From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S935973AbcIFPYA (ORCPT ); Tue, 6 Sep 2016 11:24:00 -0400 Received: from szxga03-in.huawei.com ([119.145.14.66]:47422 "EHLO szxga03-in.huawei.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S934818AbcIFPXv (ORCPT ); Tue, 6 Sep 2016 11:23:51 -0400 From: John Garry To: , CC: , , , , , , John Garry Subject: [PATCH 06/15] hisi_sas: disable dlvry queues once at reset for v2 hw Date: Tue, 6 Sep 2016 23:36:16 +0800 Message-ID: <1473176185-217808-7-git-send-email-john.garry@huawei.com> X-Mailer: git-send-email 1.9.1 In-Reply-To: <1473176185-217808-1-git-send-email-john.garry@huawei.com> References: <1473176185-217808-1-git-send-email-john.garry@huawei.com> MIME-Version: 1.0 Content-Type: text/plain X-Originating-IP: [10.67.212.75] X-CFilter-Loop: Reflected X-Mirapoint-Virus-RAPID-Raw: score=unknown(0), refid=str=0001.0A020203.57CEDF84.01B3,ss=1,re=0.000,recu=0.000,reip=0.000,cl=1,cld=1,fgs=0, ip=0.0.0.0, so=2013-05-26 15:14:31, dmn=2013-03-21 17:37:32 X-Mirapoint-Loop-Id: 850a990bb205ccee7c8c844d9ff95398 Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org The Delivery queue enable register should only be written to once at reset for v2 hw. Signed-off-by: John Garry --- drivers/scsi/hisi_sas/hisi_sas_v2_hw.c | 4 +--- 1 file changed, 1 insertion(+), 3 deletions(-) diff --git a/drivers/scsi/hisi_sas/hisi_sas_v2_hw.c b/drivers/scsi/hisi_sas/hisi_sas_v2_hw.c index 25e7c58..aca2b80 100644 --- a/drivers/scsi/hisi_sas/hisi_sas_v2_hw.c +++ b/drivers/scsi/hisi_sas/hisi_sas_v2_hw.c @@ -685,9 +685,7 @@ static int reset_hw_v2_hw(struct hisi_hba *hisi_hba) else reset_val = 0x7ffff; - /* Disable all of the DQ */ - for (i = 0; i < HISI_SAS_MAX_QUEUES; i++) - hisi_sas_write32(hisi_hba, DLVRY_QUEUE_ENABLE, 0); + hisi_sas_write32(hisi_hba, DLVRY_QUEUE_ENABLE, 0); /* Disable all of the PHYs */ for (i = 0; i < hisi_hba->n_phy; i++) { -- 1.9.1