[Bug 13716] New: The AIC-7892P controller does not work any more

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http://bugzilla.kernel.org/show_bug.cgi?id=13716

           Summary: The AIC-7892P controller does not work any more
           Product: SCSI Drivers
           Version: 2.5
    Kernel Version: 2.6.31-rc1. 2.6.31-rc1-git10
          Platform: All
        OS/Version: Linux
              Tree: Mainline
            Status: NEW
          Severity: high
          Priority: P1
         Component: Other
        AssignedTo: scsi_drivers-other@kernel-bugs.osdl.org
        ReportedBy: andrej@podzimek.org
        Regression: Yes


The usual probe fails with an error message saying that no IRQ could be
assigned to the controller, possibly due to a corrupt MP table.

The controller works fine with 2.6.30.1 and below.

This is how the adapter is normally initialized (messages from 2.6.29.6):
    aic7xxx 0000:01:03.0: PCI INT A -> GSI 28 (level, low) -> IRQ 28
    scsi0 : Adaptec AIC7XXX EISA/VLB/PCI SCSI HBA DRIVER, Rev 7.0
    <Adaptec aic7892 Ultra160 SCSI adapter>
    aic7892: Ultra160 Wide Channel A, SCSI Id=7, 32/253 SCBs

With 2.6.31-rc1, the kernel freezes with an error message and tries to restart
the controller periodically, which always fails.

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