From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-8.8 required=3.0 tests=HEADER_FROM_DIFFERENT_DOMAINS, INCLUDES_PATCH,MAILING_LIST_MULTI,SIGNED_OFF_BY,SPF_PASS,URIBL_BLOCKED, USER_AGENT_GIT autolearn=ham autolearn_force=no version=3.4.0 Received: from mail.kernel.org (mail.kernel.org [198.145.29.99]) by smtp.lore.kernel.org (Postfix) with ESMTP id 7EE02C43382 for ; Tue, 25 Sep 2018 02:43:41 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id 3CFF221480 for ; Tue, 25 Sep 2018 02:43:41 +0000 (UTC) DMARC-Filter: OpenDMARC Filter v1.3.2 mail.kernel.org 3CFF221480 Authentication-Results: mail.kernel.org; dmarc=none (p=none dis=none) header.from=huawei.com Authentication-Results: mail.kernel.org; spf=none smtp.mailfrom=linux-kernel-owner@vger.kernel.org Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1728441AbeIYIs4 (ORCPT ); Tue, 25 Sep 2018 04:48:56 -0400 Received: from szxga05-in.huawei.com ([45.249.212.191]:12690 "EHLO huawei.com" rhost-flags-OK-OK-OK-FAIL) by vger.kernel.org with ESMTP id S1728137AbeIYIsr (ORCPT ); Tue, 25 Sep 2018 04:48:47 -0400 Received: from DGGEMS402-HUB.china.huawei.com (unknown [172.30.72.60]) by Forcepoint Email with ESMTP id 7B2B8F291BD4D; Tue, 25 Sep 2018 10:43:27 +0800 (CST) Received: from huawei.com (10.175.124.28) by DGGEMS402-HUB.china.huawei.com (10.3.19.202) with Microsoft SMTP Server id 14.3.399.0; Tue, 25 Sep 2018 10:43:18 +0800 From: Jason Yan To: , CC: , , , , , , , , , , , Jason Yan , Ewan Milne , Tomas Henzl Subject: [PATCH v3 2/5] scsi: libsas: make the lldd_port_deformed method optional Date: Tue, 25 Sep 2018 10:56:51 +0800 Message-ID: <20180925025654.44053-3-yanaijie@huawei.com> X-Mailer: git-send-email 2.14.4 In-Reply-To: <20180925025654.44053-1-yanaijie@huawei.com> References: <20180925025654.44053-1-yanaijie@huawei.com> MIME-Version: 1.0 Content-Type: text/plain X-Originating-IP: [10.175.124.28] X-CFilter-Loop: Reflected Sender: linux-kernel-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Now LLDDs have to implement lldd_port_deformed method otherwise NULL dereference will happen. Make it optional and remove the dummy implementation in hisi_sas. Signed-off-by: Jason Yan CC: John Garry CC: Johannes Thumshirn CC: Ewan Milne CC: Christoph Hellwig CC: Tomas Henzl CC: Dan Williams CC: Hannes Reinecke Acked-by: John Garry Reviewed-by: Hannes Reinecke Reviewed-by: Johannes Thumshirn Reviewed-by: Christoph Hellwig --- drivers/scsi/hisi_sas/hisi_sas_main.c | 9 ++------- drivers/scsi/libsas/sas_discover.c | 2 +- 2 files changed, 3 insertions(+), 8 deletions(-) diff --git a/drivers/scsi/hisi_sas/hisi_sas_main.c b/drivers/scsi/hisi_sas/hisi_sas_main.c index a4e2e6aa9a6b..1975c9266978 100644 --- a/drivers/scsi/hisi_sas/hisi_sas_main.c +++ b/drivers/scsi/hisi_sas/hisi_sas_main.c @@ -1861,10 +1861,6 @@ static void hisi_sas_port_formed(struct asd_sas_phy *sas_phy) hisi_sas_port_notify_formed(sas_phy); } -static void hisi_sas_port_deformed(struct asd_sas_phy *sas_phy) -{ -} - static int hisi_sas_write_gpio(struct sas_ha_struct *sha, u8 reg_type, u8 reg_index, u8 reg_count, u8 *write_data) { @@ -1954,10 +1950,9 @@ static struct sas_domain_function_template hisi_sas_transport_ops = { .lldd_I_T_nexus_reset = hisi_sas_I_T_nexus_reset, .lldd_lu_reset = hisi_sas_lu_reset, .lldd_query_task = hisi_sas_query_task, - .lldd_clear_nexus_ha = hisi_sas_clear_nexus_ha, + .lldd_clear_nexus_ha = hisi_sas_clear_nexus_ha, .lldd_port_formed = hisi_sas_port_formed, - .lldd_port_deformed = hisi_sas_port_deformed, - .lldd_write_gpio = hisi_sas_write_gpio, + .lldd_write_gpio = hisi_sas_write_gpio, }; void hisi_sas_init_mem(struct hisi_hba *hisi_hba) diff --git a/drivers/scsi/libsas/sas_discover.c b/drivers/scsi/libsas/sas_discover.c index 0148ae62a52a..dde433aa59c2 100644 --- a/drivers/scsi/libsas/sas_discover.c +++ b/drivers/scsi/libsas/sas_discover.c @@ -260,7 +260,7 @@ static void sas_suspend_devices(struct work_struct *work) * phy_list is not being mutated */ list_for_each_entry(phy, &port->phy_list, port_phy_el) { - if (si->dft->lldd_port_formed) + if (si->dft->lldd_port_deformed) si->dft->lldd_port_deformed(phy); phy->suspended = 1; port->suspended = 1; -- 2.14.4