Prior to the conversion to the new-style libata-eh sas_ata_task_done() may have been the last opportunity to clean up the scmd, but now libata-eh explicitly handles this case. It also races against sas-eh. If a lldd completes a task after SAS_TASK_STATE_ABORTED is set it could trigger a spurious decrement of shost->host_failed. Current lldds have the band-aid of checking SAS_TASK_STATE_ABORTED before calling ->task_done(), but better to just let the scmds escalate to libata for race free cleanup. Cc: Darrick J. Wong <djwong@xxxxxxxxxx> Signed-off-by: Dan Williams <dan.j.williams@xxxxxxxxx> --- drivers/scsi/libsas/sas_ata.c | 14 -------------- 1 files changed, 0 insertions(+), 14 deletions(-) diff --git a/drivers/scsi/libsas/sas_ata.c b/drivers/scsi/libsas/sas_ata.c index dd35a98..649b04b 100644 --- a/drivers/scsi/libsas/sas_ata.c +++ b/drivers/scsi/libsas/sas_ata.c @@ -145,20 +145,6 @@ static void sas_ata_task_done(struct sas_task *task) ata_qc_complete(qc); spin_unlock_irqrestore(dev->sata_dev.ap->lock, flags); - /* - * If the sas_task has an ata qc, a scsi_cmnd and the aborted - * flag is set, then we must have come in via the libsas EH - * functions. When we exit this function, we need to put the - * scsi_cmnd on the list of finished errors. The ata_qc_complete - * call cleans up the libata side of things but we're protected - * from the scsi_cmnd going away because the scsi_cmnd is owned - * by the EH, making libata's call to scsi_done a NOP. - */ - spin_lock_irqsave(&task->task_state_lock, flags); - if (qc->scsicmd && task->task_state_flags & SAS_TASK_STATE_ABORTED) - scsi_eh_finish_cmd(qc->scsicmd, &sas_ha->eh_done_q); - spin_unlock_irqrestore(&task->task_state_lock, flags); - qc_already_gone: list_del_init(&task->list); sas_free_task(task); -- To unsubscribe from this list: send the line "unsubscribe linux-ide" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
