From patchwork Tue Apr 6 12:34:35 2021 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: "tiantao \\(H\\)" X-Patchwork-Id: 1462834 Return-Path: X-Original-To: incoming@patchwork.ozlabs.org Delivered-To: patchwork-incoming@bilbo.ozlabs.org Authentication-Results: ozlabs.org; spf=pass (sender SPF authorized) smtp.mailfrom=vger.kernel.org (client-ip=23.128.96.18; helo=vger.kernel.org; envelope-from=linux-rtc-owner@vger.kernel.org; receiver=) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by ozlabs.org (Postfix) with ESMTP id 4FF6R14M55z9sX5 for ; Tue, 6 Apr 2021 22:34:21 +1000 (AEST) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1344097AbhDFMe1 (ORCPT ); Tue, 6 Apr 2021 08:34:27 -0400 Received: from szxga05-in.huawei.com ([45.249.212.191]:15498 "EHLO szxga05-in.huawei.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1344077AbhDFMe0 (ORCPT ); Tue, 6 Apr 2021 08:34:26 -0400 Received: from DGGEMS410-HUB.china.huawei.com (unknown [172.30.72.58]) by szxga05-in.huawei.com (SkyGuard) with ESMTP id 4FF6NQ2qgczwR1S; Tue, 6 Apr 2021 20:32:06 +0800 (CST) Received: from localhost.localdomain (10.69.192.56) by DGGEMS410-HUB.china.huawei.com (10.3.19.210) with Microsoft SMTP Server id 14.3.498.0; Tue, 6 Apr 2021 20:34:09 +0800 From: Tian Tao To: , CC: , Tian Tao Subject: [PATCH] rtc: as3722: move to use request_irq by IRQF_NO_AUTOEN flag Date: Tue, 6 Apr 2021 20:34:35 +0800 Message-ID: <1617712475-32543-1-git-send-email-tiantao6@hisilicon.com> X-Mailer: git-send-email 2.7.4 MIME-Version: 1.0 X-Originating-IP: [10.69.192.56] X-CFilter-Loop: Reflected Precedence: bulk List-ID: X-Mailing-List: linux-rtc@vger.kernel.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 because of requesting. this patch is made base on "add IRQF_NO_AUTOEN for request_irq" which is being merged: https://lore.kernel.org/patchwork/patch/1388765/ Signed-off-by: Tian Tao --- drivers/rtc/rtc-as3722.c | 3 +-- 1 file changed, 1 insertion(+), 2 deletions(-) diff --git a/drivers/rtc/rtc-as3722.c b/drivers/rtc/rtc-as3722.c index 0f21af2..3a0db97 100644 --- a/drivers/rtc/rtc-as3722.c +++ b/drivers/rtc/rtc-as3722.c @@ -201,14 +201,13 @@ static int as3722_rtc_probe(struct platform_device *pdev) dev_info(&pdev->dev, "RTC interrupt %d\n", as3722_rtc->alarm_irq); ret = devm_request_threaded_irq(&pdev->dev, as3722_rtc->alarm_irq, NULL, - as3722_alarm_irq, IRQF_ONESHOT, + as3722_alarm_irq, IRQF_ONESHOT | IRQF_NO_AUTOEN, "rtc-alarm", as3722_rtc); if (ret < 0) { dev_err(&pdev->dev, "Failed to request alarm IRQ %d: %d\n", as3722_rtc->alarm_irq, ret); return ret; } - disable_irq(as3722_rtc->alarm_irq); return 0; }