diff options
Diffstat (limited to 'drivers/scsi/libiscsi.c')
| -rw-r--r-- | drivers/scsi/libiscsi.c | 37 |
1 files changed, 14 insertions, 23 deletions
diff --git a/drivers/scsi/libiscsi.c b/drivers/scsi/libiscsi.c index 3eddab0..1def8e1 100644 --- a/drivers/scsi/libiscsi.c +++ b/drivers/scsi/libiscsi.c @@ -505,6 +505,7 @@ static void iscsi_free_task(struct iscsi_task *task) struct iscsi_conn *conn = task->conn; struct iscsi_session *session = conn->session; struct scsi_cmnd *sc = task->sc; + int oldstate = task->state; ISCSI_DBG_SESSION(session, "freeing task itt 0x%x state %d sc %p\n", task->itt, task->state, task->sc); @@ -525,10 +526,10 @@ static void iscsi_free_task(struct iscsi_task *task) /* SCSI eh reuses commands to verify us */ sc->SCp.ptr = NULL; /* - * queue command may call this to free the task, but - * not have setup the sc callback + * queue command may call this to free the task, so + * it will decide how to return sc to scsi-ml. */ - if (sc->scsi_done) + if (oldstate != ISCSI_TASK_REQUEUE_SCSIQ) sc->scsi_done(sc); } } @@ -572,7 +573,8 @@ static void iscsi_complete_task(struct iscsi_task *task, int state) task->itt, task->state, task->sc); if (task->state == ISCSI_TASK_COMPLETED || task->state == ISCSI_TASK_ABRT_TMF || - task->state == ISCSI_TASK_ABRT_SESS_RECOV) + task->state == ISCSI_TASK_ABRT_SESS_RECOV || + task->state == ISCSI_TASK_REQUEUE_SCSIQ) return; WARN_ON_ONCE(task->state == ISCSI_TASK_FREE); task->state = state; @@ -1600,27 +1602,23 @@ enum { FAILURE_SESSION_NOT_READY, }; -static int iscsi_queuecommand_lck(struct scsi_cmnd *sc, void (*done)(struct scsi_cmnd *)) +int iscsi_queuecommand(struct Scsi_Host *host, struct scsi_cmnd *sc) { struct iscsi_cls_session *cls_session; - struct Scsi_Host *host; struct iscsi_host *ihost; int reason = 0; struct iscsi_session *session; struct iscsi_conn *conn; struct iscsi_task *task = NULL; - sc->scsi_done = done; sc->result = 0; sc->SCp.ptr = NULL; - host = sc->device->host; ihost = shost_priv(host); - spin_unlock(host->host_lock); cls_session = starget_to_session(scsi_target(sc->device)); session = cls_session->dd_data; - spin_lock(&session->lock); + spin_lock_bh(&session->lock); reason = iscsi_session_chkready(cls_session); if (reason) { @@ -1706,25 +1704,21 @@ static int iscsi_queuecommand_lck(struct scsi_cmnd *sc, void (*done)(struct scsi } session->queued_cmdsn++; - spin_unlock(&session->lock); - spin_lock(host->host_lock); + spin_unlock_bh(&session->lock); return 0; prepd_reject: - sc->scsi_done = NULL; - iscsi_complete_task(task, ISCSI_TASK_COMPLETED); + iscsi_complete_task(task, ISCSI_TASK_REQUEUE_SCSIQ); reject: - spin_unlock(&session->lock); + spin_unlock_bh(&session->lock); ISCSI_DBG_SESSION(session, "cmd 0x%x rejected (%d)\n", sc->cmnd[0], reason); - spin_lock(host->host_lock); return SCSI_MLQUEUE_TARGET_BUSY; prepd_fault: - sc->scsi_done = NULL; - iscsi_complete_task(task, ISCSI_TASK_COMPLETED); + iscsi_complete_task(task, ISCSI_TASK_REQUEUE_SCSIQ); fault: - spin_unlock(&session->lock); + spin_unlock_bh(&session->lock); ISCSI_DBG_SESSION(session, "iscsi: cmd 0x%x is not queued (%d)\n", sc->cmnd[0], reason); if (!scsi_bidi_cmnd(sc)) @@ -1733,12 +1727,9 @@ fault: scsi_out(sc)->resid = scsi_out(sc)->length; scsi_in(sc)->resid = scsi_in(sc)->length; } - done(sc); - spin_lock(host->host_lock); + sc->scsi_done(sc); return 0; } - -DEF_SCSI_QCMD(iscsi_queuecommand) EXPORT_SYMBOL_GPL(iscsi_queuecommand); int iscsi_change_queue_depth(struct scsi_device *sdev, int depth, int reason) |