From 0f27d1cbb4e44c01fc40ef9f0ac6bc916e153d70 Mon Sep 17 00:00:00 2001
From: Huibin Hong <huibin.hong@rock-chips.com>
Date: Wed, 9 May 2018 15:14:41 +0800
Subject: [PATCH] serial: 8250: modify warning log about dma request fail

Change-Id: Ib26ef05bb04542ff8d4527a8e7a79cae4dcaa31d
Signed-off-by: Huibin Hong <huibin.hong@rock-chips.com>
---
 drivers/tty/serial/8250/8250_port.c | 5 +++++
 1 file changed, 5 insertions(+)

diff --git a/drivers/tty/serial/8250/8250_port.c b/drivers/tty/serial/8250/8250_port.c
index c4f491c41542..6b6909d9c005 100644
--- a/drivers/tty/serial/8250/8250_port.c
+++ b/drivers/tty/serial/8250/8250_port.c
@@ -2370,8 +2370,13 @@ dont_test_tx_en:
 	if (up->dma) {
 		retval = serial8250_request_dma(up);
 		if (retval) {
+#ifdef CONFIG_ARCH_ROCKCHIP
+			pr_warn_ratelimited("%s - failed to request DMA, use interrupt mode\n",
+					    port->name);
+#else
 			pr_warn_ratelimited("%s - failed to request DMA\n",
 					    port->name);
+#endif
 			up->dma = NULL;
 		}
 	}