From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1752312AbaDJFZz (ORCPT ); Thu, 10 Apr 2014 01:25:55 -0400 Received: from szxga03-in.huawei.com ([119.145.14.66]:46581 "EHLO szxga03-in.huawei.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1750920AbaDJFZu (ORCPT ); Thu, 10 Apr 2014 01:25:50 -0400 From: Kefeng Wang To: Tejun Heo CC: Hans de Goede , , , , Kefeng Wang , Haojian Zhuang Subject: [PATCH V2 1/2] ata: ahci: append new hflag AHCI_HFLAG_NO_FBS Date: Thu, 10 Apr 2014 13:24:27 +0800 Message-ID: <1397107468-640-2-git-send-email-wangkefeng.wang@huawei.com> X-Mailer: git-send-email 1.8.3.msysgit.0 In-Reply-To: <1397107468-640-1-git-send-email-wangkefeng.wang@huawei.com> References: <1397107468-640-1-git-send-email-wangkefeng.wang@huawei.com> MIME-Version: 1.0 Content-Type: text/plain X-Originating-IP: [10.177.21.224] X-CFilter-Loop: Reflected Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org From: Kefeng Wang 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(+), 0 deletions(-) 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..573edb3 100644 --- a/drivers/ata/libahci.c +++ b/drivers/ata/libahci.c @@ -452,6 +452,11 @@ void ahci_save_initial_config(struct device *dev, cap &= ~HOST_CAP_SNTF; } + 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 (!(cap & HOST_CAP_FBS) && (hpriv->flags & AHCI_HFLAG_YES_FBS)) { dev_info(dev, "controller can do FBS, turning on CAP_FBS\n"); cap |= HOST_CAP_FBS; -- 1.7.1