sata_nv does not function in kernel > 2.6.20.21... possible ACPI or PCI involvement?

[Matthew Hall <mhall@mhcomputing.net>]

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Hello All,

Jeff Garzik forwarded me here to get some assistance resolving a 
functionality regression in my sata_nv controller driver in recent Linux 
kernels. I have attached the same data here that I ended up sending to 
Jeff + others on the linux-ide list already. I assume you will probably 
need other different data from Jeff so please let me know if any other 
omitted information is required for diagnostics and I will respond ASAP.

I am using the Supermicro H8DCE motherboard. Some (not all) of the SATA
channels quit working due to some kind of resource conflict when I
upgrade to any kernel above 2.6.20.xx series, in my case I am running
2.6.20.21 SMP x86_64 presently.

The boot error which appears in dmesg for the missing SATA channels on
2.6.23.12 is pasted below.

Thanks,
Matthew Hall

ACPI: PCI Interrupt Link [LT3D] enabled at IRQ 46
ACPI: PCI Interrupt 0000:80:07.0[A] -> Link [LT3D] -> GSI 46 (level,
low) -> IRQ 46
sata_nv 0000:80:07.0: Using ADMA mode
PCI: Unable to reserve mem region #6:1000@dfefe000 for device
0000:80:07.0
ACPI: PCI interrupt for device 0000:80:07.0 disabled
sata_nv: probe of 0000:80:07.0 failed with error -16
ACPI: PCI Interrupt Link [LT2E] enabled at IRQ 45
ACPI: PCI Interrupt 0000:80:08.0[A] -> Link [LT2E] -> GSI 45 (level,
low) -> IRQ 45
sata_nv 0000:80:08.0: Using ADMA mode
PCI: Unable to reserve mem region #6:1000@dfefd000 for device
0000:80:08.0
ACPI: PCI interrupt for device 0000:80:08.0 disabled
sata_nv: probe of 0000:80:08.0 failed with error -16

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