Re: RFC: outb 0x80 in inb_p, outb_p harmful on some modern AMD64 with MCP51 laptops

Alan Cox
2007-12-12T23:07:33Z

> Yes, it's now clear that all of this is so. Regrettably, it's used in
> dozens of drivers, most having nothing to do with an ISA/LPC bus.
>
> If it really is specific to the ISA architecture, then it should only be
> used in architecture specific code.

ISA/LPC is not architecture specific. In fact ISA/LPC bus components get
everywhere because the PC market drives the cost per unit for those
components down to nearly nothing.