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Ô­ÎÄ£ºlinux/Documentation/driver-model/device.txt
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struct device {
        struct list_head g_list;
        struct list_head node;
        struct list_head bus_list;
        struct list_head driver_list;
        struct list_head intf_list;
        struct list_head children;
        struct device   * parent;
        char    name[DEVICE_NAME_SIZE];
        char    bus_id[BUS_ID_SIZE];
        spinlock_t      lock;
        atomic_t        refcount;
        struct bus_type * bus;
        struct driver_dir_entry dir;
    u32        class_num;
        struct device_driver *driver;
        void            *driver_data;
        void            *platform_data;
        u32             current_state;
        unsigned char *saved_state;
        void    (*release)(struct device * dev);
};
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