diff options
| author | Bob Moore <robert.moore@intel.com> | 2010-10-23 01:36:40 -0400 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@suse.de> | 2011-03-21 12:44:25 -0700 |
| commit | 8ac3202ab76acd2370ac49ab5232c317d93fc8e2 (patch) | |
| tree | f6d5a5626aa230a01eaa489a3b105c495ad80c8d /drivers/acpi | |
| parent | 40d5940db8efa1aa65d1b5f140d6114c437e06e9 (diff) | |
ACPICA: Fix Scope() op in module level code
commit 8df3fc981dc12d9fdcaef4100a2193b605024d7a upstream.
Some Panasonic Toughbooks create nodes in module level code.
Module level code is the executable AML code outside of control method,
for example, below AML code creates a node \_SB.PCI0.GFX0.DD02.CUBL
If (\_OSI ("Windows 2006"))
{
Scope (\_SB.PCI0.GFX0.DD02)
{
Name (CUBL, Ones)
...
}
}
Scope() op does not actually create a new object, it refers to an
existing object(\_SB.PCI0.GFX0.DD02 in above example). However, for
Scope(), we want to indeed open a new scope, so the child nodes(CUBL in
above example) can be created correctly under it.
https://bugzilla.kernel.org/show_bug.cgi?id=19462
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>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
Diffstat (limited to 'drivers/acpi')
| -rw-r--r-- | drivers/acpi/acpica/dswexec.c | 19 |
1 files changed, 17 insertions, 2 deletions
diff --git a/drivers/acpi/acpica/dswexec.c b/drivers/acpi/acpica/dswexec.c index f0280856dc0..eef6fde76ab 100644 --- a/drivers/acpi/acpica/dswexec.c +++ b/drivers/acpi/acpica/dswexec.c @@ -300,10 +300,25 @@ acpi_ds_exec_begin_op(struct acpi_walk_state *walk_state, * we must enter this object into the namespace. The created * object is temporary and will be deleted upon completion of * the execution of this method. + * + * Note 10/2010: Except for the Scope() op. This opcode does + * not actually create a new object, it refers to an existing + * object. However, for Scope(), we want to indeed open a + * new scope. */ - status = acpi_ds_load2_begin_op(walk_state, NULL); + if (op->common.aml_opcode != AML_SCOPE_OP) { + status = + acpi_ds_load2_begin_op(walk_state, NULL); + } else { + status = + acpi_ds_scope_stack_push(op->named.node, + op->named.node-> + type, walk_state); + if (ACPI_FAILURE(status)) { + return_ACPI_STATUS(status); + } + } } - break; case AML_CLASS_EXECUTE: |