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Subject2.5.54: ide-scsi still buggy?

ide-scsi emulation does not work for drive /dev/hdg, why?

kernel boot parameters:
kernel /boot/vmlinuz-2.5.54bk3 ro root=/dev/hda1 ide=reverse vga=4 hdg=ide-scsi

It freezes kernel (sysrq do nothing) after lines:
scsi0 : SCSI host adapter emulation for IDE ATAPI devices
Vendor: TEAC Model: CD-W512EB Rev: 2
Type: CD-ROM ANSI SCSI revision: 02
scsi scan: host 0 channel 0 id 0 lun 0 identifier too long, length 60, max 50. Device might be improperly identified.

while attaching it to /dev/hde works ok. Why?

PDC20265: chipset revision 2
PDC20265: not 100% native mode: will probe irqs later
PDC20265: (U)DMA Burst Bit ENABLED Primary PCI Mode Secondary PCI Mode.
ide0: BM-DMA at 0x7800-0x7807, BIOS settings: hda:DMA, hdb:DMA
ide1: BM-DMA at 0x7808-0x780f, BIOS settings: hdc:DMA, hdd:pio
hda: ST380021A, ATA DISK drive
ide0 at 0x9000-0x9007,0x8802 on irq 10
hdc: IBM-DTLA-307045, ATA DISK drive
ide1 at 0x8400-0x8407,0x8002 on irq 10
VP_IDE: IDE controller at PCI slot 00:04.1
VP_IDE: chipset revision 16
VP_IDE: not 100% native mode: will probe irqs later
VP_IDE: VIA vt82c686a (rev 22) IDE UDMA66 controller on pci00:04.1
ide2: BM-DMA at 0xd800-0xd807, BIOS settings: hde:DMA, hdf:pio
ide3: BM-DMA at 0xd808-0xd80f, BIOS settings: hdg:DMA, hdh:pio
hde: DVD-ROM DDU1621, ATAPI CD/DVD-ROM drive
hde: DMA disabled
ide2 at 0x1f0-0x1f7,0x3f6 on irq 14
hdg: CD-W512EB, ATAPI CD/DVD-ROM drive
hdg: DMA disabled

hdparm reports:
HDIO_GET_MULTCOUNT failed: Inappropriate ioctl for device
IO_support = 1 (32-bit)
unmaskirq = 1 (on)
using_dma = 1 (on)

Lukáš Hejtmánek
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