sata detected..but it is probing? for some time while booting

[praka123]

I have Etch,now when i boot it takes a small halt(~30-35sec) while booting in after "SCSI subsystem initialized libata version 1.20 loaded" after threwing below lines :

Uniform Multi-Platform E-IDE driver Revision: 7.00alpha2
ide: Assuming 33MHz system bus speed for PIO modes; override with idebus=xx
SCSI subsystem initialized
libata version 1.20 loaded.
ata_piix 0000:00:1f.2: version 1.05
ACPI: PCI Interrupt 0000:00:1f.2[b] -> GSI 19 (level, low) -> IRQ 177
PCI: Setting latency timer of device 0000:00:1f.2 to 64
ata1: SATA max UDMA/133 cmd 0x1F0 ctl 0x3F6 bmdma 0xF000 irq 14
usbcore: registered new driver usbfs
usbcore: registered new driver hub
USB Universal Host Controller Interface driver v2.3
ata1: dev 0 cfg 49:2f00 82:346b 83:7d01 84:4003 85:3468 86:3c01 87:4003 88:207f
ata1: dev 0 ATA-6, max UDMA/133, 156299375 sectors: LBA48
ata1: dev 0 configured for UDMA/133
scsi0 : ata_piix
  Vendor: ATA       Model: ST380013AS        Rev: 3.18
  Type:   Direct-Access                      ANSI SCSI revision: 05
ata2: SATA max UDMA/133 cmd 0x170 ctl 0x376 bmdma 0xF008 irq 15
ata2: dev 0 cfg 49:0f00 82:4218 83:4000 84:4000 85:4218 86:4000 87:4000 88:0407
ata2: dev 0 ATAPI, max UDMA/33
ata2(0): applying bridge limits
ata2: dev 1 cfg 49:0b00 82:0000 83:0000 84:0000 85:0000 86:0000 87:0000 88:0407
ata2: dev 1 ATAPI, max UDMA/33
ata2(0): applying bridge limits
ata2: dev 0 configured for UDMA/33
ata2: qc timeout (cmd 0xef)
ata2: failed to set xfermode, disabled
ata2: dev 1 configured for UDMA/33
scsi1 : ata_piix
ACPI: PCI Interrupt 0000:00:1d.0[A] -> GSI 23 (level, low) -> IRQ 185
PCI: Setting latency timer of device 0000:00:1d.0 to 64
uhci_hcd 0000:00:1d.0: UHCI Host Controller
uhci_hcd 0000:00:1d.0: new USB bus registered, assigned bus number 1
uhci_hcd 0000:00:1d.0: irq 185, io base 0x0000b000
usb usb1: configuration #1 chosen from 1 choice
hub 1-0:1.0: USB hub found
hub 1-0:1.0: 2 ports detected
SCSI device sda: 156299375 512-byte hdwr sectors (80025 MB)
sda: Write Protect is off
sda: Mode Sense: 00 3a 00 00
SCSI device sda: drive cache: write back
SCSI device sda: 156299375 512-byte hdwr sectors (80025 MB)
sda: Write Protect is off
sda: Mode Sense: 00 3a 00 00
SCSI device sda: drive cache: write back
 sda: sda1 sda2 < sda5 sda6 sda7 sda8 sda9 sda10 sda11 sda12 sda13 sda14 >
sd 0:0:0:0: Attached scsi disk sda

how to stop this probing....after "ata2: dev 1 configured for UDMA/33" it hangs for some 40 secs and proceeds...

[burnit]

It's probably an hardware compatibility issue.

The lines

ata2: qc timeout (cmd 0xef)
ata2: failed to set xfermode, disabled

notice that there is some problem when setting optimal trasfer mode... maybe there is some kernel parameter to specify the correct speed, without probing it, speeding up the boot time.

[deepclutch]

now what to do