> This looks mostly fine. > > I was thinking about the lockless stuff, and I wonder if there > is a clever way you can get it back down to one PIO on the > GREG_STAT register. > > I think you'd need to have the ->poll() clear gp->status, then > do a smp_wb(), right before it re-enables interrupts. > > Then in the interrupt handler, you need to find a way to safely > OR-in any unset bits in gp->status in a race-free manner.
Having it atomic might work at a slightly smaller cost than a lock, though atomics don't have strong ordering requirements so you'd still have to be a bit careful. 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
