From patchwork Sun Feb 7 11:36:40 2021 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Xiaofei Tan X-Patchwork-Id: 378876 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 EC7E7C433DB for ; Sun, 7 Feb 2021 11:42:41 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id BD6AF64E44 for ; Sun, 7 Feb 2021 11:42:41 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S229870AbhBGLm2 (ORCPT ); Sun, 7 Feb 2021 06:42:28 -0500 Received: from szxga05-in.huawei.com ([45.249.212.191]:12088 "EHLO szxga05-in.huawei.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S229797AbhBGLlE (ORCPT ); Sun, 7 Feb 2021 06:41:04 -0500 Received: from DGGEMS408-HUB.china.huawei.com (unknown [172.30.72.60]) by szxga05-in.huawei.com (SkyGuard) with ESMTP id 4DYRwg4rpXzMWRG; Sun, 7 Feb 2021 19:37:55 +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 19:39:28 +0800 From: Xiaofei Tan To: , CC: , , , Xiaofei Tan Subject: [PATCH for-next 09/32] scsi: aha1740: Replace spin_lock_irqsave with spin_lock in hard IRQ Date: Sun, 7 Feb 2021 19:36:40 +0800 Message-ID: <1612697823-8073-10-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/aha1740.c | 5 ++--- 1 file changed, 2 insertions(+), 3 deletions(-) diff --git a/drivers/scsi/aha1740.c b/drivers/scsi/aha1740.c index 0dc8310..fd9787d 100644 --- a/drivers/scsi/aha1740.c +++ b/drivers/scsi/aha1740.c @@ -214,14 +214,13 @@ static irqreturn_t aha1740_intr_handle(int irq, void *dev_id) struct ecb *ecbptr; struct scsi_cmnd *SCtmp; unsigned int base; - unsigned long flags; int handled = 0; struct aha1740_sg *sgptr; struct eisa_device *edev; if (!host) panic("aha1740.c: Irq from unknown host!\n"); - spin_lock_irqsave(host->host_lock, flags); + spin_lock(host->host_lock); base = host->io_port; number_serviced = 0; edev = HOSTDATA(host)->edev; @@ -308,7 +307,7 @@ static irqreturn_t aha1740_intr_handle(int irq, void *dev_id) number_serviced++; } - spin_unlock_irqrestore(host->host_lock, flags); + spin_unlock(host->host_lock); return IRQ_RETVAL(handled); }