ACPICA: Fixes for Unload and DDBHandles (bc7a36ab) · Commits · e / devices / android_kernel_oneplus_sm7250

drivers/acpi/executer/exdump.c

+19 −8

Original line number	Diff line number	Diff line
		@@ -895,14 +895,25 @@ static void acpi_ex_dump_reference_obj(union acpi_operand_object *obj_desc)
		} else if (obj_desc->reference.object) {
		if (ACPI_GET_DESCRIPTOR_TYPE(obj_desc) ==
		ACPI_DESC_TYPE_OPERAND) {
		acpi_os_printf(" Target: %p [%s]\n",
		obj_desc->reference.object,
		acpi_os_printf(" Target: %p",
		obj_desc->reference.object);
		if (obj_desc->reference.opcode == AML_LOAD_OP) {
		/*
		* For DDBHandle reference,
		* obj_desc->Reference.Object is the table index
		*/
		acpi_os_printf(" [DDBHandle]\n");
		} else {
		acpi_os_printf(" [%s]\n",
		acpi_ut_get_type_name(((union
		acpi_operand_object
		*)obj_desc->
		*)
		obj_desc->
		reference.
		object)->common.
		object)->
		common.
		type));
		}
		} else {
		acpi_os_printf(" Target: %p\n",
		obj_desc->reference.object);

drivers/acpi/executer/exresolv.c

+9 −4

Original line number	Diff line number	Diff line
		@@ -382,10 +382,10 @@ acpi_ex_resolve_multiple(struct acpi_walk_state *walk_state,
		}

		/*
		* For reference objects created via the ref_of or Index operators,
		* we need to get to the base object (as per the ACPI specification
		* of the object_type and size_of operators). This means traversing
		* the list of possibly many nested references.
		* For reference objects created via the ref_of, Index, or Load/load_table
		* operators, we need to get to the base object (as per the ACPI
		* specification of the object_type and size_of operators). This means
		* traversing the list of possibly many nested references.
		*/
		while (ACPI_GET_OBJECT_TYPE(obj_desc) == ACPI_TYPE_LOCAL_REFERENCE) {
		switch (obj_desc->reference.opcode) {
		@@ -455,6 +455,11 @@ acpi_ex_resolve_multiple(struct acpi_walk_state *walk_state,
		}
		break;

		case AML_LOAD_OP:

		type = ACPI_TYPE_DDB_HANDLE;
		goto exit;

		case AML_LOCAL_OP:
		case AML_ARG_OP:

drivers/acpi/executer/exstore.c

+18 −5

Original line number	Diff line number	Diff line
		@@ -434,12 +434,25 @@ acpi_ex_store_object_to_index(union acpi_operand_object *source_desc,
		*/
		obj_desc = *(index_desc->reference.where);

		if (ACPI_GET_OBJECT_TYPE(source_desc) ==
		ACPI_TYPE_LOCAL_REFERENCE
		&& source_desc->reference.opcode == AML_LOAD_OP) {

		/* This is a DDBHandle, just add a reference to it */

		acpi_ut_add_reference(source_desc);
		new_desc = source_desc;
		} else {
		/* Normal object, copy it */

		status =
		acpi_ut_copy_iobject_to_iobject(source_desc, &new_desc,
		acpi_ut_copy_iobject_to_iobject(source_desc,
		&new_desc,
		walk_state);
		if (ACPI_FAILURE(status)) {
		return_ACPI_STATUS(status);
		}
		}

		if (obj_desc) {

drivers/acpi/parser/psargs.c

+34 −3

Original line number	Diff line number	Diff line
		@@ -235,6 +235,7 @@ acpi_ps_get_next_namepath(struct acpi_walk_state *walk_state,
		union acpi_parse_object *name_op;
		union acpi_operand_object *method_desc;
		struct acpi_namespace_node *node;
		u8 *start = parser_state->aml;

		ACPI_FUNCTION_TRACE(ps_get_next_namepath);

		@@ -267,6 +268,16 @@ acpi_ps_get_next_namepath(struct acpi_walk_state *walk_state,
		*/
		if (ACPI_SUCCESS(status) &&
		possible_method_call && (node->type == ACPI_TYPE_METHOD)) {
		if (walk_state->op->common.aml_opcode == AML_UNLOAD_OP) {
		/*
		* acpi_ps_get_next_namestring has increased the AML pointer,
		* so we need to restore the saved AML pointer for method call.
		*/
		walk_state->parser_state.aml = start;
		walk_state->arg_count = 1;
		acpi_ps_init_op(arg, AML_INT_METHODCALL_OP);
		return_ACPI_STATUS(AE_OK);
		}

		/* This name is actually a control method invocation */

		@@ -678,9 +689,29 @@ acpi_ps_get_next_arg(struct acpi_walk_state *walk_state,
		return_ACPI_STATUS(AE_NO_MEMORY);
		}

		/* To support super_name arg of Unload */

		if (walk_state->op->common.aml_opcode == AML_UNLOAD_OP) {
		status =
		acpi_ps_get_next_namepath(walk_state, parser_state,
		arg, 0);
		acpi_ps_get_next_namepath(walk_state,
		parser_state, arg,
		1);

		/*
		* If the super_name arg of Unload is a method call,
		* we have restored the AML pointer, just free this Arg
		*/
		if (arg->common.aml_opcode ==
		AML_INT_METHODCALL_OP) {
		acpi_ps_free_op(arg);
		arg = NULL;
		}
		} else {
		status =
		acpi_ps_get_next_namepath(walk_state,
		parser_state, arg,
		0);
		}
		} else {
		/* Single complex argument, nothing returned */

drivers/acpi/utilities/utcopy.c

+8 −0

Original line number	Diff line number	Diff line
		@@ -709,7 +709,15 @@ acpi_ut_copy_simple_object(union acpi_operand_object *source_desc,
		/*
		* We copied the reference object, so we now must add a reference
		* to the object pointed to by the reference
		*
		* DDBHandle reference (from Load/load_table is a special reference,
		* it's Reference.Object is the table index, so does not need to
		* increase the reference count
		*/
		if (source_desc->reference.opcode == AML_LOAD_OP) {
		break;
		}

		acpi_ut_add_reference(source_desc->reference.object);
		break;