From a649cbe12bca813f0993a0392c0755f2b1a9fd13 Mon Sep 17 00:00:00 2001
From: PaulStoffregen <paul@pjrc.com>
Date: Wed, 8 Feb 2017 06:46:42 -0800
Subject: [PATCH] Fix backward followup linking when creating a qTD group

---
 k66_usbhost.ino | 7 ++++---
 1 file changed, 4 insertions(+), 3 deletions(-)

diff --git a/k66_usbhost.ino b/k66_usbhost.ino
index 0ebfc9f..a3c299b 100644
--- a/k66_usbhost.ino
+++ b/k66_usbhost.ino
@@ -609,12 +609,13 @@ bool new_Transfer(Pipe_t *pipe, void *buffer, uint32_t len)
 	Transfer_t *prev = NULL;
 	Transfer_t *p = halt;
 	while (p->qtd.next != (uint32_t)transfer) {
-		Transfer_t *n = (Transfer_t *)p->qtd.next;
+		Transfer_t *next = (Transfer_t *)p->qtd.next;
 		p->prev_followup = prev;
-		p->next_followup = n;
+		p->next_followup = next;
 		prev = p;
-		p = n;
+		p = next;
 	}
+	p->prev_followup = prev;
 	p->next_followup = NULL;
 	print(halt, p);
 	// add them to a followup list