From patchwork Fri Sep 6 08:23:20 2024 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Jinjie Ruan X-Patchwork-Id: 826045 Received: from szxga04-in.huawei.com (szxga04-in.huawei.com [45.249.212.190]) (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 55B4B153835; Fri, 6 Sep 2024 08:14:50 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=45.249.212.190 ARC-Seal: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1725610493; cv=none; b=DqeYfYr+XKgZmIAY1Tv8WpZ/flWIcP2gjzqxjJF6+BirqXraOX+7LuqczHma3nx7ZHdcGbNoE09iG742id1KBWC9fHGVxLy1LzihKuOwBnbAGMWpdP2Py5FxKV9R2oHp0H572J0O/QFczR3lN+bgulMG9c6SEQzuMeychif+szo= ARC-Message-Signature: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1725610493; c=relaxed/simple; bh=Po6TAV+1S7sZ7uUKdRyt7P3lKgnQe0ynVUMTE7iGkEY=; h=From:To:CC:Subject:Date:Message-ID:MIME-Version:Content-Type; b=AT9CFmvq9FK/4Lmz+jvunOrgd0w3RojOLPHn7Yk8DOE8msbl6GiZfZbKvaLo6YE2lUjF4MHoXKfLaIvn59KSRNbDD86zXhMme5PZBic37gdZYNbz+OXSjiuZ/NoEQjS7Xg7IBhbzWh8Hljo72H9tCqazdHApgNKxdAUutmX31DM= 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=45.249.212.190 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 [172.19.163.17]) by szxga04-in.huawei.com (SkyGuard) with ESMTP id 4X0TRJ3BH9z20nRx; Fri, 6 Sep 2024 16:09:48 +0800 (CST) Received: from kwepemh500013.china.huawei.com (unknown [7.202.181.146]) by mail.maildlp.com (Postfix) with ESMTPS id 922161A0188; Fri, 6 Sep 2024 16:14:47 +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; Fri, 6 Sep 2024 16:14:46 +0800 From: Jinjie Ruan To: , , , , , , , , , , , , , , , , , , , , , , , , , , , , , CC: Subject: [PATCH 0/5] drm: Use IRQF_NO_AUTOEN flag in request_irq() Date: Fri, 6 Sep 2024 16:23:20 +0800 Message-ID: <20240906082325.2677621-1-ruanjinjie@huawei.com> X-Mailer: git-send-email 2.34.1 Precedence: bulk X-Mailing-List: linux-arm-msm@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 X-ClientProxiedBy: dggems706-chm.china.huawei.com (10.3.19.183) To kwepemh500013.china.huawei.com (7.202.181.146) As commit cbe16f35bee6 ("genirq: Add IRQF_NO_AUTOEN for request_irq/nmi()") said, reqeust_irq() and then disable_irq() is unsafe. In the small time gap between request_irq() and disable_irq(), interrupts can still come. IRQF_NO_AUTOEN flag can be used by drivers to request_irq(). It prevents the automatic enabling of the requested interrupt in the same safe way. With that the usage can be simplified and corrected. Jinjie Ruan (5): drm/atomic: Use IRQF_NO_AUTOEN flag in request_irq() drm/imx/dcss: Use IRQF_NO_AUTOEN flag in request_irq() drm/imx/ipuv3: Use IRQF_NO_AUTOEN flag in request_irq() drm/tegra: dpaux: Use IRQF_NO_AUTOEN flag in request_irq() drm/msm/adreno: Use IRQF_NO_AUTOEN flag in request_irq() drivers/gpu/drm/imx/dcss/dcss-crtc.c | 6 ++---- drivers/gpu/drm/imx/dcss/dcss-dtg.c | 4 +--- drivers/gpu/drm/imx/ipuv3/ipuv3-crtc.c | 6 ++---- drivers/gpu/drm/msm/adreno/a6xx_gmu.c | 4 +--- drivers/gpu/drm/tegra/dpaux.c | 4 +--- 5 files changed, 7 insertions(+), 17 deletions(-)