serial: access after NULL check in uart_flush_buffer()

[net-next-2.6.git] / drivers / serial / serial_core.c

diff --git a/drivers/serial/serial_core.c b/drivers/serial/serial_core.c
index 1e2b9d826f69a5db2756e8eb477f2249587122e4..eab032733790d5524ac9f14e8596c1a5a62e462c 100644 (file)
--- a/drivers/serial/serial_core.c
+++ b/drivers/serial/serial_core.c
@@ -556,7 +556,7 @@ static int uart_chars_in_buffer(struct tty_struct *tty)
 static void uart_flush_buffer(struct tty_struct *tty)
 {
        struct uart_state *state = tty->driver_data;
-       struct uart_port *port = state->port;
+       struct uart_port *port;
        unsigned long flags;
 
        /*
@@ -568,6 +568,7 @@ static void uart_flush_buffer(struct tty_struct *tty)
                return;
        }
 
+       port = state->port;
        pr_debug("uart_flush_buffer(%d) called\n", tty->index);
 
        spin_lock_irqsave(&port->lock, flags);