PP_CS8920_ISAINT
iowrite16(PP_CS8920_ISAINT, lp->virt_addr + ADD_PORT);
(i = readreg(dev, PP_CS8920_ISAINT) & 0xff,
writereg(dev, PP_CS8920_ISAINT, irq);
writereg(dev, PP_CS8920_ISAINT, 0);