On 7/2/21 7:37 PM, Rafael J. Wysocki wrote: > On Fri, Jul 2, 2021 at 9:03 AM Aubrey Li <aubrey.li@xxxxxxxxx> wrote: >> >> Based on _OSC PRM bit, BIOS can choose switch from legacy handling >> to using PRM. So if CONFIG_ACPI_PRMT is disabled, this bit should >> not be set to let BIOS fall back to the legacy handling (such as SMI). >> >> Cc: Dan Williams <dan.j.williams@xxxxxxxxx> >> Signed-off-by: Aubrey Li <aubrey.li@xxxxxxxxxxxxxxx> >> --- >> drivers/acpi/bus.c | 2 ++ >> 1 file changed, 2 insertions(+) >> >> diff --git a/drivers/acpi/bus.c b/drivers/acpi/bus.c >> index 60fb6a84..30a3d4a 100644 >> --- a/drivers/acpi/bus.c >> +++ b/drivers/acpi/bus.c >> @@ -303,7 +303,9 @@ static void acpi_bus_osc_negotiate_platform_control(void) >> >> capbuf[OSC_SUPPORT_DWORD] |= OSC_SB_HOTPLUG_OST_SUPPORT; >> capbuf[OSC_SUPPORT_DWORD] |= OSC_SB_PCLPI_SUPPORT; >> +#ifdef CONFIG_ACPI_PRMT >> capbuf[OSC_SUPPORT_DWORD] |= OSC_SB_PRM_SUPPORT; >> +#endif > > What about using if (IS_ENABLED()) instead of #ifdef? aha, sorry, using if (IS_ENABLED()) is better, will come up with a new version soon. Thanks, -Aubrey
