[Bug 197877] New: arcmsr fails to initialize Areca ARC-1110/ARC-1120 on some systems

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https://bugzilla.kernel.org/show_bug.cgi?id=197877

            Bug ID: 197877
           Summary: arcmsr fails to initialize Areca ARC-1110/ARC-1120 on
                    some systems
           Product: SCSI Drivers
           Version: 2.5
    Kernel Version: 3.18+
          Hardware: Intel
                OS: Linux
              Tree: Mainline
            Status: NEW
          Severity: high
          Priority: P1
         Component: Other
          Assignee: scsi_drivers-other@xxxxxxxxxxxxxxxxxxxx
          Reporter: kr@xxxxxxxxxx
        Regression: No

Since the Areca driver was upgraded to v1.30.00.04 in kernel 3.18, ARC-1110 and
ARC-1120 controllers is no longer properly initialized on some systems. All
kernels from 3.18 onwards are affected.

Loading the module generates the following messages in the log:

---------------------
[  634.409073] Areca RAID Controller5: Model ARC-1120, F/W V1.49 2010-12-02
[  634.410504] scsi host5: Areca SATA RAID Controller (RAID6 capable)
               arcmsr version v1.30.00.04-20140919

[  634.410832] arcmsr 0000:07:0e.0: irq 19 for MSI/MSI-X
[  634.410893] arcmsr5: msi enabled
[  655.017019] arcmsr5: abort device command of scsi id = 0 lun = 0
[  655.017032] arcmsr5: scsi id = 0 lun = 0 ccb = '0xeeb00000' poll command
abort successfully
[  676.009017] arcmsr5: abort device command of scsi id = 1 lun = 0
[  676.009030] arcmsr5: scsi id = 1 lun = 0 ccb = '0xeeb00660' poll command
abort successfully

[---- (the above two lines repeat for SCSI IDs 2-15) ---]

[  970.025230] scsi 5:0:16:0: Processor         Areca    RAID controller  R001
PQ: 0 ANSI: 0 CCS
---------------------

No logical or passthrough drives are detected regardless of controller
configuration. 

The problem only affects certain hardware. The above was taken from a ProLiant
ML370 G3 (Intel x86). The issue was reproduced on x86_64 using an AMD-based
Fujitsu PC. Both systems work as expected with kernel 3.17.8, and the exact
same controllers works fine under any kernel when used in other systems, like
for instance a ProLiant ML350 G5 (x86 or x86_64).

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