synclink series: switch to int put_char method

Signed-off-by: Alan Cox <alan@redhat.com>
Cc: Paul Fulghum <paulkf@microgate.com>
Cc: Jiri Slaby <jirislaby@gmail.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>

1 files changed, 9 insertions, 5 deletions

diff --git a/drivers/char/synclink_gt.c b/drivers/char/synclink_gt.c
index 1a11717b1adc..430f5bc0ae30 100644
--- a/drivers/char/synclink_gt.c
+++ b/drivers/char/synclink_gt.c
@@ -151,7 +151,7 @@ static void hangup(struct tty_struct *tty);
 static void set_termios(struct tty_struct *tty, struct ktermios *old_termios);
 
 static int  write(struct tty_struct *tty, const unsigned char *buf, int count);
-static void put_char(struct tty_struct *tty, unsigned char ch);
+static int put_char(struct tty_struct *tty, unsigned char ch);
 static void send_xchar(struct tty_struct *tty, char ch);
 static void wait_until_sent(struct tty_struct *tty, int timeout);
 static int  write_room(struct tty_struct *tty);
@@ -912,20 +912,24 @@ cleanup:
         return ret;
 }
 
-static void put_char(struct tty_struct *tty, unsigned char ch)
+static int put_char(struct tty_struct *tty, unsigned char ch)
 {
         struct slgt_info *info = tty->driver_data;
         unsigned long flags;
+        int ret;
 
         if (sanity_check(info, tty->name, "put_char"))
-                return;
+                return 0;
         DBGINFO(("%s put_char(%d)\n", info->device_name, ch));
         if (!info->tx_buf)
-                return;
+                return 0;
         spin_lock_irqsave(&info->lock,flags);
-        if (!info->tx_active && (info->tx_count < info->max_frame_size))
+        if (!info->tx_active && (info->tx_count < info->max_frame_size)) {
                 info->tx_buf[info->tx_count++] = ch;
+                ret = 1;
+        }
         spin_unlock_irqrestore(&info->lock,flags);
+        return ret;
 }
 
 static void send_xchar(struct tty_struct *tty, char ch)