From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1753004AbaDWLhN (ORCPT ); Wed, 23 Apr 2014 07:37:13 -0400 Received: from mail-pd0-f172.google.com ([209.85.192.172]:39002 "EHLO mail-pd0-f172.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1752103AbaDWLhF (ORCPT ); Wed, 23 Apr 2014 07:37:05 -0400 From: Kefeng Wang To: Tejun Heo , Hans de Goede , Maxime Ripard , linux-ide@vger.kernel.org, linux-kernel@vger.kernel.org Cc: wangkefeng.wang@huawei.com, kefeng.wang@linaro.org, Haojian Zhuang Subject: [PATCH v4 1/3] ata: ahci: append new hflag AHCI_HFLAG_NO_FBS Date: Wed, 23 Apr 2014 19:36:45 +0800 Message-Id: <1398253008-17059-2-git-send-email-kefeng.wang@linaro.org> X-Mailer: git-send-email 1.7.9.5 In-Reply-To: <1398253008-17059-1-git-send-email-kefeng.wang@linaro.org> References: <1398253008-17059-1-git-send-email-kefeng.wang@linaro.org> Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Append AHCI_HFLAG_NO_FBS to force turning off FBS flag. Signed-off-by: Haojian Zhuang Signed-off-by: Kefeng Wang --- drivers/ata/ahci.h | 1 + drivers/ata/libahci.c | 5 +++++ 2 files changed, 6 insertions(+) diff --git a/drivers/ata/ahci.h b/drivers/ata/ahci.h index 51af275..60db49b 100644 --- a/drivers/ata/ahci.h +++ b/drivers/ata/ahci.h @@ -235,6 +235,7 @@ enum { port start (wait until error-handling stage) */ AHCI_HFLAG_MULTI_MSI = (1 << 16), /* multiple PCI MSIs */ + AHCI_HFLAG_NO_FBS = (1 << 17), /* no FBS */ /* ap->flags bits */ diff --git a/drivers/ata/libahci.c b/drivers/ata/libahci.c index 6bd4f66..e1cf859 100644 --- a/drivers/ata/libahci.c +++ b/drivers/ata/libahci.c @@ -457,6 +457,11 @@ void ahci_save_initial_config(struct device *dev, cap |= HOST_CAP_FBS; } + if ((cap & HOST_CAP_FBS) && (hpriv->flags & AHCI_HFLAG_NO_FBS)) { + dev_info(dev, "controller can't do FBS, turning off CAP_FBS\n"); + cap &= ~HOST_CAP_FBS; + } + if (force_port_map && port_map != force_port_map) { dev_info(dev, "forcing port_map 0x%x -> 0x%x\n", port_map, force_port_map); -- 1.7.9.5