ENGINE_IRQ_BREADCRUMB
test_and_clear_bit(ENGINE_IRQ_BREADCRUMB, &engine->irq_posted)) {
set_bit(ENGINE_IRQ_BREADCRUMB,
set_bit(ENGINE_IRQ_BREADCRUMB, &engine->irq_posted);
test_and_clear_bit(ENGINE_IRQ_BREADCRUMB,
clear_bit(ENGINE_IRQ_BREADCRUMB, &engine->irq_posted);
yesno(test_bit(ENGINE_IRQ_BREADCRUMB,
clear_bit(ENGINE_IRQ_BREADCRUMB, &engine->irq_posted);