ICE_MAILBOXQ_EVENT_PENDING
if (!test_bit(ICE_MAILBOXQ_EVENT_PENDING, pf->state))
clear_bit(ICE_MAILBOXQ_EVENT_PENDING, pf->state);
test_bit(ICE_MAILBOXQ_EVENT_PENDING, pf->state) ||
set_bit(ICE_MAILBOXQ_EVENT_PENDING, pf->state);