From patchwork Tue Nov 12 09:30:56 2019 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: John Garry X-Patchwork-Id: 11238959 Return-Path: Received: from mail.kernel.org (pdx-korg-mail-1.web.codeaurora.org [172.30.200.123]) by pdx-korg-patchwork-2.web.codeaurora.org (Postfix) with ESMTP id 5C1921747 for ; Tue, 12 Nov 2019 09:34:41 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id 467FC21E6F for ; Tue, 12 Nov 2019 09:34:41 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1727437AbfKLJea (ORCPT ); Tue, 12 Nov 2019 04:34:30 -0500 Received: from szxga05-in.huawei.com ([45.249.212.191]:6206 "EHLO huawei.com" rhost-flags-OK-OK-OK-FAIL) by vger.kernel.org with ESMTP id S1727302AbfKLJe3 (ORCPT ); Tue, 12 Nov 2019 04:34:29 -0500 Received: from DGGEMS401-HUB.china.huawei.com (unknown [172.30.72.58]) by Forcepoint Email with ESMTP id D3AB48A5A483CEA67AAB; Tue, 12 Nov 2019 17:34:24 +0800 (CST) Received: from localhost.localdomain (10.69.192.58) by DGGEMS401-HUB.china.huawei.com (10.3.19.201) with Microsoft SMTP Server id 14.3.439.0; Tue, 12 Nov 2019 17:34:18 +0800 From: John Garry To: , CC: , , , Xiang Chen , "John Garry" Subject: [PATCH 1/4] scsi: hisi_sas: Check sas_port before using it Date: Tue, 12 Nov 2019 17:30:56 +0800 Message-ID: <1573551059-107873-2-git-send-email-john.garry@huawei.com> X-Mailer: git-send-email 2.8.1 In-Reply-To: <1573551059-107873-1-git-send-email-john.garry@huawei.com> References: <1573551059-107873-1-git-send-email-john.garry@huawei.com> MIME-Version: 1.0 X-Originating-IP: [10.69.192.58] X-CFilter-Loop: Reflected Sender: linux-scsi-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-scsi@vger.kernel.org From: Xiang Chen Need to check the structure sas_port before using it. Signed-off-by: Xiang Chen Signed-off-by: John Garry --- drivers/scsi/hisi_sas/hisi_sas_main.c | 3 ++- 1 file changed, 2 insertions(+), 1 deletion(-) diff --git a/drivers/scsi/hisi_sas/hisi_sas_main.c b/drivers/scsi/hisi_sas/hisi_sas_main.c index 18c95b33592b..c72fc59353bd 100644 --- a/drivers/scsi/hisi_sas/hisi_sas_main.c +++ b/drivers/scsi/hisi_sas/hisi_sas_main.c @@ -974,12 +974,13 @@ static void hisi_sas_port_notify_formed(struct asd_sas_phy *sas_phy) struct hisi_hba *hisi_hba = sas_ha->lldd_ha; struct hisi_sas_phy *phy = sas_phy->lldd_phy; struct asd_sas_port *sas_port = sas_phy->port; - struct hisi_sas_port *port = to_hisi_sas_port(sas_port); + struct hisi_sas_port *port; unsigned long flags; if (!sas_port) return; + port = to_hisi_sas_port(sas_port); spin_lock_irqsave(&hisi_hba->lock, flags); port->port_attached = 1; port->id = phy->port_id;