IRQ_MFP_BUSY
atari_turnoff_irq(IRQ_MFP_BUSY); /* avoid ints */
enable_irq(IRQ_MFP_BUSY);
disable_irq(IRQ_MFP_BUSY);
IRQ_MFP_BUSY, PARPORT_DMA_NONE,
if (request_irq(IRQ_MFP_BUSY, parport_irq_handler, 0, p->name,
free_irq(IRQ_MFP_BUSY, this_port);