Path: csiph.com!news.mixmin.net!aioe.org!bofh.it!news.nic.it!robomod From: John Garry Newsgroups: linux.kernel Subject: [PATCH 06/15] hisi_sas: disable dlvry queues once at reset for v2 hw Date: Tue, 06 Sep 2016 17:30:01 +0200 Message-ID: References: X-Mailer: git-send-email 1.9.1 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: robomod@news.nic.it List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Approved: robomod@news.nic.it Lines: 25 Organization: linux.* mail to news gateway X-Original-Cc: , , , , , , John Garry X-Original-Date: Tue, 6 Sep 2016 23:36:16 +0800 X-Original-Message-ID: <1473176185-217808-7-git-send-email-john.garry@huawei.com> X-Original-References: <1473176185-217808-1-git-send-email-john.garry@huawei.com> X-Original-Sender: linux-kernel-owner@vger.kernel.org Xref: csiph.com linux.kernel:1477513 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