diff --git a/drivers/Makefile b/drivers/Makefile
index 53eff3f11d29b5e9e89d526557c1e74355eb94b4..55e7030158fe3ab48f5f39a144824dc061191004 100644
--- a/drivers/Makefile
+++ b/drivers/Makefile
@@ -44,7 +44,7 @@ AOBJS		= $(ASRCS:.S=$(OBJEXT))
 
 CSRCS		=
 ifneq ($(CONFIG_NFILE_DESCRIPTORS),0)
-CSRCS		+= dev_null.c dev_zero.c pipe.c fifo.c pipe-common.c serial.c lowconsole.c can.c
+CSRCS		+= dev_null.c dev_zero.c pipe.c fifo.c pipe_common.c serial.c lowconsole.c can.c
 ifneq ($(CONFIG_DISABLE_MOUNTPOINT),y)
 CSRCS           += ramdisk.c
 endif
diff --git a/drivers/fifo.c b/drivers/fifo.c
index 9ad64dbcb2ebf25aba2f450a49c44a61b4fbfbfa..2465d41dcc2d0f075cbda58d5056ce05485cf3f9 100644
--- a/drivers/fifo.c
+++ b/drivers/fifo.c
@@ -47,7 +47,7 @@
 #include <nuttx/fs.h>
 #include <errno.h>
 
-#include "pipe-common.h"
+#include "pipe_common.h"
 
 #if CONFIG_DEV_PIPE_SIZE > 0
 
diff --git a/drivers/pipe.c b/drivers/pipe.c
index 5e0b2f6e5a299d7c0e3da52cef41244c9e156c12..677bcfe4cdf0d0c57cb515a991d0d297655557ab 100644
--- a/drivers/pipe.c
+++ b/drivers/pipe.c
@@ -51,7 +51,7 @@
 #include <fcntl.h>
 #include <errno.h>
 
-#include "pipe-common.h"
+#include "pipe_common.h"
 
 #if CONFIG_DEV_PIPE_SIZE > 0
 
@@ -178,7 +178,7 @@ static int pipe_close(FAR struct file *filep)
  ****************************************************************************/
 int pipe(int filedes[2])
 {
-  struct pipe_dev_s *dev;
+  struct pipe_dev_s *dev = NULL;
   char devname[16];
   int pipeno;
   int err;
diff --git a/drivers/pipe-common.c b/drivers/pipe_common.c
similarity index 99%
rename from drivers/pipe-common.c
rename to drivers/pipe_common.c
index 198d9d12981b8b600125ac933fbda4d8b8561204..59b9f79c8ed816891797a6698d99ab130a0aedc1 100644
--- a/drivers/pipe-common.c
+++ b/drivers/pipe_common.c
@@ -1,5 +1,5 @@
 /****************************************************************************
- * drivers/pipe-common.c
+ * drivers/pipe_common.c
  *
  *   Copyright (C) 2008 Gregory Nutt. All rights reserved.
  *   Author: Gregory Nutt <spudmonkey@racsa.co.cr>
@@ -54,7 +54,7 @@
 #include <assert.h>
 #include <nuttx/fs.h>
 
-#include "pipe-common.h"
+#include "pipe_common.h"
 
 #if CONFIG_DEV_PIPE_SIZE > 0
 
@@ -83,6 +83,7 @@ static void pipecommon_semtake(sem_t *sem);
 /****************************************************************************
  * Name: pipecommon_semtake
  ****************************************************************************/
+
 static void pipecommon_semtake(sem_t *sem)
 {
   while (sem_wait(sem) != 0)
@@ -102,6 +103,7 @@ static void pipecommon_semtake(sem_t *sem)
 /****************************************************************************
  * Name: pipecommon_allocdev
  ****************************************************************************/
+
 FAR struct pipe_dev_s *pipecommon_allocdev(void)
 {
  struct pipe_dev_s *dev;
@@ -124,7 +126,8 @@ FAR struct pipe_dev_s *pipecommon_allocdev(void)
 /****************************************************************************
  * Name: pipecommon_freedev
  ****************************************************************************/
- void pipecommon_freedev(FAR struct pipe_dev_s *dev)
+
+void pipecommon_freedev(FAR struct pipe_dev_s *dev)
 {
    sem_destroy(&dev->d_bfsem);
    sem_destroy(&dev->d_rdsem);
@@ -135,6 +138,7 @@ FAR struct pipe_dev_s *pipecommon_allocdev(void)
 /****************************************************************************
  * Name: pipecommon_open
  ****************************************************************************/
+
 int pipecommon_open(FAR struct file *filep)
 {
   struct inode      *inode = filep->f_inode;
@@ -212,6 +216,7 @@ int pipecommon_open(FAR struct file *filep)
 /****************************************************************************
  * Name: pipecommon_close
  ****************************************************************************/
+
 int pipecommon_close(FAR struct file *filep)
 {
   struct inode      *inode = filep->f_inode;
@@ -280,6 +285,7 @@ int pipecommon_close(FAR struct file *filep)
 /****************************************************************************
  * Name: pipecommon_read
  ****************************************************************************/
+
 ssize_t pipecommon_read(FAR struct file *filep, FAR char *buffer, size_t len)
 {
   struct inode      *inode  = filep->f_inode;
@@ -362,6 +368,7 @@ ssize_t pipecommon_read(FAR struct file *filep, FAR char *buffer, size_t len)
 /****************************************************************************
  * Name: pipecommon_write
  ****************************************************************************/
+
 ssize_t pipecommon_write(FAR struct file *filep, FAR const char *buffer, size_t len)
 {
   struct inode      *inode    = filep->f_inode;
diff --git a/drivers/pipe-common.h b/drivers/pipe_common.h
similarity index 99%
rename from drivers/pipe-common.h
rename to drivers/pipe_common.h
index 12fd72222693095c2d15670fb1981ae33a06326b..34bde18c37766400c9b7a242636acfbe4eb2b214 100644
--- a/drivers/pipe-common.h
+++ b/drivers/pipe_common.h
@@ -1,5 +1,5 @@
 /****************************************************************************
- * drivers/pipe-common.h
+ * drivers/pipe_common.h
  *
  *   Copyright (C) 2008 Gregory Nutt. All rights reserved.
  *   Author: Gregory Nutt <spudmonkey@racsa.co.cr>