFIG_SCST_EXTRACHECKS
	if (isert_dev->device_attr.max_cqe == 0)
		pr_err("Zero max_cqe encountered: you may have a compilation problem\n");
#endif

	for (i = 0; i < isert_dev->num_cqs; ++i) {
		struct isert_cq *cq_desc = &isert_dev->cq_desc[i];

		cq_desc->dev = isert_dev;
		cq_desc->idx = i;
#if LINUX_VERSION_CODE < KERNEL_VERSION(2, 6, 20)
		INIT_WORK(&cq_desc->cq_comp_work, isert_cq_comp_work_cb, NULL);
#else
		INIT_WORK(&cq_desc->cq_comp_work, isert_cq_comp_work_cb);
#endif

		snprintf(wq_name, sizeof(wq_name), "isert_cq_%p", cq_desc);
#if LINUX_VERSION_CODE < KERNEL_VERSION(2, 6, 36)
		cq_desc->cq_workqueue = create_singlethread_workqueue(wq_name);
#else
#if LINUX_VERSION_CODE == KERNEL_VERSION(2, 6, 36)
		cq_desc->cq_workqueue = alloc_workqueue(wq_name,
							WQ_CPU_INTENSIVE|
							WQ_RESCUER, 1);
#else
		cq_desc->cq_workqueue = alloc_workqueue(wq_name,
							WQ_CPU_INTENSIVE|
							WQ_MEM_RECLAIM, 1);
#endif
#endif
		if (unlikely(!cq_desc->cq_workqueue)) {
			pr_err("Failed to alloc iser cq work queue for dev:%s\n",
			       ib_dev->name);
			err = -ENOMEM;
			goto fail_cq;
		}

		cq = ib_create_cq(ib_dev,
				  isert_cq_comp_handler,
				  isert_async_evt_handler,
				  cq_desc, /* context */
				  cqe_num,
				  i); /* completion vector */
		if (unlikely(IS_ERR(cq))) {
			cq_desc->cq = NULL;
			err = PTR_ERR(cq);
			pr_err("Failed to create iser dev cq, err:%d\n", err);
			goto fail_cq;
		}

		cq_desc->cq = cq;
		err = ib_req_notify_cq(cq, IB_CQ_NEXT_COMP | IB_CQ_REPORT_MISSED_EVENTS);
		if (unlikely(err)) {
			pr_err("Failed to request notify cq, err: %d\n", err);
			goto fail_cq;
		}
	}

	isert_dev->ib_dev = ib_dev;
	isert_dev->pd = pd;
	isert_dev->mr = mr;

	INIT_LIST_HEAD(&isert_dev->conn_list);

	lockdep_assert_held(&dev_list_mutex);

	isert_dev_list_add(isert_dev);

	pr_info("iser created device:%p\n", isert_dev);
	return isert_dev;

fail_cq:
	for (j = 0; j <= i; ++j) {
		if (isert_dev->cq_desc[j].cq)
			ib_destroy_cq(isert_dev->cq_desc[j].cq);
		if (isert_dev->cq_desc[j].cq_workqueue)
			destroy_workqueue(isert_dev->cq_desc[j].cq_workqueue);
	}
	ib_dereg_mr(mr);
fail_mr:
	ib_dealloc_pd(pd);
fail_pd:
	vfree(isert_dev->cq_desc);
fail_alloc_cq_desc:
	kfree(isert_dev->cq_qps);
fail_cq_qps:
fail_query:
	kfree(isert_dev);
out:
	TRACE_EXIT_RES(err);
	return ERR_PTR(err);
}

void i915_gem_cleanup_userptr(struct drm_i915_private *dev_priv)
{
	destroy_workqueue(dev_priv->mm.userptr_wq);
}

static int cm36686_i2c_remove(struct i2c_client *client)
{
	struct cm36686_data *cm36686 = i2c_get_clientdata(client);

	/* free irq */
	if (cm36686->power_state & PROXIMITY_ENABLED) {
		disable_irq_wake(cm36686->irq);
		disable_irq(cm36686->irq);
	}
	free_irq(cm36686->irq, cm36686);
	gpio_free(cm36686->pdata->irq);

	/* device off */
	if (cm36686->power_state & LIGHT_ENABLED)
		cm36686_light_disable(cm36686);
	if (cm36686->power_state & PROXIMITY_ENABLED) {
		cm36686_i2c_write_word(cm36686, REG_PS_CONF1,
					   0x0001);
		if (cm36686->pdata->cm36686_led_on)
			cm36686->pdata->cm36686_led_on(false);

		if (cm36686->cm36686_light_vddpower)
			cm36686->cm36686_light_vddpower(false);

		if (cm36686->cm36686_proxi_vddpower)
			cm36686->cm36686_proxi_vddpower(false);
	}

	/* destroy workqueue */
	destroy_workqueue(cm36686->light_wq);
	destroy_workqueue(cm36686->prox_wq);

	/* sysfs destroy */
	device_remove_file(cm36686->light_dev, &dev_attr_name);
	device_remove_file(cm36686->light_dev, &dev_attr_vendor);
	device_remove_file(cm36686->light_dev, &dev_attr_raw_data);
	device_remove_file(cm36686->light_dev, &dev_attr_lux);
	sensors_classdev_unregister(cm36686->light_dev);

	device_remove_file(cm36686->proximity_dev, &dev_attr_name);
	device_remove_file(cm36686->proximity_dev, &dev_attr_vendor);
	device_remove_file(cm36686->proximity_dev, &dev_attr_thresh_high);
	device_remove_file(cm36686->proximity_dev, &dev_attr_thresh_low);

	device_remove_file(cm36686->proximity_dev, &dev_attr_prox_avg);
#ifdef CM36686_CANCELATION
	device_remove_file(cm36686->proximity_dev, &dev_attr_prox_cal);
	device_remove_file(cm36686->proximity_dev, &dev_attr_prox_offset_pass);
#endif
	device_remove_file(cm36686->proximity_dev, &attr_prox_raw);
	device_remove_file(cm36686->proximity_dev, &dev_attr_state);
	sensors_classdev_unregister(cm36686->proximity_dev);

	/* input device destroy */
	sysfs_remove_group(&cm36686->light_input_dev->dev.kobj,
				&light_attribute_group);
	input_unregister_device(cm36686->light_input_dev);
	sysfs_remove_group(&cm36686->proximity_input_dev->dev.kobj,
				&proximity_attribute_group);
	input_unregister_device(cm36686->proximity_input_dev);

	/* lock destroy */
	mutex_destroy(&cm36686->read_lock);
	mutex_destroy(&cm36686->power_lock);
	wake_lock_destroy(&cm36686->prx_wake_lock);

	kfree(cm36686);

	return 0;
}

void adf_exit_aer(void)
{
	if (device_reset_wq)
		destroy_workqueue(device_reset_wq);
	device_reset_wq = NULL;
}

//.........这里部分代码省略.........
    hi->sdev.print_name = lge_hsd_print_name;

    ret = switch_dev_register(&hi->sdev);
    if (ret < 0) {
        HSD_ERR("Failed to register switch device\n");
        goto err_switch_dev_register;
    }

    hs_detect_work_queue = create_workqueue("hs_detect");
    if (hs_detect_work_queue == NULL) {
        HSD_ERR("Failed to create workqueue\n");
        goto err_create_work_queue;
    }

    ret = gpio_request(hi->gpio, pdev->name);
    if (ret < 0) {
        HSD_ERR("Failed to request gpio%d\n", hi->gpio);
        goto err_request_detect_gpio;
    }

    ret = gpio_direction_input(hi->gpio);
    if (ret < 0) {
        HSD_ERR("Failed to set gpio%d as input\n", hi->gpio);
        goto err_set_detect_gpio;
    }

    if (hi->gpio == LGE_HEADSET_DETECT_GPIO) {
        ret = gpio_tlmm_config(GPIO_CFG(hi->gpio, 0, GPIO_CFG_INPUT, GPIO_CFG_NO_PULL,
                                        GPIO_CFG_2MA), GPIO_CFG_ENABLE);
        if (ret < 0) {
            HSD_ERR("Failed to configure gpio%d tlmm\n", hi->gpio);
            goto err_set_detect_gpio;
        }
    }

    hi->irq = gpio_to_irq(pdata->gpio);
    if (hi->irq < 0) {
        HSD_ERR("Failed to get interrupt number\n");
        ret = hi->irq;
        goto err_get_irq_num_failed;
    }

    ret = request_irq(hi->irq, gpio_irq_handler,
                      IRQF_TRIGGER_RISING|IRQF_TRIGGER_FALLING, pdev->name, NULL);

    if (ret < 0) {
        HSD_ERR("Failed to request interrupt handler\n");
        goto err_request_detect_irq;
    }

    ret = irq_set_irq_wake(hi->irq, 1);
    if (ret < 0) {
        HSD_ERR("Failed to set interrupt wake\n");
        goto err_request_input_dev;
    }

    hi->input = input_allocate_device();
    if (!hi->input) {
        HSD_ERR("Failed to allocate input device\n");
        ret = -ENOMEM;
        goto err_request_input_dev;
    }

    if (pdev->dev.platform_data)
        hi->input->name = "7k_headset";
    else
        hi->input->name = "hsd_headset";

    hi->input->id.vendor	= 0x0001;
    hi->input->id.product	= 1;
    hi->input->id.version	= 1;

    input_set_capability(hi->input, EV_SW, SW_HEADPHONE_INSERT);

    ret = input_register_device(hi->input);
    if (ret) {
        HSD_ERR("Failed to register input device\n");
        goto err_register_input_dev;
    }

    /* Perform initial detection */
    return 0;

err_register_input_dev:
    input_free_device(hi->input);
err_request_input_dev:
    free_irq(hi->irq, 0);
err_request_detect_irq:
err_get_irq_num_failed:
err_set_detect_gpio:
    gpio_free(hi->gpio);
err_request_detect_gpio:
    destroy_workqueue(hs_detect_work_queue);
err_create_work_queue:
    switch_dev_unregister(&hi->sdev);
err_switch_dev_register:
    HSD_ERR("Failed to register driver\n");

    return ret;
}

static void __exit test_exit(void)
{
  destroy_workqueue(queue);
}

static void __exit appledisplay_exit(void)
{
	flush_workqueue(wq);
	destroy_workqueue(wq);
	usb_deregister(&appledisplay_driver);
}

//.........这里部分代码省略.........
	driver->hcd_priv_size = sizeof(struct xhci_hcd *);

	xhci->shared_hcd = usb_create_shared_hcd(driver, &pdev->dev,
			dev_name(&pdev->dev), hcd);
	if (!xhci->shared_hcd) {
		ret = -ENOMEM;
		goto remove_usb2_hcd;
	}

	hcd_to_bus(xhci->shared_hcd)->skip_resume = true;
	/*
	 * Set the xHCI pointer before xhci_plat_setup() (aka hcd_driver.reset)
	 * is called by usb_add_hcd().
	 */
	*((struct xhci_hcd **) xhci->shared_hcd->hcd_priv) = xhci;

	ret = usb_add_hcd(xhci->shared_hcd, irq, IRQF_SHARED);
	if (ret)
		goto put_usb3_hcd;

	spin_lock_init(&mxhci->wakeup_lock);

	mxhci->pwr_event_irq = platform_get_irq_byname(pdev, "pwr_event_irq");
	if (mxhci->pwr_event_irq < 0) {
		dev_err(&pdev->dev,
				"platform_get_irq for pwr_event_irq failed\n");
		goto remove_usb3_hcd;
	}

	ret = devm_request_irq(&pdev->dev, mxhci->pwr_event_irq,
				mxhci_hsic_pwr_event_irq,
				0, "mxhci_hsic_pwr_evt", mxhci);
	if (ret) {
		dev_err(&pdev->dev, "request irq failed (pwr event irq)\n");
		goto remove_usb3_hcd;
	}

	init_completion(&mxhci->phy_in_lpm);

	mxhci->wq = create_singlethread_workqueue("mxhci_wq");
	if (!mxhci->wq) {
		dev_err(&pdev->dev, "unable to create workqueue\n");
		ret = -ENOMEM;
		goto remove_usb3_hcd;
	}

	INIT_WORK(&mxhci->bus_vote_w, mxhci_hsic_bus_vote_w);

	mxhci->bus_scale_table = msm_bus_cl_get_pdata(pdev);
	if (!mxhci->bus_scale_table) {
		dev_dbg(&pdev->dev, "bus scaling is disabled\n");
	} else {
		mxhci->bus_perf_client =
			msm_bus_scale_register_client(mxhci->bus_scale_table);
		/* Configure BUS performance parameters for MAX bandwidth */
		if (mxhci->bus_perf_client) {
			mxhci->bus_vote = true;
			queue_work(mxhci->wq, &mxhci->bus_vote_w);
		} else {
			dev_err(&pdev->dev, "%s: bus scaling client reg err\n",
					__func__);
			ret = -ENODEV;
			goto delete_wq;
		}
	}

	ret = device_create_file(&pdev->dev, &dev_attr_config_imod);
	if (ret)
		dev_dbg(&pdev->dev, "%s: unable to create imod sysfs entry\n",
					__func__);

	/* Enable HSIC PHY */
	mxhci_hsic_ulpi_write(mxhci, 0x01, MSM_HSIC_CFG_SET);

	device_init_wakeup(&pdev->dev, 1);
	wakeup_source_init(&mxhci->ws, dev_name(&pdev->dev));
	pm_stay_awake(mxhci->dev);

	pm_runtime_set_active(&pdev->dev);
	pm_runtime_enable(&pdev->dev);

	return 0;

delete_wq:
	destroy_workqueue(mxhci->wq);
remove_usb3_hcd:
	usb_remove_hcd(xhci->shared_hcd);
put_usb3_hcd:
	usb_put_hcd(xhci->shared_hcd);
remove_usb2_hcd:
	usb_remove_hcd(hcd);
deinit_vddcx:
	mxhci_hsic_init_vddcx(mxhci, 0);
deinit_clocks:
	mxhci_hsic_init_clocks(mxhci, 0);
put_hcd:
	usb_put_hcd(hcd);

	return ret;
}