Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1752150AbdHGVPi (ORCPT ); Mon, 7 Aug 2017 17:15:38 -0400 Received: from mail-qt0-f181.google.com ([209.85.216.181]:34008 "EHLO mail-qt0-f181.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1752107AbdHGVPe (ORCPT ); Mon, 7 Aug 2017 17:15:34 -0400 MIME-Version: 1.0 In-Reply-To: References: From: John Stultz Date: Mon, 7 Aug 2017 14:15:32 -0700 Message-ID: Subject: Re: unregister_netdevice: waiting for eth0 to become free. Usage count = 1 To: lkml , Network Development , Linux USB List , "David S. Miller" , Felipe Balbi Content-Type: text/plain; charset="UTF-8" Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 668 Lines: 15 On Mon, Aug 7, 2017 at 2:05 PM, John Stultz wrote: > So, with recent testing with my HiKey board, I've been noticing some > quirky behavior with my USB eth adapter. > > Basically, pluging the usb eth adapter in and then removing it, when > plugging it back in I often find that its not detected, and the system > slowly spits out the following message over and over: > unregister_netdevice: waiting for eth0 to become free. Usage count = 1 The other bit is that after this starts printing, the board will no longer reboot (it hangs continuing to occasionally print the above message), and I have to manually reset the device. thanks -john