Hi, after switching to libata on my old Dell notebook, I get a 30 seconds long delay during boot. If I remove the CDROM the boot process is as fast as with the old ide driver. Boot with cdrom: [ 28.103034] ata_piix 0000:00:07.1: version 2.00ac7 [ 28.103234] ata1: PATA max UDMA/33 cmd 0x1F0 ctl 0x3F6 bmdma 0x860 irq 14 [ 28.103841] ata2: PATA max UDMA/33 cmd 0x170 ctl 0x376 bmdma 0x868 irq 15 [ 28.104535] scsi0 : ata_piix [ 28.263015] ata1.00: ATA-7, max UDMA/100, 78242976 sectors: LBA48 [ 28.263486] ata1.00: ata1: dev 0 multi count 8 [ 28.269671] ata1.00: configured for UDMA/33 [ 28.270001] scsi1 : ata_piix ^-- Hangs here [ 58.594321] ata2.00: ATAPI, max UDMA/33 [ 58.754241] ata2.00: configured for UDMA/33 [ 58.754852] scsi 0:0:0:0: Direct-Access ATA SAMSUNG MP0402H UC10 PQ: 0 ANSI: 5 [ 58.755787] SCSI device sda: 78242976 512-byte hdwr sectors (40060 MB) [ 58.756312] sda: Write Protect is off [ 58.756595] sda: Mode Sense: 00 3a 00 00 [ 58.756657] SCSI device sda: write cache: enabled, read cache: enabled, doesn't support DPO or FUA [ 58.757459] SCSI device sda: 78242976 512-byte hdwr sectors (40060 MB) [ 58.757976] sda: Write Protect is off [ 58.758258] sda: Mode Sense: 00 3a 00 00 [ 58.758318] SCSI device sda: write cache: enabled, read cache: enabled, doesn't support DPO or FUA [ 58.758984] sda: sda1 sda2 sda3 sda4 [ 59.212482] sd 0:0:0:0: Attached scsi disk sda [ 59.213005] sd 0:0:0:0: Attached scsi generic sg0 type 0 [ 59.213930] scsi 1:0:0:0: CD-ROM SAMSUNG CD-ROM SN-124 N102 PQ: 0 ANSI: 5 [ 59.236734] sr0: scsi3-mmc drive: 24x/24x cd/rw xa/form2 cdda tray [ 59.252814] Uniform CD-ROM driver Revision: 3.20 [ 59.269038] sr 1:0:0:0: Attached scsi CD-ROM sr0 [ 59.269228] sr 1:0:0:0: Attached scsi generic sg1 type 5 My notebook has a PIIX4 controller: IDE interface: Intel Corporation 82371AB/EB/MB PIIX4 IDE (rev 01) This happens with all libata enabled kernels including the latest git snapshot (2.6.21-rc2). Can anyone shed some light on this? Thanks, Gregor PS: As far as I remember this cdrom was blacklisted for DMA or whatever reasons in early Linux 2.6 kernels. - 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
