PROBLEM:  (QAR 70824)    (Patch ID: OSF440-062)
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This patch fixes a problem in which a system with a KZPCA host bus adapter
may hang when the SCSI bus is reset.

PROBLEM:  (QAR 72878, QAR 73074)    (Patch ID: OSF440-119)
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The event logger will report command timeouts.

PROBLEM:  (QARs 71852, 72677)    (Patch ID: OSF440-129)
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A panic, machine check, or hang can occur when aborting an I/O due to
a command timeout or aborting an application program with pending I/Os.


PROBLEM:  (QAR 71852, QAR 73310, QAR 73450)    (Patch ID: OSF440-129)
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The following problems on the ITPSA driver that supports the KZPCM
adapteron  can occur while the system is processing a SCSI bus or SCSI
bus device reset request that is issued from the class driver:

1. The following ITPSA events are logged in the /var/adm/binary.errlog
   file or the /var/adm/messages file:
      a. Command timeout
      b. Illegal instruction
      c. HTH timeout
      d. SCSI bus reset error
2. The system panics and displays the message
   "xpt_callback: ccb not on any list"
3. The system panics and displays the message
   "simple_lock: time limit exceeded"

PROBLEM:  (QAR 73625)    (Patch ID: OSF440-129)
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On the 8951U and 8952U adapters, SCSI bus resets are lost when
these adapters are connected to single ended drives.

PROBLEM (QAR 72677)  (Patch ID: OSF440-129)

A "simple_unlock: no locks owned by cpu" panic can occur during boot
when lockmode is set to 4.

PROBLEM:  (QAR 71594)    (Patch ID: OSF440-072)
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This patch fixes a problem with the ITPSA driver for KZPCM and KZPCA devices,
which resulted in a syncrhonization problem, causing the SCSI bus to hang.
Sense data was potentially lost because the autosense command was being queued
at the tail of the request queue.  

In addition, request sense and inquiry commands were updated to ensure that
there are no other synchronization problems.