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: 13793654 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org Received: from gabe.freedesktop.org (gabe.freedesktop.org [131.252.210.177]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.lore.kernel.org (Postfix) with ESMTPS id 6ADAFCE7AE0 for ; Fri, 6 Sep 2024 08:14:53 +0000 (UTC) Received: from gabe.freedesktop.org (localhost [127.0.0.1]) by gabe.freedesktop.org (Postfix) with ESMTP id C9E5F10E1E1; Fri, 6 Sep 2024 08:14:52 +0000 (UTC) Received: from szxga04-in.huawei.com (szxga04-in.huawei.com [45.249.212.190]) by gabe.freedesktop.org (Postfix) with ESMTPS id 326F010E02A; Fri, 6 Sep 2024 08:14:51 +0000 (UTC) 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 MIME-Version: 1.0 X-Originating-IP: [10.90.53.73] X-ClientProxiedBy: dggems706-chm.china.huawei.com (10.3.19.183) To kwepemh500013.china.huawei.com (7.202.181.146) X-BeenThere: dri-devel@lists.freedesktop.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: Direct Rendering Infrastructure - Development List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Errors-To: dri-devel-bounces@lists.freedesktop.org Sender: "dri-devel" 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(-)