From d29cb09da37b76a04095103ddfe59219c8e5c6b3 Mon Sep 17 00:00:00 2001
From: Gregory Nutt <gnutt@nuttx.org>
Date: Wed, 18 Oct 2017 11:06:14 -0600
Subject: [PATCH] drivers/usbdev:  Move test for NULL pointer before the
 pointer is deferences.  Noted by Juha Niskanen.

---
 drivers/usbdev/cdcacm.c | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/drivers/usbdev/cdcacm.c b/drivers/usbdev/cdcacm.c
index 146c3c17ce5..7593156a916 100644
--- a/drivers/usbdev/cdcacm.c
+++ b/drivers/usbdev/cdcacm.c
@@ -480,10 +480,11 @@ static int cdcacm_recvpacket(FAR struct cdcacm_dev_s *priv,
   uint16_t nexthead;
   uint16_t nbytes = 0;
 
+  DEBUGASSERT(priv != NULL && rdcontainer != NULL);
+
   uinfo("head=%d tail=%d nrdq=%d reqlen=%d\n",
         priv->serdev.recv.head, priv->serdev.recv.tail, priv->nrdq, reqlen);
 
-  DEBUGASSERT(priv != NULL && rdcontainer != NULL);
 #ifdef CONFIG_CDCACM_IFLOWCONTROL
   DEBUGASSERT(priv->rxenabled && !priv->iactive);
 #else