From patchwork Fri Sep 6 08:23:24 2024 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Jinjie Ruan X-Patchwork-Id: 13793652 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 880083C463; Fri, 6 Sep 2024 08:14:53 +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=1725610495; cv=none; b=SVo6F8BLkMI7nQ4ZZl2WNTZtnmbgbUfBwQ85GaXTTsmVPM9XkfDHKibNsLavLNoCOrw63Dt9UGRWHnMhDrkncaWZBsR3eGPg4jd5Zjw9JIN54HMZANzu0vHITJ5fDF/eIPcyKuJjzCh71W4+i7NjcQAnYaF7UMsQMO7s/H3qBwE= ARC-Message-Signature: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1725610495; c=relaxed/simple; bh=uhGeFDmPYMSKAWPD/jrWWFXKl1eEXDz5JCdoInuqcHU=; h=From:To:CC:Subject:Date:Message-ID:In-Reply-To:References: MIME-Version:Content-Type; b=cWZA8TRxXF+1vTzH2YI7/2g59cXMuzgQXDRAiGBRZahtV86U7ldiBSxPk7Ryyb+UqtTV6uUY1p2svTluSpQhwIxQC3KFWMJigNO6SLlxRO/h7TlMbk0kRNahV9B2t6FB8/5LBXHR7LMuLv/djdfFZ6FFdGNX+cVazS5s8uBeTho= 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 [172.19.162.112]) by szxga05-in.huawei.com (SkyGuard) with ESMTP id 4X0TXh5DByz1j8D4; Fri, 6 Sep 2024 16:14:28 +0800 (CST) Received: from kwepemh500013.china.huawei.com (unknown [7.202.181.146]) by mail.maildlp.com (Postfix) with ESMTPS id 4E0BB1400DB; Fri, 6 Sep 2024 16:14:51 +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 16:14:50 +0800 From: Jinjie Ruan To: , , , , , , , , , , , , , , , , , , , , , , , , , , , , , CC: Subject: [PATCH 4/5] drm/tegra: dpaux: Use IRQF_NO_AUTOEN flag in request_irq() Date: Fri, 6 Sep 2024 16:23:24 +0800 Message-ID: <20240906082325.2677621-5-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: 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) 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: 9e532b3ad9a7 ("drm/tegra: dpaux: Disable interrupt when detached") Signed-off-by: Jinjie Ruan --- drivers/gpu/drm/tegra/dpaux.c | 4 +--- 1 file changed, 1 insertion(+), 3 deletions(-) diff --git a/drivers/gpu/drm/tegra/dpaux.c b/drivers/gpu/drm/tegra/dpaux.c index ae12d001a04b..9646dba950e0 100644 --- a/drivers/gpu/drm/tegra/dpaux.c +++ b/drivers/gpu/drm/tegra/dpaux.c @@ -517,7 +517,7 @@ static int tegra_dpaux_probe(struct platform_device *pdev) pm_runtime_enable(&pdev->dev); pm_runtime_get_sync(&pdev->dev); - err = devm_request_irq(dpaux->dev, dpaux->irq, tegra_dpaux_irq, 0, + err = devm_request_irq(dpaux->dev, dpaux->irq, tegra_dpaux_irq, IRQF_NO_AUTOEN, dev_name(dpaux->dev), dpaux); if (err < 0) { dev_err(dpaux->dev, "failed to request IRQ#%u: %d\n", @@ -525,8 +525,6 @@ static int tegra_dpaux_probe(struct platform_device *pdev) goto err_pm_disable; } - disable_irq(dpaux->irq); - dpaux->aux.transfer = tegra_dpaux_transfer; dpaux->aux.dev = &pdev->dev;