char: switch gs, cyclades and esp to return int for put_char

Signed-off-by: Alan Cox <alan@redhat.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, 6 insertions, 5 deletions

diff --git a/drivers/char/generic_serial.c b/drivers/char/generic_serial.c
index f6610f28d657..149518e22fa6 100644
--- a/drivers/char/generic_serial.c
+++ b/drivers/char/generic_serial.c
@@ -48,19 +48,19 @@ static int gs_debug;
 module_param(gs_debug, int, 0644);
 
 
-void gs_put_char(struct tty_struct * tty, unsigned char ch)
+int gs_put_char(struct tty_struct * tty, unsigned char ch)
 {
         struct gs_port *port;
 
         func_enter (); 
 
-        if (!tty) return;
+        if (!tty) return 0;
 
         port = tty->driver_data;
 
-        if (!port) return;
+        if (!port) return 0;
 
-        if (! (port->flags & ASYNC_INITIALIZED)) return;
+        if (! (port->flags & ASYNC_INITIALIZED)) return 0;
 
         /* Take a lock on the serial tranmit buffer! */
         mutex_lock(& port->port_write_mutex);
@@ -68,7 +68,7 @@ void gs_put_char(struct tty_struct * tty, unsigned char ch)
         if (port->xmit_cnt >= SERIAL_XMIT_SIZE - 1) {
                 /* Sorry, buffer is full, drop character. Update statistics???? -- REW */
                 mutex_unlock(&port->port_write_mutex);
-                return;
+                return 0;
         }
 
         port->xmit_buf[port->xmit_head++] = ch;
@@ -77,6 +77,7 @@ void gs_put_char(struct tty_struct * tty, unsigned char ch)
 
         mutex_unlock(&port->port_write_mutex);
         func_exit ();
+        return 1;
 }