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=-12.7 required=3.0 tests=BAYES_00, HEADER_FROM_DIFFERENT_DOMAINS,INCLUDES_PATCH,MAILING_LIST_MULTI,SIGNED_OFF_BY, SPF_HELO_NONE,SPF_PASS,URIBL_BLOCKED,USER_AGENT_GIT autolearn=unavailable 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 7802FC4742C for ; Mon, 16 Nov 2020 08:55:02 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id 2044D216C4 for ; Mon, 16 Nov 2020 08:55:02 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1727495AbgKPIeY (ORCPT ); Mon, 16 Nov 2020 03:34:24 -0500 Received: from szxga04-in.huawei.com ([45.249.212.190]:7246 "EHLO szxga04-in.huawei.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1727384AbgKPIeY (ORCPT ); Mon, 16 Nov 2020 03:34:24 -0500 Received: from DGGEMS406-HUB.china.huawei.com (unknown [172.30.72.60]) by szxga04-in.huawei.com (SkyGuard) with ESMTP id 4CZMmq2rB3zkY8s; Mon, 16 Nov 2020 16:34:03 +0800 (CST) Received: from localhost.localdomain (10.69.192.56) by DGGEMS406-HUB.china.huawei.com (10.3.19.206) with Microsoft SMTP Server id 14.3.487.0; Mon, 16 Nov 2020 16:34:15 +0800 From: Tian Tao To: , , CC: , , , Subject: [PATCH] usb: mtu3: replace spin_lock_irqsave by spin_lock in hard IRQ Date: Mon, 16 Nov 2020 16:34:42 +0800 Message-ID: <1605515682-23771-1-git-send-email-tiantao6@hisilicon.com> X-Mailer: git-send-email 2.7.4 MIME-Version: 1.0 Content-Type: text/plain X-Originating-IP: [10.69.192.56] X-CFilter-Loop: Reflected Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org The code has been in a irq-disabled context since it is hard IRQ. There is no necessity to do it again. Signed-off-by: Tian Tao --- drivers/usb/mtu3/mtu3_core.c | 5 ++--- 1 file changed, 2 insertions(+), 3 deletions(-) diff --git a/drivers/usb/mtu3/mtu3_core.c b/drivers/usb/mtu3/mtu3_core.c index b3b4599..a6d7684 100644 --- a/drivers/usb/mtu3/mtu3_core.c +++ b/drivers/usb/mtu3/mtu3_core.c @@ -745,10 +745,9 @@ static irqreturn_t mtu3_u2_common_isr(struct mtu3 *mtu) static irqreturn_t mtu3_irq(int irq, void *data) { struct mtu3 *mtu = (struct mtu3 *)data; - unsigned long flags; u32 level1; - spin_lock_irqsave(&mtu->lock, flags); + spin_lock(&mtu->lock); /* U3D_LV1ISR is RU */ level1 = mtu3_readl(mtu->mac_base, U3D_LV1ISR); @@ -769,7 +768,7 @@ static irqreturn_t mtu3_irq(int irq, void *data) if (level1 & QMU_INTR) mtu3_qmu_isr(mtu); - spin_unlock_irqrestore(&mtu->lock, flags); + spin_unlock(&mtu->lock); return IRQ_HANDLED; } -- 2.7.4