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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>
This commit is contained in:
Johan Hovold 2013-09-10 12:50:51 +02:00 committed by Greg Kroah-Hartman
parent 19b85cfb19
commit 0b53861230
1 changed files with 1 additions and 11 deletions
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12
drivers/tty/serial/pch_uart.c
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@ -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;
}