[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Fix outdated comments for cio_debug_init() and clean it up.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>

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