ACPI: EC: Make acpi_ec_ecdt_probe() more straightforward

Since acpi_ec_ecdt_probe() is called when boot_ec is not set, it
doesn't neeed to take the other possibility into account.

Accordingly, it only needs to set the handle field in the ec object
to ACPI_ROOT_OBJECT, call acpi_ec_setup() and (if that is successful)
set boot_ec to ec and boot_ec_is_ecdt to 'true'.  Make it do so
directly, without calling acpi_config_boot_ec(), and avoid some
pointless checks in the latter.

No intentional functional impact except for a changed message.

Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>

diff --git a/drivers/acpi/ec.c b/drivers/acpi/ec.c
index c185666..22b8866 100644 (file)
--- a/drivers/acpi/ec.c
+++ b/drivers/acpi/ec.c
@@ -1907,14 +1907,22 @@ void __init acpi_ec_ecdt_probe(void)
                ec->data_addr = ecdt_ptr->data.address;
        }
        ec->gpe = ecdt_ptr->gpe;
+       ec->handle = ACPI_ROOT_OBJECT;
 
        /*
         * At this point, the namespace is not initialized, so do not find
         * the namespace objects, or handle the events.
         */
-       ret = acpi_config_boot_ec(ec, ACPI_ROOT_OBJECT, false, true);
-       if (ret)
+       ret = acpi_ec_setup(ec, false);
+       if (ret) {
                acpi_ec_free(ec);
+               return;
+       }
+
+       boot_ec = ec;
+       boot_ec_is_ecdt = true;
+
+       pr_info("Boot ECDT EC used to handle transactions\n");
 }
 
 #ifdef CONFIG_PM_SLEEP