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Linux设备驱动模型-Driver

error = 0; bus = bus_get(drv->bus); if (! 初始化和添加一个kobject if (error) goto out_unregister; klist_add_tail(&priv->knode_bus, &bus->p->klist_drivers ); 添加驱动到klist_driver链表中 if (drv->bus->p->drivers_autoprobe) { 驱动所属的bus是否支持自动probe error = driver_attach %s: uevent attr (%s) failedn, __func__, drv->name); } error = driver_add_groups(drv, bus->drv_groups ); 创建bus下的驱动属性 if (error) { * How the hell do we get out of this pickle?

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Linux设备驱动模型-Device

int bus_add_device(struct device *dev){ struct bus_type *bus = bus_get(dev->bus); int error = 0; if ( bus) { pr_debug(bus: %s: add device %sn, bus->name, dev_name(dev)); error = device_add_attrs(bus, dev ); if (error) goto out_put; error = device_add_groups(dev, bus->dev_groups); if (error) goto out_groups ; error = sysfs_create_link(&bus->p->devices_kset->kobj, &dev->kobj, dev_name(dev)); if (error) goto out_id; error = sysfs_create_link(&dev->kobj, &dev->bus->p->subsys.kobj, subsystem); if (error) goto

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    Vue.js与Node.js一起打造一款属于自己的音乐App(收藏)

    console.log(error) }) .catch(error => { error alert(失败) console.log(error) }) 歌曲评论 this. console.log(error) }) .catch(error => { error alert(失败) console.log(error) }) 歌词 this. $on(seeked1, (data) => { this.seeked(data) }) Bus.$on(pause11, () => { this.pause1() }) Bus. $on(play11, () => { this.play1() }) Bus.$on(prep1, () => { this.prep() }) Bus. $off(timeupdate1) Bus.$off(seeked1) Bus.$off(pause11) Bus.$off(play11) Bus.$off(next1) Bus.

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    Linux电源管理-SuspendResume流程

    执行顺序是pm_domain-type-class-bus-driver,如果失败设置failed_prepare的引用计数值。2. dev->bus->name : No Bus, dev_name(dev)); mutex_lock(&dpm_list_mtx); if (dev->parent && dev->parent->power.is_prepared && dev->bus->pm) { info = preparing bus ; callback = dev->bus->pm->prepare; } if (! dev->bus->pm) { info = bus ; callback = pm_op(dev->bus->pm, state); } else if (dev->bus->suspend) { pm_dev_dbg (dev, state, legacy bus ); error = legacy_suspend(dev, state, dev->bus->suspend, legacy bus ); goto End

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    CentOS8中如何支持TL-WDN7200H无线USB网卡?

    001 Device 004: ID 27c6:55a4 Bus 001 Device 003: ID 18f8:1286 Bus 001 Device 002: ID 2357:0106 TP-Link Bus 001 Device 006: ID 8087:0aaa Intel Corp. Bus 001 Device 001: ID 1d6b:0002 Linux Foundation 2.0 root hub看到Bus 001 Device 002: ID 2357:0106 TP-Link 1make: *** Error 2make: Leaving directory usrsrckernels4.18.0-147.6.el8.x86_64make: ***  Error 2打开rtl8814au 1make: *** Error 2make: Leaving directory usrsrckernels4.18.0-147.6.el8.x86_64make: ***  Error 2打开rtl8814au

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    I2C总线架构 之 I2C核心

    error) error = fn(drv, data);} fn指向的参数为__process_new_adapterstatic int __process_new_adapter(struct device_driver ->p->klist_drivers); error = driver_attach(drv); * 在 sys 添加节点 * error = driver_create_file(drv, &driver_attr_uevent ); error = driver_add_groups(drv, bus->drv_groups);} int driver_attach(struct device_driver *drv){ return error) error = fn(dev, data);} fn指向__driver_attachstatic int __driver_attach(struct device *dev, void error) error = fn(dev, data);} fn指向__process_new_driverstatic int __process_new_driver(struct device

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    spring使用Email邮件系统

    file); 添加附件 * mailSender.send(mimeMessage); 发送邮件 } catch (Exception e) { logger.error(the email send error {}, e); } } }3. email.properties配置文件1 bus-web.subject=1232 bus-web.content=1233 bus-web.from=vipgxjun @163.com4 bus-web.to=8888888@qq.com5 bus-web.host=smtp.163.com6 bus-web.port=257 bus-web.username=xijun.gong8 bus-web.password=*******4.运行即可?

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    PCIE AER

    Error information being logged includes storing the error reporting agents requestor ID into the Error KernelThe PCI Express AER Root driver is a Root Port service driver attached to the PCI Express Port Bus AER error outputWhen a PCIe AER error is captured, an error message will be output to console. :0000:50:00.0: PCIe Bus Error: severity=Uncorrected (Fatal), type=Transaction Layer, id=0500(Requester are also exposed in the form of sysfs attributes which are documented at DocumentationABItestingsysfs-bus-pci-devices-aer_statsDocumentationABItestingsysfs-bus-pci-devices-aer_stats

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    【译】Android技术栈,1#架构

    void showMovies (List movieList); void showLoading (); void hideLoading (); void showError (String error hideLoading() { loadingProgressBar.setVisibility(View.GONE); } @Override public void showError(String error ) { errorTextView.setVisibility(View.VISIBLE); errorTextView.setText(error); } @Override public void final Bus UI_BUS = new Bus(); private BusProvider() {}; public static Bus getRestBusInstance() { return 因为所有的模块都需要访问它,从而与Bus进行交互。

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    Go 每日一库之 message-bus

    模块 A 和 模块 B 先向message-bus订阅主题(topic),即告诉message-bus对什么样的消息感兴趣。 其他模块 C 产生某个主题的消息,通知message-bus,由message-bus分发到对此感兴趣的模块。这样就实现了模块之间的解耦,模块 A、B 和 C 之间不需要知道彼此。 改动在这里:https:github.comdarjunmessage-bus,message-bus有测试和性能用例,改完跑一下?。 Publish(topic string, args ...interface{}) Close(topic string) Subscribe(topic string, fn interface{}) error Unsubscribe(topic string, fn interface{}) error} Publish和Subscribe都讲过了,Unsubscribe表示对某个主题不感兴趣了,取消订阅,

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    数据挖掘工程师:如何通过百度地图API抓取建筑物周边位置、房价信息

    ) { 如果查到坐标,开始检索周围信息 SearchStart(repoint, house_data) } else { setTimeout(function () { console.log(Error 如果还没查到坐标,继续查询下一个房屋,延迟timeInterval秒 GetDataFromServer(); }, timeInterval); } }, 北京市); } }, 北京市); }, error : function () { alert(error) }, timeout: function () { alert(time out) } }); } 2.SearchStart和SearchNearby : function () { alert(error in post); return false; }, timeout: function () { alert(time out in post) , BusesHouses, bus) if params == bus insert(house, params, Hospital, HospitalsHouses, hospital) if params

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    聊聊go.cqrs的Dispatcher

    序本文主要研究一下go.cqrs的DispatcherDispatchertype Dispatcher interface { Dispatch(CommandMessage) error RegisterHandler (CommandHandler, ...interface{}) error} Dispatcher接口定义了Dispatch、RegisterHandler方法InMemoryDispatchertype on to all registered command handlers.func (b *InMemoryDispatcher) Dispatch(command CommandMessage) error { if handler, ok := b.handlers; ok { return handler.Handle(command) } return fmt.Errorf(The command bus if _, ok := b.handlers; ok { return fmt.Errorf(Duplicate command handler registration with command bus

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    聊聊go.cqrs的Dispatcher

    Dispatcher OIP - 2021-04-09T224218.390.jpeg Dispatchertype Dispatcher interface { Dispatch(CommandMessage) error on to all registered command handlers.func (b *InMemoryDispatcher) Dispatch(command CommandMessage) error { if handler, ok := b.handlers; ok { return handler.Handle(command) } return fmt.Errorf(The command bus parameter.func (b *InMemoryDispatcher) RegisterHandler(handler CommandHandler, commands ...interface{}) error if _, ok := b.handlers; ok { return fmt.Errorf(Duplicate command handler registration with command bus

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    在macOS10.12系统上给thea

    lgpuarrayUsersflybywind.theanocompiledir_Darwin-16.0.0-x86_64-i386-64bit-i386-3.5.2-64tmppv5z0wy8mod.cpp:4:10: fatal error 然后再运行,又挂了,这次提示:ld: library not found for -lgpuarrayclang: error: linker command failed with exit code You can experiement with the values, unavaiable ones will just raise an error, and there are no gaps PCI Bus ID: (unsupported for device opencl0:1)什么意思? 如果是cuda,最新的gpuarray是可以显示PCI总线id的: Mapped name None to device cuda: GeForce 840M; PCI Bus ID: 0000:0A:

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    6. mmc core(第六章)——mmc core主模块

    * ret = mmc_register_bus(); 调用mmc_register_bus注册mmc bus,具体参考《mmc core——bus模块说明》 会生成sysbusmmc目录 * 注册 ,所以这里先put一次 host bus的计数(bus_refs)为0的时候,会调用__mmc_release_bus清空host bus的信息 mmc_bus_get(host); 再获取host 3、mmc_rescan_try_freq以一定频率搜索host bus上的card。 cmd->error || ! cmd->error || !

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    【Microsoft Azure学习之旅】测试消息队列(Service Bus Queue)是否会丢消息

    组里最近遇到一个问题,微软的Azure Service Bus Queue是否可靠?是否会出现丢失消息的情况?   具体缘由如下,  由于开发的产品是SaaS产品,为防止消息丢失,跨Module消息传递使用的是微软Azure消息队列(Service Bus Queue),但是出现一个问题,一个Module向Queue 所以大家怀疑,是否Azure Service Bus Queue不可靠,丢失了我们的一些消息?  官方的说法是,99.5%的概率消息不会丢失。   所以索性根据同事的建议,写一个测试程序来确定Service Bus Queue是否会或者容易丢失消息。一. 测试程序简介 原理:向消息队列(Queue)中发送一定量的消息,看能否全部取到。 e.Message)); return bRet; } catch (UnauthorizedAccessException e) { Thrown if there is an IO or security error

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    spring cloud 学习(8) - sleuth & zipkin 调用链跟踪

    org.springframework.cloud:spring-cloud-sleuth-stream  注:为了实现tracing数据埋点与采集的解耦,spring cloud引入了message bus (消息总线)的概念,微服务无需关心tracing系统在哪,长什么样,只要向bus总线上扔消息就行,所以引入了bus-kafka以及sleuth-stream。 1.2 application.yml配置spring: ... cloud: bus: enabled: true stream: default-binder: kafka kafka: binder username: root password: *** driver-class-name: com.mysql.cj.jdbc.Driver initialize: true continue-on-error : true sleuth: enabled: false cloud: bus: enabled: true ... stream: default-binder: kafka kafka: binder

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    hostbyte=DID_XXX driverbyte=DRIVER_XXXX 错误查询

    Result: hostbyte=DID_ERROR driverbyte=DRIVER_OKDec 6 18:12:13 localhost kernel: blk_update_request: IO error & 0xff)hostbytehostbyte符号(Symbol)含义0x00DID_OK没有错误0x01DID_NO_CONNECT在超时之前,不能连接0x02DID_BUS_BUSY在超时期间,BUS *#define DID_NO_CONNECT 0x01 * Couldnt connect before timeout period *#define DID_BUS_BUSY 0x02 * BUS *#define DID_ABORT 0x05 * Told to abort for some other reason *#define DID_PARITY 0x06 * Parity error *#define DID_ERROR 0x07 * Internal error *#define DID_RESET 0x08 * Reset by somebody.

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    Linux 查看网卡UUID

    image.png4、查看网卡UUID# nmcli contips:如果有发现有报错# Error: could not connect to D-Bus.tips:查看varlogmessages日志 etcNetworkManagerNetworkManager.confApr 20 14:53:05 localhost NetworkManager: nm_dbus_manager_init_bus(): Could not get the system bus Make sure the message bus daemon is running!

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    Maven部署构件至远程仓库

    . ------------------------------------------------------------------------ Building bus-location 1.0 -------------------------------------------- --- maven-clean-plugin:2.4.1:clean (default-clean) @ bus-location --- Deleting G:bus-locationtarget --- maven-resources-plugin:2.5:resources (default-resources) @ bus-location :bus-locationtargetclasses --- maven-resources-plugin:2.5:testResources (default-testResources) @ bus-location 注:此处我遇到一个错误,就是nexus一直启动不了,wrapper.log报错:Error in WrapperListener.start callback. java.lang.StackOverflowError

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