commit 79119cf800c51f43f7f5415250b99664bc57641d
Author: Alon Ziv <alonz@discretix.com>
Date:   Sun Nov 15 09:45:04 2009 +0200

    Xilinx 16550 UART is actually 16550A-compatible

diff --git a/drivers/serial/of_serial.c b/drivers/serial/of_serial.c
index 02406ba..78267af 100644
--- a/drivers/serial/of_serial.c
+++ b/drivers/serial/of_serial.c
@@ -161,7 +161,7 @@ static int of_platform_serial_remove(struct of_device *ofdev)
 static struct of_device_id __devinitdata of_platform_serial_table[] = {
 	{ .type = "serial", .compatible = "ns8250",   .data = (void *)PORT_8250, },
 	{ .type = "serial", .compatible = "ns16450",  .data = (void *)PORT_16450, },
-	{ .type = "serial", .compatible = "ns16550",  .data = (void *)PORT_16550, },
+	{ .type = "serial", .compatible = "ns16550",  .data = (void *)PORT_16550A, },
 	{ .type = "serial", .compatible = "ns16750",  .data = (void *)PORT_16750, },
 	{ .type = "serial", .compatible = "ns16850",  .data = (void *)PORT_16850, },
 #ifdef CONFIG_SERIAL_OF_PLATFORM_NWPSERIAL