ACPI: introduce helper function acpi_has_method()

Introduce helper function acpi_has_method() and use it in a number
of places to simplify code.

[rjw: Changelog]
Signed-off-by: Jiang Liu <jiang.liu@huawei.com>
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>

1 files changed, 1 insertions, 3 deletions

diff --git a/drivers/acpi/ec.c b/drivers/acpi/ec.c
index 80403c1a89f8..84bf06cec1f2 100644
--- a/drivers/acpi/ec.c
+++ b/drivers/acpi/ec.c
@@ -1049,10 +1049,8 @@ int __init acpi_ec_ecdt_probe(void)
                 * which needs it, has fake EC._INI method, so use it as flag.
                 * Keep boot_ec struct as it will be needed soon.
                 */
-                acpi_handle dummy;
                 if (!dmi_name_in_vendors("ASUS") ||
-                    ACPI_FAILURE(acpi_get_handle(boot_ec->handle, "_INI",
-                                                        &dummy)))
+                    !acpi_has_method(boot_ec->handle, "_INI"))
                         return -ENODEV;
         }
 install: