> Here's a delusional reply: I didn't see any point to it. > 1) a wmb would add overhead > 2) the hardware is supposed to be looking at the status flag, > anyway, and not misbehaving. > 3) there is a wmb when the descr is actually refilled in such > a way as to actually mean something to the hardware. > > All that I really acomplished here is a minor trick to > aid in debug printing when looking for something bad.
And the whole thing is moot because 0 is actually a perfectly valid DMA address :-) I suspect spider will end up trying to hit some internal register or it's PCIe or whatever it has mapped at 0 internally and will blow up ... At least on spider, it's not RAM there.... Ben. - To unsubscribe from this list: send the line "unsubscribe netdev" in the body of a message to [EMAIL PROTECTED] More majordomo info at http://vger.kernel.org/majordomo-info.html
