On Tue, 30 Oct 2007 15:14:39 +0000 Daniel Drake <dsd@xxxxxxxxxx> wrote: > Hi Alan, > > In 2.6.23 and previous, CD writing works fine on my system. I'm using > ata_piix on: > > 00:1f.2 IDE interface: Intel Corporation 82801GBM/GHM (ICH7 Family) SATA > IDE Controller (rev 01) > > When I'm running CD writing utilities, I sometimes see this message in > the kernel logs: > ata2.00: 66 bytes trailing data > Things do work fine though. By luck in part I suspect. That shouldn't be happening and indicates something is very wrong. With the fifo buffers set right that may well get worse. > git bisect lead me to commit 2db78dd302d26d242d3e8e5c4c5024b6c3ea93c2 as > the culprit. > > Author: Alan Cox <alan@xxxxxxxxxxxxxxxxxxx> > Date: Tue Oct 2 13:53:04 2007 -0700 > > libata_scsi: Fix ATAPI transfer lengths > > Some controller variants snoop the ATAPI length value for Packet > transfers to do state machine and FIFO management. Thus we want to > set it properly, even for cases where it is otherwise meaningless. > > Any ideas? Not immediately - but if you've got wrong transfer lengths its a candidate for this. Ok lets start with the basics If you mount a CD and use it does it work If you use cdrecord does it work ? What vendor drive and does it seem to be a specific box/drive that triggers this ? Alan - 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
