X-Git-Url: http://pilppa.org/gitweb/?a=blobdiff_plain;f=arch%2Fx86%2Fkernel%2Fio_delay.c;h=1c3a66a67f83d3bb6d7eec2d5e4cfb1560660720;hb=d6cd7effcc5e0047faf15ab0a54c980f1a616a07;hp=5921e5f0a64027745fa2ac3e5f695ceaca9ddeae;hpb=86d9fc1293aa9456677eab94e9fd2d3a10920548;p=linux-2.6-omap-h63xx.git

diff --git a/arch/x86/kernel/io_delay.c b/arch/x86/kernel/io_delay.c
index 5921e5f0a64..1c3a66a67f8 100644
--- a/arch/x86/kernel/io_delay.c
+++ b/arch/x86/kernel/io_delay.c
@@ -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"))