Commit 54b46677 authored by Jeff Skirvin's avatar Jeff Skirvin Committed by James Bottomley

[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: default avatarJeff Skirvin <jeffrey.d.skirvin@intel.com>
Signed-off-by: default avatarJames Bottomley <JBottomley@Parallels.com>
parent 2c8bd810
......@@ -1079,7 +1079,6 @@ static void sci_controller_completion_handler(struct isci_host *ihost)
void ireq_done(struct isci_host *ihost, struct isci_request *ireq, struct sas_task *task)
{
task->lldd_task = NULL;
if (!test_bit(IREQ_ABORT_PATH_ACTIVE, &ireq->flags) &&
!(task->task_state_flags & SAS_TASK_STATE_ABORTED)) {
if (test_bit(IREQ_COMPLETE_IN_TARGET, &ireq->flags)) {
......@@ -1087,16 +1086,19 @@ void ireq_done(struct isci_host *ihost, struct isci_request *ireq, struct sas_ta
dev_dbg(&ihost->pdev->dev,
"%s: Normal - ireq/task = %p/%p\n",
__func__, ireq, task);
task->lldd_task = NULL;
task->task_done(task);
} else {
dev_dbg(&ihost->pdev->dev,
"%s: Error - ireq/task = %p/%p\n",
__func__, ireq, task);
if (sas_protocol_ata(task->task_proto))
task->lldd_task = NULL;
sas_task_abort(task);
}
}
} else
task->lldd_task = NULL;
if (test_and_clear_bit(IREQ_ABORT_PATH_ACTIVE, &ireq->flags))
wake_up_all(&ihost->eventq);
......
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