> Ok, makes sense. If I split this out to the ISA driver, I would > probably also disallow changing io_type, as ISA 8250 ports are > all based on PIO mode. Alas not, they also come in MMIO form now and then, not often but just enough to be annoyingly unignorable. However the ISA driver can handle that 'in-house' and I've never seen anything but PIO or simple MMIO. Alan -- To unsubscribe from this list: send the line "unsubscribe linux-serial" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html