From b07124c623107da46b1125b28092828f487e8c45 Mon Sep 17 00:00:00 2001
From: hathach <thach@tinyusb.org>
Date: Mon, 13 Aug 2018 18:09:29 +0700
Subject: [PATCH] fix issue with cdc write failed sometimes

---
 src/portable/nordic/nrf5x/dcd_nrf5x.c | 5 +++--
 1 file changed, 3 insertions(+), 2 deletions(-)

diff --git a/src/portable/nordic/nrf5x/dcd_nrf5x.c b/src/portable/nordic/nrf5x/dcd_nrf5x.c
index b9bd6ef1a..72cd8d0b1 100644
--- a/src/portable/nordic/nrf5x/dcd_nrf5x.c
+++ b/src/portable/nordic/nrf5x/dcd_nrf5x.c
@@ -70,11 +70,12 @@ typedef struct
 {
   uint8_t* buffer;
   uint16_t total_len;
-  uint16_t actual_len;
+  volatile uint16_t actual_len;
   uint8_t  mps; // max packet size
 
   // nrf52840 will auto ACK OUT packet after DMA is done
-  volatile bool data_received; // indicate packet is already ACK
+  // indicate packet is already ACK
+  volatile bool data_received;
 
 } nom_xfer_t;