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, 7 insertions, 4 deletions

diff --git a/drivers/char/synclinkmp.c b/drivers/char/synclinkmp.c
index 2f1988c48ee3..a624ffd7baaa 100644
--- a/drivers/char/synclinkmp.c
+++ b/drivers/char/synclinkmp.c
@@ -519,7 +519,7 @@ 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);
@@ -1045,10 +1045,11 @@ cleanup:
 
 /* Add a character to the transmit buffer.
  */
-static void put_char(struct tty_struct *tty, unsigned char ch)
+static int put_char(struct tty_struct *tty, unsigned char ch)
 {
         SLMP_INFO *info = (SLMP_INFO *)tty->driver_data;
         unsigned long flags;
+        int ret = 0;
 
         if ( debug_level >= DEBUG_LEVEL_INFO ) {
                 printk( "%s(%d):%s put_char(%d)\n",
@@ -1056,10 +1057,10 @@ static void put_char(struct tty_struct *tty, unsigned char ch)
         }
 
         if (sanity_check(info, tty->name, "put_char"))
-                return;
+                return 0;
 
         if (!info->tx_buf)
-                return;
+                return 0;
 
         spin_lock_irqsave(&info->lock,flags);
 
@@ -1071,10 +1072,12 @@ static void put_char(struct tty_struct *tty, unsigned char ch)
                         if (info->tx_put >= info->max_frame_size)
                                 info->tx_put -= info->max_frame_size;
                         info->tx_count++;
+                        ret = 1;
                 }
         }
 
         spin_unlock_irqrestore(&info->lock,flags);
+        return ret;
 }
 
 /* Send a high-priority XON/XOFF character