From 47ff8e55c55d84404222313ba857c96d5e069d5f Mon Sep 17 00:00:00 2001
From: Kristian Sloth Lauszus <lauszus@gmail.com>
Date: Mon, 7 Oct 2013 00:41:49 +0200
Subject: [PATCH] Retry if device returns hrJERR

---
 Usb.cpp | 7 ++++++-
 1 file changed, 6 insertions(+), 1 deletion(-)

diff --git a/Usb.cpp b/Usb.cpp
index 122420bc..d1a3592c 100644
--- a/Usb.cpp
+++ b/Usb.cpp
@@ -581,7 +581,12 @@ uint8_t USB::AttemptConfig(uint8_t driver, uint8_t parent, uint8_t port, bool lo
                 }
         }
         rcode = devConfig[driver]->Init(parent, port, lowspeed);
-        if(rcode) {
+        if (rcode == hrJERR) { // Some devices returns this when plugged in - trying to initialize the device again usually works
+                delay(100);
+                devConfig[driver]->ConfigureDevice(parent, port, lowspeed); // Just ignore the returned value
+                rcode = devConfig[driver]->Init(parent, port, lowspeed);
+        }
+        if (rcode) {
                 // Issue a bus reset, because the device may be in a limbo state
                 if (parent == 0) {
                         // Send a bus reset on the root interface.