Nelson A. de Oliveira wrote:
> Hi!
> 
> My USB CD-ROM drive (that is detected as a SCSI drive) is not being
> detected on the -mm series of the Kernel.

s/USB/SATA/, I presume.

[--snip--]
-ata2.00: ATAPI, max UDMA/33
-ata2.00: configured for UDMA/33
-  Vendor: HL-DT-ST  Model: CDRW/DVD GCC4244  Rev: B101
-  Type:   CD-ROM                             ANSI SCSI revision: 05

Argh... yet another PCS problem.  With whole -mm applied, does adding 
kernel parameter 'ata_piix.force_pcs=1' make any difference?

Please provide the following info.

* the result of 'lspci -nvvv'

* dmesg output with the attached patch applied (on top of -mm).

Thanks.

-- 
tejun