[PATCH 7/8] acpi: avoid using internal acpica structures

[Lin Ming <ming.m.lin@xxxxxxxxx>]

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

Signed-off-by: Lin Ming <ming.m.lin@xxxxxxxxx>
---
 drivers/acpi/ec.c          |   13 +++++++++++--
 drivers/misc/sony-laptop.c |   15 +++++++++------
 2 files changed, 20 insertions(+), 8 deletions(-)

diff --git a/drivers/acpi/ec.c b/drivers/acpi/ec.c
index 591b4f6..2f4828f 100644
--- a/drivers/acpi/ec.c
+++ b/drivers/acpi/ec.c
@@ -754,10 +754,19 @@ static acpi_status
 acpi_ec_register_query_methods(acpi_handle handle, u32 level,
 			       void *context, void **return_value)
 {
-	struct acpi_namespace_node *node = handle;
+	char node_name[5];
+	struct acpi_buffer buffer = { sizeof(node_name), node_name };
 	struct acpi_ec *ec = context;
 	int value = 0;
-	if (sscanf(node->name.ascii, "_Q%x", &value) == 1) {
+	acpi_status status;
+
+	status = acpi_get_name(handle, ACPI_SINGLE_NAME, &buffer);
+
+	if (ACPI_FAILURE(status)) {
+		return status;
+	}
+       
+	if (sscanf(node_name, "_Q%x", &value) == 1) {
 		acpi_ec_add_query_handler(ec, value, handle, NULL, NULL);
 	}
 	return AE_OK;
diff --git a/drivers/misc/sony-laptop.c b/drivers/misc/sony-laptop.c
index 7bcb810..dd9c16f 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;
 }


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