From nobody Sat Nov 30 16:47:48 2024 Received: from szxga05-in.huawei.com (szxga05-in.huawei.com [45.249.212.191]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id 13A3D1B9859; Mon, 9 Sep 2024 13:21:42 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=45.249.212.191 ARC-Seal: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1725888104; cv=none; b=FSY98avxKyrI8A7QhljQIGmn0iX5185TNkf5YyiS8n6UnlXx3wP+qD4eetaYhR/OwOc2f26MOGiU1WNxkBJb87sC2nx69brURh56YmGy+2/FZUQ3WKQ1hb2ueogbwfmQeQ9HhYKUNkpzT202clP0zR2hDCE4HJWodUVCCSJ1FP4= ARC-Message-Signature: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1725888104; c=relaxed/simple; bh=0b4C/Vuwv4I8ylfIxQnqvclm7T7YhfibBjMkZOyYo4k=; h=From:To:Subject:Date:Message-ID:In-Reply-To:References: MIME-Version:Content-Type; b=lR5RwsvJN73I7f+bFO54zbXrnCBtV1qfJQL9by0kSOtfKY3JLmjbeTxzcfZqhbuEMffLe0u7rsHJyclCbr+351jtXM6uNPcVQrpjyFbn1wHqTVz80Y6ike3gk0kO9rgGpxabNp3f1HU9aNaMROZx2Klh7iJzeNFTP51W3lOO8hE= ARC-Authentication-Results: i=1; smtp.subspace.kernel.org; dmarc=pass (p=quarantine dis=none) header.from=huawei.com; spf=pass smtp.mailfrom=huawei.com; arc=none smtp.client-ip=45.249.212.191 Authentication-Results: smtp.subspace.kernel.org; dmarc=pass (p=quarantine dis=none) header.from=huawei.com Authentication-Results: smtp.subspace.kernel.org; spf=pass smtp.mailfrom=huawei.com Received: from mail.maildlp.com (unknown [172.19.163.44]) by szxga05-in.huawei.com (SkyGuard) with ESMTP id 4X2SCD4Gpzz1j8Mb; Mon, 9 Sep 2024 21:21:12 +0800 (CST) Received: from kwepemh500013.china.huawei.com (unknown [7.202.181.146]) by mail.maildlp.com (Postfix) with ESMTPS id 4C19A140361; Mon, 9 Sep 2024 21:21:39 +0800 (CST) Received: from huawei.com (10.90.53.73) by kwepemh500013.china.huawei.com (7.202.181.146) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384) id 15.2.1544.11; Mon, 9 Sep 2024 21:21:38 +0800 From: Jinjie Ruan To: , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , Subject: [PATCH 1/7] net: apple: bmac: Use IRQF_NO_AUTOEN flag in request_irq() Date: Mon, 9 Sep 2024 21:30:28 +0800 Message-ID: <20240909133034.1296930-2-ruanjinjie@huawei.com> X-Mailer: git-send-email 2.34.1 In-Reply-To: <20240909133034.1296930-1-ruanjinjie@huawei.com> References: <20240909133034.1296930-1-ruanjinjie@huawei.com> Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Transfer-Encoding: quoted-printable X-ClientProxiedBy: dggems701-chm.china.huawei.com (10.3.19.178) To kwepemh500013.china.huawei.com (7.202.181.146) Content-Type: text/plain; charset="utf-8" disable_irq() after request_irq() still has a time gap in which interrupts can come. request_irq() with IRQF_NO_AUTOEN flag will disable IRQ auto-enable when request IRQ. Signed-off-by: Jinjie Ruan --- drivers/net/ethernet/apple/bmac.c | 3 +-- 1 file changed, 1 insertion(+), 2 deletions(-) diff --git a/drivers/net/ethernet/apple/bmac.c b/drivers/net/ethernet/apple= /bmac.c index 292b1f9cd9e7..785f4b4ff758 100644 --- a/drivers/net/ethernet/apple/bmac.c +++ b/drivers/net/ethernet/apple/bmac.c @@ -1317,7 +1317,7 @@ static int bmac_probe(struct macio_dev *mdev, const s= truct of_device_id *match) =20 timer_setup(&bp->tx_timeout, bmac_tx_timeout, 0); =20 - ret =3D request_irq(dev->irq, bmac_misc_intr, 0, "BMAC-misc", dev); + ret =3D request_irq(dev->irq, bmac_misc_intr, IRQF_NO_AUTOEN, "BMAC-misc"= , dev); if (ret) { printk(KERN_ERR "BMAC: can't get irq %d\n", dev->irq); goto err_out_iounmap_rx; @@ -1336,7 +1336,6 @@ static int bmac_probe(struct macio_dev *mdev, const s= truct of_device_id *match) /* Mask chip interrupts and disable chip, will be * re-enabled on open() */ - disable_irq(dev->irq); pmac_call_feature(PMAC_FTR_BMAC_ENABLE, macio_get_of_node(bp->mdev), 0, 0= ); =20 if (register_netdev(dev) !=3D 0) { --=20 2.34.1