Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1754620AbbGaUSS (ORCPT ); Fri, 31 Jul 2015 16:18:18 -0400 Received: from mail.linuxfoundation.org ([140.211.169.12]:47537 "EHLO mail.linuxfoundation.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1945902AbbGaUNO (ORCPT ); Fri, 31 Jul 2015 16:13:14 -0400 From: Greg Kroah-Hartman To: linux-kernel@vger.kernel.org Cc: Greg Kroah-Hartman , stable@vger.kernel.org, Arne Fitzenreiter , Tejun Heo Subject: [PATCH 3.14 085/125] libata: add ATA_HORKAGE_NOTRIM Date: Fri, 31 Jul 2015 12:41:25 -0700 Message-Id: <20150731194030.100377041@linuxfoundation.org> X-Mailer: git-send-email 2.5.0 In-Reply-To: <20150731194027.037807932@linuxfoundation.org> References: <20150731194027.037807932@linuxfoundation.org> User-Agent: quilt/0.64 MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 1696 Lines: 52 3.14-stable review patch. If anyone has any objections, please let me know. ------------------ From: Arne Fitzenreiter commit 71d126fd28de2d4d9b7b2088dbccd7ca62fad6e0 upstream. Some devices lose data on TRIM whether queued or not. This patch adds a horkage to disable TRIM. tj: Collapsed unnecessary if() nesting. Signed-off-by: Arne Fitzenreiter Signed-off-by: Tejun Heo Signed-off-by: Greg Kroah-Hartman --- drivers/ata/libata-scsi.c | 3 ++- include/linux/libata.h | 1 + 2 files changed, 3 insertions(+), 1 deletion(-) --- a/drivers/ata/libata-scsi.c +++ b/drivers/ata/libata-scsi.c @@ -2510,7 +2510,8 @@ static unsigned int ata_scsiop_read_cap( rbuf[14] = (lowest_aligned >> 8) & 0x3f; rbuf[15] = lowest_aligned; - if (ata_id_has_trim(args->id)) { + if (ata_id_has_trim(args->id) && + !(dev->horkage & ATA_HORKAGE_NOTRIM)) { rbuf[14] |= 0x80; /* TPE */ if (ata_id_has_zero_after_trim(args->id)) --- a/include/linux/libata.h +++ b/include/linux/libata.h @@ -428,6 +428,7 @@ enum { ATA_HORKAGE_NO_NCQ_TRIM = (1 << 19), /* don't use queued TRIM */ ATA_HORKAGE_NOLPM = (1 << 20), /* don't use LPM */ ATA_HORKAGE_WD_BROKEN_LPM = (1 << 21), /* some WDs have broken LPM */ + ATA_HORKAGE_NOTRIM = (1 << 24), /* don't use TRIM */ /* DMA mask for user DMA control: User visible values; DO NOT renumber */ -- 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/