Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S932131AbaBEUGP (ORCPT ); Wed, 5 Feb 2014 15:06:15 -0500 Received: from mail.windriver.com ([147.11.1.11]:54909 "EHLO mail.windriver.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1754696AbaBEUFx (ORCPT ); Wed, 5 Feb 2014 15:05:53 -0500 From: Paul Gortmaker To: , CC: Daniel J Blueman , Jeff Garzik , Paul Gortmaker Subject: [v2.6.34-stable 096/213] Prevent interface errors with Seagate FreeAgent GoFlex Date: Wed, 5 Feb 2014 15:00:51 -0500 Message-ID: <1391630568-49251-97-git-send-email-paul.gortmaker@windriver.com> X-Mailer: git-send-email 1.8.5.2 In-Reply-To: <1391630568-49251-1-git-send-email-paul.gortmaker@windriver.com> References: <1391630568-49251-1-git-send-email-paul.gortmaker@windriver.com> MIME-Version: 1.0 Content-Type: text/plain Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org From: Daniel J Blueman ------------------- This is a commit scheduled for the next v2.6.34 longterm release. http://git.kernel.org/?p=linux/kernel/git/paulg/longterm-queue-2.6.34.git If you see a problem with using this for longterm, please comment. ------------------- 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: Paul Gortmaker --- drivers/ata/libata-core.c | 1 + 1 file changed, 1 insertion(+) diff --git a/drivers/ata/libata-core.c b/drivers/ata/libata-core.c index 6e4b795d79e0..ce0ba625bd62 100644 --- a/drivers/ata/libata-core.c +++ b/drivers/ata/libata-core.c @@ -4407,6 +4407,7 @@ static const struct ata_blacklist_entry ata_device_blacklist [] = { /* 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 -- 1.8.5.2 -- 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/