From 76ff0fce861f074acf2d49e23a7ff3e846c5d692 Mon Sep 17 00:00:00 2001
From: Gregory Nutt <gnutt@nuttx.org>
Date: Sat, 25 Apr 2015 11:17:37 -0600
Subject: [PATCH] Add missing logic to destroy a class when the device is no
 longer connected to the hub port

---
 arch/arm/src/lpc17xx/lpc17_usbhost.c | 6 ++++++
 1 file changed, 6 insertions(+)

diff --git a/arch/arm/src/lpc17xx/lpc17_usbhost.c b/arch/arm/src/lpc17xx/lpc17_usbhost.c
index 4f082f313ad..11543bb92e6 100644
--- a/arch/arm/src/lpc17xx/lpc17_usbhost.c
+++ b/arch/arm/src/lpc17xx/lpc17_usbhost.c
@@ -931,6 +931,12 @@ static inline int lpc17_remctrled(struct lpc17_usbhost_s *priv,
 
           prev->hw.nexted = ed->hw.nexted;
         }
+
+      /* Just in case the hardware happens to be processing this ed now...
+       * it should go back to the control list head.
+       */
+
+      ed->hw.nexted = 0;
     }
 
   return OK;