hso serial throttled tty kref fix.

This patch is for Alan Cox as it related to the tty layer.
Hopefully the hso driver is again relatively stable with this fix.

Signed-off-by: Denis Joseph Barrow <D.Barow@option.com>
Signed-off-by: Alan Cox <alan@redhat.com>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>

1 files changed, 3 insertions, 1 deletions

diff --git a/drivers/net/usb/hso.c b/drivers/net/usb/hso.c
index e25a58f6ff69..6478bf63f289 100644
--- a/drivers/net/usb/hso.c
+++ b/drivers/net/usb/hso.c
@@ -2053,8 +2053,10 @@ static int put_rxbuf_data(struct urb *urb, struct hso_serial *serial)
                         serial->curr_rx_urb_offset;
                 D1("data to push to tty");
                 while (write_length_remaining) {
-                        if (test_bit(TTY_THROTTLED, &tty->flags))
+                        if (test_bit(TTY_THROTTLED, &tty->flags)) {
+                                tty_kref_put(tty);
                                 return -1;
+                        }
                         curr_write_len =  tty_insert_flip_string
                                 (tty, urb->transfer_buffer +
                                  serial->curr_rx_urb_offset,