From 6df16cb90d237a6cbc43cea2ffe920e260264bb0 Mon Sep 17 00:00:00 2001
From: Jan Weitzel <j.weitzel@phytec.de>
Date: Tue, 22 Nov 2011 13:32:19 +0100
Subject: readkey: force return from while true

If read_key is feeded by STRG + KEY_LEFT you run into the while(1)
loop and corrupt memory through esc array.
Force return if index gets too high.

Signed-off-by: Jan Weitzel <j.weitzel@phytec.de>
Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>
---
 lib/readkey.c | 2 ++
 1 file changed, 2 insertions(+)

(limited to 'lib/readkey.c')

diff --git a/lib/readkey.c b/lib/readkey.c
index a42d1cb8ff..895db8214b 100644
--- a/lib/readkey.c
+++ b/lib/readkey.c
@@ -67,6 +67,8 @@ int read_key(void)
 				esc[i] = getc();
 				if (esc[i++] == '~')
 					break;
+				if (i == 5)
+					return -1;
 			}
 		}
 		esc[i] = 0;
-- 
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