1 files changed, 45 insertions, 27 deletions

diff --git a/drivers/s390/net/ctcm_main.c b/drivers/s390/net/ctcm_main.c
index a4e29836a2aa..2678573becec 100644
--- a/drivers/s390/net/ctcm_main.c
+++ b/drivers/s390/net/ctcm_main.c
@@ -21,6 +21,9 @@
 #undef DEBUGDATA
 #undef DEBUGCCW
 
+#define KMSG_COMPONENT "ctcm"
+#define pr_fmt(fmt) KMSG_COMPONENT ": " fmt
+
 #include <linux/module.h>
 #include <linux/init.h>
 #include <linux/kernel.h>
@@ -281,14 +284,16 @@ static long ctcm_check_irb_error(struct ccw_device *cdev, struct irb *irb)
 
         switch (PTR_ERR(irb)) {
         case -EIO:
-                ctcm_pr_warn("i/o-error on device %s\n", dev_name(&cdev->dev));
+                dev_err(&cdev->dev,
+                        "An I/O-error occurred on the CTCM device\n");
                 break;
         case -ETIMEDOUT:
-                ctcm_pr_warn("timeout on device %s\n", dev_name(&cdev->dev));
+                dev_err(&cdev->dev,
+                        "An adapter hardware operation timed out\n");
                 break;
         default:
-                ctcm_pr_warn("unknown error %ld on device %s\n",
-                                PTR_ERR(irb), dev_name(&cdev->dev));
+                dev_err(&cdev->dev,
+                        "An error occurred on the adapter hardware\n");
         }
         return PTR_ERR(irb);
 }
@@ -309,15 +314,17 @@ static inline void ccw_unit_check(struct channel *ch, __u8 sense)
         if (sense & SNS0_INTERVENTION_REQ) {
                 if (sense & 0x01) {
                         if (ch->sense_rc != 0x01) {
-                                ctcm_pr_debug("%s: Interface disc. or Sel. "
-                                              "reset (remote)\n", ch->id);
+                                pr_notice(
+                                        "%s: The communication peer has "
+                                        "disconnected\n", ch->id);
                                 ch->sense_rc = 0x01;
                         }
                         fsm_event(ch->fsm, CTC_EVENT_UC_RCRESET, ch);
                 } else {
                         if (ch->sense_rc != SNS0_INTERVENTION_REQ) {
-                                ctcm_pr_debug("%s: System reset (remote)\n",
-                                              ch->id);
+                                pr_notice(
+                                        "%s: The remote operating system is "
+                                        "not available\n", ch->id);
                                 ch->sense_rc = SNS0_INTERVENTION_REQ;
                         }
                         fsm_event(ch->fsm, CTC_EVENT_UC_RSRESET, ch);
@@ -1194,8 +1201,11 @@ static void ctcm_irq_handler(struct ccw_device *cdev,
 
         /* Check for unsolicited interrupts. */
         if (cgdev == NULL) {
-                ctcm_pr_warn("ctcm: Got unsolicited irq: c-%02x d-%02x\n",
-                             cstat, dstat);
+                CTCM_DBF_TEXT_(TRACE, CTC_DBF_ERROR,
+                        "%s(%s) unsolicited irq: c-%02x d-%02x\n",
+                        CTCM_FUNTAIL, dev_name(&cdev->dev), cstat, dstat);
+                dev_warn(&cdev->dev,
+                        "The adapter received a non-specific IRQ\n");
                 return;
         }
 
@@ -1207,31 +1217,34 @@ static void ctcm_irq_handler(struct ccw_device *cdev,
         else if (priv->channel[WRITE]->cdev == cdev)
                 ch = priv->channel[WRITE];
         else {
-                ctcm_pr_err("ctcm: Can't determine channel for interrupt, "
-                           "device %s\n", dev_name(&cdev->dev));
+                dev_err(&cdev->dev,
+                        "%s: Internal error: Can't determine channel for "
+                        "interrupt device %s\n",
+                        __func__, dev_name(&cdev->dev));
+                        /* Explain: inconsistent internal structures */
                 return;
         }
 
         dev = ch->netdev;
         if (dev == NULL) {
-                ctcm_pr_crit("ctcm: %s dev=NULL bus_id=%s, ch=0x%p\n",
-                                __func__, dev_name(&cdev->dev), ch);
+                dev_err(&cdev->dev,
+                        "%s Internal error: net_device is NULL, ch = 0x%p\n",
+                        __func__, ch);
+                        /* Explain: inconsistent internal structures */
                 return;
         }
 
-        CTCM_DBF_TEXT_(TRACE, CTC_DBF_DEBUG,
-                "%s(%s): int. for %s: cstat=%02x dstat=%02x",
-                        CTCM_FUNTAIL, dev->name, ch->id, cstat, dstat);
-
         /* Copy interruption response block. */
         memcpy(ch->irb, irb, sizeof(struct irb));
 
+        /* Issue error message and return on subchannel error code */
         if (irb->scsw.cmd.cstat) {
-        /* Check for good subchannel return code, otherwise error message */
                 fsm_event(ch->fsm, CTC_EVENT_SC_UNKNOWN, ch);
-                ctcm_pr_warn("%s: subchannel check for dev: %s - %02x %02x\n",
-                            dev->name, ch->id, irb->scsw.cmd.cstat,
-                            irb->scsw.cmd.dstat);
+                CTCM_DBF_TEXT_(TRACE, CTC_DBF_WARN,
+                        "%s(%s): sub-ch check %s: cs=%02x ds=%02x",
+                                CTCM_FUNTAIL, dev->name, ch->id, cstat, dstat);
+                dev_warn(&cdev->dev,
+                                "A check occurred on the subchannel\n");
                 return;
         }
 
@@ -1239,7 +1252,7 @@ static void ctcm_irq_handler(struct ccw_device *cdev,
         if (irb->scsw.cmd.dstat & DEV_STAT_UNIT_CHECK) {
                 if ((irb->ecw[0] & ch->sense_rc) == 0)
                         /* print it only once */
-                        CTCM_DBF_TEXT_(TRACE, CTC_DBF_INFO,
+                        CTCM_DBF_TEXT_(TRACE, CTC_DBF_WARN,
                                 "%s(%s): sense=%02x, ds=%02x",
                                 CTCM_FUNTAIL, ch->id, irb->ecw[0], dstat);
                 ccw_unit_check(ch, irb->ecw[0]);
@@ -1574,6 +1587,11 @@ static int ctcm_new_device(struct ccwgroup_device *cgdev)
 
         strlcpy(priv->fsm->name, dev->name, sizeof(priv->fsm->name));
 
+        dev_info(&dev->dev,
+                "setup OK : r/w = %s/%s, protocol : %d\n",
+                        priv->channel[READ]->id,
+                        priv->channel[WRITE]->id, priv->protocol);
+
         CTCM_DBF_TEXT_(SETUP, CTC_DBF_INFO,
                 "setup(%s) OK : r/w = %s/%s, protocol : %d", dev->name,
                         priv->channel[READ]->id,
@@ -1687,7 +1705,7 @@ static void __exit ctcm_exit(void)
 {
         unregister_cu3088_discipline(&ctcm_group_driver);
         ctcm_unregister_dbf_views();
-        ctcm_pr_info("CTCM driver unloaded\n");
+        pr_info("CTCM driver unloaded\n");
 }
 
 /*
@@ -1695,7 +1713,7 @@ static void __exit ctcm_exit(void)
  */
 static void print_banner(void)
 {
-        printk(KERN_INFO "CTCM driver initialized\n");
+        pr_info("CTCM driver initialized\n");
 }
 
 /**
@@ -1717,8 +1735,8 @@ static int __init ctcm_init(void)
         ret = register_cu3088_discipline(&ctcm_group_driver);
         if (ret) {
                 ctcm_unregister_dbf_views();
-                ctcm_pr_crit("ctcm_init failed with register_cu3088_discipline "
-                                "(rc = %d)\n", ret);
+                pr_err("%s / register_cu3088_discipline failed, ret = %d\n",
+                        __func__, ret);
                 return ret;
         }
         print_banner();