[build error] istallion build failure

[Wang Chen <wangchen@cn.fujitsu.com>]

Alan, commit "istallion: use tty_port"(b02f5ad6a3ff5a1ee2a7b8ec6eee338de553b060)
is guilty.

drivers/char/istallion.c: In function ‘stli_open’:
drivers/char/istallion.c:829: error: ‘struct stliport’ has no member named ‘refcount’
drivers/char/istallion.c: In function ‘stli_close’:
drivers/char/istallion.c:891: error: ‘struct stliport’ has no member named ‘refcount’
drivers/char/istallion.c:892: error: ‘struct stliport’ has no member named ‘refcount’
drivers/char/istallion.c:893: error: ‘struct stliport’ has no member named ‘refcount’
drivers/char/istallion.c:928: error: ‘struct tty_ldisc’ has no member named ‘flush_buffer’
drivers/char/istallion.c:929: error: ‘struct tty_ldisc’ has no member named ‘flush_buffer’
drivers/char/istallion.c: In function ‘stli_waitcarrier’:
drivers/char/istallion.c:1205: error: ‘struct stliport’ has no member named ‘refcount’
drivers/char/istallion.c:1234: error: ‘struct stliport’ has no member named ‘refcount’
drivers/char/istallion.c: In function ‘stli_ioctl’:
drivers/char/istallion.c:1663: warning: unused variable ‘ival’
drivers/char/istallion.c: In function ‘stli_hangup’:
drivers/char/istallion.c:1860: error: ‘struct stliport’ has no member named ‘refcount’
drivers/char/istallion.c: In function ‘stli_portcmdstats’:
drivers/char/istallion.c:4249: error: ‘struct tty_port’ has no member named ‘flag’
drivers/char/istallion.c: At top level:
drivers/char/istallion.c:4500: warning: initialization from incompatible pointer type
make[2]: *** [drivers/char/istallion.o] Error 1
make[1]: *** [drivers/char] Error 2
make: *** [drivers] Error 2