acpi: add checking for NULL early param

The early_param handling function could recieve NULL pointer as argument
in case if user didn't enter parameter value.  So we have to be ready for
a such situation and do check for NULL pointer if needed.

Signed-off-by: Cyrill Gorcunov <gorcunov@gmail.com>
Cc: Andi Kleen <andi@firstfloor.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Andi Kleen <ak@linux.intel.com>
This commit is contained in:
Cyrill Gorcunov 2008-08-20 16:41:45 -07:00 committed by Andi Kleen
parent 1371c893ff
commit f0df2d6b52

View File

@ -300,6 +300,8 @@ int __init acpi_table_init(void)
static int __init acpi_parse_apic_instance(char *str)
{
if (!str)
return -EINVAL;
acpi_apic_instance = simple_strtoul(str, NULL, 0);