From dbe9b7ffb757d61d6c234c752f72c9a1e82eeebc Mon Sep 17 00:00:00 2001
From: Gregory Nutt <gnutt@nuttx.org>
Date: Wed, 22 Aug 2018 17:02:23 -0600
Subject: [PATCH] drivers/wireless/ieee80211/bcmf_bdc.c:  Trivial check for
 NULL pointer.

---
 drivers/wireless/ieee80211/bcmf_bdc.c | 7 +++++++
 1 file changed, 7 insertions(+)

diff --git a/drivers/wireless/ieee80211/bcmf_bdc.c b/drivers/wireless/ieee80211/bcmf_bdc.c
index 3ce6efeedb..5bb188dc3c 100644
--- a/drivers/wireless/ieee80211/bcmf_bdc.c
+++ b/drivers/wireless/ieee80211/bcmf_bdc.c
@@ -260,6 +260,13 @@ struct bcmf_frame_s *bcmf_bdc_rx_frame(FAR struct bcmf_dev_s *priv)
   struct bcmf_frame_s *frame = priv->bus->rxframe(priv);
   struct bcmf_bdc_header *header;
 
+  /* Very that there is an Rx frame */
+
+  if (frame == NULL)
+    {
+      return NULL;
+    }
+
   /* Process bdc header */
 
   frame_len = frame->len - (unsigned int)(frame->data - frame->base);