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| author | Jeff Skirvin <jeffrey.d.skirvin@intel.com> | 2012-09-05 21:36:47 -0700 |
|---|---|---|
| committer | James Bottomley <JBottomley@Parallels.com> | 2012-09-24 12:11:04 +0400 |
| commit | 54b46677757ff8d6c282305fc7710f466b63d6dc (patch) | |
| tree | f9d228e23ee1e5567746cce654a033bff27e7441 /drivers/scsi/isci | |
| parent | 2c8bd81010ed9377e761893487803a9b7408014d (diff) | |
| download | linux-54b46677757ff8d6c282305fc7710f466b63d6dc.tar.bz2 | |
[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>
Diffstat (limited to 'drivers/scsi/isci')
| -rw-r--r-- | drivers/scsi/isci/host.c | 10 |
1 files changed, 6 insertions, 4 deletions
diff --git a/drivers/scsi/isci/host.c b/drivers/scsi/isci/host.c index bc8981ed02b3..d4daa0f24595 100644 --- a/drivers/scsi/isci/host.c +++ b/drivers/scsi/isci/host.c @@ -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); |