Hi Rafael, On 3/16/2016 7:50 PM, Rafael J. Wysocki wrote: > #include "internal.h" > @@ -22,7 +24,6 @@ ACPI_MODULE_NAME("scan"); > extern struct acpi_device *acpi_root; > > #define ACPI_BUS_CLASS "system_bus" > -#define ACPI_BUS_HID "LNXSYBUS" > No. > > This is not a valid device ID and should never be used as such. Section 5.6.6 in ACPI 6.1 is defining the notification value for the graceful shutdown request as a ACPI device specific value(0x81) and it is targeting the system bus(\_SB), so we took the current approach of creating a sybus driver to handle the notifications targeting the system bus. Let me go through the code again and see if we can avoid using the ACPI_BUS_HID. In the meantime, if you have any specific thoughts on how this should be handled, please let us know. Thanks, Prashanth -- 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