struct extcon_dev

该结构体是 Linux 内核中用于表示 USB 外部控制器设备的数据结构。它包含了设备的基本信息、设备的 I/O 请求队列、设备的状态等信息。

以下是该结构体的定义：

struct extcon_dev {
    struct device dev;
    struct list_head list;
    struct extcon_devinfo *edev_info;
    struct extcon_dev_notifier *notifier;
    struct mutex lock;
    spinlock_t wq_lock;
    wait_queue_head_t wq;
    unsigned long state;
    struct list_head events;
    struct notifier_block nb;
    struct kobject *kobj;
    struct attribute_group **attr_groups;
    struct work_struct work;
    struct workqueue_struct *wq_io;
    struct extcon_devmon *monitor;
    int (*extcon_set_state)(struct extcon_dev *edev, unsigned int id, bool state);
    int (*extcon_get_state)(struct extcon_dev *edev, unsigned int id);
    void *driver_data;
};