From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1759276AbXEXAR3 (ORCPT ); Wed, 23 May 2007 20:17:29 -0400 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S1756506AbXEXARV (ORCPT ); Wed, 23 May 2007 20:17:21 -0400 Received: from 74-93-104-97-Washington.hfc.comcastbusiness.net ([74.93.104.97]:42798 "EHLO sunset.davemloft.net" rhost-flags-OK-FAIL-OK-OK) by vger.kernel.org with ESMTP id S1756160AbXEXARV (ORCPT ); Wed, 23 May 2007 20:17:21 -0400 Date: Wed, 23 May 2007 17:17:23 -0700 (PDT) Message-Id: <20070523.171723.68041701.davem@davemloft.net> To: bcollins@ubuntu.com Cc: linux-kernel@vger.kernel.org Subject: Re: [PATCH 5/6] SUNHME: Workaround ancient hang on U1's From: David Miller In-Reply-To: <91fcd7d6a83321c37f6769164b1b41ce78a07bfa.1179964369.git.bcollins@ubuntu.com> References: <98cd38b5.git.bcollins@ubuntu.com> <91fcd7d6a83321c37f6769164b1b41ce78a07bfa.1179964369.git.bcollins@ubuntu.com> X-Mailer: Mew version 5.1.52 on Emacs 21.4 / Mule 5.0 (SAKAKI) Mime-Version: 1.0 Content-Type: Text/Plain; charset=us-ascii Content-Transfer-Encoding: 7bit Sender: linux-kernel-owner@vger.kernel.org X-Mailing-List: linux-kernel@vger.kernel.org From: Ben Collins Date: Wed, 23 May 2007 18:30:46 -0400 > This work around has been in use by almost any distribution trying to > support sparc64 since at least 2002. Without it, sunhme hangs fairly > quickly on UltraSPARC 1's. > > Dave, I know it's not in the kernel because it isn't a "fix", but given > that we haven't seen a fix in more than 5 years, can we get this out of my > tree please? :) It isn't needed any more, the hang no longer occurs. Nobody should be applying that patch, my guess is that it was a GCC bug that has been fixed over time that reordered the writes to RX/TX descriptors which hung the chip.