From mboxrd@z Thu Jan  1 00:00:00 1970
From: Yan Seiner <yan@seiner.com>
Date: Thu, 19 Feb 2009 03:13:24 +0000
Subject: FAQ Somewhere?  USB error messges
Message-Id: <499CCE54.2020704@seiner.com>
List-Id: <linux-hotplug.vger.kernel.org>
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To: linux-hotplug@vger.kernel.org

I have a device that has fallen off my usb hub.  It now refuses to 
connect with:

Feb 18 18:57:21 selene kernel: [217569.165436] usb 2-4.4.4.4.4.3: new 
low speed USB device using ehci_hcd and address 55
Feb 18 18:57:22 selene kernel: [217569.572035] usb 2-4.4.4.4.4.3: device 
not accepting address 55, error -71
Feb 18 18:57:22 selene kernel: [217569.572366] hub 2-4.4.4.4.4:1.0: 
unable to enumerate USB device on port 3

I'm fairly sure it's not the device as I have two identical ones that 
work fine in other hubs.  I'm fairly sure it's not the hub as I have 
other devices that work fine on that hub.

So now I need to figure out what that error message means.  Where can I 
look up the error code?