[PATCH 27/40] scsi: qedi: use task lock when checking task state

[Mike Christie <michael.christie@xxxxxxxxxx>]

Convert qedi to check for task->sc instead of SCp.ptr and use the task
lock when grabbing a ref to the task.

Signed-off-by: Mike Christie <michael.christie@xxxxxxxxxx>
---
 drivers/scsi/qedi/qedi_fw.c    |  2 +-
 drivers/scsi/qedi/qedi_iscsi.c | 15 +++++----------
 2 files changed, 6 insertions(+), 11 deletions(-)

diff --git a/drivers/scsi/qedi/qedi_fw.c b/drivers/scsi/qedi/qedi_fw.c
index e28dc249c9f0..de5133be1c4b 100644
--- a/drivers/scsi/qedi/qedi_fw.c
+++ b/drivers/scsi/qedi/qedi_fw.c
@@ -594,7 +594,7 @@ static void qedi_scsi_completion(struct qedi_ctx *qedi,
 		goto error;
 	}
 
-	if (!sc_cmd->SCp.ptr) {
+	if (!task->sc) {
 		QEDI_WARN(&qedi->dbg_ctx,
 			  "SCp.ptr is NULL, returned in another context.\n");
 		goto error;
diff --git a/drivers/scsi/qedi/qedi_iscsi.c b/drivers/scsi/qedi/qedi_iscsi.c
index 0f3704c4c985..77f0445c0198 100644
--- a/drivers/scsi/qedi/qedi_iscsi.c
+++ b/drivers/scsi/qedi/qedi_iscsi.c
@@ -47,15 +47,10 @@ static int qedi_eh_abort(struct scsi_cmnd *cmd)
 {
 	struct Scsi_Host *shost = cmd->device->host;
 	struct qedi_ctx *qedi = iscsi_host_priv(shost);
-	struct iscsi_cls_session *cls_session;
-	struct iscsi_session *session;
 	struct qedi_conn *qedi_conn;
 	struct iscsi_task *task;
 	int rc;
 
-	cls_session = starget_to_session(scsi_target(cmd->device));
-	session = cls_session->dd_data;
-
 	if (qedi_do_not_recover) {
 		QEDI_ERR(&qedi->dbg_ctx, "dont send cleanup/abort %d\n",
 			 qedi_do_not_recover);
@@ -63,15 +58,15 @@ static int qedi_eh_abort(struct scsi_cmnd *cmd)
 	}
 
 	/* check if we raced, task just got cleaned up under us */
-	spin_lock_bh(&session->back_lock);
-	task = (struct iscsi_task *)cmd->SCp.ptr;
-	if (!task || !task->sc) {
-		spin_unlock_bh(&session->back_lock);
+	task = scsi_cmd_priv(cmd);
+	spin_lock_bh(&task->lock);
+	if (!task->sc || iscsi_task_is_completed(task)) {
+		spin_unlock_bh(&task->lock);
 		return SUCCESS;
 	}
 
 	__iscsi_get_task(task);
-	spin_unlock_bh(&session->back_lock);
+	spin_unlock_bh(&task->lock);
 
 	qedi_conn = task->conn->dd_data;
 	set_bit(QEDI_CONN_FW_CLEANUP, &qedi_conn->flags);
-- 
2.25.1