commit e76afc4e7816a0a5300073098cdac93a994eb5ca
author Eric Lammerts <linux-arm@lists.lammerts.org> Tue May 19 20:53:20 2009 -0400
committer Sascha Hauer <s.hauer@pengutronix.de> Wed Jun 03 11:51:05 2009 +0200
tree 6ab016b8b17e303246d597df2d12d7d60f8cad19
parent 9fa7eb283c5cdc2b0f4a8cfe6387ed82e5e9a3d3

fix oops when using console=ttymxcN with N > 0

Signed-off-by: Eric Lammerts <eric@lammerts.org>
Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>

drivers/serial/imx.c

diff --git a/drivers/serial/imx.c b/drivers/serial/imx.c
index 9f460b1..5f0be40 100644
--- a/drivers/serial/imx.c
+++ b/drivers/serial/imx.c
@@ -1031,6 +1031,8 @@
 	if (co->index == -1 || co->index >= ARRAY_SIZE(imx_ports))
 		co->index = 0;
 	sport = imx_ports[co->index];
+	if(sport == NULL)
+		return -ENODEV;
 
 	if (options)
 		uart_parse_options(options, &baud, &parity, &bits, &flow);