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Subjectaic7xxx regression occuring after 2.6.12 final
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Hiya,

For my Adaptec 29160 card; I see a regression after 2.6.12 final.
To be exact, these releases work for me:
2.6.12
2.6.12.1

These releases do not work for me:
2.6.12-mm1
2.6.12-mm2
2.6.12-git7
2.6.13-rc1

On a working kernel; I see the following:
ACPI: PCI Interrupt Link [APC3] enabled at IRQ 18
ACPI: PCI Interrupt 0000:01:08.0[A] -> Link [APC3] -> GSI 18 (level,
high) -> IRQ 18
scsi0 : Adaptec AIC7XXX EISA/VLB/PCI SCSI HBA DRIVER, Rev 6.2.36
<Adaptec 29160 Ultra160 SCSI adapter>
aic7892: Ultra160 Wide Channel A, SCSI Id=7, 32/253 SCBs
Vendor: FUJITSU Model: MAP3367NP Rev: 0106
Type: Direct-Access ANSI SCSI revision: 03
scsi0:A:0:0: Tagged Queuing enabled. Depth 253
target0:0:0: Beginning Domain Validation
WIDTH IS 1
(scsi0:A:0): 6.600MB/s transfers (16bit)
(scsi0:A:0): 160.000MB/s transfers (80.000MHz DT, offset 127, 16bit)
target0:0:0: Ending Domain Validation

On a failing kernel, I see:
ACPI: PCI Interrupt Link [APC3] enabled at IRQ 18
ACPI: PCI Interrupt 0000:01:08.0[A] -> Link [APC3] -> GSI 18 (level,
high) -> IRQ 18
scsi0 : Adaptec AIC7XXX EISA/VLB/PCI SCSI HBA DRIVER, Rev 6.2.36
<Adaptec 29160 Ultra160 SCSI adapter>
aic7892: Ultra160 Wide Channel A, SCSI Id=7, 32/253 SCBs
target0:0:0: asynchronous
Vendor: FUJITSU Model: MAP3367NP Rev: 0106
Type: Direct-Access ANSI SCSI revision: 03
scsi0:A:0:0: Tagged Queuing enabled. Depth 253
target0:0:0: Beginning Domain Validation
target0:0:0: wide asynchronous
(scsi0:A:0): refuses tagged commands. Performing non-tagged I/O
target0:0:0: asynchronous
[The PC hangs at this point]


lspci output for the adapter:
0000:01:08.0 SCSI storage controller: Adaptec AIC-7892A U160/m (rev 02)
Subsystem: Adaptec 29160 Ultra160 SCSI Controller
Flags: bus master, 66Mhz, medium devsel, latency 32, IRQ 18
BIST result: 00
I/O ports at d800 [disabled] [size=256]
Memory at db000000 (64-bit, non-prefetchable) [size=4K]
Capabilities: [dc] Power Management version 2
Please let me know if there are specific patches I need to apply or
revert to debug this. I have more drives on this controller; to be exact
I have 2 U320-capable drives and one U160-capable drive on wide channel
A; and 3 removable media units (CD-R, DVD, CD-ROM) on the 50-pin
SCSI-bus.

Thanks,
Tony.
(Please CC replies to me as I am not subscribed to LKML or linux-scsi)

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