diff options
| author | Bob Moore <robert.moore@intel.com> | 2012-12-31 04:11:45 +0400 |
|---|---|---|
| committer | Rafael J. Wysocki <rafael.j.wysocki@intel.com> | 2013-01-10 15:36:22 +0400 |
| commit | 3f654bad3257427bea7ba1c4d43a23d99a03622b (patch) | |
| tree | 97231cf216c1c2cab48bd9ffcc768b6226fbf978 /drivers/acpi/acpica | |
| parent | 9cea6249c9154a7d0b322a226261697f947692ad (diff) | |
| download | linux-3f654bad3257427bea7ba1c4d43a23d99a03622b.tar.xz | |
ACPICA: Interpreter: Fix Store() when implicit conversion is not possible.
For the cases such as a store of a string to an existing package
object, implement the store as a CopyObject().
This is a small departure from the ACPI specification which states
that the control method should be aborted in this case. However,
ASLTS suite depends on this behavior.
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>
Diffstat (limited to 'drivers/acpi/acpica')
| -rw-r--r-- | drivers/acpi/acpica/exstore.c | 29 |
1 files changed, 24 insertions, 5 deletions
diff --git a/drivers/acpi/acpica/exstore.c b/drivers/acpi/acpica/exstore.c index 90431f12f831..4ff37e8e0018 100644 --- a/drivers/acpi/acpica/exstore.c +++ b/drivers/acpi/acpica/exstore.c @@ -487,14 +487,33 @@ acpi_ex_store_object_to_node(union acpi_operand_object *source_desc, default: ACPI_DEBUG_PRINT((ACPI_DB_EXEC, - "Storing %s (%p) directly into node (%p) with no implicit conversion\n", + "Storing [%s] (%p) directly into node [%s] (%p)" + " with no implicit conversion\n", acpi_ut_get_object_type_name(source_desc), - source_desc, node)); + source_desc, + acpi_ut_get_object_type_name(target_desc), + node)); - /* No conversions for all other types. Just attach the source object */ + /* + * No conversions for all other types. Directly store a copy of + * the source object. NOTE: This is a departure from the ACPI + * spec, which states "If conversion is impossible, abort the + * running control method". + * + * This code implements "If conversion is impossible, treat the + * Store operation as a CopyObject". + */ + status = + acpi_ut_copy_iobject_to_iobject(source_desc, &new_desc, + walk_state); + if (ACPI_FAILURE(status)) { + return_ACPI_STATUS(status); + } - status = acpi_ns_attach_object(node, source_desc, - source_desc->common.type); + status = + acpi_ns_attach_object(node, new_desc, + new_desc->common.type); + acpi_ut_remove_reference(new_desc); break; } |