acpi_processor: convert acpi_evaluate_object() to acpi_evaluate_integer()

acpi_evaluate_integer() is an ACPI API introduced to evaluate an
ACPI control method that is known to have an integer return value.
This API can simplify the code because the calling function does not need to
use the specified acpi_buffer structure required by acpi_evaluate_object();

Convert acpi_evaluate_object() to acpi_evaluate_integer()
in drivers/acpi/acpi_processor.c in this patch.

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

diff --git a/drivers/acpi/acpi_processor.c b/drivers/acpi/acpi_processor.c
index f29e06efa47976eba16e3b4e449a8b5a9235909f..357abdc1406acbf29b5e6fe3010f0f731fb41c88 100644 (file)
--- a/drivers/acpi/acpi_processor.c
+++ b/drivers/acpi/acpi_processor.c
@@ -219,6 +219,7 @@ static int acpi_processor_get_info(struct acpi_device *device)
        int cpu_index, device_declaration = 0;
        acpi_status status = AE_OK;
        static int cpu0_initialized;
+       unsigned long long value;
 
        if (num_online_cpus() > 1)
                errata.smp = TRUE;
@@ -258,7 +259,6 @@ static int acpi_processor_get_info(struct acpi_device *device)
                 * Declared with "Device" statement; match _UID.
                 * Note that we don't handle string _UIDs yet.
                 */
-               unsigned long long value;
                status = acpi_evaluate_integer(pr->handle, METHOD_NAME__UID,
                                                NULL, &value);
                if (ACPI_FAILURE(status)) {
@@ -332,9 +332,9 @@ static int acpi_processor_get_info(struct acpi_device *device)
         * ensure we get the right value in the "physical id" field
         * of /proc/cpuinfo
         */
-       status = acpi_evaluate_object(pr->handle, "_SUN", NULL, &buffer);
+       status = acpi_evaluate_integer(pr->handle, "_SUN", NULL, &value);
        if (ACPI_SUCCESS(status))
-               arch_fix_phys_package_id(pr->id, object.integer.value);
+               arch_fix_phys_package_id(pr->id, value);
 
        return 0;
 }