From: Sascha Hauer <sascha@saschahauer.de>
Date: Thu, 17 Apr 2008 07:44:47 +0000 (+0100)
Subject: [ARM] 4996/1: <IMX UART>: do not enable tx empty interrupt on startup
X-Git-Tag: v2.6.26-rc1~1131^2~2^7~2
X-Git-Url: https://git.karo-electronics.de/?a=commitdiff_plain;h=789d52589a0849004ced991549a61dd110dfeb10;p=karo-tx-linux.git

[ARM] 4996/1: <IMX UART>: do not enable tx empty interrupt on startup

We are not interested in tranceiver empty interrupts until we actually
sent a buffer.

Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
---

diff --git a/drivers/serial/imx.c b/drivers/serial/imx.c
index f7596641f121..dd1e071834be 100644
--- a/drivers/serial/imx.c
+++ b/drivers/serial/imx.c
@@ -536,7 +536,7 @@ static int imx_startup(struct uart_port *port)
 	writel(USR1_RTSD, sport->port.membase + USR1);
 
 	temp = readl(sport->port.membase + UCR1);
-	temp |= (UCR1_TXMPTYEN | UCR1_RRDYEN | UCR1_RTSDEN | UCR1_UARTEN);
+	temp |= UCR1_RRDYEN | UCR1_RTSDEN | UCR1_UARTEN;
 	writel(temp, sport->port.membase + UCR1);
 
 	temp = readl(sport->port.membase + UCR2);