[PATCH 5/6] ACPI / EC: Fix EC_FLAGS_QUERY_HANDSHAKE platforms using new event clearing timing.

It is reported that on several platforms, EC firmware will not respond non-expected QR_EC (see EC_FLAGS_QUERY_HANDSHAKE, only write QR_EC when SCI_EVT is set). Unfortunately, ACPI specification doesn't define when the SCI_EVT should be cleared by the firmware, thus the original implementation

[PATCH 5/6] ACPI / EC: Fix EC_FLAGS_QUERY_HANDSHAKE platforms using new event clearing timing.

It is reported that on several platforms, EC firmware will not respond non-expected QR_EC (see EC_FLAGS_QUERY_HANDSHAKE, only write QR_EC when SCI_EVT is set). Unfortunately, ACPI specification doesn't define when the SCI_EVT should be cleared by the firmware, thus the original implementation