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=-12.8 required=3.0 tests=BAYES_00,DKIMWL_WL_HIGH, DKIM_SIGNED,DKIM_VALID,HEADER_FROM_DIFFERENT_DOMAINS,INCLUDES_PATCH, MAILING_LIST_MULTI,SIGNED_OFF_BY,SPF_HELO_NONE,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 19FFFC4742C for ; Mon, 16 Nov 2020 08:35:07 +0000 (UTC) Received: from merlin.infradead.org (merlin.infradead.org [205.233.59.134]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by mail.kernel.org (Postfix) with ESMTPS id 8D911207BC for ; Mon, 16 Nov 2020 08:35:06 +0000 (UTC) Authentication-Results: mail.kernel.org; dkim=pass (2048-bit key) header.d=lists.infradead.org header.i=@lists.infradead.org header.b="P9JtrTho" DMARC-Filter: OpenDMARC Filter v1.3.2 mail.kernel.org 8D911207BC Authentication-Results: mail.kernel.org; dmarc=none (p=none dis=none) header.from=hisilicon.com Authentication-Results: mail.kernel.org; spf=none smtp.mailfrom=linux-arm-kernel-bounces+linux-arm-kernel=archiver.kernel.org@lists.infradead.org DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=lists.infradead.org; s=merlin.20170209; h=Sender:Content-Transfer-Encoding: Content-Type:Cc:List-Subscribe:List-Help:List-Post:List-Archive: List-Unsubscribe:List-Id:MIME-Version:Message-ID:Date:Subject:To:From: Reply-To:Content-ID:Content-Description:Resent-Date:Resent-From:Resent-Sender :Resent-To:Resent-Cc:Resent-Message-ID:In-Reply-To:References:List-Owner; bh=lUC6UaxiymM8v53Rh7F2Rb3siOBRdrP42K9zORMGigE=; b=P9JtrThomXyoZoPCkXD1Nc3wfx EmfYCG+9kRqBhOsqyRGk2JZL/qyIKBLWLbzmpl8NWNrBviM/Pz1dLHvqK1vzAU+TrJMUwE+D4Utzu 3IEZscUGDbXiD8XXi/j9sWaAk6SE0/PK1LgTIrNfkxz6sCyAk5dsblZ5iPlM+q96Yefjli21y5pVg G8Swyb1v6DNLSUrjkjTERmajZrX2PWiB5pwVTIX6YYEQcTkralSy+ahjIpMpDiGVOgEMvwhc+kBLz tjH1GlzumTT32m5+YZRrLQFOeXnSERp4LuUnJA9hH6eROQUR/7nZBUfBuT568w2G7w8Cm3ZG1ndaU Y9hfnGgA==; Received: from localhost ([::1] helo=merlin.infradead.org) by merlin.infradead.org with esmtp (Exim 4.92.3 #3 (Red Hat Linux)) id 1keZyD-0000lU-FG; Mon, 16 Nov 2020 08:34:41 +0000 Received: from szxga04-in.huawei.com ([45.249.212.190]) by merlin.infradead.org with esmtps (Exim 4.92.3 #3 (Red Hat Linux)) id 1keZy3-0000fL-Vx; Mon, 16 Nov 2020 08:34:33 +0000 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: , , 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 X-Originating-IP: [10.69.192.56] X-CFilter-Loop: Reflected X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20201116_033432_900359_F92E4DDF X-CRM114-Status: UNSURE ( 8.84 ) X-CRM114-Notice: Please train this message. X-BeenThere: linux-arm-kernel@lists.infradead.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Cc: linux-usb@vger.kernel.org, linux-mediatek@lists.infradead.org, linux-kernel@vger.kernel.org, linux-arm-kernel@lists.infradead.org Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit Sender: "linux-arm-kernel" Errors-To: linux-arm-kernel-bounces+linux-arm-kernel=archiver.kernel.org@lists.infradead.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 _______________________________________________ linux-arm-kernel mailing list linux-arm-kernel@lists.infradead.org http://lists.infradead.org/mailman/listinfo/linux-arm-kernel