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authorBob Moore <robert.moore@intel.com>2007-02-02 11:48:21 -0500
committerLen Brown <len.brown@intel.com>2007-02-02 21:14:27 -0500
commitd1fdda83f7c567f376ddd4305833de09f7919ca9 (patch)
tree059dccd5c38ad96a8f31bf8b45409460a02bd41f /drivers/acpi/dispatcher
parent9bc75cff4919f9d947982d805aed89582a20d04d (diff)
ACPICA: Fix race condition with AcpiWalkNamespace.
Fixed a problem with a possible race condition between threads executing AcpiWalkNamespace and the AML interpreter. This condition was removed by modifying AcpiWalkNamespace to (by default) ignore all temporary namespace entries created during any concurrent control method execution Signed-off-by: Alexey Starikovskiy <alexey.y.starikovskiy@intel.com> Signed-off-by: Len Brown <len.brown@intel.com>
Diffstat (limited to 'drivers/acpi/dispatcher')
-rw-r--r--drivers/acpi/dispatcher/dswload.c4
1 files changed, 2 insertions, 2 deletions
diff --git a/drivers/acpi/dispatcher/dswload.c b/drivers/acpi/dispatcher/dswload.c
index 565d4557d0e0..4ed08680ae7c 100644
--- a/drivers/acpi/dispatcher/dswload.c
+++ b/drivers/acpi/dispatcher/dswload.c
@@ -756,9 +756,9 @@ acpi_ds_load2_begin_op(struct acpi_walk_state *walk_state,
756 flags = ACPI_NS_NO_UPSEARCH; 756 flags = ACPI_NS_NO_UPSEARCH;
757 if (walk_state->pass_number == 3) { 757 if (walk_state->pass_number == 3) {
758 758
759 /* Execution mode, node cannot already exist */ 759 /* Execution mode, node cannot already exist, node is temporary */
760 760
761 flags |= ACPI_NS_ERROR_IF_FOUND; 761 flags |= (ACPI_NS_ERROR_IF_FOUND | ACPI_NS_TEMPORARY);
762 } 762 }
763 763
764 /* Add new entry or lookup existing entry */ 764 /* Add new entry or lookup existing entry */