From mboxrd@z Thu Jan 1 00:00:00 1970 From: Panard Subject: ahci issue on MCP89 with Macbookpro7,1 Date: Mon, 31 May 2010 21:17:39 +0200 Message-ID: <201005312117.39590.panard@backzone.net> Mime-Version: 1.0 Content-Type: Text/Plain; charset="utf-8" Content-Transfer-Encoding: 7bit Return-path: Received: from smtp4-g21.free.fr ([212.27.42.4]:35007 "EHLO smtp4-g21.free.fr" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1753093Ab0EaTRz (ORCPT ); Mon, 31 May 2010 15:17:55 -0400 Received: from banquise.localnet (banquise.backzone.net [88.160.158.19]) by smtp4-g21.free.fr (Postfix) with ESMTP id 361CD4C8037 for ; Mon, 31 May 2010 21:17:46 +0200 (CEST) Sender: linux-ide-owner@vger.kernel.org List-Id: linux-ide@vger.kernel.org To: linux-ide@vger.kernel.org Dear all, it seems that the ahci drivers fails with the (apparently supported) MCP89 chipset on Macbookpro7,1 machines. Typical error messages are : [ 12.520091] ata2: COMRESET failed (errno=-16) [ 12.520102] ata1: COMRESET failed (errno=-16) [ 17.910090] ata2: link is slow to respond, please be patient (ready=0) [ 17.910095] ata1: link is slow to respond, please be patient (ready=0) [ 22.530090] ata2: COMRESET failed (errno=-16) [ 22.530097] ata1: COMRESET failed (errno=-16) [ 27.920090] ata1: link is slow to respond, please be patient (ready=0) [ 27.920094] ata2: link is slow to respond, please be patient (ready=0) [ 57.560090] ata1: COMRESET failed (errno=-16) [ 57.560095] ata1: limiting SATA link speed to 1.5 Gbps [ 57.560102] ata2: COMRESET failed (errno=-16) [ 57.560105] ata2: limiting SATA link speed to 1.5 Gbps [ 62.590090] ata1: COMRESET failed (errno=-16) [ 62.590094] ata1: reset failed, giving up [ 62.590105] ata2: COMRESET failed (errno=-16) [ 62.590108] ata2: reset failed, giving up Hence, no disk nor cdrom work on macbookpro7,1. Full dmesgs, etc. can be found at https://bugzilla.kernel.org/show_bug.cgi?id=15923 . I wonder if there may be any parameters to tune in kernel command line to overcome this issue? Or is this a strong issue with the current driver? I can provide supplementary debug messages if needed. Thanks, Panard