From 937a2eb65f2257ca90697ad69d648178b7037cec Mon Sep 17 00:00:00 2001
From: Haavard Skinnemoen <haavard.skinnemoen@atmel.com>
Date: Wed, 16 Jul 2008 21:52:46 +0100
Subject: [PATCH] --- yaml --- r: 102348 b: refs/heads/master c:
 9afd561acabe5059ff16d163a176e2350269aba5 h: refs/heads/master v: v3

---
 [refs]                              |  2 +-
 trunk/drivers/serial/atmel_serial.c | 15 +++++++++++++++
 2 files changed, 16 insertions(+), 1 deletion(-)

diff --git a/[refs] b/[refs]
index 37c615a38fd2..075430b32837 100644
--- a/[refs]
+++ b/[refs]
@@ -1,2 +1,2 @@
 ---
-refs/heads/master: 6bb0e3a59a089e23eecc0af3b6f6012b2a9affba
+refs/heads/master: 9afd561acabe5059ff16d163a176e2350269aba5
diff --git a/trunk/drivers/serial/atmel_serial.c b/trunk/drivers/serial/atmel_serial.c
index 6aeef22bd203..c17fcd6085f3 100644
--- a/trunk/drivers/serial/atmel_serial.c
+++ b/trunk/drivers/serial/atmel_serial.c
@@ -955,6 +955,20 @@ static void atmel_shutdown(struct uart_port *port)
 		atmel_close_hook(port);
 }
 
+/*
+ * Flush any TX data submitted for DMA. Called when the TX circular
+ * buffer is reset.
+ */
+static void atmel_flush_buffer(struct uart_port *port)
+{
+	struct atmel_uart_port *atmel_port = to_atmel_uart_port(port);
+
+	if (atmel_use_dma_tx(port)) {
+		UART_PUT_TCR(port, 0);
+		atmel_port->pdc_tx.ofs = 0;
+	}
+}
+
 /*
  * Power / Clock management.
  */
@@ -1189,6 +1203,7 @@ static struct uart_ops atmel_pops = {
 	.break_ctl	= atmel_break_ctl,
 	.startup	= atmel_startup,
 	.shutdown	= atmel_shutdown,
+	.flush_buffer	= atmel_flush_buffer,
 	.set_termios	= atmel_set_termios,
 	.type		= atmel_type,
 	.release_port	= atmel_release_port,