diff --git a/drivers/tty/tty_ioctl.c b/drivers/tty/tty_ioctl.c
index 89ae23a..632fc81 100644
--- a/drivers/tty/tty_ioctl.c
+++ b/drivers/tty/tty_ioctl.c
@@ -218,10 +218,10 @@
 	if (!timeout)
 		timeout = MAX_SCHEDULE_TIMEOUT;
 
-	if (wait_event_interruptible_timeout(tty->write_wait,
-			!tty_chars_in_buffer(tty), timeout) < 0) {
+	timeout = wait_event_interruptible_timeout(tty->write_wait,
+			!tty_chars_in_buffer(tty), timeout);
+	if (timeout <= 0)
 		return;
-	}
 
 	if (timeout == MAX_SCHEDULE_TIMEOUT)
 		timeout = 0;