From patchwork Fri Sep 6 08:23:21 2024 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Jinjie Ruan X-Patchwork-Id: 13793661 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 B41C93C463 for ; 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=btQ3Mwm8ET4C4qL5X99Xr9aycVTO6ThHJeO5nQ7AngiQVzOVknU9GltPcZOPeNzSscAG09S+84QR2ZYMbEn3PXSoZ0ZrsHnEFDFw/KcJa8Lp2C+MRP5J0LELNdpymFNBdGnt8HdCeC4qfSExGcRd1AlKi91clgMvR5aoC6bCKJw= ARC-Message-Signature: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1725610493; c=relaxed/simple; bh=7xqe5Gr7gKNhtbOi4IUUabnUAJrk+xYWSpSgfXz4Hy4=; h=From:To:CC:Subject:Date:Message-ID:In-Reply-To:References: MIME-Version:Content-Type; b=azyEwMbK5+rd7OGFTjjhOnpiRrqavX6JHP5qO/V14QF6C3rva+mV9U/jKfYxbapsjYKpAJIG4n8yoFu28+n6n2GHW2C7ULJ66Qmzs1DVDbO9bBAl1aTwHsKz3SY29ixl/phE53ZjykEzidEbe46G8A3Qkam0ZedVmsLzCgIxC2M= 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 4X0TRK2wz5z20nb0; Fri, 6 Sep 2024 16:09:49 +0800 (CST) Received: from kwepemh500013.china.huawei.com (unknown [7.202.181.146]) by mail.maildlp.com (Postfix) with ESMTPS id 89B471A0188; Fri, 6 Sep 2024 16:14:48 +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 16:14:47 +0800 From: Jinjie Ruan To: , , , , , , , , , , , , , , , , , , , , , , , , , , , , , CC: Subject: [PATCH 1/5] drm/atomic: Use IRQF_NO_AUTOEN flag in request_irq() Date: Fri, 6 Sep 2024 16:23:21 +0800 Message-ID: <20240906082325.2677621-2-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> Precedence: bulk X-Mailing-List: imx@lists.linux.dev 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) 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: 9021c317b770 ("drm/imx: Add initial support for DCSS on iMX8MQ") Signed-off-by: Jinjie Ruan --- drivers/gpu/drm/imx/dcss/dcss-crtc.c | 6 ++---- 1 file changed, 2 insertions(+), 4 deletions(-) diff --git a/drivers/gpu/drm/imx/dcss/dcss-crtc.c b/drivers/gpu/drm/imx/dcss/dcss-crtc.c index 31267c00782f..af91e45b5d13 100644 --- a/drivers/gpu/drm/imx/dcss/dcss-crtc.c +++ b/drivers/gpu/drm/imx/dcss/dcss-crtc.c @@ -206,15 +206,13 @@ int dcss_crtc_init(struct dcss_crtc *crtc, struct drm_device *drm) if (crtc->irq < 0) return crtc->irq; - ret = request_irq(crtc->irq, dcss_crtc_irq_handler, - 0, "dcss_drm", crtc); + ret = request_irq(crtc->irq, dcss_crtc_irq_handler, IRQF_NO_AUTOEN, + "dcss_drm", crtc); if (ret) { dev_err(dcss->dev, "irq request failed with %d.\n", ret); return ret; } - disable_irq(crtc->irq); - return 0; }