From patchwork Sun Feb 7 11:36:50 2021 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Xiaofei Tan X-Patchwork-Id: 378258 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=-16.8 required=3.0 tests=BAYES_00, HEADER_FROM_DIFFERENT_DOMAINS,INCLUDES_CR_TRAILER,INCLUDES_PATCH, MAILING_LIST_MULTI, SPF_HELO_NONE, SPF_PASS, 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 2B32FC433E6 for ; Sun, 7 Feb 2021 11:44:13 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id EBA4164E43 for ; Sun, 7 Feb 2021 11:44:12 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S229621AbhBGLoE (ORCPT ); Sun, 7 Feb 2021 06:44:04 -0500 Received: from szxga06-in.huawei.com ([45.249.212.32]:12455 "EHLO szxga06-in.huawei.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S229843AbhBGLlV (ORCPT ); Sun, 7 Feb 2021 06:41:21 -0500 Received: from DGGEMS408-HUB.china.huawei.com (unknown [172.30.72.58]) by szxga06-in.huawei.com (SkyGuard) with ESMTP id 4DYRxV2LNDzjJmN; Sun, 7 Feb 2021 19:38:38 +0800 (CST) Received: from localhost.localdomain (10.67.165.24) by DGGEMS408-HUB.china.huawei.com (10.3.19.208) with Microsoft SMTP Server id 14.3.498.0; Sun, 7 Feb 2021 19:39:33 +0800 From: Xiaofei Tan To: , CC: , , , Xiaofei Tan Subject: [PATCH for-next 19/32] scsi: mvumi: Replace spin_lock_irqsave with spin_lock in hard IRQ Date: Sun, 7 Feb 2021 19:36:50 +0800 Message-ID: <1612697823-8073-20-git-send-email-tanxiaofei@huawei.com> X-Mailer: git-send-email 2.8.1 In-Reply-To: <1612697823-8073-1-git-send-email-tanxiaofei@huawei.com> References: <1612697823-8073-1-git-send-email-tanxiaofei@huawei.com> MIME-Version: 1.0 X-Originating-IP: [10.67.165.24] X-CFilter-Loop: Reflected Precedence: bulk List-ID: X-Mailing-List: linux-scsi@vger.kernel.org It is redundant to do irqsave and irqrestore in hardIRQ context, where it has been in a irq-disabled context. Signed-off-by: Xiaofei Tan --- drivers/scsi/mvumi.c | 7 +++---- 1 file changed, 3 insertions(+), 4 deletions(-) diff --git a/drivers/scsi/mvumi.c b/drivers/scsi/mvumi.c index 71b6a1f..b36164c 100644 --- a/drivers/scsi/mvumi.c +++ b/drivers/scsi/mvumi.c @@ -1790,11 +1790,10 @@ static void mvumi_handle_clob(struct mvumi_hba *mhba) static irqreturn_t mvumi_isr_handler(int irq, void *devp) { struct mvumi_hba *mhba = (struct mvumi_hba *) devp; - unsigned long flags; - spin_lock_irqsave(mhba->shost->host_lock, flags); + spin_lock(mhba->shost->host_lock); if (unlikely(mhba->instancet->clear_intr(mhba) || !mhba->global_isr)) { - spin_unlock_irqrestore(mhba->shost->host_lock, flags); + spin_unlock(mhba->shost->host_lock); return IRQ_NONE; } @@ -1815,7 +1814,7 @@ static irqreturn_t mvumi_isr_handler(int irq, void *devp) mhba->isr_status = 0; if (mhba->fw_state == FW_STATE_STARTED) mvumi_handle_clob(mhba); - spin_unlock_irqrestore(mhba->shost->host_lock, flags); + spin_unlock(mhba->shost->host_lock); return IRQ_HANDLED; }