2 files changed, 4 insertions, 15 deletions

diff --git a/arch/um/drivers/chan_kern.c b/arch/um/drivers/chan_kern.c
index c3bba73e4be6..e9a0abc6a32f 100644
--- a/arch/um/drivers/chan_kern.c
+++ b/arch/um/drivers/chan_kern.c
@@ -83,21 +83,8 @@ static const struct chan_ops not_configged_ops = {
 
 static void tty_receive_char(struct tty_struct *tty, char ch)
 {
-        if (tty == NULL)
-                return;
-
-        if (I_IXON(tty) && !I_IXOFF(tty) && !tty->raw) {
-                if (ch == STOP_CHAR(tty)) {
-                        stop_tty(tty);
-                        return;
-                }
-                else if (ch == START_CHAR(tty)) {
-                        start_tty(tty);
-                        return;
-                }
-        }
-
-        tty_insert_flip_char(tty, ch, TTY_NORMAL);
+        if (tty)
+                tty_insert_flip_char(tty, ch, TTY_NORMAL);
 }
 
 static int open_one_chan(struct chan *chan)
diff --git a/arch/um/drivers/line.c b/arch/um/drivers/line.c
index fd9a15b318af..9ffc28bd4b7a 100644
--- a/arch/um/drivers/line.c
+++ b/arch/um/drivers/line.c
@@ -584,6 +584,8 @@ int register_lines(struct line_driver *line_driver,
                 printk(KERN_ERR "register_lines : can't register %s driver\n",
                        line_driver->name);
                 put_tty_driver(driver);
+                for (i = 0; i < nlines; i++)
+                        tty_port_destroy(&lines[i].port);
                 return err;
         }