[ACPI] fix to the stack-audit patch

http://bugzilla.kernel.org/show_bug.cgi?id=2901Signed-off-by: Len Brown <len.brown@intel.com>

drivers/acpi/pci_bind.c

@@ -289,7 +289,7 @@ acpi_pci_bind_root (
 		return_VALUE(-ENOMEM);
 	memset(pathname, 0, ACPI_PATHNAME_MAX);
 
-	buffer.length = sizeof(pathname);
+	buffer.length = ACPI_PATHNAME_MAX;
 	buffer.pointer = pathname;
 
 	if (!device || !id || !bus){

drivers/acpi/thermal.c

@@ -917,7 +917,7 @@ acpi_thermal_write_trip_points (
 	if(!active)
 		return_VALUE(-ENOMEM);
 
-	if (!tz || (count > sizeof(limit_string) - 1)) {
+	if (!tz || (count > ACPI_THERMAL_MAX_LIMIT_STR_LEN - 1)) {
 		ACPI_DEBUG_PRINT((ACPI_DB_ERROR, "Invalid argument\n"));
 		count = -EINVAL;
 		goto end;