ACPI: processor: Fix null pointer dereference in throttling

http://bugzilla.kernel.org/show_bug.cgi?id=9747

Signed-off-by: Alexey Starikovskiy <astarikovskiy@suse.de>
Signed-off-by: Len Brown <len.brown@intel.com>

diff --git a/drivers/acpi/processor_throttling.c b/drivers/acpi/processor_throttling.c
index 6742d7b..1685b40 100644 (file)
--- a/drivers/acpi/processor_throttling.c
+++ b/drivers/acpi/processor_throttling.c
@@ -775,12 +775,12 @@ int acpi_processor_get_throttling_info(struct acpi_processor *pr)
                acpi_processor_get_throttling_states(pr) ||
                acpi_processor_get_platform_limit(pr))
        {
-               if (acpi_processor_get_fadt_info(pr))
-                       return 0;
                pr->throttling.acpi_processor_get_throttling =
                    &acpi_processor_get_throttling_fadt;
                pr->throttling.acpi_processor_set_throttling =
                    &acpi_processor_set_throttling_fadt;
+               if (acpi_processor_get_fadt_info(pr))
+                       return 0;
        } else {
                pr->throttling.acpi_processor_get_throttling =
                    &acpi_processor_get_throttling_ptc;