> I guess you didn't see Alan Cox' recent comment about the vt6421: > <http://marc.info/?l=linux-ide&m=125526699500519&w=2>. > > You should probably look for a mini-PCI card with a different chipset. Docs have appeared - whether they will help tie it down completely I don't know. > > -RAID bus controller: VT6421 IDE RAID Controller (rev 50) > > +IDE interface: VT6421 IDE RAID Controller (rev 50) (prog-if 8f [Master > > SecP SecO PriP PriO]) That shouldn't matter of itself - its basically header differences > > > > - Control: Mem- FastB2B+ ... > > + Control: Mem+ FastB2B- ... > > > > Mem - I guess x86-64 enables it for BIOS access. This is the only PCI > > device in machine A (ARM). > > > > - Latency: 32 > > + Latency: 64 These two may be worth playing with, especially latency. Forcing the latency on the problem board would be interesting given that it is a DMA transfer that is failing. -- To unsubscribe from this list: send the line "unsubscribe linux-ide" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
