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ACPICA: Disassembler: allow conflicting external declarations to be emitted.

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ACPICA commit 0ed9f2e2ccc112439eaa355b5952a05d6fdb7814

An external declaration is a conflicting declaration when a name has
been declared as an external and a named object within the same file.

Link: https://github.com/acpica/acpica/commit/0ed9f2e2
Signed-off-by: Erik Schmauss <erik.schmauss@intel.com>
Signed-off-by: Bob Moore <robert.moore@intel.com>
Signed-off-by: Lv Zheng <lv.zheng@intel.com>
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
This commit is contained in:
Erik Schmauss 2017-06-05 16:41:55 +08:00 committed by Rafael J. Wysocki
parent bdcf4cdbdc
commit a9d8ea79d7
2 changed files with 28 additions and 0 deletions
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1
drivers/acpi/acpica/aclocal.h
View File

@ -1181,6 +1181,7 @@ struct acpi_external_list {
#define ACPI_EXT_INTERNAL_PATH_ALLOCATED 0x04 /* Deallocate internal path on completion */
#define ACPI_EXT_EXTERNAL_EMITTED 0x08 /* External() statement has been emitted */
#define ACPI_EXT_ORIGIN_FROM_OPCODE 0x10 /* External came from a External() opcode */
#define ACPI_EXT_CONFLICTING_DECLARATION 0x20 /* External has a conflicting declaration within AML */
struct acpi_external_file {
char *path;

27
drivers/acpi/acpica/nsaccess.c
View File

@ -47,6 +47,10 @@
#include "acnamesp.h"
#include "acdispat.h"
#ifdef ACPI_ASL_COMPILER
#include "acdisasm.h"
#endif
#define _COMPONENT ACPI_NAMESPACE
ACPI_MODULE_NAME("nsaccess")
@ -580,6 +584,29 @@ acpi_ns_lookup(union acpi_generic_state *scope_info,
(char *)&current_node->name,
current_node));
}
#ifdef ACPI_ASL_COMPILER
/*
* If this ACPI name already exists within the namespace as an
* external declaration, then mark the external as a conflicting
* declaration and proceed to process the current node as if it did
* not exist in the namespace. If this node is not processed as
* normal, then it could cause improper namespace resolution
* by failing to open a new scope.
*/
if (acpi_gbl_disasm_flag &&
(status == AE_ALREADY_EXISTS) &&
((this_node->flags & ANOBJ_IS_EXTERNAL) ||
(walk_state
&& walk_state->opcode == AML_EXTERNAL_OP))) {
this_node->flags &= ~ANOBJ_IS_EXTERNAL;
this_node->type = (u8)this_search_type;
if (walk_state->opcode != AML_EXTERNAL_OP) {
acpi_dm_mark_external_conflict
(this_node);
}
break;
}
#endif
*return_node = this_node;
return_ACPI_STATUS(status);