From patchwork Fri Sep 6 08:23:23 2024 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Jinjie Ruan X-Patchwork-Id: 13793669 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 bombadil.infradead.org (bombadil.infradead.org [198.137.202.133]) (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 95CEDCE7AE8 for ; Fri, 6 Sep 2024 08:21:10 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=lists.infradead.org; s=bombadil.20210309; h=Sender:List-Subscribe:List-Help :List-Post:List-Archive:List-Unsubscribe:List-Id:Content-Type: Content-Transfer-Encoding:MIME-Version:References:In-Reply-To:Message-ID:Date :Subject:CC:To:From:Reply-To:Content-ID:Content-Description:Resent-Date: Resent-From:Resent-Sender:Resent-To:Resent-Cc:Resent-Message-ID:List-Owner; bh=1qrPVAfYctgmw7fWHl8XYU3OEyMkmPfzIm08WzfTIvA=; b=ZuW1FjFRBWkEBrYQLv8Zk+GQbW QNjmUPoUmbUS2nzR3QI1fCIDRk3hNOSL3E2+FBPa9unXCfezuuiiEkPMWhPV7sCo+pvedYqMu1S/Q c6m12WLoPE3nVPL44uAFU1fZ1VxtWiZBoTZkRoP2PIZWwy3ToP/ogup5HS0i9h3HJBgzzmIU2e2gs mLQewJYSuoPL6ADUFH7lUhVtvCj2w2gXjsbKg0RprRzYYWRsjupxQ7oU/XMH7mIY0aZnnODR8A2+V 3Mxm2VO2aMA0hE7l3G931yZ0oQsHcVEvny08JUuBRlz+C1JJIgkXmUlV+7ABlGvmvrZRLu5ER4xH3 vvz2YuTw==; Received: from localhost ([::1] helo=bombadil.infradead.org) by bombadil.infradead.org with esmtp (Exim 4.97.1 #2 (Red Hat Linux)) id 1smUDD-0000000BHny-1ZJf; Fri, 06 Sep 2024 08:20:59 +0000 Received: from szxga08-in.huawei.com ([45.249.212.255]) by bombadil.infradead.org with esmtps (Exim 4.97.1 #2 (Red Hat Linux)) id 1smU7Q-0000000BFuc-1zay for linux-arm-kernel@lists.infradead.org; Fri, 06 Sep 2024 08:15:03 +0000 Received: from mail.maildlp.com (unknown [172.19.162.254]) by szxga08-in.huawei.com (SkyGuard) with ESMTP id 4X0TWy3dGXz1P9Gk; Fri, 6 Sep 2024 16:13:50 +0800 (CST) Received: from kwepemh500013.china.huawei.com (unknown [7.202.181.146]) by mail.maildlp.com (Postfix) with ESMTPS id 5EFB31800FE; Fri, 6 Sep 2024 16:14:50 +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 16:14:49 +0800 From: Jinjie Ruan To: , , , , , , , , , , , , , , , , , , , , , , , , , , , , , CC: Subject: [PATCH 3/5] drm/imx/ipuv3: Use IRQF_NO_AUTOEN flag in request_irq() Date: Fri, 6 Sep 2024 16:23:23 +0800 Message-ID: <20240906082325.2677621-4-ruanjinjie@huawei.com> X-Mailer: git-send-email 2.34.1 In-Reply-To: <20240906082325.2677621-1-ruanjinjie@huawei.com> References: <20240906082325.2677621-1-ruanjinjie@huawei.com> 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-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20240906_011500_931826_55DCC0D7 X-CRM114-Status: GOOD ( 10.08 ) X-BeenThere: linux-arm-kernel@lists.infradead.org X-Mailman-Version: 2.1.34 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Sender: "linux-arm-kernel" Errors-To: linux-arm-kernel-bounces+linux-arm-kernel=archiver.kernel.org@lists.infradead.org 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. Fixes: 47b1be5c0f4e ("staging: imx/drm: request irq only after adding the crtc") Signed-off-by: Jinjie Ruan Reviewed-by: Dmitry Baryshkov --- drivers/gpu/drm/imx/ipuv3/ipuv3-crtc.c | 6 ++---- 1 file changed, 2 insertions(+), 4 deletions(-) diff --git a/drivers/gpu/drm/imx/ipuv3/ipuv3-crtc.c b/drivers/gpu/drm/imx/ipuv3/ipuv3-crtc.c index ef29c9a61a46..99db53e167bd 100644 --- a/drivers/gpu/drm/imx/ipuv3/ipuv3-crtc.c +++ b/drivers/gpu/drm/imx/ipuv3/ipuv3-crtc.c @@ -410,14 +410,12 @@ static int ipu_drm_bind(struct device *dev, struct device *master, void *data) } ipu_crtc->irq = ipu_plane_irq(ipu_crtc->plane[0]); - ret = devm_request_irq(ipu_crtc->dev, ipu_crtc->irq, ipu_irq_handler, 0, - "imx_drm", ipu_crtc); + ret = devm_request_irq(ipu_crtc->dev, ipu_crtc->irq, ipu_irq_handler, + IRQF_NO_AUTOEN, "imx_drm", ipu_crtc); if (ret < 0) { dev_err(ipu_crtc->dev, "irq request failed with %d.\n", ret); return ret; } - /* Only enable IRQ when we actually need it to trigger work. */ - disable_irq(ipu_crtc->irq); return 0; }