ACPI: PCI: Switch to use acpi_evaluate_dsm_typed()

The acpi_evaluate_dsm_typed() provides a way to check the type of the
object evaluated by _DSM call. Use it instead of open coded variant.

Signed-off-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>

diff --git a/drivers/acpi/pci_root.c b/drivers/acpi/pci_root.c
index 84030804a763382e322f06a1bdb47032c7cb3b0f..58b89b8d950ed7a83bedd06087000104956030a3 100644 (file)
--- a/drivers/acpi/pci_root.c
+++ b/drivers/acpi/pci_root.c
@@ -1055,9 +1055,9 @@ struct pci_bus *acpi_pci_root_create(struct acpi_pci_root *root,
         * exists and returns 0, we must preserve any PCI resource
         * assignments made by firmware for this host bridge.
         */
-       obj = acpi_evaluate_dsm(ACPI_HANDLE(bus->bridge), &pci_acpi_dsm_guid, 1,
-                               DSM_PCI_PRESERVE_BOOT_CONFIG, NULL);
-       if (obj && obj->type == ACPI_TYPE_INTEGER && obj->integer.value == 0)
+       obj = acpi_evaluate_dsm_typed(ACPI_HANDLE(bus->bridge), &pci_acpi_dsm_guid, 1,
+                                     DSM_PCI_PRESERVE_BOOT_CONFIG, NULL, ACPI_TYPE_INTEGER);
+       if (obj && obj->integer.value == 0)
                host_bridge->preserve_config = 1;
        ACPI_FREE(obj);