From 6511afa1c249f2fd5d1bb531209ec3e623838ee0 Mon Sep 17 00:00:00 2001
From: Gregory Nutt <gnutt@nuttx.org>
Date: Thu, 12 Mar 2015 07:53:41 -0600
Subject: [PATCH] stm32_i2c: Add missing NULL check.  From Juha Niskanen

---
 arch/arm/src/stm32/stm32_i2c.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/arch/arm/src/stm32/stm32_i2c.c b/arch/arm/src/stm32/stm32_i2c.c
index ce150fd3ae..06a0c75a5a 100644
--- a/arch/arm/src/stm32/stm32_i2c.c
+++ b/arch/arm/src/stm32/stm32_i2c.c
@@ -1399,7 +1399,7 @@ static int stm32_i2c_isr(struct stm32_i2c_priv_s *priv)
        *  - or we close down by sending the stop bit
        */
 
-      if (priv->msgc > 0)
+      if (priv->msgc > 0 && priv->msgv != NULL)
         {
           if (priv->msgv->flags & I2C_M_NORESTART)
             {