From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1161046Ab2I1Usw (ORCPT ); Fri, 28 Sep 2012 16:48:52 -0400 Received: from out1-smtp.messagingengine.com ([66.111.4.25]:37780 "EHLO out1-smtp.messagingengine.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1945944Ab2I1Usl (ORCPT ); Fri, 28 Sep 2012 16:48:41 -0400 X-Sasl-enc: Zl8aTBejT57LYPhp9q3BW+VC2vP+1ZRMiu+ikLMbLbNX 1348865320 From: Greg Kroah-Hartman To: linux-kernel@vger.kernel.org, stable@vger.kernel.org Cc: Greg Kroah-Hartman , alan@lxorguk.ukuu.org.uk, Daniel J Blueman , Jeff Garzik Subject: [ 103/127] libata: Prevent interface errors with Seagate FreeAgent GoFlex Date: Fri, 28 Sep 2012 13:34:36 -0700 Message-Id: <20120928203057.927584460@linuxfoundation.org> X-Mailer: git-send-email 1.7.12.1.428.g652398a In-Reply-To: <20120928203045.835238916@linuxfoundation.org> References: <20120928203045.835238916@linuxfoundation.org> User-Agent: quilt/0.60-2.1.2 Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org 3.0-stable review patch. If anyone has any objections, please let me know. ------------------ From: Daniel J Blueman commit c531077f40abc9f2129c4c83a30b3f8d6ce1c0e7 upstream. When using my Seagate FreeAgent GoFlex eSATAp external disk enclosure, interface errors are always seen until 1.5Gbps is negotiated [1]. This occurs using any disk in the enclosure, and when the disk is connected directly with a generic passive eSATAp cable, we see stable 3Gbps operation as expected. Blacklist 3Gbps mode to avoid dataloss and the ~30s delay bus reset and renegotiation incurs. Signed-off-by: Daniel J Blueman Signed-off-by: Jeff Garzik Signed-off-by: Greg Kroah-Hartman --- drivers/ata/libata-core.c | 1 + 1 file changed, 1 insertion(+) --- a/drivers/ata/libata-core.c +++ b/drivers/ata/libata-core.c @@ -4138,6 +4138,7 @@ static const struct ata_blacklist_entry /* Devices which aren't very happy with higher link speeds */ { "WD My Book", NULL, ATA_HORKAGE_1_5_GBPS, }, + { "Seagate FreeAgent GoFlex", NULL, ATA_HORKAGE_1_5_GBPS, }, /* * Devices which choke on SETXFER. Applies only if both the