diff options
| -rw-r--r-- | sys/dev/acpica/acpi.c | 19 |
1 files changed, 14 insertions, 5 deletions
diff --git a/sys/dev/acpica/acpi.c b/sys/dev/acpica/acpi.c index 8cb382f397ac..5fda32e46b01 100644 --- a/sys/dev/acpica/acpi.c +++ b/sys/dev/acpica/acpi.c @@ -235,14 +235,23 @@ SYSCTL_STRING(_debug_acpi, OID_AUTO, acpi_ca_version, CTLFLAG_RD, /* * Allow override of whether methods execute in parallel or not. - * Default to serial behavior as this fixes some AE_ALREADY_EXISTS errors - * and matches the MS interpreter. + * Enable this for serial behavior, which fixes "AE_ALREADY_EXISTS" + * errors for AML that really can't handle parallel method execution. + * It is off by default since this breaks recursive methods and + * some IBMs use such code. */ -static int acpi_serialize_methods = 1; +static int acpi_serialize_methods; TUNABLE_INT("hw.acpi.serialize_methods", &acpi_serialize_methods); -/* Allow override of whether to support the _OSI method. */ -static int acpi_osi_method; +/* + * Allow override of whether to support the _OSI method. This allows us + * to claim compatibility with various MS OSs without changing the value + * we report for _OS. This is enabled by default since it fixes some + * problems with interrupt routing although it can be disabled if it + * causes problems. See the definition of "AcpiGbl_ValidOsiStrings" for + * a list of systems we claim. + */ +static int acpi_osi_method = 1; TUNABLE_INT("hw.acpi.osi_method", &acpi_osi_method); /* |