[patch 3/5] x86: io delay - add checking for NULL early param

[Cyrill Gorcunov]

Signed-off-by: Cyrill Gorcunov <gorcunov@xxxxxxxxx>
---

Index: linux-2.6.git/arch/x86/kernel/io_delay.c
====================================================================
--- linux-2.6.git.orig/arch/x86/kernel/io_delay.c	2008-06-23 22:30:14.000000000 +0400
+++ linux-2.6.git/arch/x86/kernel/io_delay.c	2008-07-05 12:49:06.000000000 +0400
@@ -103,6 +103,9 @@ void __init io_delay_init(void)
 
 static int __init io_delay_param(char *s)
 {
+	if (!s)
+		return -EINVAL;
+
 	if (!strcmp(s, "0x80"))
 		io_delay_type = CONFIG_IO_DELAY_TYPE_0X80;
 	else if (!strcmp(s, "0xed"))

-- 
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