From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from smtp.kernel.org (aws-us-west-2-korg-mail-1.web.codeaurora.org [10.30.226.201]) (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 0AF8C3BB24; Tue, 3 Dec 2024 14:40:37 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=10.30.226.201 ARC-Seal:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1733236837; cv=none; b=OSnqD/WhdmFo/rWyCvgmNXKh6PR/jaLXuHM5u/iWFoT9/ZGxPkeU/w/7KgT/3+ynljCt69NI3VMnGfByExCfaKcsR9AYdpBdhiaCmbEsGbMZJZ0Akd5NKvzKAUHpSczV6XHqZn2SQkNLg3uHgwwnbD9HaiGA1w/0QsBCoRTEskU= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1733236837; c=relaxed/simple; bh=RK/LYYVwoBPsFhLe/aR/P5bBYFgoPCG/BAnn5BtwfFk=; h=From:To:Cc:Subject:Date:Message-ID:In-Reply-To:References: MIME-Version; b=hx8mo4WuNAQ2y78Qh64NNvFdH4Wc5T68t9aCp+9ezj4htz6B9h6XNslPh4n+OTKcVq32ORljX91Ds5S/POjs950/yvAK6qGSF9SRL2Ur3ORS2x+e6qZRnssX7Z0e/R0U1YVGvf4mN5pcQfQzrI1qxXIKdpYvu3pBa6qFbO+z5r4= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dkim=pass (1024-bit key) header.d=linuxfoundation.org header.i=@linuxfoundation.org header.b=DOXNzT/g; arc=none smtp.client-ip=10.30.226.201 Authentication-Results: smtp.subspace.kernel.org; dkim=pass (1024-bit key) header.d=linuxfoundation.org header.i=@linuxfoundation.org header.b="DOXNzT/g" Received: by smtp.kernel.org (Postfix) with ESMTPSA id 89C23C4CECF; Tue, 3 Dec 2024 14:40:36 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=linuxfoundation.org; s=korg; t=1733236836; bh=RK/LYYVwoBPsFhLe/aR/P5bBYFgoPCG/BAnn5BtwfFk=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=DOXNzT/g/l9PMRL5ypD6xsXORh9tq6hZaIoWdlErj0ogpIhRwzVrfIidGpfQVnW/B 0OKE+W+TmBvoi5WqRCPplw0Okz7rncxEzbs0PuMNnlxOrA2zyIdU4KylySzHzJnSbe t14llO5HLJl/+U7ib/Vt0IKhoEcrCNipESNjmFEU= From: Greg Kroah-Hartman To: stable@vger.kernel.org Cc: Greg Kroah-Hartman , patches@lists.linux.dev, Jinjie Ruan , Alexandre Belloni , Sasha Levin Subject: [PATCH 4.19 129/138] rtc: st-lpc: Use IRQF_NO_AUTOEN flag in request_irq() Date: Tue, 3 Dec 2024 15:32:38 +0100 Message-ID: <20241203141928.502277965@linuxfoundation.org> X-Mailer: git-send-email 2.47.1 In-Reply-To: <20241203141923.524658091@linuxfoundation.org> References: <20241203141923.524658091@linuxfoundation.org> User-Agent: quilt/0.67 X-stable: review X-Patchwork-Hint: ignore Precedence: bulk X-Mailing-List: stable@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Transfer-Encoding: 8bit 4.19-stable review patch. If anyone has any objections, please let me know. ------------------ From: Jinjie Ruan [ Upstream commit b6cd7adec0cf03f0aefc55676e71dd721cbc71a8 ] If request_irq() fails in st_rtc_probe(), there is no need to enable the irq, and if it succeeds, 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: b5b2bdfc2893 ("rtc: st: Add new driver for ST's LPC RTC") Signed-off-by: Jinjie Ruan Link: https://lore.kernel.org/r/20240912033727.3013951-1-ruanjinjie@huawei.com Signed-off-by: Alexandre Belloni Signed-off-by: Sasha Levin --- drivers/rtc/rtc-st-lpc.c | 5 ++--- 1 file changed, 2 insertions(+), 3 deletions(-) diff --git a/drivers/rtc/rtc-st-lpc.c b/drivers/rtc/rtc-st-lpc.c index e8a8ca3545f00..c3ad10e34ad05 100644 --- a/drivers/rtc/rtc-st-lpc.c +++ b/drivers/rtc/rtc-st-lpc.c @@ -229,15 +229,14 @@ static int st_rtc_probe(struct platform_device *pdev) return -EINVAL; } - ret = devm_request_irq(&pdev->dev, rtc->irq, st_rtc_handler, 0, - pdev->name, rtc); + ret = devm_request_irq(&pdev->dev, rtc->irq, st_rtc_handler, + IRQF_NO_AUTOEN, pdev->name, rtc); if (ret) { dev_err(&pdev->dev, "Failed to request irq %i\n", rtc->irq); return ret; } enable_irq_wake(rtc->irq); - disable_irq(rtc->irq); rtc->clk = devm_clk_get(&pdev->dev, NULL); if (IS_ERR(rtc->clk)) { -- 2.43.0