---

yaml
---
r: 144441
b: refs/heads/master
c: 7001f0c
h: refs/heads/master
i:
  144439: 55578fc
v: v3

[refs]

@@ -1,2 +1,2 @@
 ---
-refs/heads/master: c6936e7f34383db2f5038dfa2f0c168ebc2920e5
+refs/heads/master: 7001f0c4863230dd1560425fa0f5aad9e21716b8

trunk/drivers/s390/scsi/zfcp_fsf.c

@@ -645,30 +645,30 @@ static void zfcp_fsf_exchange_port_data_handler(struct zfcp_fsf_req *req)
 	}
 }
 
-static int zfcp_fsf_req_sbal_get(struct zfcp_adapter *adapter)
-	__releases(&adapter->req_q_lock)
-	__acquires(&adapter->req_q_lock)
+static int zfcp_fsf_sbal_check(struct zfcp_adapter *adapter)
 {
 	struct zfcp_qdio_queue *req_q = &adapter->req_q;
-	long ret;
 
-	if (atomic_read(&req_q->count) <= -REQUEST_LIST_SIZE)
-		return -EIO;
-	if (atomic_read(&req_q->count) > 0)
-		return 0;
+	spin_lock_bh(&adapter->req_q_lock);
+	if (atomic_read(&req_q->count))
+		return 1;
+	spin_unlock_bh(&adapter->req_q_lock);
+	return 0;
+}
+
+static int zfcp_fsf_req_sbal_get(struct zfcp_adapter *adapter)
+{
+	long ret;
 
-	atomic_dec(&req_q->count);
 	spin_unlock_bh(&adapter->req_q_lock);
 	ret = wait_event_interruptible_timeout(adapter->request_wq,
-					atomic_read(&req_q->count) >= 0,
-					5 * HZ);
-	spin_lock_bh(&adapter->req_q_lock);
-	atomic_inc(&req_q->count);
-
+			       zfcp_fsf_sbal_check(adapter), 5 * HZ);
 	if (ret > 0)
 		return 0;
 	if (!ret)
 		atomic_inc(&adapter->qdio_outb_full);
+
+	spin_lock_bh(&adapter->req_q_lock);
 	return -EIO;
 }