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x86: io delay - add checking for NULL early param 

Signed-off-by: Cyrill Gorcunov <gorcunov@gmail.com>
Cc: akpm@linux-foundation.org
Cc: andi@firstfloor.org
Signed-off-by: Ingo Molnar <mingo@elte.hu>
hifive-unleashed-5.1
Cyrill Gorcunov 2008-07-05 15:53:37 +04:00 committed by Ingo Molnar
parent ab6bc3e343
commit d6cd7effcc
1 changed files with 3 additions and 0 deletions
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3
arch/x86/kernel/io_delay.c
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@ -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"))