Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1754275AbbK3PCG (ORCPT ); Mon, 30 Nov 2015 10:02:06 -0500 Received: from mail-yk0-f182.google.com ([209.85.160.182]:35839 "EHLO mail-yk0-f182.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1754071AbbK3PCE (ORCPT ); Mon, 30 Nov 2015 10:02:04 -0500 Date: Mon, 30 Nov 2015 10:01:59 -0500 From: Tejun Heo To: Xiangliang Yu Cc: linux-ide@vger.kernel.org, linux-kernel@vger.kernel.org, SPG_Linux_Kernel@amd.com Subject: Re: [PATCH 1/1] AHCI: Fix softreset failed issue of Port Multiplier Message-ID: <20151130150159.GD3535@mtj.duckdns.org> References: <1448540822-24175-1-git-send-email-Xiangliang.Yu@amd.com> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <1448540822-24175-1-git-send-email-Xiangliang.Yu@amd.com> User-Agent: Mutt/1.5.24 (2015-08-30) Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 905 Lines: 25 On Thu, Nov 26, 2015 at 08:27:02PM +0800, Xiangliang Yu wrote: > Current code doesn't update port value of Port Multiplier(PM) when > sending FIS of softreset to device, command will fail if FBS is > enabled. > > There are two ways to fix the issue: the first is to disable FBS > before sending softreset command to PM device and the second is > to update port value of PM when sending command. > > For the first way, i can't find any related rule in AHCI Spec. The > second way can avoid disabling FBS and has better performance. > > Signed-off-by: Xiangliang Yu Applied to libata/for-4.4-fixes w/ stable cc'd. Thanks. -- tejun -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/