Maybe it is an idea to disable NCQ for vt8251 compile-time (kernel-option) until it works correctly? On Tuesday 20 June 2006 21:31, Bastiaan Jacques wrote: > On Tuesday 20 June 2006 17:37, Tejun Heo wrote: > > [CC'ing Bastiaan Jacques. Hi!] > > Hey! > > > Do you happen to have a different drive which can do NCQ? > > Preferably, one from another vendor? > > I've just tried it with a Maxtor drive supporting NCQ, and it didn't > work. > > > AFAICS, the ahci driver is > > doing NCQ as the AHCI spec specifies and all ICH controllers seem to > > be quite happy with it. I wanna know whether the problem is from the > > specific combination of the controller and the drive or the via > > controller needs a different programming sequence for NCQ in general. > > It would seem the problem is in the VIA controller. Surprise, surprise. > > > Bastiaan, do you know whether we need to do things differently to use > > NCQ on vt8251? > > Apparently we have a hardware or firmware bug to work around, but I have > no idea what we should be doing differently. - : 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
