Mikael Pettersson writes: > Tejun Heo writes: > > Hello, > > > > Mikael Pettersson wrote: > > > The problem is still present in 2.6.29-rc2. > > > > > > More debugging first showed that only the specific machine mentioned > > > above is affected, as I've tested -rc1 on several other ata_piix boxes > > > with various oldish disks and cdroms and none of the others triggered > > > the hang. > > > > > > Secondly, the hang is due to the HP CD-Writer drive as having only it > > > on the second port suffices to produce the hang. It doesn't matter if > > > it's configured as master or slave. > > > > > > In any event, this shows that using 32-bit I/O ops should also be a > > > function of the drive you're talking to, not just the controller. > > > > If you connect the writer to another machine, does it make the machine > > hang too? > > I haven't tried it since that machine is at a different geographical > location from my other machines. But I can try it next weekend. I've now tried this CD-Writer on a couple of other boxes. AMD756 (1022:7409 rev 03), pata_amd 2.6.29-rc3: hang as init starts udev rc3 + Hugh's libata-sff patch: no hang and no visible issues, despite this possibly being out of spec for the AMD IDE controller rc3 + Hugh's patch + Alan's patch: no hang, all ok 440BX/PIIX4 (8086:7111 rev 01), ata_piix 2.6.29-rc3: hang as init starts udev rc3 + Hugh's libata-sff patch: all ok 430HX/PIIX3 (8086:7010) 2.6.29-rc3: hang during driver init, immediately after drive was identified rc3 + Hugh's libata-sff patch: all ok -- 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
