From mboxrd@z Thu Jan 1 00:00:00 1970 From: David Miller Subject: Re: [net-2.6 PATCH 2/3] ixgbe: disable tx engine before disabling tx laser Date: Tue, 29 Jun 2010 23:15:13 -0700 (PDT) Message-ID: <20100629.231513.176662990.davem@davemloft.net> References: <20100630042739.8925.24962.stgit@localhost.localdomain> <20100630042836.8925.82492.stgit@localhost.localdomain> Mime-Version: 1.0 Content-Type: Text/Plain; charset=us-ascii Content-Transfer-Encoding: 7bit Cc: netdev@vger.kernel.org, gospo@redhat.com, bphilips@novell.com, john.r.fastabend@intel.com, peter.p.waskiewicz.jr@intel.com To: jeffrey.t.kirsher@intel.com Return-path: Received: from 74-93-104-97-Washington.hfc.comcastbusiness.net ([74.93.104.97]:59133 "EHLO sunset.davemloft.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1752339Ab0F3GPA (ORCPT ); Wed, 30 Jun 2010 02:15:00 -0400 In-Reply-To: <20100630042836.8925.82492.stgit@localhost.localdomain> Sender: netdev-owner@vger.kernel.org List-ID: From: Jeff Kirsher Date: Tue, 29 Jun 2010 21:28:36 -0700 > From: John Fastabend > > Disabling the tx laser while receiving DMA requests > can hang the device. After this occurs the device > is in a bad state. The GPIO bit never clears when > PCI master access is disabled and a reboot is required > to get the device in a good state again. > > Signed-off-by: John Fastabend > Acked-by: Peter P Waskiewicz Jr > Signed-off-by: Jeff Kirsher Applied.