From mboxrd@z Thu Jan 1 00:00:00 1970 From: David Miller Subject: Re: [net-2.6 PATCH] e1000e: 82577/82578 PHY register access issues Date: Tue, 27 Jul 2010 21:06:42 -0700 (PDT) Message-ID: <20100727.210642.137855605.davem@davemloft.net> References: <20100727222808.25500.11033.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, stable@kernel.org, bruce.w.allan@intel.com To: jeffrey.t.kirsher@intel.com Return-path: Received: from 74-93-104-97-Washington.hfc.comcastbusiness.net ([74.93.104.97]:42976 "EHLO sunset.davemloft.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1750806Ab0G1EGZ (ORCPT ); Wed, 28 Jul 2010 00:06:25 -0400 In-Reply-To: <20100727222808.25500.11033.stgit@localhost.localdomain> Sender: netdev-owner@vger.kernel.org List-ID: From: Jeff Kirsher Date: Tue, 27 Jul 2010 15:28:46 -0700 > From: Bruce Allan > > The MAC-PHY interconnect on 82577/82578 uses a power management feature > (called K1) which must be disabled when in 1Gbps due to a hardware issue on > these parts. The #define bit setting used to enable/disable K1 is > incorrect and can cause PHY register accesses to stop working altogether > until the next device reset. This patch sets the register correctly. > > This issue is present in kernels since 2.6.32. > > CC: stable@kernel.org > Signed-off-by: Bruce Allan > Tested-by: Jeff Pieper > Signed-off-by: Jeff Kirsher Applied, thanks.