I couldn't find any users, so removing it..
Signed-off-by: Daniel Walker <dwalker@mvista.com>
Cc: Karsten Keil <kkeil@suse.de>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
                info->owner = THIS_MODULE;
 #endif
                spin_lock_init(&info->readlock);
-               init_MUTEX(&info->write_sem);
                sprintf(info->last_cause, "0000");
                sprintf(info->last_num, "none");
                info->last_dir = 0;
 
   struct ktermios      normal_termios;  /* For saving termios structs     */
   struct ktermios      callout_termios;
   wait_queue_head_t    open_wait, close_wait;
-  struct semaphore      write_sem;
   spinlock_t           readlock;
 } modem_info;