[S390] cio: Cleanup debug feature usage.

Cleanup cio_debug.h.
Also make CIO_DEBUG add the "cio:" prefix to the printk string
so that it isn't needed for the debug feature.
Fix outdated comments for cio_debug_init() and clean it up.
Enlarge cio_crw to the same size as cio_msg so we may actually
find some relevant information there.

Signed-off-by: Cornelia Huck <cornelia.huck@de.ibm.com>
Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>

3 files changed, 33 insertions, 35 deletions

diff --git a/drivers/s390/cio/cio.c b/drivers/s390/cio/cio.c
index 469b00774c5e..cd5475b82420 100644
--- a/drivers/s390/cio/cio.c
+++ b/drivers/s390/cio/cio.c
@@ -56,39 +56,37 @@ __setup ("cio_msg=", cio_setup);
 
 /*
  * Function: cio_debug_init
- * Initializes three debug logs (under /proc/s390dbf) for common I/O:
- * - cio_msg logs the messages which are printk'ed when CONFIG_DEBUG_IO is on
+ * Initializes three debug logs for common I/O:
+ * - cio_msg logs generic cio messages
  * - cio_trace logs the calling of different functions
- * - cio_crw logs the messages which are printk'ed when CONFIG_DEBUG_CRW is on
- * debug levels depend on CONFIG_DEBUG_IO resp. CONFIG_DEBUG_CRW
+ * - cio_crw logs machine check related cio messages
  */
-static int __init
-cio_debug_init (void)
+static int __init cio_debug_init(void)
 {
-        cio_debug_msg_id = debug_register ("cio_msg", 16, 4, 16*sizeof (long));
+        cio_debug_msg_id = debug_register("cio_msg", 16, 4, 16 * sizeof(long));
         if (!cio_debug_msg_id)
                 goto out_unregister;
-        debug_register_view (cio_debug_msg_id, &debug_sprintf_view);
-        debug_set_level (cio_debug_msg_id, 2);
-        cio_debug_trace_id = debug_register ("cio_trace", 16, 4, 16);
+        debug_register_view(cio_debug_msg_id, &debug_sprintf_view);
+        debug_set_level(cio_debug_msg_id, 2);
+        cio_debug_trace_id = debug_register("cio_trace", 16, 4, 16);
         if (!cio_debug_trace_id)
                 goto out_unregister;
-        debug_register_view (cio_debug_trace_id, &debug_hex_ascii_view);
-        debug_set_level (cio_debug_trace_id, 2);
-        cio_debug_crw_id = debug_register ("cio_crw", 4, 4, 16*sizeof (long));
+        debug_register_view(cio_debug_trace_id, &debug_hex_ascii_view);
+        debug_set_level(cio_debug_trace_id, 2);
+        cio_debug_crw_id = debug_register("cio_crw", 16, 4, 16 * sizeof(long));
         if (!cio_debug_crw_id)
                 goto out_unregister;
-        debug_register_view (cio_debug_crw_id, &debug_sprintf_view);
-        debug_set_level (cio_debug_crw_id, 2);
+        debug_register_view(cio_debug_crw_id, &debug_sprintf_view);
+        debug_set_level(cio_debug_crw_id, 4);
         return 0;
 
 out_unregister:
         if (cio_debug_msg_id)
-                debug_unregister (cio_debug_msg_id);
+                debug_unregister(cio_debug_msg_id);
         if (cio_debug_trace_id)
-                debug_unregister (cio_debug_trace_id);
+                debug_unregister(cio_debug_trace_id);
         if (cio_debug_crw_id)
-                debug_unregister (cio_debug_crw_id);
+                debug_unregister(cio_debug_crw_id);
         printk(KERN_WARNING"cio: could not initialize debugging\n");
         return -1;
 }
@@ -567,7 +565,7 @@ cio_validate_subchannel (struct subchannel *sch, struct subchannel_id schid)
          */
         if (sch->st != 0) {
                 CIO_DEBUG(KERN_INFO, 0,
-                          "cio: Subchannel 0.%x.%04x reports "
+                          "Subchannel 0.%x.%04x reports "
                           "non-I/O subchannel type %04X\n",
                           sch->schid.ssid, sch->schid.sch_no, sch->st);
                 /* We stop here for non-io subchannels. */
@@ -600,7 +598,7 @@ cio_validate_subchannel (struct subchannel *sch, struct subchannel_id schid)
         sch->lpm = sch->schib.pmcw.pam & sch->opm;
 
         CIO_DEBUG(KERN_INFO, 0,
-                  "cio: Detected device %04x on subchannel 0.%x.%04X"
+                  "Detected device %04x on subchannel 0.%x.%04X"
                   " - PIM = %02X, PAM = %02X, POM = %02X\n",
                   sch->schib.pmcw.dev, sch->schid.ssid,
                   sch->schid.sch_no, sch->schib.pmcw.pim,
diff --git a/drivers/s390/cio/cio_debug.h b/drivers/s390/cio/cio_debug.h
index c9bf8989930f..d7429ef6c666 100644
--- a/drivers/s390/cio/cio_debug.h
+++ b/drivers/s390/cio/cio_debug.h
@@ -8,20 +8,19 @@ extern debug_info_t *cio_debug_msg_id;
 extern debug_info_t *cio_debug_trace_id;
 extern debug_info_t *cio_debug_crw_id;
 
-#define CIO_TRACE_EVENT(imp, txt) do { \
+#define CIO_TRACE_EVENT(imp, txt) do {                          \
                 debug_text_event(cio_debug_trace_id, imp, txt); \
         } while (0)
 
-#define CIO_MSG_EVENT(imp, args...) do { \
-                debug_sprintf_event(cio_debug_msg_id, imp , ##args); \
+#define CIO_MSG_EVENT(imp, args...) do {                                \
+                debug_sprintf_event(cio_debug_msg_id, imp , ##args);    \
         } while (0)
 
-#define CIO_CRW_EVENT(imp, args...) do { \
-                debug_sprintf_event(cio_debug_crw_id, imp , ##args); \
+#define CIO_CRW_EVENT(imp, args...) do {                                \
+                debug_sprintf_event(cio_debug_crw_id, imp , ##args);    \
         } while (0)
 
-static inline void
-CIO_HEX_EVENT(int level, void *data, int length)
+static inline void CIO_HEX_EVENT(int level, void *data, int length)
 {
         if (unlikely(!cio_debug_trace_id))
                 return;
@@ -32,9 +31,10 @@ CIO_HEX_EVENT(int level, void *data, int length)
         }
 }
 
-#define CIO_DEBUG(printk_level,event_level,msg...) ({ \
-        if (cio_show_msg) printk(printk_level msg); \
-        CIO_MSG_EVENT (event_level, msg); \
-})
+#define CIO_DEBUG(printk_level, event_level, msg...) do {       \
+                if (cio_show_msg)                               \
+                        printk(printk_level "cio: " msg);       \
+                CIO_MSG_EVENT(event_level, msg);                \
+        } while (0)
 
 #endif
diff --git a/drivers/s390/cio/device_fsm.c b/drivers/s390/cio/device_fsm.c
index baca6c6c9855..8b6be2142c81 100644
--- a/drivers/s390/cio/device_fsm.c
+++ b/drivers/s390/cio/device_fsm.c
@@ -318,7 +318,7 @@ ccw_device_recog_done(struct ccw_device *cdev, int state)
         switch (state) {
         case DEV_STATE_NOT_OPER:
                 CIO_DEBUG(KERN_WARNING, 2,
-                          "cio: SenseID : unknown device %04x on subchannel "
+                          "SenseID : unknown device %04x on subchannel "
                           "0.%x.%04x\n", cdev->private->dev_id.devno,
                           sch->schid.ssid, sch->schid.sch_no);
                 break;
@@ -344,7 +344,7 @@ ccw_device_recog_done(struct ccw_device *cdev, int state)
                 }
                 /* Issue device info message. */
                 CIO_DEBUG(KERN_INFO, 2,
-                          "cio: SenseID : device 0.%x.%04x reports: "
+                          "SenseID : device 0.%x.%04x reports: "
                           "CU  Type/Mod = %04X/%02X, Dev Type/Mod = "
                           "%04X/%02X\n",
                           cdev->private->dev_id.ssid,
@@ -354,7 +354,7 @@ ccw_device_recog_done(struct ccw_device *cdev, int state)
                 break;
         case DEV_STATE_BOXED:
                 CIO_DEBUG(KERN_WARNING, 2,
-                          "cio: SenseID : boxed device %04x on subchannel "
+                          "SenseID : boxed device %04x on subchannel "
                           "0.%x.%04x\n", cdev->private->dev_id.devno,
                           sch->schid.ssid, sch->schid.sch_no);
                 break;
@@ -439,7 +439,7 @@ ccw_device_done(struct ccw_device *cdev, int state)
 
         if (state == DEV_STATE_BOXED)
                 CIO_DEBUG(KERN_WARNING, 2,
-                          "cio: Boxed device %04x on subchannel %04x\n",
+                          "Boxed device %04x on subchannel %04x\n",
                           cdev->private->dev_id.devno, sch->schid.sch_no);
 
         if (cdev->private->flags.donotify) {