s390/debug: improve debug_event

debug_event currently truncates the data if used with a size larger than
the buf_size of the debug feature. For lots of callers of this function,
wrappers have been implemented that loop until all data is handled.

Move that functionality into debug_event_common and get rid of the wrappers.

Signed-off-by: Sebastian Ott <sebott@linux.vnet.ibm.com>
Acked-by: Michael Holzheu <holzheu@linux.vnet.ibm.com>
Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>

5 files changed, 7 insertions, 41 deletions

diff --git a/drivers/s390/block/scm_blk.h b/drivers/s390/block/scm_blk.h
index 71288dd9dd7f..f9338d20858b 100644
--- a/drivers/s390/block/scm_blk.h
+++ b/drivers/s390/block/scm_blk.h
@@ -55,13 +55,7 @@ extern debug_info_t *scm_debug;
 
 static inline void SCM_LOG_HEX(int level, void *data, int length)
 {
-	if (!debug_level_enabled(scm_debug, level))
-		return;
-	while (length > 0) {
-		debug_event(scm_debug, level, data, length);
-		length -= scm_debug->buf_size;
-		data += scm_debug->buf_size;
-	}
+	debug_event(scm_debug, level, data, length);
 }
 
 static inline void SCM_LOG_STATE(int level, struct scm_device *scmdev)
diff --git a/drivers/s390/cio/chsc_sch.c b/drivers/s390/cio/chsc_sch.c
index 735052ecd3e5..8e7e19b9e92c 100644
--- a/drivers/s390/cio/chsc_sch.c
+++ b/drivers/s390/cio/chsc_sch.c
@@ -43,11 +43,7 @@ static DEFINE_MUTEX(on_close_mutex);
 
 static void CHSC_LOG_HEX(int level, void *data, int length)
 {
-	while (length > 0) {
-		debug_event(chsc_debug_log_id, level, data, length);
-		length -= chsc_debug_log_id->buf_size;
-		data += chsc_debug_log_id->buf_size;
-	}
+	debug_event(chsc_debug_log_id, level, data, length);
 }
 
 MODULE_AUTHOR("IBM Corporation");
diff --git a/drivers/s390/cio/cio_debug.h b/drivers/s390/cio/cio_debug.h
index e64e8278c42e..9fead866163f 100644
--- a/drivers/s390/cio/cio_debug.h
+++ b/drivers/s390/cio/cio_debug.h
@@ -22,13 +22,7 @@ extern debug_info_t *cio_debug_crw_id;
 
 static inline void CIO_HEX_EVENT(int level, void *data, int length)
 {
-	if (unlikely(!cio_debug_trace_id))
-		return;
-	while (length > 0) {
-		debug_event(cio_debug_trace_id, level, data, length);
-		length -= cio_debug_trace_id->buf_size;
-		data += cio_debug_trace_id->buf_size;
-	}
+	debug_event(cio_debug_trace_id, level, data, length);
 }
 
 #endif
diff --git a/drivers/s390/cio/eadm_sch.c b/drivers/s390/cio/eadm_sch.c
index 0f11f3bcac82..d14795f7110b 100644
--- a/drivers/s390/cio/eadm_sch.c
+++ b/drivers/s390/cio/eadm_sch.c
@@ -43,13 +43,7 @@ static debug_info_t *eadm_debug;
 
 static void EADM_LOG_HEX(int level, void *data, int length)
 {
-	if (!debug_level_enabled(eadm_debug, level))
-		return;
-	while (length > 0) {
-		debug_event(eadm_debug, level, data, length);
-		length -= eadm_debug->buf_size;
-		data += eadm_debug->buf_size;
-	}
+	debug_event(eadm_debug, level, data, length);
 }
 
 static void orb_init(union orb *orb)
diff --git a/drivers/s390/cio/qdio_debug.h b/drivers/s390/cio/qdio_debug.h
index 1d595d17bf11..be402da10778 100644
--- a/drivers/s390/cio/qdio_debug.h
+++ b/drivers/s390/cio/qdio_debug.h
@@ -33,11 +33,7 @@ extern debug_info_t *qdio_dbf_error;
 
 static inline void DBF_HEX(void *addr, int len)
 {
-	while (len > 0) {
-		debug_event(qdio_dbf_setup, DBF_ERR, addr, len);
-		len -= qdio_dbf_setup->buf_size;
-		addr += qdio_dbf_setup->buf_size;
-	}
+	debug_event(qdio_dbf_setup, DBF_ERR, addr, len);
 }
 
 #define DBF_ERROR(text...) \
@@ -49,11 +45,7 @@ static inline void DBF_HEX(void *addr, int len)
 
 static inline void DBF_ERROR_HEX(void *addr, int len)
 {
-	while (len > 0) {
-		debug_event(qdio_dbf_error, DBF_ERR, addr, len);
-		len -= qdio_dbf_error->buf_size;
-		addr += qdio_dbf_error->buf_size;
-	}
+	debug_event(qdio_dbf_error, DBF_ERR, addr, len);
 }
 
 #define DBF_DEV_EVENT(level, device, text...) \
@@ -68,11 +60,7 @@ static inline void DBF_ERROR_HEX(void *addr, int len)
 static inline void DBF_DEV_HEX(struct qdio_irq *dev, void *addr,
 			       int len, int level)
 {
-	while (len > 0) {
-		debug_event(dev->debug_area, level, addr, len);
-		len -= dev->debug_area->buf_size;
-		addr += dev->debug_area->buf_size;
-	}
+	debug_event(dev->debug_area, level, addr, len);
 }
 
 int qdio_allocate_dbf(struct qdio_initialize *init_data,