From 66b3e8ea7affcb6a92a4eb711cd5c890277b4841 Mon Sep 17 00:00:00 2001
From: Sonic Zhang <sonic.zhang@analog.com>
Date: Fri, 21 Dec 2007 16:45:12 +0800
Subject: [PATCH] --- yaml --- r: 86555 b: refs/heads/master c:
 1b73351c6afcc3acbf9e29a43ee14b3c9a386503 h: refs/heads/master i:   86553:
 2d0bb1bbf109dfb8aed36208b4bd7886a389fc61   86551:
 4d1e8afdcedd0780294b6a13f5447863d946a2a4 v: v3

---
 [refs]                          |  2 +-
 trunk/drivers/serial/bfin_5xx.c | 25 ++++++++++---------------
 2 files changed, 11 insertions(+), 16 deletions(-)

diff --git a/[refs] b/[refs]
index eca1f56c159a..a9933264c535 100644
--- a/[refs]
+++ b/[refs]
@@ -1,2 +1,2 @@
 ---
-refs/heads/master: 759eb040901af60d8a1a2b59b93805521b156cbb
+refs/heads/master: 1b73351c6afcc3acbf9e29a43ee14b3c9a386503
diff --git a/trunk/drivers/serial/bfin_5xx.c b/trunk/drivers/serial/bfin_5xx.c
index e059475c91ae..3a2aa7e277fa 100644
--- a/trunk/drivers/serial/bfin_5xx.c
+++ b/trunk/drivers/serial/bfin_5xx.c
@@ -84,7 +84,7 @@ static void bfin_serial_mctrl_check(struct bfin_serial_port *uart);
 static void bfin_serial_stop_tx(struct uart_port *port)
 {
 	struct bfin_serial_port *uart = (struct bfin_serial_port *)port;
-#ifndef CONFIG_BF54x
+#if !defined(CONFIG_BF54x) && !defined(CONFIG_SERIAL_BFIN_DMA)
 	unsigned short ier;
 #endif
 
@@ -307,7 +307,6 @@ static void bfin_serial_tx_chars(struct bfin_serial_port *uart)
 		UART_PUT_CHAR(uart, uart->port.x_char);
 		uart->port.icount.tx++;
 		uart->port.x_char = 0;
-		return;
 	}
 	/*
 	 * Check the modem control lines before
@@ -376,28 +375,26 @@ static void bfin_serial_dma_tx_chars(struct bfin_serial_port *uart)
 
 	if (!uart->tx_done)
 		return;
-
 	uart->tx_done = 0;
 
+	if (uart_circ_empty(xmit) || uart_tx_stopped(&uart->port)) {
+		bfin_serial_stop_tx(&uart->port);
+		uart->tx_done = 1;
+		return;
+	}
+
 	if (uart->port.x_char) {
 		UART_PUT_CHAR(uart, uart->port.x_char);
 		uart->port.icount.tx++;
 		uart->port.x_char = 0;
-		uart->tx_done = 1;
-		return;
 	}
+
 	/*
 	 * Check the modem control lines before
 	 * transmitting anything.
 	 */
 	bfin_serial_mctrl_check(uart);
 
-	if (uart_circ_empty(xmit) || uart_tx_stopped(&uart->port)) {
-		bfin_serial_stop_tx(&uart->port);
-		uart->tx_done = 1;
-		return;
-	}
-
 	spin_lock_irqsave(&uart->port.lock, flags);
 	uart->tx_count = CIRC_CNT(xmit->head, xmit->tail, UART_XMIT_SIZE);
 	if (uart->tx_count > (UART_XMIT_SIZE - xmit->tail))
@@ -471,8 +468,6 @@ void bfin_serial_rx_dma_timeout(struct bfin_serial_port *uart)
 	int x_pos, pos;
 	int flags = 0;
 
-	bfin_serial_dma_tx_chars(uart);
-
 	spin_lock_irqsave(&uart->port.lock, flags);
 	x_pos = DMA_RX_XCOUNT - get_dma_curr_xcount(uart->rx_dma_channel);
 	if (x_pos == DMA_RX_XCOUNT)
@@ -513,9 +508,9 @@ static irqreturn_t bfin_serial_dma_tx_int(int irq, void *dev_id)
 		if (uart_circ_chars_pending(xmit) < WAKEUP_CHARS)
 			uart_write_wakeup(&uart->port);
 
-		if (uart_circ_empty(xmit))
-			bfin_serial_stop_tx(&uart->port);
 		uart->tx_done = 1;
+
+		bfin_serial_dma_tx_chars(uart);
 	}
 
 	spin_unlock(&uart->port.lock);