3 files changed, 20 insertions, 8 deletions

diff --git a/drivers/s390/scsi/zfcp_erp.c b/drivers/s390/scsi/zfcp_erp.c
index e3dbeda97179..fd068bc1bd0a 100644
--- a/drivers/s390/scsi/zfcp_erp.c
+++ b/drivers/s390/scsi/zfcp_erp.c
@@ -714,6 +714,14 @@ static int zfcp_erp_adapter_strategy_open_fsf(struct zfcp_erp_action *act)
 	if (zfcp_erp_adapter_strategy_open_fsf_xport(act) == ZFCP_ERP_FAILED)
 		return ZFCP_ERP_FAILED;
 
+	if (mempool_resize(act->adapter->pool.status_read_data,
+			   act->adapter->stat_read_buf_num, GFP_KERNEL))
+		return ZFCP_ERP_FAILED;
+
+	if (mempool_resize(act->adapter->pool.status_read_req,
+			   act->adapter->stat_read_buf_num, GFP_KERNEL))
+		return ZFCP_ERP_FAILED;
+
 	atomic_set(&act->adapter->stat_miss, act->adapter->stat_read_buf_num);
 	if (zfcp_status_read_refill(act->adapter))
 		return ZFCP_ERP_FAILED;
diff --git a/drivers/s390/scsi/zfcp_fsf.c b/drivers/s390/scsi/zfcp_fsf.c
index 9ac6a6e4a604..71663fb77310 100644
--- a/drivers/s390/scsi/zfcp_fsf.c
+++ b/drivers/s390/scsi/zfcp_fsf.c
@@ -496,7 +496,8 @@ static int zfcp_fsf_exchange_config_evaluate(struct zfcp_fsf_req *req)
 
 	adapter->hydra_version = bottom->adapter_type;
 	adapter->timer_ticks = bottom->timer_interval;
-	adapter->stat_read_buf_num = max(bottom->status_read_buf_num, (u16)16);
+	adapter->stat_read_buf_num = max(bottom->status_read_buf_num,
+					 (u16)FSF_STATUS_READS_RECOM);
 
 	if (fc_host_permanent_port_name(shost) == -1)
 		fc_host_permanent_port_name(shost) = fc_host_port_name(shost);
@@ -719,11 +720,6 @@ static struct zfcp_fsf_req *zfcp_fsf_req_create(struct zfcp_qdio *qdio,
 	zfcp_qdio_req_init(adapter->qdio, &req->qdio_req, req->req_id, sbtype,
 			   req->qtcb, sizeof(struct fsf_qtcb));
 
-	if (!(atomic_read(&adapter->status) & ZFCP_STATUS_ADAPTER_QDIOUP)) {
-		zfcp_fsf_req_free(req);
-		return ERR_PTR(-EIO);
-	}
-
 	return req;
 }
 
@@ -981,7 +977,7 @@ static int zfcp_fsf_setup_ct_els_sbals(struct zfcp_fsf_req *req,
 	}
 
 	/* use single, unchained SBAL if it can hold the request */
-	if (zfcp_qdio_sg_one_sbale(sg_req) || zfcp_qdio_sg_one_sbale(sg_resp)) {
+	if (zfcp_qdio_sg_one_sbale(sg_req) && zfcp_qdio_sg_one_sbale(sg_resp)) {
 		zfcp_fsf_setup_ct_els_unchained(adapter->qdio, &req->qdio_req,
 						sg_req, sg_resp);
 		return 0;
diff --git a/drivers/s390/scsi/zfcp_qdio.c b/drivers/s390/scsi/zfcp_qdio.c
index 28117e130e2c..6fa5e0453176 100644
--- a/drivers/s390/scsi/zfcp_qdio.c
+++ b/drivers/s390/scsi/zfcp_qdio.c
@@ -251,7 +251,8 @@ static int zfcp_qdio_sbal_check(struct zfcp_qdio *qdio)
 	struct zfcp_qdio_queue *req_q = &qdio->req_q;
 
 	spin_lock_bh(&qdio->req_q_lock);
-	if (atomic_read(&req_q->count))
+	if (atomic_read(&req_q->count) ||
+	    !(atomic_read(&qdio->adapter->status) & ZFCP_STATUS_ADAPTER_QDIOUP))
 		return 1;
 	spin_unlock_bh(&qdio->req_q_lock);
 	return 0;
@@ -274,8 +275,13 @@ int zfcp_qdio_sbal_get(struct zfcp_qdio *qdio)
 	spin_unlock_bh(&qdio->req_q_lock);
 	ret = wait_event_interruptible_timeout(qdio->req_q_wq,
 			       zfcp_qdio_sbal_check(qdio), 5 * HZ);
+
+	if (!(atomic_read(&qdio->adapter->status) & ZFCP_STATUS_ADAPTER_QDIOUP))
+		return -EIO;
+
 	if (ret > 0)
 		return 0;
+
 	if (!ret) {
 		atomic_inc(&qdio->req_q_full);
 		/* assume hanging outbound queue, try queue recovery */
@@ -375,6 +381,8 @@ void zfcp_qdio_close(struct zfcp_qdio *qdio)
 	atomic_clear_mask(ZFCP_STATUS_ADAPTER_QDIOUP, &qdio->adapter->status);
 	spin_unlock_bh(&qdio->req_q_lock);
 
+	wake_up(&qdio->req_q_wq);
+
 	qdio_shutdown(qdio->adapter->ccw_device,
 		      QDIO_FLAG_CLEANUP_USING_CLEAR);