TTY: switch tty_insert_flip_string

Now, we start converting tty buffer functions to actually use
tty_port. This will allow us to get rid of the need of tty in many
call sites. Only tty_port will needed and hence no more
tty_port_tty_get in those paths.

tty_insert_flip_string this time.

Signed-off-by: Jiri Slaby <jslaby@suse.cz>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
diff --git a/drivers/tty/serial/msm_serial_hs.c b/drivers/tty/serial/msm_serial_hs.c
index 6aa9d47..11b7f5b 100644
--- a/drivers/tty/serial/msm_serial_hs.c
+++ b/drivers/tty/serial/msm_serial_hs.c
@@ -961,7 +961,7 @@
 	rx_count = msm_hs_read(uport, UARTDM_RX_TOTAL_SNAP_ADDR);
 
 	if (0 != (uport->read_status_mask & CREAD)) {
-		retval = tty_insert_flip_string(tty, msm_uport->rx.buffer,
+		retval = tty_insert_flip_string(port, msm_uport->rx.buffer,
 						rx_count);
 		BUG_ON(retval != rx_count);
 	}