ACPICA: iASL compiler: allow compilation of externals with paths that refer to existi...

ACPICA commit 9a252114197409290813bee570e9d53c22b99d32

This change allows compilation of code like the following:

definition_block (...)
{
    External (ABCD.EFGH)
    Device (ABCD)
    {
        Name (IJLK,0)
    }
}

but does not allow compilation of code like the following:

definition_block (...)
{
    External (ABCD)
    Device (ABCD)
    {
        Name (EFGH,0)
    }
}

Link: https://github.com/acpica/acpica/commit/9a252114
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>

diff --git a/drivers/acpi/acpica/aclocal.h b/drivers/acpi/acpica/aclocal.h
index 822dbc5..bae943b 100644 (file)
--- a/drivers/acpi/acpica/aclocal.h
+++ b/drivers/acpi/acpica/aclocal.h
@@ -199,6 +199,7 @@ struct acpi_namespace_node {
 #define ANOBJ_EVALUATED                 0x20   /* Set on first evaluation of node */
 #define ANOBJ_ALLOCATED_BUFFER          0x40   /* Method AML buffer is dynamic (install_method) */
 
+#define IMPLICIT_EXTERNAL               0x02   /* iASL only: This object created implicitly via External */
 #define ANOBJ_IS_EXTERNAL               0x08   /* iASL only: This object created via External() */
 #define ANOBJ_METHOD_NO_RETVAL          0x10   /* iASL only: Method has no return value */
 #define ANOBJ_METHOD_SOME_NO_RETVAL     0x20   /* iASL only: Method has at least one return value */

diff --git a/drivers/acpi/acpica/nsaccess.c b/drivers/acpi/acpica/nsaccess.c
index e5f4fa4..14be12f 100644 (file)
--- a/drivers/acpi/acpica/nsaccess.c
+++ b/drivers/acpi/acpica/nsaccess.c
@@ -634,6 +634,12 @@ acpi_ns_lookup(union acpi_generic_state *scope_info,
                                            this_node->object;
                                }
                        }
+#ifdef ACPI_ASL_COMPILER
+                       if (!acpi_gbl_disasm_flag &&
+                           (this_node->flags & ANOBJ_IS_EXTERNAL)) {
+                               this_node->flags |= IMPLICIT_EXTERNAL;
+                       }
+#endif
                }
 
                /* Special handling for the last segment (num_segments == 0) */