On Fri, 2008-10-24 at 19:57 +0200, Maciej Rutecki wrote: > During boot I have this message: > > ata_piix 0000:00:1f.1: version 2.12 > ata_piix 0000:00:1f.1: PCI INT A -> GSI 16 (level, low) -> IRQ 16 > ata_piix 0000:00:1f.1: setting latency timer to 64 > scsi4 : ata_piix > scsi5 : ata_piix > ata5: PATA max UDMA/100 cmd 0x1f0 ctl 0x3f6 bmdma 0x60a0 irq 14 > ata6: PATA max UDMA/100 cmd 0x170 ctl 0x376 bmdma 0x60a8 irq 15 > ata5.00: ATAPI: MATSHITADVD-RAM UJ-840S, 1.11, max MWDMA2 > ata5.00: configured for MWDMA2 > ata6: port disabled. ignoring. > scsi 4:0:0:0: timing out command, waited 22s > scsi 4:0:0:0: timing out command, waited 22s > scsi 4:0:0:0: timing out command, waited 22s > scsi 4:0:0:0: timing out command, waited 22s > scsi 4:0:0:0: timing out command, waited 22s > scsi 4:0:0:0: timing out command, waited 22s > ata5: WARNING: synchronous SCSI scan failed without making any progress, > switching to async > > DVD drive doesn't work. Under 2.6.27 (stable and -rc) works OK. > > Dmesg ang config: > http://unixy.pl/maciek/download/kernel/2.6.28-rc1/ You need this patch: James --- commit e013e13bf605b9e6b702adffbe2853cfc60e7806 Author: Jens Axboe <jens.axboe@xxxxxxxxxx> Date: Fri Oct 24 09:22:42 2008 +0200 libata: fix bug with non-ncq devices The recent commit 2fca5ccf97d2c28bcfce44f5b07d85e74e3cd18e ("libata: switch to using block layer tagging support") to enable support for block layer tagging in libata was broken for non-NCQ devices The block layer initializes the tag field to -1 to detect invalid uses of a tag, and if the libata devices does NOT support NCQ, we just used that field to index the internal command list. So we need to check for -1 first and only use the tag field if it's valid. Signed-off-by: Jens Axboe <jens.axboe@xxxxxxxxxx> Reported-by: Alexander Beregalov <a.beregalov@xxxxxxxxx> Tested-by: Paul Mundt <lethal@xxxxxxxxxxxx> Tested-by: Dave Young <hidave.darkstar@xxxxxxxxx> Tested-by: Rafael J. Wysocki <rjw@xxxxxxx> Signed-off-by: Linus Torvalds <torvalds@xxxxxxxxxxxxxxxxxxxx> diff --git a/drivers/ata/libata-scsi.c b/drivers/ata/libata-scsi.c index d5b9b72..4b95c43 100644 --- a/drivers/ata/libata-scsi.c +++ b/drivers/ata/libata-scsi.c @@ -708,7 +708,11 @@ static struct ata_queued_cmd *ata_scsi_qc_new(struct ata_device *dev, { struct ata_queued_cmd *qc; - qc = ata_qc_new_init(dev, cmd->request->tag); + if (cmd->request->tag != -1) + qc = ata_qc_new_init(dev, cmd->request->tag); + else + qc = ata_qc_new_init(dev, 0); + if (qc) { qc->scsicmd = cmd; qc->scsidone = done; -- 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
