From: Jeff Skirvin <jeffrey.d.skirvin@intel.com>
Date: Thu, 6 Sep 2012 04:36:47 +0000 (-0700)
Subject: [SCSI] isci: Allow SSP tasks into the task management path.
X-Git-Tag: omap-for-v3.7-rc1/fixes-cpufreq-signed~38^2^2~38
X-Git-Url: http://git.openpandora.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=54b46677757ff8d6c282305fc7710f466b63d6dc;p=pandora-kernel.git

[SCSI] isci: Allow SSP tasks into the task management path.

This commit fixes a driver bug for SSP tasks that require task management
in the target after they complete in the SCU hardware.  The problem was
manifested in the function "isci_task_abort_task", which tests
to see if the sas_task.lldd_task is non-NULL before allowing task
management; this bug would always NULL lldd_task in the SCU I/O completion
path even if target management was required, which would prevent
task / target manangement from happening.

Note that in the case of SATA/STP targets, error recovery is provided by
the libata error handler which is why SATA/STP device recovery worked
correctly even though SSP handling did not.

Signed-off-by: Jeff Skirvin <jeffrey.d.skirvin@intel.com>
Signed-off-by: James Bottomley <JBottomley@Parallels.com>
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