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x86: idle process - add checking for NULL early param

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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>
This commit is contained in:
Cyrill Gorcunov 2008-07-05 15:53:36 +04:00 committed by Ingo Molnar
parent 84e65b0a84
commit ab6bc3e343
1 changed files with 3 additions and 0 deletions
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3
arch/x86/kernel/process.c
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@ -164,6 +164,9 @@ void __cpuinit select_idle_routine(const struct cpuinfo_x86 *c)
static int __init idle_setup(char *str)
{
if (!str)
return -EINVAL;
if (!strcmp(str, "poll")) {
printk("using polling idle threads.\n");
pm_idle = poll_idle;