From 951b3b33398482945511548573fd732614db1ad6 Mon Sep 17 00:00:00 2001
From: Robert Fisk <robert_fisk@fastmail.fm>
Date: Tue, 1 Nov 2016 11:38:07 +1300
Subject: [PATCH] Flush HID endpoint on init.

Fixes delayed HID events after failed wakeup attempt.
---
 .../ST/STM32_USB_Device_Library/Class/HID/Src/usbd_hid.c         | 1 +
 1 file changed, 1 insertion(+)

diff --git a/Upstream/Middlewares/ST/STM32_USB_Device_Library/Class/HID/Src/usbd_hid.c b/Upstream/Middlewares/ST/STM32_USB_Device_Library/Class/HID/Src/usbd_hid.c
index f2f0219..9f49a6c 100644
--- a/Upstream/Middlewares/ST/STM32_USB_Device_Library/Class/HID/Src/usbd_hid.c
+++ b/Upstream/Middlewares/ST/STM32_USB_Device_Library/Class/HID/Src/usbd_hid.c
@@ -334,6 +334,7 @@ static uint8_t  USBD_HID_Init (USBD_HandleTypeDef *pdev,
                  HID_EPIN_ADDR,
                  USBD_EP_TYPE_INTR,
                  InReportSize);
+  USBD_LL_FlushEP(pdev, HID_EPIN_ADDR);
   
   pdev->pClassData = USBD_malloc(sizeof (USBD_HID_HandleTypeDef));