Merge back earlier ACPICA changes for 4.21. (3e407c16) · Commits · e / devices / android_kernel_fairphone_FP5

drivers/acpi/acpica/acnamesp.h

+1 −0

Original line number	Diff line number	Diff line
		@@ -34,6 +34,7 @@
		#define ACPI_NS_TEMPORARY 0x0040
		#define ACPI_NS_OVERRIDE_IF_FOUND 0x0080
		#define ACPI_NS_EARLY_INIT 0x0100
		#define ACPI_NS_PREFIX_MUST_EXIST 0x0200

		/* Flags for acpi_ns_walk_namespace */

drivers/acpi/acpica/dbxface.c

+74 −44

Original line number	Diff line number	Diff line
		@@ -24,6 +24,13 @@ acpi_db_start_command(struct acpi_walk_state *walk_state,
		void acpi_db_method_end(struct acpi_walk_state *walk_state);
		#endif

		#ifdef ACPI_DISASSEMBLER
		static union acpi_parse_object *acpi_db_get_display_op(struct acpi_walk_state
		*walk_state,
		union acpi_parse_object
		*op);
		#endif

		/*******************************************************************************
		*
		* FUNCTION: acpi_db_start_command
		@@ -113,6 +120,70 @@ void acpi_db_signal_break_point(struct acpi_walk_state *walk_state)
		acpi_os_printf("break Executed AML BreakPoint opcode\n");
		}

		#ifdef ACPI_DISASSEMBLER
		/*******************************************************************************
		*
		* FUNCTION: acpi_db_get_display_op
		*
		* PARAMETERS: walk_state - Current walk
		* op - Current executing op (from aml interpreter)
		*
		* RETURN: Opcode to display
		*
		* DESCRIPTION: Find the opcode to display during single stepping
		*
		******************************************************************************/

		static union acpi_parse_object *acpi_db_get_display_op(struct acpi_walk_state
		*walk_state,
		union acpi_parse_object
		*op)
		{
		union acpi_parse_object *display_op;
		union acpi_parse_object *parent_op;

		display_op = op;
		parent_op = op->common.parent;
		if (parent_op) {
		if ((walk_state->control_state) &&
		(walk_state->control_state->common.state ==
		ACPI_CONTROL_PREDICATE_EXECUTING)) {
		/*
		* We are executing the predicate of an IF or WHILE statement
		* Search upwards for the containing IF or WHILE so that the
		* entire predicate can be displayed.
		*/
		while (parent_op) {
		if ((parent_op->common.aml_opcode == AML_IF_OP)
		\|\| (parent_op->common.aml_opcode ==
		AML_WHILE_OP)) {
		display_op = parent_op;
		break;
		}
		parent_op = parent_op->common.parent;
		}
		} else {
		while (parent_op) {
		if ((parent_op->common.aml_opcode == AML_IF_OP)
		\|\| (parent_op->common.aml_opcode ==
		AML_ELSE_OP)
		\|\| (parent_op->common.aml_opcode ==
		AML_SCOPE_OP)
		\|\| (parent_op->common.aml_opcode ==
		AML_METHOD_OP)
		\|\| (parent_op->common.aml_opcode ==
		AML_WHILE_OP)) {
		break;
		}
		display_op = parent_op;
		parent_op = parent_op->common.parent;
		}
		}
		}
		return display_op;
		}
		#endif

		/*******************************************************************************
		*
		* FUNCTION: acpi_db_single_step
		@@ -134,8 +205,6 @@ acpi_db_single_step(struct acpi_walk_state *walk_state,
		union acpi_parse_object *next;
		acpi_status status = AE_OK;
		u32 original_debug_level;
		union acpi_parse_object *display_op;
		union acpi_parse_object *parent_op;
		u32 aml_offset;

		ACPI_FUNCTION_ENTRY();
		@@ -222,51 +291,12 @@ acpi_db_single_step(struct acpi_walk_state *walk_state,
		next = op->common.next;
		op->common.next = NULL;

		display_op = op;
		parent_op = op->common.parent;
		if (parent_op) {
		if ((walk_state->control_state) &&
		(walk_state->control_state->common.state ==
		ACPI_CONTROL_PREDICATE_EXECUTING)) {
		/*
		* We are executing the predicate of an IF or WHILE statement
		* Search upwards for the containing IF or WHILE so that the
		* entire predicate can be displayed.
		*/
		while (parent_op) {
		if ((parent_op->common.aml_opcode ==
		AML_IF_OP)
		\|\| (parent_op->common.aml_opcode ==
		AML_WHILE_OP)) {
		display_op = parent_op;
		break;
		}
		parent_op = parent_op->common.parent;
		}
		} else {
		while (parent_op) {
		if ((parent_op->common.aml_opcode ==
		AML_IF_OP)
		\|\| (parent_op->common.aml_opcode ==
		AML_ELSE_OP)
		\|\| (parent_op->common.aml_opcode ==
		AML_SCOPE_OP)
		\|\| (parent_op->common.aml_opcode ==
		AML_METHOD_OP)
		\|\| (parent_op->common.aml_opcode ==
		AML_WHILE_OP)) {
		break;
		}
		display_op = parent_op;
		parent_op = parent_op->common.parent;
		}
		}
		}

		/* Now we can disassemble and display it */

		#ifdef ACPI_DISASSEMBLER
		acpi_dm_disassemble(walk_state, display_op, ACPI_UINT32_MAX);
		acpi_dm_disassemble(walk_state,
		acpi_db_get_display_op(walk_state, op),
		ACPI_UINT32_MAX);
		#else
		/*
		* The AML Disassembler is not configured - at least we can

drivers/acpi/acpica/dswload2.c

+8 −0

Original line number	Diff line number	Diff line
		@@ -296,6 +296,14 @@ acpi_ds_load2_begin_op(struct acpi_walk_state *walk_state,
		}
		#endif

		/*
		* For name creation opcodes, the full namepath prefix must
		* exist, except for the final (new) nameseg.
		*/
		if (walk_state->op_info->flags & AML_NAMED) {
		flags \|= ACPI_NS_PREFIX_MUST_EXIST;
		}

		/* Add new entry or lookup existing entry */

		status =

drivers/acpi/acpica/nsaccess.c

+21 −2

Original line number	Diff line number	Diff line
		@@ -267,6 +267,7 @@ acpi_ns_lookup(union acpi_generic_state *scope_info,
		acpi_object_type this_search_type;
		u32 search_parent_flag = ACPI_NS_SEARCH_PARENT;
		u32 local_flags;
		acpi_interpreter_mode local_interpreter_mode;

		ACPI_FUNCTION_TRACE(ns_lookup);

		@@ -506,6 +507,7 @@ acpi_ns_lookup(union acpi_generic_state *scope_info,
		*/
		this_search_type = ACPI_TYPE_ANY;
		current_node = this_node;

		while (num_segments && current_node) {
		num_segments--;
		if (!num_segments) {
		@@ -536,6 +538,16 @@ acpi_ns_lookup(union acpi_generic_state *scope_info,
		}
		}

		/* Handle opcodes that create a new name_seg via a full name_path */

		local_interpreter_mode = interpreter_mode;
		if ((flags & ACPI_NS_PREFIX_MUST_EXIST) && (num_segments > 0)) {

		/* Every element of the path must exist (except for the final name_seg) */

		local_interpreter_mode = ACPI_IMODE_EXECUTE;
		}

		/* Extract one ACPI name from the front of the pathname */

		ACPI_MOVE_32_TO_32(&simple_name, path);
		@@ -544,12 +556,19 @@ acpi_ns_lookup(union acpi_generic_state *scope_info,

		status =
		acpi_ns_search_and_enter(simple_name, walk_state,
		current_node, interpreter_mode,
		current_node,
		local_interpreter_mode,
		this_search_type, local_flags,
		&this_node);
		if (ACPI_FAILURE(status)) {
		if (status == AE_NOT_FOUND) {

		#if !defined ACPI_ASL_COMPILER /* Note: iASL reports this error by itself, not needed here */
		if (flags & ACPI_NS_PREFIX_MUST_EXIST) {
		acpi_os_printf(ACPI_MSG_BIOS_ERROR
		"Object does not exist: %4.4s\n",
		&simple_name);
		}
		#endif
		/* Name not found in ACPI namespace */

		ACPI_DEBUG_PRINT((ACPI_DB_NAMES,

drivers/acpi/acpica/psloop.c

+3 −5

Original line number	Diff line number	Diff line
		@@ -508,7 +508,8 @@ acpi_status acpi_ps_parse_loop(struct acpi_walk_state *walk_state)
		*/
		if ((walk_state->
		parse_flags & ACPI_PARSE_MODULE_LEVEL)
		&& status == AE_ALREADY_EXISTS) {
		&& ((status == AE_ALREADY_EXISTS)
		\|\| (status == AE_NOT_FOUND))) {
		status = AE_OK;
		}
		if (status == AE_CTRL_PARSE_CONTINUE) {
		@@ -537,10 +538,7 @@ acpi_status acpi_ps_parse_loop(struct acpi_walk_state *walk_state)
		* the scope op because the parse failure indicates that
		* the device may not exist.
		*/
		ACPI_ERROR((AE_INFO,
		"Skip parsing opcode %s",
		acpi_ps_get_opcode_name
		(walk_state->opcode)));
		ACPI_INFO(("Skipping parse of AML opcode: %s (0x%4.4X)", acpi_ps_get_opcode_name(walk_state->opcode), walk_state->opcode));

		/*
		* Determine the opcode length before skipping the opcode.