Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1754178AbZKQPHR (ORCPT ); Tue, 17 Nov 2009 10:07:17 -0500 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S1754115AbZKQPHQ (ORCPT ); Tue, 17 Nov 2009 10:07:16 -0500 Received: from earthlight.etchedpixels.co.uk ([81.2.110.250]:40512 "EHLO bob.linux.org.uk" rhost-flags-OK-OK-OK-FAIL) by vger.kernel.org with ESMTP id S1753442AbZKQPHO (ORCPT ); Tue, 17 Nov 2009 10:07:14 -0500 From: Alan Cox Subject: [PATCH 1/5] pata_via: Blacklist some combinations of Transcend Flash and via To: linux-kernel@vger.kernel.org, linux-ide@vger.kernel.org Date: Tue, 17 Nov 2009 14:51:06 +0000 Message-ID: <20091117145054.15430.52425.stgit@localhost.localdomain> In-Reply-To: <20091117144450.15430.83450.stgit@localhost.localdomain> References: <20091117144450.15430.83450.stgit@localhost.localdomain> User-Agent: StGIT/0.14.3 MIME-Version: 1.0 Content-Type: text/plain; charset="utf-8" Content-Transfer-Encoding: 7bit Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 2017 Lines: 62 Reported by Mikulas Patocka. VIA VT82C586B + Transcend TS64GSSD25-M v0826 does not work in UDMA mode Signed-off-by: Alan Cox --- drivers/ata/pata_via.c | 27 +++++++++++++++++++++++++++ 1 files changed, 27 insertions(+), 0 deletions(-) diff --git a/drivers/ata/pata_via.c b/drivers/ata/pata_via.c index 88984b8..2fb8be2 100644 --- a/drivers/ata/pata_via.c +++ b/drivers/ata/pata_via.c @@ -337,6 +337,32 @@ static void via_set_dmamode(struct ata_port *ap, struct ata_device *adev) } /** + * via_mode_filter - filter buggy device/mode pairs + * @dev: ATA device + * @mask: Mode bitmask + * + * We need to apply some minimal filtering for old controllers and at least + * one breed of Transcend SSD. Return the updated mask. + */ + +static unsigned long via_mode_filter(struct ata_device *dev, unsigned long mask) +{ + struct ata_host *host = dev->link->ap->host; + const struct via_isa_bridge *config = host->private_data; + unsigned char model_num[ATA_ID_PROD_LEN + 1]; + + if (config->id == PCI_DEVICE_ID_VIA_82C586_0) { + ata_id_c_string(dev->id, model_num, ATA_ID_PROD, sizeof(model_num)); + if (strcmp(model_num, "TS64GSSD25-M") == 0) { + ata_dev_printk(dev, KERN_WARNING, + "disabling UDMA mode due to reported lockups with this device.\n"); + mask &= ~ ATA_MASK_UDMA; + } + } + return ata_bmdma_mode_filter(dev, mask); +} + +/** * via_tf_load - send taskfile registers to host controller * @ap: Port to which output is sent * @tf: ATA taskfile register set @@ -427,6 +453,7 @@ static struct ata_port_operations via_port_ops = { .prereset = via_pre_reset, .sff_tf_load = via_tf_load, .port_start = via_port_start, + .mode_filter = via_mode_filter, }; static struct ata_port_operations via_port_ops_noirq = { -- 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/