Linux字符结构的相关内容

文章 2022-02-17 来自：开发者社区

【Linux设备驱动】--0x03字符设备模块-完整的错误处理+全局数据结构放在同一结构体内

项目中经常会将所用到的所有全局数据结构放到同一个结构体内 struct simple_dev { dev_t dev_no; struct cdev cdev; struct class *class; struct device *device; }; 该结构体将所用到的全局数据结构放在一起，这样可以在open的时候，将该指针放到file->pri...

文章 2022-02-15 来自：开发者社区

linux驱动开发--字符设备：通过cdd_cdev结构中的led变量区分是哪个节点，private_data使用

private_data改进为设备驱动支持多个设备个体做准备，针对private_data进行改进在设备打开操作中通过inode中保存的i_cdev获取代表当前设备的cdev对象通过代表当前设备的cdev对象得到包含该对象的设备私有数据结构体将设备私有数据结构体指针保存到struct file的private_data成员中在其它设备操作中直接使用保存在struct file的priva....

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更新时间 2024-06-06 14:55:52

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