Description of problem:

This is the proc/scsi/scsi on the 2.6.8-1.521 kernel :

Attached devices:
Host: scsi0 Channel: 00 Id: 00 Lun: 00
  Vendor: IBM      Model: ST318305LW       Rev: C507
  Type:   Direct-Access                    ANSI SCSI revision: 03
Host: scsi0 Channel: 00 Id: 01 Lun: 00
  Vendor: IBM      Model: DDYS-T18350N     Rev: S93E
  Type:   Direct-Access                    ANSI SCSI revision: 03
Host: scsi0 Channel: 00 Id: 02 Lun: 00
  Vendor: IBM      Model: DDYS-T18350N     Rev: S93E
  Type:   Direct-Access                    ANSI SCSI revision: 03
Host: scsi0 Channel: 00 Id: 06 Lun: 00
  Vendor: PLEXTOR  Model: CD-R   PX-W124TS Rev: 1.06
  Type:   CD-ROM                           ANSI SCSI revision: 02
Host: scsi4 Channel: 00 Id: 00 Lun: 00
  Vendor: Revoltec Model: USB/IDE Bridge ( Rev: 0103
  Type:   Direct-Access                    ANSI SCSI revision: 02

And this is how 2.6.6-1.435.2.3smp kernel see the last device :
Host: scsi2 Channel: 00 Id: 00 Lun: 00
  Vendor: HL-DT-ST Model: DVD-ROM GDR8162B Rev: 0015
  Type:   CD-ROM                           ANSI SCSI revision: 02

My usb dvdrom drive seems mis-detected by the kernel and see as an
hard drive (sdd), when it should be seen as a cdrom drive (scd1).

Version-Release number of selected component :
kernel 2.6.7-1.494.2.2 and 2.6.8-1.521

How reproducible: Always

Steps to Reproduce:
1. Boot kernel 2.6.[78] FC2 kernels.
2. Plug the drive
3. Try to play with scd[0-9] devices (eject, cat, whatever)

Actual Results:  All scd[0-9] devices report "no such device". 
"eject sdd" works but other things report reading errors. kudzu didnt
make the cdrom1 link in /dev, but this is just a side effect.

Expected Results:  kernel should report correct vendor/model strings.
And /dev/scd1 should be attached to the drive. And things should "just
work".