On Thu, Jul 11, 2002 at 03:16:03AM +0100, Alan Cox wrote: > > I even suspect this is the default setting on PCI cards on PC. Can someone > > verify? If that is the case, that will explain why driver never sets this > > bit. Maybe we don't have any "real computers" after all. :-) > > Most PC hardware can deliver that kind of DMA guarantee. UDMA100 doesn't > work very well otherwise. I've seen this problem on a lot of PC hardware, too. The best fix would be to enable full packet mode, when the driver sees too much TX underruns. Thomas.