serial: pch_uart: remove unnecessary tty_port_tty_get

Remove unused tty-reference from dma-rx path which was left after the
recent tty-port conversions.

Also remove a redundant port initialisation while at it.

Signed-off-by: Johan Hovold <jhovold@gmail.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

diff --git a/drivers/tty/serial/pch_uart.c b/drivers/tty/serial/pch_uart.c
index 2c5a3e4a17dbc5b6e487e4d60e7182b63e2555bd..44077c0b7670075625650c9d00cc98a63bb90f5c 100644 (file)
--- a/drivers/tty/serial/pch_uart.c
+++ b/drivers/tty/serial/pch_uart.c
@@ -667,31 +667,21 @@ static int pop_tx_x(struct eg20t_port *priv, unsigned char *buf)
 
 static int dma_push_rx(struct eg20t_port *priv, int size)
 {
-       struct tty_struct *tty;
        int room;
        struct uart_port *port = &priv->port;
        struct tty_port *tport = &port->state->port;
 
-       port = &priv->port;
-       tty = tty_port_tty_get(tport);
-       if (!tty) {
-               dev_dbg(priv->port.dev, "%s:tty is busy now", __func__);
-               return 0;
-       }
-
        room = tty_buffer_request_room(tport, size);
 
        if (room < size)
                dev_warn(port->dev, "Rx overrun: dropping %u bytes\n",
                         size - room);
        if (!room)
-               goto out;
+               return 0;
 
        tty_insert_flip_string(tport, sg_virt(&priv->sg_rx), size);
 
        port->icount.rx += room;
-out:
-       tty_kref_put(tty);
 
        return room;
 }