Comment 0 for bug 1512415

There are multiple problems with tape drives when using a media changer on an hpsa controller.
The problem appears for example when you label tapes in Dell Netvault.

The problem does not appear in current vanilla kernel 4.2.3.

After bisecting the problem the actually first good commit is:
3ce438df106826edde7ad724f3819716a3f0cf56 is the first bad commit
commit 3ce438df106826edde7ad724f3819716a3f0cf56
Author: Matt Gates <email address hidden>
Date: Wed Dec 4 17:10:36 2013 -0600

    [SCSI] hpsa: allow SCSI mid layer to handle unit attention

    We were clobbering the SCSI status and setting
    cmd->result = DID_SOFT_ERROR << 16; to get a retry,
    but better to let the mid layer handle the unit
    attention.

    Signed-off-by: Matt Gates <email address hidden>
    Acked-by: Stephen M. Cameron <email address hidden>
    Signed-off-by: James Bottomley <email address hidden>

:040000 040000 a7ea924772d20fd6faa968a855cffdb864876264 99765902968200eacf3a6ff1267b691a7bb24ebe M drivers

thanks to git bisecting rules:
good = label errors = old kernel
bad = no label errors = newer kernel

Please consider backporting that fix to the 3.13 ubuntu kernel.