ACPI / dock: Pass ACPI device pointer to acpi_device_is_battery()

Since we already know what the device's PNP IDs are when
acpi_device_is_battery() is called, it is not necessary to run
acpi_get_object_info() for the device in that function.  Instead, if
acpi_device_is_battery() is passed a pointer to a struct acpi_device
object, it can use the list of PNP IDs from that object, so make that
happen and modify the function's header accordingly

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

1 files changed, 11 insertions, 13 deletions

diff --git a/drivers/acpi/scan.c b/drivers/acpi/scan.c
index ec12d970d78d..518aae461a00 100644
--- a/drivers/acpi/scan.c
+++ b/drivers/acpi/scan.c
@@ -1662,24 +1662,22 @@ bool acpi_bay_match(acpi_handle handle)
         return acpi_ata_match(phandle);
 }
 
-bool acpi_device_is_battery(acpi_handle handle)
+bool acpi_device_is_battery(struct acpi_device *adev)
 {
-        struct acpi_device_info *info;
-        bool ret = false;
-
-        if (!ACPI_SUCCESS(acpi_get_object_info(handle, &info)))
-                return false;
+        struct acpi_hardware_id *hwid;
 
-        if (info->valid & ACPI_VALID_HID)
-                ret = !strcmp("PNP0C0A", info->hardware_id.string);
+        list_for_each_entry(hwid, &adev->pnp.ids, list)
+                if (!strcmp("PNP0C0A", hwid->id))
+                        return true;
 
-        kfree(info);
-        return ret;
+        return false;
 }
 
-static bool is_ejectable_bay(acpi_handle handle)
+static bool is_ejectable_bay(struct acpi_device *adev)
 {
-        if (acpi_has_method(handle, "_EJ0") && acpi_device_is_battery(handle))
+        acpi_handle handle = adev->handle;
+
+        if (acpi_has_method(handle, "_EJ0") && acpi_device_is_battery(adev))
                 return true;
 
         return acpi_bay_match(handle);
@@ -1989,7 +1987,7 @@ static void acpi_scan_init_hotplug(struct acpi_device *adev)
 {
         struct acpi_hardware_id *hwid;
 
-        if (acpi_dock_match(adev->handle) || is_ejectable_bay(adev->handle)) {
+        if (acpi_dock_match(adev->handle) || is_ejectable_bay(adev)) {
                 acpi_dock_add(adev);
                 return;
         }