1 files changed, 178 insertions, 173 deletions

diff --git a/drivers/acpi/executer/exconfig.c b/drivers/acpi/executer/exconfig.c
index 734b2f24af48..1ce365d651d8 100644
--- a/drivers/acpi/executer/exconfig.c
+++ b/drivers/acpi/executer/exconfig.c
@@ -41,7 +41,6 @@
  * POSSIBILITY OF SUCH DAMAGES.
  */
 
-
 #include <acpi/acpi.h>
 #include <acpi/acinterp.h>
 #include <acpi/amlcode.h>
@@ -50,18 +49,14 @@
 #include <acpi/actables.h>
 #include <acpi/acdispat.h>
 
-
 #define _COMPONENT          ACPI_EXECUTER
-	 ACPI_MODULE_NAME    ("exconfig")
+ACPI_MODULE_NAME("exconfig")
 
 /* Local prototypes */
-
 static acpi_status
-acpi_ex_add_table (
-	struct acpi_table_header        *table,
-	struct acpi_namespace_node      *parent_node,
-	union acpi_operand_object       **ddb_handle);
-
+acpi_ex_add_table(struct acpi_table_header *table,
+		  struct acpi_namespace_node *parent_node,
+		  union acpi_operand_object **ddb_handle);
 
 /*******************************************************************************
  *
@@ -79,64 +74,67 @@ acpi_ex_add_table (
  ******************************************************************************/
 
 static acpi_status
-acpi_ex_add_table (
-	struct acpi_table_header        *table,
-	struct acpi_namespace_node      *parent_node,
-	union acpi_operand_object       **ddb_handle)
+acpi_ex_add_table(struct acpi_table_header *table,
+		  struct acpi_namespace_node *parent_node,
+		  union acpi_operand_object **ddb_handle)
 {
-	acpi_status                     status;
-	struct acpi_table_desc          table_info;
-	union acpi_operand_object       *obj_desc;
-
-
-	ACPI_FUNCTION_TRACE ("ex_add_table");
+	acpi_status status;
+	struct acpi_table_desc table_info;
+	union acpi_operand_object *obj_desc;
 
+	ACPI_FUNCTION_TRACE("ex_add_table");
 
 	/* Create an object to be the table handle */
 
-	obj_desc = acpi_ut_create_internal_object (ACPI_TYPE_LOCAL_REFERENCE);
+	obj_desc = acpi_ut_create_internal_object(ACPI_TYPE_LOCAL_REFERENCE);
 	if (!obj_desc) {
-		return_ACPI_STATUS (AE_NO_MEMORY);
+		return_ACPI_STATUS(AE_NO_MEMORY);
 	}
 
+	/* Init the table handle */
+
+	obj_desc->reference.opcode = AML_LOAD_OP;
+	*ddb_handle = obj_desc;
+
 	/* Install the new table into the local data structures */
 
-	ACPI_MEMSET (&table_info, 0, sizeof (struct acpi_table_desc));
+	ACPI_MEMSET(&table_info, 0, sizeof(struct acpi_table_desc));
 
-	table_info.type      = ACPI_TABLE_SSDT;
-	table_info.pointer   = table;
-	table_info.length    = (acpi_size) table->length;
+	table_info.type = ACPI_TABLE_SSDT;
+	table_info.pointer = table;
+	table_info.length = (acpi_size) table->length;
 	table_info.allocation = ACPI_MEM_ALLOCATED;
 
-	status = acpi_tb_install_table (&table_info);
-	if (ACPI_FAILURE (status)) {
+	status = acpi_tb_install_table(&table_info);
+	obj_desc->reference.object = table_info.installed_desc;
+
+	if (ACPI_FAILURE(status)) {
+		if (status == AE_ALREADY_EXISTS) {
+			/* Table already exists, just return the handle */
+
+			return_ACPI_STATUS(AE_OK);
+		}
 		goto cleanup;
 	}
 
 	/* Add the table to the namespace */
 
-	status = acpi_ns_load_table (table_info.installed_desc, parent_node);
-	if (ACPI_FAILURE (status)) {
+	status = acpi_ns_load_table(table_info.installed_desc, parent_node);
+	if (ACPI_FAILURE(status)) {
 		/* Uninstall table on error */
 
-		(void) acpi_tb_uninstall_table (table_info.installed_desc);
+		(void)acpi_tb_uninstall_table(table_info.installed_desc);
 		goto cleanup;
 	}
 
-	/* Init the table handle */
+	return_ACPI_STATUS(AE_OK);
 
-	obj_desc->reference.opcode = AML_LOAD_OP;
-	obj_desc->reference.object = table_info.installed_desc;
-	*ddb_handle = obj_desc;
-	return_ACPI_STATUS (AE_OK);
-
-
-cleanup:
-	acpi_ut_remove_reference (obj_desc);
-	return_ACPI_STATUS (status);
+      cleanup:
+	acpi_ut_remove_reference(obj_desc);
+	*ddb_handle = NULL;
+	return_ACPI_STATUS(status);
 }
 
-
 /*******************************************************************************
  *
  * FUNCTION:    acpi_ex_load_table_op
@@ -151,56 +149,53 @@ cleanup:
  ******************************************************************************/
 
 acpi_status
-acpi_ex_load_table_op (
-	struct acpi_walk_state          *walk_state,
-	union acpi_operand_object       **return_desc)
+acpi_ex_load_table_op(struct acpi_walk_state *walk_state,
+		      union acpi_operand_object **return_desc)
 {
-	acpi_status                     status;
-	union acpi_operand_object       **operand = &walk_state->operands[0];
-	struct acpi_table_header        *table;
-	struct acpi_namespace_node      *parent_node;
-	struct acpi_namespace_node      *start_node;
-	struct acpi_namespace_node      *parameter_node = NULL;
-	union acpi_operand_object       *ddb_handle;
-
-
-	ACPI_FUNCTION_TRACE ("ex_load_table_op");
+	acpi_status status;
+	union acpi_operand_object **operand = &walk_state->operands[0];
+	struct acpi_table_header *table;
+	struct acpi_namespace_node *parent_node;
+	struct acpi_namespace_node *start_node;
+	struct acpi_namespace_node *parameter_node = NULL;
+	union acpi_operand_object *ddb_handle;
 
+	ACPI_FUNCTION_TRACE("ex_load_table_op");
 
 #if 0
 	/*
 	 * Make sure that the signature does not match one of the tables that
 	 * is already loaded.
 	 */
-	status = acpi_tb_match_signature (operand[0]->string.pointer, NULL);
+	status = acpi_tb_match_signature(operand[0]->string.pointer, NULL);
 	if (status == AE_OK) {
 		/* Signature matched -- don't allow override */
 
-		return_ACPI_STATUS (AE_ALREADY_EXISTS);
+		return_ACPI_STATUS(AE_ALREADY_EXISTS);
 	}
 #endif
 
 	/* Find the ACPI table */
 
-	status = acpi_tb_find_table (operand[0]->string.pointer,
-			   operand[1]->string.pointer,
-			   operand[2]->string.pointer, &table);
-	if (ACPI_FAILURE (status)) {
+	status = acpi_tb_find_table(operand[0]->string.pointer,
+				    operand[1]->string.pointer,
+				    operand[2]->string.pointer, &table);
+	if (ACPI_FAILURE(status)) {
 		if (status != AE_NOT_FOUND) {
-			return_ACPI_STATUS (status);
+			return_ACPI_STATUS(status);
 		}
 
 		/* Table not found, return an Integer=0 and AE_OK */
 
-		ddb_handle = acpi_ut_create_internal_object (ACPI_TYPE_INTEGER);
+		ddb_handle = acpi_ut_create_internal_object(ACPI_TYPE_INTEGER);
 		if (!ddb_handle) {
-			return_ACPI_STATUS (AE_NO_MEMORY);
+			return_ACPI_STATUS(AE_NO_MEMORY);
 		}
 
 		ddb_handle->integer.value = 0;
 		*return_desc = ddb_handle;
 
-		return_ACPI_STATUS (AE_OK);
+		return_ACPI_STATUS(AE_OK);
 	}
 
 	/* Default nodes */
@@ -215,10 +210,12 @@ acpi_ex_load_table_op (
 		 * Find the node referenced by the root_path_string. This is the
 		 * location within the namespace where the table will be loaded.
 		 */
-		status = acpi_ns_get_node_by_path (operand[3]->string.pointer, start_node,
-				   ACPI_NS_SEARCH_PARENT, &parent_node);
-		if (ACPI_FAILURE (status)) {
-			return_ACPI_STATUS (status);
+		status =
+		    acpi_ns_get_node_by_path(operand[3]->string.pointer,
+					     start_node, ACPI_NS_SEARCH_PARENT,
+					     &parent_node);
+		if (ACPI_FAILURE(status)) {
+			return_ACPI_STATUS(status);
 		}
 	}
 
@@ -226,7 +223,7 @@ acpi_ex_load_table_op (
 
 	if (operand[4]->string.length > 0) {
 		if ((operand[4]->string.pointer[0] != '\\') &&
-			(operand[4]->string.pointer[0] != '^')) {
+		    (operand[4]->string.pointer[0] != '^')) {
 			/*
 			 * Path is not absolute, so it will be relative to the node
 			 * referenced by the root_path_string (or the NS root if omitted)
@@ -236,18 +233,20 @@ acpi_ex_load_table_op (
 
 		/* Find the node referenced by the parameter_path_string */
 
-		status = acpi_ns_get_node_by_path (operand[4]->string.pointer, start_node,
-				 ACPI_NS_SEARCH_PARENT, &parameter_node);
-		if (ACPI_FAILURE (status)) {
-			return_ACPI_STATUS (status);
+		status =
+		    acpi_ns_get_node_by_path(operand[4]->string.pointer,
+					     start_node, ACPI_NS_SEARCH_PARENT,
+					     &parameter_node);
+		if (ACPI_FAILURE(status)) {
+			return_ACPI_STATUS(status);
 		}
 	}
 
 	/* Load the table into the namespace */
 
-	status = acpi_ex_add_table (table, parent_node, &ddb_handle);
-	if (ACPI_FAILURE (status)) {
-		return_ACPI_STATUS (status);
+	status = acpi_ex_add_table(table, parent_node, &ddb_handle);
+	if (ACPI_FAILURE(status)) {
+		return_ACPI_STATUS(status);
 	}
 
 	/* Parameter Data (optional) */
@@ -255,20 +254,20 @@ acpi_ex_load_table_op (
 	if (parameter_node) {
 		/* Store the parameter data into the optional parameter object */
 
-		status = acpi_ex_store (operand[5],
-				 ACPI_CAST_PTR (union acpi_operand_object, parameter_node),
-				 walk_state);
-		if (ACPI_FAILURE (status)) {
-			(void) acpi_ex_unload_table (ddb_handle);
-			return_ACPI_STATUS (status);
+		status = acpi_ex_store(operand[5],
+				       ACPI_CAST_PTR(union acpi_operand_object,
+						     parameter_node),
+				       walk_state);
+		if (ACPI_FAILURE(status)) {
+			(void)acpi_ex_unload_table(ddb_handle);
+			return_ACPI_STATUS(status);
 		}
 	}
 
 	*return_desc = ddb_handle;
-	return_ACPI_STATUS  (status);
+	return_ACPI_STATUS(status);
 }
 
-
 /*******************************************************************************
  *
  * FUNCTION:    acpi_ex_load_op
@@ -285,38 +284,37 @@ acpi_ex_load_table_op (
  ******************************************************************************/
 
 acpi_status
-acpi_ex_load_op (
-	union acpi_operand_object       *obj_desc,
-	union acpi_operand_object       *target,
-	struct acpi_walk_state          *walk_state)
+acpi_ex_load_op(union acpi_operand_object *obj_desc,
+		union acpi_operand_object *target,
+		struct acpi_walk_state *walk_state)
 {
-	acpi_status                     status;
-	union acpi_operand_object       *ddb_handle;
-	union acpi_operand_object       *buffer_desc = NULL;
-	struct acpi_table_header        *table_ptr = NULL;
-	acpi_physical_address           address;
-	struct acpi_table_header        table_header;
-	u32                             i;
-
-	ACPI_FUNCTION_TRACE ("ex_load_op");
+	acpi_status status;
+	union acpi_operand_object *ddb_handle;
+	union acpi_operand_object *buffer_desc = NULL;
+	struct acpi_table_header *table_ptr = NULL;
+	acpi_physical_address address;
+	struct acpi_table_header table_header;
+	u32 i;
 
+	ACPI_FUNCTION_TRACE("ex_load_op");
 
 	/* Object can be either an op_region or a Field */
 
-	switch (ACPI_GET_OBJECT_TYPE (obj_desc)) {
+	switch (ACPI_GET_OBJECT_TYPE(obj_desc)) {
 	case ACPI_TYPE_REGION:
 
-		ACPI_DEBUG_PRINT ((ACPI_DB_EXEC, "Load from Region %p %s\n",
-			obj_desc, acpi_ut_get_object_type_name (obj_desc)));
+		ACPI_DEBUG_PRINT((ACPI_DB_EXEC, "Load from Region %p %s\n",
+				  obj_desc,
+				  acpi_ut_get_object_type_name(obj_desc)));
 
 		/*
 		 * If the Region Address and Length have not been previously evaluated,
 		 * evaluate them now and save the results.
 		 */
 		if (!(obj_desc->common.flags & AOPOBJ_DATA_VALID)) {
-			status = acpi_ds_get_region_arguments (obj_desc);
-			if (ACPI_FAILURE (status)) {
-				return_ACPI_STATUS (status);
+			status = acpi_ds_get_region_arguments(obj_desc);
+			if (ACPI_FAILURE(status)) {
+				return_ACPI_STATUS(status);
 			}
 		}
 
@@ -328,116 +326,127 @@ acpi_ex_load_op (
 
 		table_header.length = 0;
 		for (i = 0; i < 8; i++) {
-			status = acpi_ev_address_space_dispatch (obj_desc, ACPI_READ,
-					   (acpi_physical_address) (i + address), 8,
-					   ((u8 *) &table_header) + i);
-			if (ACPI_FAILURE (status)) {
-				return_ACPI_STATUS (status);
+			status =
+			    acpi_ev_address_space_dispatch(obj_desc, ACPI_READ,
+							   (acpi_physical_address)
+							   (i + address), 8,
+							   ((u8 *) &
+							    table_header) + i);
+			if (ACPI_FAILURE(status)) {
+				return_ACPI_STATUS(status);
 			}
 		}
 
 		/* Sanity check the table length */
 
-		if (table_header.length < sizeof (struct acpi_table_header)) {
-			return_ACPI_STATUS (AE_BAD_HEADER);
+		if (table_header.length < sizeof(struct acpi_table_header)) {
+			return_ACPI_STATUS(AE_BAD_HEADER);
 		}
 
 		/* Allocate a buffer for the entire table */
 
-		table_ptr = ACPI_MEM_ALLOCATE (table_header.length);
+		table_ptr = ACPI_MEM_ALLOCATE(table_header.length);
 		if (!table_ptr) {
-			return_ACPI_STATUS (AE_NO_MEMORY);
+			return_ACPI_STATUS(AE_NO_MEMORY);
 		}
 
 		/* Get the entire table from the op region */
 
 		for (i = 0; i < table_header.length; i++) {
-			status = acpi_ev_address_space_dispatch (obj_desc, ACPI_READ,
-					   (acpi_physical_address) (i + address), 8,
-					   ((u8 *) table_ptr + i));
-			if (ACPI_FAILURE (status)) {
+			status =
+			    acpi_ev_address_space_dispatch(obj_desc, ACPI_READ,
+							   (acpi_physical_address)
+							   (i + address), 8,
+							   ((u8 *) table_ptr +
+							    i));
+			if (ACPI_FAILURE(status)) {
 				goto cleanup;
 			}
 		}
 		break;
 
-
 	case ACPI_TYPE_LOCAL_REGION_FIELD:
 	case ACPI_TYPE_LOCAL_BANK_FIELD:
 	case ACPI_TYPE_LOCAL_INDEX_FIELD:
 
-		ACPI_DEBUG_PRINT ((ACPI_DB_EXEC, "Load from Field %p %s\n",
-			obj_desc, acpi_ut_get_object_type_name (obj_desc)));
+		ACPI_DEBUG_PRINT((ACPI_DB_EXEC, "Load from Field %p %s\n",
+				  obj_desc,
+				  acpi_ut_get_object_type_name(obj_desc)));
 
 		/*
 		 * The length of the field must be at least as large as the table.
 		 * Read the entire field and thus the entire table.  Buffer is
 		 * allocated during the read.
 		 */
-		status = acpi_ex_read_data_from_field (walk_state, obj_desc, &buffer_desc);
-		if (ACPI_FAILURE (status)) {
-			goto cleanup;
+		status =
+		    acpi_ex_read_data_from_field(walk_state, obj_desc,
+						 &buffer_desc);
+		if (ACPI_FAILURE(status)) {
+			return_ACPI_STATUS(status);
 		}
 
-		table_ptr = ACPI_CAST_PTR (struct acpi_table_header,
-				  buffer_desc->buffer.pointer);
+		table_ptr = ACPI_CAST_PTR(struct acpi_table_header,
+					  buffer_desc->buffer.pointer);
 
-		 /* Sanity check the table length */
+		/* All done with the buffer_desc, delete it */
 
-		if (table_ptr->length < sizeof (struct acpi_table_header)) {
-			return_ACPI_STATUS (AE_BAD_HEADER);
+		buffer_desc->buffer.pointer = NULL;
+		acpi_ut_remove_reference(buffer_desc);
+
+		/* Sanity check the table length */
+
+		if (table_ptr->length < sizeof(struct acpi_table_header)) {
+			status = AE_BAD_HEADER;
+			goto cleanup;
 		}
 		break;
 
-
 	default:
-		return_ACPI_STATUS (AE_AML_OPERAND_TYPE);
+		return_ACPI_STATUS(AE_AML_OPERAND_TYPE);
 	}
 
 	/* The table must be either an SSDT or a PSDT */
 
-	if ((!ACPI_STRNCMP (table_ptr->signature,
-			  acpi_gbl_table_data[ACPI_TABLE_PSDT].signature,
-			  acpi_gbl_table_data[ACPI_TABLE_PSDT].sig_length)) &&
-		(!ACPI_STRNCMP (table_ptr->signature,
-				 acpi_gbl_table_data[ACPI_TABLE_SSDT].signature,
-				 acpi_gbl_table_data[ACPI_TABLE_SSDT].sig_length))) {
-		ACPI_DEBUG_PRINT ((ACPI_DB_ERROR,
-			"Table has invalid signature [%4.4s], must be SSDT or PSDT\n",
-			table_ptr->signature));
+	if ((!ACPI_STRNCMP(table_ptr->signature,
+			   acpi_gbl_table_data[ACPI_TABLE_PSDT].signature,
+			   acpi_gbl_table_data[ACPI_TABLE_PSDT].sig_length)) &&
+	    (!ACPI_STRNCMP(table_ptr->signature,
+			   acpi_gbl_table_data[ACPI_TABLE_SSDT].signature,
+			   acpi_gbl_table_data[ACPI_TABLE_SSDT].sig_length))) {
+		ACPI_DEBUG_PRINT((ACPI_DB_ERROR,
+				  "Table has invalid signature [%4.4s], must be SSDT or PSDT\n",
+				  table_ptr->signature));
 		status = AE_BAD_SIGNATURE;
 		goto cleanup;
 	}
 
 	/* Install the new table into the local data structures */
 
-	status = acpi_ex_add_table (table_ptr, acpi_gbl_root_node, &ddb_handle);
-	if (ACPI_FAILURE (status)) {
-		goto cleanup;
-	}
-
-	/* Store the ddb_handle into the Target operand */
+	status = acpi_ex_add_table(table_ptr, acpi_gbl_root_node, &ddb_handle);
+	if (ACPI_FAILURE(status)) {
+		/* On error, table_ptr was deallocated above */
 
-	status = acpi_ex_store (ddb_handle, target, walk_state);
-	if (ACPI_FAILURE (status)) {
-		(void) acpi_ex_unload_table (ddb_handle);
+		return_ACPI_STATUS(status);
 	}
 
-	return_ACPI_STATUS (status);
+	/* Store the ddb_handle into the Target operand */
 
+	status = acpi_ex_store(ddb_handle, target, walk_state);
+	if (ACPI_FAILURE(status)) {
+		(void)acpi_ex_unload_table(ddb_handle);
 
-cleanup:
+		/* table_ptr was deallocated above */
 
-	if (buffer_desc) {
-		acpi_ut_remove_reference (buffer_desc);
+		return_ACPI_STATUS(status);
 	}
-	else {
-		ACPI_MEM_FREE (table_ptr);
+
+      cleanup:
+	if (ACPI_FAILURE(status)) {
+		ACPI_MEM_FREE(table_ptr);
 	}
-	return_ACPI_STATUS (status);
+	return_ACPI_STATUS(status);
 }
 
-
 /*******************************************************************************
  *
  * FUNCTION:    acpi_ex_unload_table
@@ -450,17 +459,13 @@ cleanup:
  *
  ******************************************************************************/
 
-acpi_status
-acpi_ex_unload_table (
-	union acpi_operand_object       *ddb_handle)
+acpi_status acpi_ex_unload_table(union acpi_operand_object *ddb_handle)
 {
-	acpi_status                     status = AE_OK;
-	union acpi_operand_object       *table_desc = ddb_handle;
-	struct acpi_table_desc          *table_info;
-
-
-	ACPI_FUNCTION_TRACE ("ex_unload_table");
+	acpi_status status = AE_OK;
+	union acpi_operand_object *table_desc = ddb_handle;
+	struct acpi_table_desc *table_info;
 
+	ACPI_FUNCTION_TRACE("ex_unload_table");
 
 	/*
 	 * Validate the handle
@@ -469,28 +474,28 @@ acpi_ex_unload_table (
 	 * validated here.
 	 */
 	if ((!ddb_handle) ||
-		(ACPI_GET_DESCRIPTOR_TYPE (ddb_handle) != ACPI_DESC_TYPE_OPERAND) ||
-		(ACPI_GET_OBJECT_TYPE (ddb_handle) != ACPI_TYPE_LOCAL_REFERENCE)) {
-		return_ACPI_STATUS (AE_BAD_PARAMETER);
+	    (ACPI_GET_DESCRIPTOR_TYPE(ddb_handle) != ACPI_DESC_TYPE_OPERAND) ||
+	    (ACPI_GET_OBJECT_TYPE(ddb_handle) != ACPI_TYPE_LOCAL_REFERENCE)) {
+		return_ACPI_STATUS(AE_BAD_PARAMETER);
 	}
 
 	/* Get the actual table descriptor from the ddb_handle */
 
-	table_info = (struct acpi_table_desc *) table_desc->reference.object;
+	table_info = (struct acpi_table_desc *)table_desc->reference.object;
 
 	/*
 	 * Delete the entire namespace under this table Node
 	 * (Offset contains the table_id)
 	 */
-	acpi_ns_delete_namespace_by_owner (table_info->table_id);
+	acpi_ns_delete_namespace_by_owner(table_info->owner_id);
+	acpi_ut_release_owner_id(&table_info->owner_id);
 
 	/* Delete the table itself */
 
-	(void) acpi_tb_uninstall_table (table_info->installed_desc);
+	(void)acpi_tb_uninstall_table(table_info->installed_desc);
 
 	/* Delete the table descriptor (ddb_handle) */
 
-	acpi_ut_remove_reference (table_desc);
-	return_ACPI_STATUS (status);
+	acpi_ut_remove_reference(table_desc);
+	return_ACPI_STATUS(status);
 }
-