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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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