ACPI: sony-laptop.c: call acpi_get_object_info to get node info

Avoid using internal acpica structures acpi_namespace_node and acpi_operand_object
Call acpi_get_object_info to get node ascii name and method arg count

Signed-off-by: Lin Ming <ming.m.lin@intel.com>
Signed-off-by: Len Brown <len.brown@intel.com>

1 files changed, 9 insertions, 6 deletions

diff --git a/drivers/misc/sony-laptop.c b/drivers/misc/sony-laptop.c
index 571b211608d1..537959d07148 100644
--- a/drivers/misc/sony-laptop.c
+++ b/drivers/misc/sony-laptop.c
@@ -935,14 +935,17 @@ static void sony_acpi_notify(acpi_handle handle, u32 event, void *data)
 static acpi_status sony_walk_callback(acpi_handle handle, u32 level,
                                       void *context, void **return_value)
 {
-        struct acpi_namespace_node *node;
-        union acpi_operand_object *operand;
+        struct acpi_device_info *info;
+        struct acpi_buffer buffer = {ACPI_ALLOCATE_BUFFER, NULL};
 
-        node = (struct acpi_namespace_node *)handle;
-        operand = (union acpi_operand_object *)node->object;
+        if (ACPI_SUCCESS(acpi_get_object_info(handle, &buffer))) {
+                info = buffer.pointer;
 
-        printk(KERN_WARNING DRV_PFX "method: name: %4.4s, args %X\n", node->name.ascii,
-               (u32) operand->method.param_count);
+                printk(KERN_WARNING DRV_PFX "method: name: %4.4s, args %X\n",
+                        (char *)&info->name, info->param_count);
+
+                kfree(buffer.pointer);
+        }
 
         return AE_OK;
 }