5 files changed, 24 insertions, 10 deletions

diff --git a/drivers/s390/block/dasd_devmap.c b/drivers/s390/block/dasd_devmap.c
index 34d51dd4c539..bed7b4634ccd 100644
--- a/drivers/s390/block/dasd_devmap.c
+++ b/drivers/s390/block/dasd_devmap.c
@@ -948,8 +948,10 @@ static ssize_t dasd_alias_show(struct device *dev,
         if (device->discipline && device->discipline->get_uid &&
             !device->discipline->get_uid(device, &uid)) {
                 if (uid.type == UA_BASE_PAV_ALIAS ||
-                    uid.type == UA_HYPER_PAV_ALIAS)
+                    uid.type == UA_HYPER_PAV_ALIAS) {
+                        dasd_put_device(device);
                         return sprintf(buf, "1\n");
+                }
         }
         dasd_put_device(device);
 
diff --git a/drivers/s390/cio/chsc.c b/drivers/s390/cio/chsc.c
index ce7cb87479fe..407d0e9adfaf 100644
--- a/drivers/s390/cio/chsc.c
+++ b/drivers/s390/cio/chsc.c
@@ -713,7 +713,7 @@ int chsc_determine_base_channel_path_desc(struct chp_id chpid,
         ret = chsc_determine_channel_path_desc(chpid, 0, 0, 0, 0, chsc_resp);
         if (ret)
                 goto out_free;
-        memcpy(desc, &chsc_resp->data, chsc_resp->length);
+        memcpy(desc, &chsc_resp->data, sizeof(*desc));
 out_free:
         kfree(chsc_resp);
         return ret;
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);