Michael Guntsche wrote:
> On Wed, 12 Nov 2008 11:34:19 +0900, Tejun Heo <tj@kernel.org> wrote:
> 
>> Looks like we screwed up phantom device detection somewhere.  Michael,
>> can you please apply the attached patch and report kernel boot log?
> 
> Here the relevant dmesg output
> 
> ata_piix 0000:00:07.1: version 2.12
> scsi0 : ata_piix
> scsi1 : ata_piix
> ata1: PATA max MWDMA2 cmd 0x1f0 ctl 0x3f6 bmdma 0xe800 irq 14
> ata2: PATA max MWDMA2 cmd 0x170 ctl 0x376 bmdma 0xe808 irq 15
> ata1: XXX devmask=3
> ata1.00: XXX sff_dev_classify present=1 hdiag=0 tf=01:00:00 class=1
> ata1.01: XXX sff_dev_classify present=2 hdiag=0 tf=01:00:00 class=1
> ata1.00: ATA-5: IC35L040AVER07-0, ER4OA45A, max UDMA/100
> ata1.00: 66055248 sectors, multi 16: LBA
> ata1.00: configured for MWDMA2
> ata2: XXX devmask=1
> ata2.00: XXX sff_dev_classify present=1 hdiag=0 tf=01:14:eb class=3
> ata2.01: XXX sff_dev_classify present=0 hdiag=1 tf=ff:00:00 class=1
> ata2.01: XXX status=0x1 hdiag=1
> ata2.01: NODEV after polling detection
> ata2.00: ATAPI: SAMSUNG CD-R/RW SW-408B, M300, max MWDMA2
> ata2.00: configured for MWDMA2

Can you please test the attached patch?

Thanks.

-- 
tejun