Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1754906Ab2JQGcP (ORCPT ); Wed, 17 Oct 2012 02:32:15 -0400 Received: from acsinet15.oracle.com ([141.146.126.227]:31351 "EHLO acsinet15.oracle.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1752438Ab2JQGcN (ORCPT ); Wed, 17 Oct 2012 02:32:13 -0400 Message-ID: <507E50E5.5040201@oracle.com> Date: Wed, 17 Oct 2012 14:32:05 +0800 From: Joe Jin User-Agent: Mozilla/5.0 (X11; Linux x86_64; rv:16.0) Gecko/20121009 Thunderbird/16.0 MIME-Version: 1.0 To: Ron Mercer , Jitendra Kalsaria , linux-driver@qlogic.com CC: "netdev@vger.kernel.org" , "linux-kernel@vger.kernel.org" , Greg Marsden Subject: [PATCH] qla3xxx: Ensure req_q_phy_addr writes to the register Content-Type: multipart/mixed; boundary="------------000705040308040202030600" X-Source-IP: acsinet21.oracle.com [141.146.126.237] Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 1539 Lines: 49 This is a multi-part message in MIME format. --------------000705040308040202030600 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 7bit Make sure req_q_phy_addr write to the register. Signed-off-by: Joe Jin Cc: Ron Mercer Cc: Jitendra Kalsaria --- drivers/net/ethernet/qlogic/qla3xxx.c | 6 ++++++ 1 file changed, 6 insertions(+) diff --git a/drivers/net/ethernet/qlogic/qla3xxx.c b/drivers/net/ethernet/qlogic/qla3xxx.c index df09b1c..78b4cba 100644 --- a/drivers/net/ethernet/qlogic/qla3xxx.c +++ b/drivers/net/ethernet/qlogic/qla3xxx.c @@ -2525,6 +2525,12 @@ static int ql_alloc_net_req_rsp_queues(struct ql3_adapter *qdev) qdev->req_q_size = (u32) (NUM_REQ_Q_ENTRIES * sizeof(struct ob_mac_iocb_req)); + /* + * The barrier is required to ensure that req_q_phy_addr writes to + * the memory. + */ + wmb(); + qdev->req_q_virt_addr = pci_alloc_consistent(qdev->pdev, (size_t) qdev->req_q_size, -- 1.7.11.7 --------------000705040308040202030600 Content-Type: text/plain; charset=us-ascii; name="Attached Message Part" Content-Transfer-Encoding: base64 Content-Disposition: attachment; filename="Attached Message Part" --------------000705040308040202030600-- -- 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/