diff options
Diffstat (limited to 'sys/dev/acpica/acpi.c')
| -rw-r--r-- | sys/dev/acpica/acpi.c | 9 |
1 files changed, 9 insertions, 0 deletions
diff --git a/sys/dev/acpica/acpi.c b/sys/dev/acpica/acpi.c index c1bfd880c8960..f55a0048e4b67 100644 --- a/sys/dev/acpica/acpi.c +++ b/sys/dev/acpica/acpi.c @@ -2221,6 +2221,15 @@ acpi_DeviceIsPresent(device_t dev) return (FALSE); status = acpi_GetInteger(h, "_STA", &s); + /* + * Onboard serial ports on certain AMD motherboards have an invalid _STA + * method that always returns 0. Force them to always be treated as present. + * + * This may solely be a quirk of a preproduction BIOS. + */ + if (acpi_MatchHid(h, "AMDI0020") || acpi_MatchHid(h, "AMDI0010")) + return (TRUE); + /* If no _STA method, must be present */ if (ACPI_FAILURE(status)) return (status == AE_NOT_FOUND ? TRUE : FALSE); |