[PATCH 02/49] ACPICA: Enable Scope change to root during module-level code execution.

From: Len Brown
Date: Sat Oct 06 2012 - 16:10:35 EST


From: Bob Moore <robert.moore@xxxxxxxxx>

Allows constructs like this:
If (XXXX)
Scope (\)
...

Signed-off-by: Bob Moore <robert.moore@xxxxxxxxx>
Signed-off-by: Feng Tang <feng.tang@xxxxxxxxx>
Signed-off-by: Len Brown <len.brown@xxxxxxxxx>
---
drivers/acpi/acpica/dswload.c | 14 ++++++++++++++
drivers/acpi/acpica/dswload2.c | 14 ++++++++++++++
2 files changed, 28 insertions(+)

diff --git a/drivers/acpi/acpica/dswload.c b/drivers/acpi/acpica/dswload.c
index 552aa3a..5575100 100644
--- a/drivers/acpi/acpica/dswload.c
+++ b/drivers/acpi/acpica/dswload.c
@@ -230,6 +230,20 @@ acpi_ds_load1_begin_op(struct acpi_walk_state * walk_state,
walk_state->scope_info->common.value = ACPI_TYPE_ANY;
break;

+ case ACPI_TYPE_METHOD:
+
+ /*
+ * Allow scope change to root during execution of module-level
+ * code. Root is typed METHOD during this time.
+ */
+ if ((node == acpi_gbl_root_node) &&
+ (walk_state->
+ parse_flags & ACPI_PARSE_MODULE_LEVEL)) {
+ break;
+ }
+
+ /*lint -fallthrough */
+
default:

/* All other types are an error */
diff --git a/drivers/acpi/acpica/dswload2.c b/drivers/acpi/acpica/dswload2.c
index ae71477..89c0114 100644
--- a/drivers/acpi/acpica/dswload2.c
+++ b/drivers/acpi/acpica/dswload2.c
@@ -230,6 +230,20 @@ acpi_ds_load2_begin_op(struct acpi_walk_state *walk_state,
walk_state->scope_info->common.value = ACPI_TYPE_ANY;
break;

+ case ACPI_TYPE_METHOD:
+
+ /*
+ * Allow scope change to root during execution of module-level
+ * code. Root is typed METHOD during this time.
+ */
+ if ((node == acpi_gbl_root_node) &&
+ (walk_state->
+ parse_flags & ACPI_PARSE_MODULE_LEVEL)) {
+ break;
+ }
+
+ /*lint -fallthrough */
+
default:

/* All other types are an error */
--
1.8.0.rc0.18.gf84667d

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