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| author | Bob Moore <robert.moore@intel.com> | 2008-11-13 10:51:49 +0800 |
|---|---|---|
| committer | Len Brown <len.brown@intel.com> | 2008-12-29 22:38:38 -0500 |
| commit | 5572a9859fa55216597b8226717691956d3e53e3 (patch) | |
| tree | fbf50f65441f1d96b83a1ec0c64aa32d1be88a8a /drivers/acpi/namespace | |
| parent | 319f8b892722f289bb6e07b1067be3b2e0714238 (diff) | |
| download | lwn-5572a9859fa55216597b8226717691956d3e53e3.tar.gz lwn-5572a9859fa55216597b8226717691956d3e53e3.zip | |
ACPICA: Fix to allow aliases within ASL namepaths
Fixes a problem where the use of an alias within a namepath
would result in a not found error or cause the compiler to fault.
Also now allows forward references from the Alias operator itself.
ACPICA BZ 738.
http://www.acpica.org/bugzilla/show_bug.cgi?id=738
Signed-off-by: Bob Moore <robert.moore@intel.com>
Signed-off-by: Lin Ming <ming.m.lin@intel.com>
Signed-off-by: Len Brown <len.brown@intel.com>
Diffstat (limited to 'drivers/acpi/namespace')
| -rw-r--r-- | drivers/acpi/namespace/nsaccess.c | 4 |
1 files changed, 4 insertions, 0 deletions
diff --git a/drivers/acpi/namespace/nsaccess.c b/drivers/acpi/namespace/nsaccess.c index 29c7c271dbb8..35b0e46bd095 100644 --- a/drivers/acpi/namespace/nsaccess.c +++ b/drivers/acpi/namespace/nsaccess.c @@ -588,6 +588,10 @@ acpi_ns_lookup(union acpi_generic_state *scope_info, * segments). */ if (this_node->type == ACPI_TYPE_LOCAL_ALIAS) { + if (!this_node->object) { + return_ACPI_STATUS(AE_NOT_EXIST); + } + if (acpi_ns_opens_scope (((struct acpi_namespace_node *)this_node-> object)->type)) { |