From: Lin Ming <ming.m.lin@xxxxxxxxx> Predicate can be used for an implicit return value. This change improves the implicit return mechanism to be more compatible with the MS interpreter. http://www.acpica.org/bugzilla/show_bug.cgi?id=349 Below AML code from http://bugzilla.kernel.org/show_bug.cgi?id=10686 Store(0x07D6, OSYS) Method (_CRT, 0, Serialized) { If (LLess (OSYS, 0x07D6)) { If (LEqual (\_SB.TJ85, Zero)) { Return (Add (0x0AAC, Multiply (TPC, 0x0A))) } Else { Return (Add (0x0AAC, Multiply (TP85, 0x0A))) } } } Previously _CRT returns 0x07D6, now it returns 0 (predicate value of LLess) Signed-off-by: Lin Ming <ming.m.lin@xxxxxxxxx> Signed-off-by: Bob Moore <robert.moore@xxxxxxxxx> Signed-off-by: Len Brown <len.brown@xxxxxxxxx> --- drivers/acpi/dispatcher/dswexec.c | 4 ++++ 1 files changed, 4 insertions(+), 0 deletions(-) diff --git a/drivers/acpi/dispatcher/dswexec.c b/drivers/acpi/dispatcher/dswexec.c index 5b24191..396fe12 100644 --- a/drivers/acpi/dispatcher/dswexec.c +++ b/drivers/acpi/dispatcher/dswexec.c @@ -166,6 +166,10 @@ acpi_ds_get_predicate_value(struct acpi_walk_state *walk_state, status = AE_CTRL_FALSE; } + /* Predicate can be used for an implicit return value */ + + (void)acpi_ds_do_implicit_return(local_obj_desc, walk_state, TRUE); + cleanup: ACPI_DEBUG_PRINT((ACPI_DB_EXEC, "Completed a predicate eval=%X Op=%p\n", -- 1.5.5.1 -- To unsubscribe from this list: send the line "unsubscribe linux-acpi" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
