Error

ajit@ajit-Dell-System-XPS-15Z:~/Downloads/xr21v141x-lnx-3.5-pak$ make
make -C /lib/modules/3.11.0-20-generic/build M=/home/ajit/Downloads/xr21v141x-lnx-3.5-pak
make[1]: Entering directory `/usr/src/linux-headers-3.11.0-20-generic'
  CC [M]  /home/ajit/Downloads/xr21v141x-lnx-3.5-pak/vizzini.o
/home/ajit/Downloads/xr21v141x-lnx-3.5-pak/vizzini.c: In function ‘xr21v141x_process_read_urb’:
/home/ajit/Downloads/xr21v141x-lnx-3.5-pak/vizzini.c:363:2: warning: passing argument 1 of ‘tty_insert_flip_string’ from incompatible pointer type [enabled by default]
  tty_insert_flip_string(tty, urb->transfer_buffer, urb->actual_length);
  ^
In file included from /home/ajit/Downloads/xr21v141x-lnx-3.5-pak/vizzini.c:39:0:
include/linux/tty_flip.h:28:19: note: expected ‘struct tty_port *’ but argument is of type ‘struct tty_struct *’
 static inline int tty_insert_flip_string(struct tty_port *port,
                   ^
/home/ajit/Downloads/xr21v141x-lnx-3.5-pak/vizzini.c:364:2: warning: passing argument 1 of ‘tty_flip_buffer_push’ from incompatible pointer type [enabled by default]
  tty_flip_buffer_push(tty);
  ^
In file included from /home/ajit/Downloads/xr21v141x-lnx-3.5-pak/vizzini.c:39:0:
include/linux/tty_flip.h:13:13: note: expected ‘struct tty_port *’ but argument is of type ‘struct tty_struct *’
 extern void tty_flip_buffer_push(struct tty_port *port);
             ^
/home/ajit/Downloads/xr21v141x-lnx-3.5-pak/vizzini.c: In function ‘xr21v141x_tty_set_termios’:
/home/ajit/Downloads/xr21v141x-lnx-3.5-pak/vizzini.c:1104:22: error: invalid type argument of ‘->’ (have ‘struct ktermios’)
  cflag = tty->termios->c_cflag;
                      ^
make[2]: *** [/home/ajit/Downloads/xr21v141x-lnx-3.5-pak/vizzini.o] Error 1
make[1]: *** [_module_/home/ajit/Downloads/xr21v141x-lnx-3.5-pak] Error 2
make[1]: Leaving directory `/usr/src/linux-headers-3.11.0-20-generic'
make: *** [all] Error 2
ajit@ajit-Dell-System-XPS-15Z:~/Downloads/xr21v141x-lnx-3.5-pak$