x86: smpboot maxcpus - 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>
This commit is contained in:
Cyrill Gorcunov 2008-07-05 15:53:38 +04:00 committed by Ingo Molnar
parent d6cd7effcc
commit 4d8cc874d7

View File

@ -1452,7 +1452,8 @@ static int __init parse_maxcpus(char *arg)
{
extern unsigned int maxcpus;
maxcpus = simple_strtoul(arg, NULL, 0);
if (arg)
maxcpus = simple_strtoul(arg, NULL, 0);
return 0;
}
early_param("maxcpus", parse_maxcpus);