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ACPICA: Disassembler: Improve pathname support for emitted External() statements.

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This change adds full pathname support for external names that have been
resolved internally by the inclusion of additional ACPI tables (via the
iASL -e option). Without this change, the disassembler can emit multiple
externals for the same object, or it become confused when the Scope()
operator is used on an external object.

Linux kernel behaviour is not affected as the structure changes and the
new invocations are only used by compiler and disassembler which are
not shipped in the kernel currently.

Reported-by: Michael Tsirkin <mst@redhat.com>
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>
This commit is contained in:
Bob Moore 2014-01-08 13:43:18 +08:00 committed by Rafael J. Wysocki
parent 5076f00504
commit 5af2b6351b
3 changed files with 8 additions and 7 deletions
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9
drivers/acpi/acpica/aclocal.h
View file

@ -1038,15 +1038,16 @@ struct acpi_external_list {
struct acpi_external_list *next;
u32 value;
u16 length;
u16 flags;
u8 type;
u8 flags;
u8 resolved;
u8 emitted;
};
/* Values for Flags field above */
#define ACPI_IPATH_ALLOCATED 0x01
#define ACPI_EXT_RESOLVED_REFERENCE 0x01 /* Object was resolved during cross ref */
#define ACPI_EXT_ORIGIN_FROM_FILE 0x02 /* External came from a file */
#define ACPI_EXT_INTERNAL_PATH_ALLOCATED 0x04 /* Deallocate internal path on completion */
#define ACPI_EXT_EXTERNAL_EMITTED 0x08 /* External() statement has been emitted */
struct acpi_external_file {
char *path;

2
drivers/acpi/acpica/dsfield.c
View file

@ -105,7 +105,7 @@ acpi_ds_create_external_region(acpi_status lookup_status,
* operation_region not found. Generate an External for it, and
* insert the name into the namespace.
*/
acpi_dm_add_to_external_list(op, path, ACPI_TYPE_REGION, 0);
acpi_dm_add_op_to_external_list(op, path, ACPI_TYPE_REGION, 0, 0);
status = acpi_ns_lookup(walk_state->scope_info, path, ACPI_TYPE_REGION,
ACPI_IMODE_LOAD_PASS1, ACPI_NS_SEARCH_PARENT,
walk_state, node);

4
drivers/acpi/acpica/dswload.c
View file

@ -181,8 +181,8 @@ acpi_ds_load1_begin_op(struct acpi_walk_state * walk_state,
* Target of Scope() not found. Generate an External for it, and
* insert the name into the namespace.
*/
acpi_dm_add_to_external_list(op, path, ACPI_TYPE_DEVICE,
0);
acpi_dm_add_op_to_external_list(op, path,
ACPI_TYPE_DEVICE, 0, 0);
status =
acpi_ns_lookup(walk_state->scope_info, path,
object_type, ACPI_IMODE_LOAD_PASS1,