Signed-off-by: Alan Cox <alan@redhat.com>
Cc: Antonino Daplas <adaplas@pol.net>
Cc: Stephen Rothwell <sfr@canb.auug.org.au>
Cc: Kelly Daly <kelly@au.ibm.com>
Cc: Paul Mackerras <paulus@samba.org>
Cc: Jiri Slaby <jirislaby@gmail.com>
Cc: Samuel Thibault <samuel.thibault@ens-lyon.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
 /*
  * TTY put_char method
  */
-static void viotty_put_char(struct tty_struct *tty, unsigned char ch)
+static int viotty_put_char(struct tty_struct *tty, unsigned char ch)
 {
        struct port_info *pi;
 
        pi = get_port_data(tty);
        if (pi == NULL)
-               return;
+               return 0;
 
        /* This will append '\r' as well if the char is '\n' */
        if (viochar_is_console(pi))
 
        if (viopath_isactive(pi->lp))
                internal_write(pi, &ch, 1);
+       return 1;
 }
 
 /*
 
        return retval;
 }
 
-static void con_put_char(struct tty_struct *tty, unsigned char ch)
+static int con_put_char(struct tty_struct *tty, unsigned char ch)
 {
        if (in_interrupt())
-               return; /* n_r3964 calls put_char() from interrupt context */
-       do_con_write(tty, &ch, 1);
+               return 0;       /* n_r3964 calls put_char() from interrupt context */
+       return do_con_write(tty, &ch, 1);
 }
 
 static int con_write_room(struct tty_struct *tty)