struct uart_driver {
    struct module     *owner;           /* 擁有該uart_driver的模組,一般為THIS_MODULE */
    const char        *driver_name;     /* 串列埠驅動名，串列埠裝置檔名以驅動名為基礎 */
    const char        *dev_name;        /* 串列埠裝置名 */
    int                major;           /* 主裝置號 */
    int                minor;           /* 次裝置號 */
 

    int                nr;              /* 該uart_driver支援的串列埠個數(最大) */
    struct console    *cons;            /* 其對應的console.若該uart_driver支援serial console,否則為NULL */

    /*
     * these are private; the low level driver should not
     * touch these; they should be initialised to NULL
     */
    struct
 
 uart_state *state;
    struct tty_driver *tty_driver;
};