diff options
Diffstat (limited to 'drivers/char/generic_serial.c')
| -rw-r--r-- | drivers/char/generic_serial.c | 11 |
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; } |