hang booting onboard HPT 366 with libata (PATA)

[Ricardo Lugo]

Hi all,

With the release of libata PATA support in 2.6.19, I am trying out  
libata with my HPT366 (built-on to motherboard), and it hangs at  
bootup while scanning for partitions. Additionally, it complains of  
abnormal status? Related information about my setup below:

- Abit BP6 motherboard running BIOS RV with HPT 1.28 (ie has  
functional ACPI DSDT table), has been recapped, not overclocked
- onboard HPT366 controller functions fine with the old IDE drivers  
(but only so long as I use UDMA mode <=3, mode 4 has reported  
problems on BP6)
- hard drive is an 80GB seagate 7200.1-ish that supports UDMA mode 5,  
partition scheme is (1-xfs, 2-swap)
- this hard drive is the only drive connected, but the kernel  
discovers one empty pata_piix controller and one empty pata_hpt366  
controller before it.

Related boot messages:

---

ACPI: PCI Interrup 0000:00:13.1[B] -> GSI 18 (level, low) -> IRQ 16
ata5: PATA max UDMA/66 cmd 0xE400 ctl 0xE802 bmdma 0xEC00 irq 16
ata6: PATA max UDMA/66 cmd 0x0 ctl 0x2 bmdma 0xEC08 irq 16
scsi4 : pata_hpt366
ata5.00: ATA-6, max UDMA/100, 156301488 sectors: LBA48
ata5.00: ata5: dev 0 multi count 16
ata5.00 configured for UDMA/33
scsi5 : pata_hpt366
ATA: abnormal status 0x1C on port 0x7
scsi 4:0:0:0: Direct-Access     ATA      ST380011A         3.06 PQ: 0  
ANSI: 5
SCSI device sda: 156301488 512-byte hdwr sectors (80026 MB)
sda: Write Protect is off
SCSI device sda: drive cache: write back
SCSI device sda: 156301488 512-byte hdwr sectors (80026 MB)
sda: Write Protect is off
SCSI device sda: drive cache: write back
sda:_

---

If there is anything I can test to help fix this issue or further  
diagnose it, please let me know.

	- Ricardo
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