s390 tty: Prepare for put_char to return success/fail

Put the changes into the drivers first.  This will still compile/work but
produce a warning if bisected so can still be debugged

Signed-off-by: Alan Cox <alan@redhat.com>
Cc: Martin Schwidefsky <schwidefsky@de.ibm.com>
Cc: Heiko Carstens <heiko.carstens@de.ibm.com>
Cc: Christian Borntraeger <borntraeger@de.ibm.com>
Cc: Peter Oberparleiter <peter.oberparleiter@de.ibm.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>

1 files changed, 2 insertions, 1 deletions

diff --git a/drivers/s390/char/tty3270.c b/drivers/s390/char/tty3270.c
index 70b1980a08b6..c1f2adefad41 100644
--- a/drivers/s390/char/tty3270.c
+++ b/drivers/s390/char/tty3270.c
@@ -965,7 +965,7 @@ tty3270_write_room(struct tty_struct *tty)
  * Insert character into the screen at the current position with the
  * current color and highlight. This function does NOT do cursor movement.
  */
-static void
+static int
 tty3270_put_character(struct tty3270 *tp, char ch)
 {
         struct tty3270_line *line;
@@ -986,6 +986,7 @@ tty3270_put_character(struct tty3270 *tp, char ch)
         cell->character = tp->view.ascebc[(unsigned int) ch];
         cell->highlight = tp->highlight;
         cell->f_color = tp->f_color;
+        return 1;
 }
 
 /*