1 files changed, 4 insertions, 1 deletions

diff --git a/arch/um/drivers/line.c b/arch/um/drivers/line.c
index 4bd40bb43ec2..1fb3e51108b9 100644
--- a/arch/um/drivers/line.c
+++ b/arch/um/drivers/line.c
@@ -454,7 +454,10 @@ int line_open(struct line *lines, struct tty_struct *tty)
         tty->driver_data = line;
         line->tty = tty;
 
-        enable_chan(line);
+        err = enable_chan(line);
+        if (err)
+                return err;
+
         INIT_DELAYED_WORK(&line->task, line_timer_cb);
 
         if(!line->sigio){