1 files changed, 9 insertions, 9 deletions

diff --git a/drivers/tty/serial/pch_uart.c b/drivers/tty/serial/pch_uart.c
index c59ce7886579..9576ba8bbc40 100644
--- a/drivers/tty/serial/pch_uart.c
+++ b/drivers/tty/serial/pch_uart.c
@@ -694,6 +694,7 @@ static void pch_request_dma(struct uart_port *port)
 	if (!chan) {
 		dev_err(priv->port.dev, "%s:dma_request_channel FAILS(Tx)\n",
 			__func__);
+		pci_dev_put(dma_dev);
 		return;
 	}
 	priv->chan_tx = chan;
@@ -710,6 +711,7 @@ static void pch_request_dma(struct uart_port *port)
 			__func__);
 		dma_release_channel(priv->chan_tx);
 		priv->chan_tx = NULL;
+		pci_dev_put(dma_dev);
 		return;
 	}
 
@@ -717,6 +719,8 @@ static void pch_request_dma(struct uart_port *port)
 	priv->rx_buf_virt = dma_alloc_coherent(port->dev, port->fifosize,
 				    &priv->rx_buf_dma, GFP_KERNEL);
 	priv->chan_rx = chan;
+
+	pci_dev_put(dma_dev);
 }
 
 static void pch_dma_rx_complete(void *arg)
@@ -738,17 +742,14 @@ static void pch_dma_tx_complete(void *arg)
 {
 	struct eg20t_port *priv = arg;
 	struct uart_port *port = &priv->port;
-	struct circ_buf *xmit = &port->state->xmit;
 	struct scatterlist *sg = priv->sg_tx_p;
 	int i;
 
-	for (i = 0; i < priv->nent; i++, sg++) {
-		xmit->tail += sg_dma_len(sg);
-		port->icount.tx += sg_dma_len(sg);
-	}
-	xmit->tail &= UART_XMIT_SIZE - 1;
+	for (i = 0; i < priv->nent; i++, sg++)
+		uart_xmit_advance(port, sg_dma_len(sg));
+
 	async_tx_ack(priv->desc_tx);
-	dma_unmap_sg(port->dev, sg, priv->orig_nent, DMA_TO_DEVICE);
+	dma_unmap_sg(port->dev, priv->sg_tx_p, priv->orig_nent, DMA_TO_DEVICE);
 	priv->tx_dma_use = 0;
 	priv->nent = 0;
 	priv->orig_nent = 0;
@@ -843,8 +844,7 @@ static unsigned int handle_tx(struct eg20t_port *priv)
 
 	while (!uart_tx_stopped(port) && !uart_circ_empty(xmit) && fifo_size) {
 		iowrite8(xmit->buf[xmit->tail], priv->membase + PCH_UART_THR);
-		xmit->tail = (xmit->tail + 1) & (UART_XMIT_SIZE - 1);
-		port->icount.tx++;
+		uart_xmit_advance(port, 1);
 		fifo_size--;
 		tx_empty = 0;
 	}