diff --git a/nuttx/drivers/power/max1704x.c b/nuttx/drivers/power/max1704x.c
index d442bd8c16..01a66d80c3 100644
--- a/nuttx/drivers/power/max1704x.c
+++ b/nuttx/drivers/power/max1704x.c
@@ -525,7 +525,9 @@ FAR struct battery_dev_s *max1704x_initialize(FAR struct i2c_dev_s *i2c,
                             uint8_t addr, uint32_t frequency)
 {
   FAR struct max1704x_dev_s *priv;
+#if 0
   int ret;
+#endif
 
   /* Initialize the MAX1704x device structure */
 
diff --git a/nuttx/drivers/usbdev/cdcacm.c b/nuttx/drivers/usbdev/cdcacm.c
index c203d54155..aeea60ce80 100644
--- a/nuttx/drivers/usbdev/cdcacm.c
+++ b/nuttx/drivers/usbdev/cdcacm.c
@@ -2049,7 +2049,6 @@ errout_with_class:
 int cdcser_initialize(int minor)
 {
   FAR struct usbdevclass_driver_s *drvr;
-  FAR struct cdcser_dev_s *priv;
   int ret;
 
   /* Get an instance of the serial driver class object */
@@ -2068,3 +2067,42 @@ int cdcser_initialize(int minor)
   return ret;
 }
 #endif
+
+/****************************************************************************
+ * Name: cdcser_uninitialize
+ *
+ * Description:
+ *   Un-initialize the USB storage class driver
+ *
+ * Input Parameters:
+ *   handle - The handle returned by a previous call to cdcser_configure().
+ *
+ * Returned Value:
+ *   None
+ *
+ ****************************************************************************/
+
+#ifndef CONFIG_CDCSER_COMPOSITE
+void cdcser_uninitialize(FAR struct usbdevclass_driver_s *classdev)
+{
+  FAR struct cdcser_driver_s *drvr = (FAR struct cdcser_driver_s *)classdev;
+  FAR struct cdcser_dev_s    *priv = drvr->dev;
+
+  /* Unbind the class (if still bound) */
+
+  if (priv->usbdev)
+    {
+       cdcser_unbind(Fpriv->usbdev);
+    }
+
+  /* Unregister the driver (unless we are a part of a composite device */
+
+#ifndef CONFIG_CDCSER_COMPOSITE
+  usbdev_unregister(&alloc->drvr.drvr);
+#endif
+
+  /* And free the driver structure */
+
+  kfree(priv);
+}
+#endif
diff --git a/nuttx/drivers/usbdev/msc_descriptors.c b/nuttx/drivers/usbdev/msc_descriptors.c
index 467eaced8c..0c86eaba9e 100644
--- a/nuttx/drivers/usbdev/msc_descriptors.c
+++ b/nuttx/drivers/usbdev/msc_descriptors.c
@@ -213,7 +213,7 @@ static const struct usb_epdesc_s g_hsepbulkindesc =
 /* Strings ******************************************************************/
 
 #ifndef CONFIG_USBMSC_COMPOSITE
-const char g_msccendorstr[]  = CONFIG_USBMSC_VENDORSTR;
+const char g_mscvendorstr[]  = CONFIG_USBMSC_VENDORSTR;
 const char g_mscproductstr[] = CONFIG_USBMSC_PRODUCTSTR;
 const char g_mscserialstr[]  = CONFIG_USBMSC_SERIALSTR;
 #endif
@@ -256,15 +256,15 @@ int usbmsc_mkstrdesc(uint8_t id, struct usb_strdesc_s *strdesc)
       }
 
       case USBMSC_MANUFACTURERSTRID:
-      str = g_vendorstr;
+      str = g_mscvendorstr;
       break;
 
     case USBMSC_PRODUCTSTRID:
-      str = g_productstr;
+      str = g_mscproductstr;
       break;
 
     case USBMSC_SERIALSTRID:
-      str = g_serialstr;
+      str = g_mscserialstr;
       break;
 #endif
 
diff --git a/nuttx/include/nuttx/usb/cdc_serial.h b/nuttx/include/nuttx/usb/cdc_serial.h
index 33ad03bb73..ad2c0e64fb 100644
--- a/nuttx/include/nuttx/usb/cdc_serial.h
+++ b/nuttx/include/nuttx/usb/cdc_serial.h
@@ -1,7 +1,7 @@
 /****************************************************************************
  * include/nuttx/usb/cdc_serial.h
  *
- *   Copyright (C) 2011 Gregory Nutt. All rights reserved.
+ *   Copyright (C) 2011-2012 Gregory Nutt. All rights reserved.
  *   Author: Gregory Nutt <spudmonkey@racsa.co.cr>
  *
  * Redistribution and use in source and binary forms, with or without
@@ -351,6 +351,24 @@ int cdcser_classobject(int minor, FAR struct usbdevclass_driver_s **classdev);
 
 EXTERN int cdcser_initialize(int minor);
 
+/****************************************************************************
+ * Name: cdcser_uninitialize
+ *
+ * Description:
+ *   Un-initialize the USB storage class driver
+ *
+ * Input Parameters:
+ *   handle - The handle returned by a previous call to cdcser_configure().
+ *
+ * Returned Value:
+ *   None
+ *
+ ****************************************************************************/
+
+#ifndef CONFIG_CDCSER_COMPOSITE
+EXTERN void cdcser_uninitialize(FAR struct usbdevclass_driver_s *classdev);
+#endif
+
 #undef EXTERN
 #if defined(__cplusplus)
 }
diff --git a/nuttx/include/nuttx/usb/usbdev.h b/nuttx/include/nuttx/usb/usbdev.h
index 3f694a5511..00ded57708 100644
--- a/nuttx/include/nuttx/usb/usbdev.h
+++ b/nuttx/include/nuttx/usb/usbdev.h
@@ -282,7 +282,7 @@ struct usbdev_s
 {
   const struct usbdev_ops_s *ops; /* Access to hardware specific features */
   struct usbdev_ep_s *ep0;        /* Endpoint zero */
-  uint8_t  speed;                 /* Current speed of host connection */
+  uint8_t  speed;                 /* Current speed of the host connection */
   uint8_t  dualspeed:1;           /* 1:supports high and full speed operation */
 };