disable FB

hc

2024-01-04 1543e317f1da31b75942316931e8f491a8920811

 kernel/drivers/acpi/acpica/nsinit.c
..
..
@@ -3,7 +3,7 @@
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  *
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  * Module Name: nsinit - namespace initialization
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  *
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- * Copyright (C) 2000 - 2018, Intel Corp.
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+ * Copyright (C) 2000 - 2020, Intel Corp.
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  *
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  *****************************************************************************/
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9
 
..
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@@ -55,14 +55,19 @@
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 	ACPI_DEBUG_PRINT((ACPI_DB_DISPATCH,
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 			  "**** Starting initialization of namespace objects ****\n"));
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 	ACPI_DEBUG_PRINT_RAW((ACPI_DB_INIT,
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-			      "Completing Region/Field/Buffer/Package initialization:\n"));
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+			      "Final data object initialization: "));
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-	/* Set all init info to zero */
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+	/* Clear the info block */
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 	memset(&info, 0, sizeof(struct acpi_init_walk_info));
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 	/* Walk entire namespace from the supplied root */
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+	/*
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+	 * TBD: will become ACPI_TYPE_PACKAGE as this type object
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+	 * is now the only one that supports deferred initialization
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+	 * (forward references).
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+	 */
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 	status = acpi_walk_namespace(ACPI_TYPE_ANY, ACPI_ROOT_OBJECT,
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 				     ACPI_UINT32_MAX, acpi_ns_init_one_object,
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 				     NULL, &info, NULL);
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@@ -71,13 +76,8 @@
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 	}
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 	ACPI_DEBUG_PRINT_RAW((ACPI_DB_INIT,
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-			      "    Initialized %u/%u Regions %u/%u Fields %u/%u "
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-			      "Buffers %u/%u Packages (%u nodes)\n",
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-			      info.op_region_init, info.op_region_count,
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-			      info.field_init, info.field_count,
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-			      info.buffer_init, info.buffer_count,
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-			      info.package_init, info.package_count,
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-			      info.object_count));
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+			      "Namespace contains %u (0x%X) objects\n",
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+			      info.object_count, info.object_count));
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 	ACPI_DEBUG_PRINT((ACPI_DB_DISPATCH,
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 			  "%u Control Methods found\n%u Op Regions found\n",
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@@ -382,32 +382,16 @@
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 	acpi_ex_enter_interpreter();
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383
 
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 	/*
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-	 * Each of these types can contain executable AML code within the
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-	 * declaration.
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+	 * Only initialization of Package objects can be deferred, in order
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+	 * to support forward references.
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 	 */
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 	switch (type) {
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-	case ACPI_TYPE_REGION:
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-
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-		info->op_region_init++;
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-		status = acpi_ds_get_region_arguments(obj_desc);
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-		break;
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-
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-	case ACPI_TYPE_BUFFER_FIELD:
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-
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-		info->field_init++;
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-		status = acpi_ds_get_buffer_field_arguments(obj_desc);
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-		break;
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-
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 	case ACPI_TYPE_LOCAL_BANK_FIELD:
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+
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+		/* TBD: bank_fields do not require deferred init, remove this code */
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 		info->field_init++;
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 		status = acpi_ds_get_bank_field_arguments(obj_desc);
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-		break;
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-
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-	case ACPI_TYPE_BUFFER:
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-
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-		info->buffer_init++;
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-		status = acpi_ds_get_buffer_arguments(obj_desc);
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 		break;
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 	case ACPI_TYPE_PACKAGE:
..
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@@ -421,8 +405,13 @@
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405
 
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 	default:
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-		/* No other types can get here */
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+		/* No other types should get here */
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+		status = AE_TYPE;
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+		ACPI_EXCEPTION((AE_INFO, status,
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+				"Opcode is not deferred [%4.4s] (%s)",
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+				acpi_ut_get_node_name(node),
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+				acpi_ut_get_type_name(type)));
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 		break;
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 	}
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@@ -478,7 +467,7 @@
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 	/* We are only looking for methods named _INI */
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-	if (!ACPI_COMPARE_NAME(node->name.ascii, METHOD_NAME__INI)) {
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+	if (!ACPI_COMPARE_NAMESEG(node->name.ascii, METHOD_NAME__INI)) {
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 		return (AE_OK);
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 	}
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@@ -641,7 +630,7 @@
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 	 * Note: We know there is an _INI within this subtree, but it may not be
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 	 * under this particular device, it may be lower in the branch.
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 	 */
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-	if (!ACPI_COMPARE_NAME(device_node->name.ascii, "_SB_") ||
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+	if (!ACPI_COMPARE_NAMESEG(device_node->name.ascii, "_SB_") ||
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 	    device_node->parent != acpi_gbl_root_node) {
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 		ACPI_DEBUG_EXEC(acpi_ut_display_init_pathname
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 				(ACPI_TYPE_METHOD, device_node,