On Thu, 2013-02-07 at 23:20 +1100, Benjamin Herrenschmidt wrote: > For the "swapped" case, I would suggest using ioread16be for the registers > for the data port, use ioread16_rep followed by a pass of byteswap. I assume > that this incorrect wiring case only happens on BE platforms right ?
Of course that won't work on writes unless you use a bounce buffer, but heh, who cares, it's busted anyway ? Another option is to stick with a loop of ioread16be/iowrite16be, it *should* work, but it will have too many memory barriers, the impact will vary depending on the core. Cheers, Ben. -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to [email protected] More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
