IB/iser: Move informational messages from error to info level

Introduce iser_info() and move informational messages that were
printed as errors to use that macro. Also, cleanup printk leftovers to
use the existing macros.

Signed-off-by: Roi Dayan <roid@mellanox.com>
Signed-off-by: Or Gerlitz <ogerlitz@mellanox.com>

[ Use pr_warn(... instead of printk(KERN_WARNING ....  - Roland ]

Signed-off-by: Roland Dreier <roland@purestorage.com>

3 files changed, 34 insertions, 25 deletions

diff --git a/drivers/infiniband/ulp/iser/iscsi_iser.c b/drivers/infiniband/ulp/iser/iscsi_iser.c
index 69e0d7c3b149..f19b0998a53c 100644
--- a/drivers/infiniband/ulp/iser/iscsi_iser.c
+++ b/drivers/infiniband/ulp/iser/iscsi_iser.c
@@ -370,8 +370,8 @@ iscsi_iser_conn_bind(struct iscsi_cls_session *cls_session,
         /* binds the iSER connection retrieved from the previously
          * connected ep_handle to the iSCSI layer connection. exchanges
          * connection pointers */
-        iser_err("binding iscsi/iser conn %p %p to ib_conn %p\n",
-                                        conn, conn->dd_data, ib_conn);
+        iser_info("binding iscsi/iser conn %p %p to ib_conn %p\n",
+                  conn, conn->dd_data, ib_conn);
         iser_conn = conn->dd_data;
         ib_conn->iser_conn = iser_conn;
         iser_conn->ib_conn  = ib_conn;
@@ -475,28 +475,28 @@ iscsi_iser_set_param(struct iscsi_cls_conn *cls_conn,
         case ISCSI_PARAM_HDRDGST_EN:
                 sscanf(buf, "%d", &value);
                 if (value) {
-                        printk(KERN_ERR "DataDigest wasn't negotiated to None");
+                        iser_err("DataDigest wasn't negotiated to None");
                         return -EPROTO;
                 }
                 break;
         case ISCSI_PARAM_DATADGST_EN:
                 sscanf(buf, "%d", &value);
                 if (value) {
-                        printk(KERN_ERR "DataDigest wasn't negotiated to None");
+                        iser_err("DataDigest wasn't negotiated to None");
                         return -EPROTO;
                 }
                 break;
         case ISCSI_PARAM_IFMARKER_EN:
                 sscanf(buf, "%d", &value);
                 if (value) {
-                        printk(KERN_ERR "IFMarker wasn't negotiated to No");
+                        iser_err("IFMarker wasn't negotiated to No");
                         return -EPROTO;
                 }
                 break;
         case ISCSI_PARAM_OFMARKER_EN:
                 sscanf(buf, "%d", &value);
                 if (value) {
-                        printk(KERN_ERR "OFMarker wasn't negotiated to No");
+                        iser_err("OFMarker wasn't negotiated to No");
                         return -EPROTO;
                 }
                 break;
@@ -596,7 +596,7 @@ iscsi_iser_ep_poll(struct iscsi_endpoint *ep, int timeout_ms)
              ib_conn->state == ISER_CONN_DOWN))
                 rc = -1;
 
-        iser_err("ib conn %p rc = %d\n", ib_conn, rc);
+        iser_info("ib conn %p rc = %d\n", ib_conn, rc);
 
         if (rc > 0)
                 return 1; /* success, this is the equivalent of POLLOUT */
@@ -623,7 +623,7 @@ iscsi_iser_ep_disconnect(struct iscsi_endpoint *ep)
                 iscsi_suspend_tx(ib_conn->iser_conn->iscsi_conn);
 
 
-        iser_err("ib conn %p state %d\n",ib_conn, ib_conn->state);
+        iser_info("ib conn %p state %d\n", ib_conn, ib_conn->state);
         iser_conn_terminate(ib_conn);
 }
 
@@ -740,7 +740,7 @@ static int __init iser_init(void)
         iser_dbg("Starting iSER datamover...\n");
 
         if (iscsi_max_lun < 1) {
-                printk(KERN_ERR "Invalid max_lun value of %u\n", iscsi_max_lun);
+                iser_err("Invalid max_lun value of %u\n", iscsi_max_lun);
                 return -EINVAL;
         }
 
diff --git a/drivers/infiniband/ulp/iser/iscsi_iser.h b/drivers/infiniband/ulp/iser/iscsi_iser.h
index 0da04bf82044..1a570886cc03 100644
--- a/drivers/infiniband/ulp/iser/iscsi_iser.h
+++ b/drivers/infiniband/ulp/iser/iscsi_iser.h
@@ -42,6 +42,7 @@
 
 #include <linux/types.h>
 #include <linux/net.h>
+#include <linux/printk.h>
 #include <scsi/libiscsi.h>
 #include <scsi/scsi_transport_iscsi.h>
 
@@ -69,15 +70,22 @@
 
 #define iser_dbg(fmt, arg...)                           \
         do {                                            \
-                if (iser_debug_level > 1)               \
+                if (iser_debug_level > 2)               \
                         printk(KERN_DEBUG PFX "%s:" fmt,\
                                 __func__ , ## arg);     \
         } while (0)
 
 #define iser_warn(fmt, arg...)                          \
         do {                                            \
+                if (iser_debug_level > 1)               \
+                        pr_warn(PFX "%s:" fmt,          \
+                                __func__ , ## arg);     \
+        } while (0)
+
+#define iser_info(fmt, arg...)                          \
+        do {                                            \
                 if (iser_debug_level > 0)               \
-                        printk(KERN_DEBUG PFX "%s:" fmt,\
+                        pr_info(PFX "%s:" fmt,          \
                                 __func__ , ## arg);     \
         } while (0)
 
diff --git a/drivers/infiniband/ulp/iser/iser_verbs.c b/drivers/infiniband/ulp/iser/iser_verbs.c
index 4debadc53106..13838ad3ce76 100644
--- a/drivers/infiniband/ulp/iser/iser_verbs.c
+++ b/drivers/infiniband/ulp/iser/iser_verbs.c
@@ -74,8 +74,9 @@ static int iser_create_device_ib_res(struct iser_device *device)
         struct iser_cq_desc *cq_desc;
 
         device->cqs_used = min(ISER_MAX_CQ, device->ib_device->num_comp_vectors);
-        iser_err("using %d CQs, device %s supports %d vectors\n", device->cqs_used,
-                 device->ib_device->name, device->ib_device->num_comp_vectors);
+        iser_info("using %d CQs, device %s supports %d vectors\n",
+                  device->cqs_used, device->ib_device->name,
+                  device->ib_device->num_comp_vectors);
 
         device->cq_desc = kmalloc(sizeof(struct iser_cq_desc) * device->cqs_used,
                                   GFP_KERNEL);
@@ -262,7 +263,7 @@ static int iser_create_ib_conn_res(struct iser_conn *ib_conn)
                         min_index = index;
         device->cq_active_qps[min_index]++;
         mutex_unlock(&ig.connlist_mutex);
-        iser_err("cq index %d used for ib_conn %p\n", min_index, ib_conn);
+        iser_info("cq index %d used for ib_conn %p\n", min_index, ib_conn);
 
         init_attr.event_handler = iser_qp_event_callback;
         init_attr.qp_context    = (void *)ib_conn;
@@ -280,9 +281,9 @@ static int iser_create_ib_conn_res(struct iser_conn *ib_conn)
                 goto out_err;
 
         ib_conn->qp = ib_conn->cma_id->qp;
-        iser_err("setting conn %p cma_id %p: fmr_pool %p qp %p\n",
-                 ib_conn, ib_conn->cma_id,
-                 ib_conn->fmr_pool, ib_conn->cma_id->qp);
+        iser_info("setting conn %p cma_id %p: fmr_pool %p qp %p\n",
+                  ib_conn, ib_conn->cma_id,
+                  ib_conn->fmr_pool, ib_conn->cma_id->qp);
         return ret;
 
 out_err:
@@ -299,9 +300,9 @@ static int iser_free_ib_conn_res(struct iser_conn *ib_conn, int can_destroy_id)
         int cq_index;
         BUG_ON(ib_conn == NULL);
 
-        iser_err("freeing conn %p cma_id %p fmr pool %p qp %p\n",
-                 ib_conn, ib_conn->cma_id,
-                 ib_conn->fmr_pool, ib_conn->qp);
+        iser_info("freeing conn %p cma_id %p fmr pool %p qp %p\n",
+                  ib_conn, ib_conn->cma_id,
+                  ib_conn->fmr_pool, ib_conn->qp);
 
         /* qp is created only once both addr & route are resolved */
         if (ib_conn->fmr_pool != NULL)
@@ -379,7 +380,7 @@ static void iser_device_try_release(struct iser_device *device)
 {
         mutex_lock(&ig.device_list_mutex);
         device->refcount--;
-        iser_err("device %p refcount %d\n",device,device->refcount);
+        iser_info("device %p refcount %d\n", device, device->refcount);
         if (!device->refcount) {
                 iser_free_device_ib_res(device);
                 list_del(&device->ig_list);
@@ -558,8 +559,8 @@ static int iser_cma_handler(struct rdma_cm_id *cma_id, struct rdma_cm_event *eve
 {
         int ret = 0;
 
-        iser_err("event %d status %d conn %p id %p\n",
-                event->event, event->status, cma_id->context, cma_id);
+        iser_info("event %d status %d conn %p id %p\n",
+                  event->event, event->status, cma_id->context, cma_id);
 
         switch (event->event) {
         case RDMA_CM_EVENT_ADDR_RESOLVED:
@@ -619,8 +620,8 @@ int iser_connect(struct iser_conn   *ib_conn,
         /* the device is known only --after-- address resolution */
         ib_conn->device = NULL;
 
-        iser_err("connecting to: %pI4, port 0x%x\n",
-                 &dst_addr->sin_addr, dst_addr->sin_port);
+        iser_info("connecting to: %pI4, port 0x%x\n",
+                  &dst_addr->sin_addr, dst_addr->sin_port);
 
         ib_conn->state = ISER_CONN_PENDING;