On Fri, 29 May 2015 22:18:52 +0200 Radim Krčmář <[email protected]> wrote:
> pvpanic was not properly detected when _STA was missing. > > ACPI 6.0 April 2015, 6.3.7 _STA (Status) > If a device object (including the processor object) does not have an > _STA object, then OSPM assumes that all of the above bits are set > (i.e., the device is present, enabled, shown in the UI, and > functioning). > > Not adhering to the specification made pvpanic dormant under QEMU 2.3. > > Suggested-by: Igor Mammedov <[email protected]> > Signed-off-by: Radim Krčmář <[email protected]> Reviewed-by: Igor Mammedov <[email protected]> > --- > drivers/platform/x86/pvpanic.c | 3 +-- > 1 file changed, 1 insertion(+), 2 deletions(-) > > diff --git a/drivers/platform/x86/pvpanic.c b/drivers/platform/x86/pvpanic.c > index 073a90a63dbc..7b6860333267 100644 > --- a/drivers/platform/x86/pvpanic.c > +++ b/drivers/platform/x86/pvpanic.c > @@ -95,8 +95,7 @@ static int pvpanic_add(struct acpi_device *device) > acpi_status status; > u64 ret; > > - status = acpi_evaluate_integer(device->handle, "_STA", NULL, > - &ret); > + status = acpi_bus_get_status_handle(device->handle, &ret); > > if (ACPI_FAILURE(status) || (ret & 0x0B) != 0x0B) > return -ENODEV; -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to [email protected] More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
