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 6D91B1F76DE; Tue, 3 Dec 2024 15:31:37 +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=1733239897; cv=none; b=gPaJ80qEzLLmyFRQYq2C1gxkCpk07rwjNXF7EVsc2+FWWWdt6Zu9SXsb12FMg2r6aweqFJWaxILsrnciXuWn+5Fjj336WKxPGMipl3D2egF70d4Pe/zqPUBRm/dUE5X3uH01FrPhC/g9ou19eQn6Tyfy0ykrntHOgVwTLfindFI= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1733239897; c=relaxed/simple; bh=v8GLLvtzfjVVUdRHIvRVHaLVaxx1sFJBSfpqAtBPXCo=; h=From:To:Cc:Subject:Date:Message-ID:In-Reply-To:References: MIME-Version; b=OUGtt1gBwi8t3FyKpqMsXWLNbT7IMRWOIocBvvGkivw+h8s+qE/tL5Pi0UC8lT6He+Y/YnpQLRgkTU72awYpJkioy+U5yevGheVdxt9g90kXY4lGmmv0iU5Zp8bhnhWuKWLJWiduGWt4ujqrvA5vrqPg+kNOuc0g26Avf+TBa5E= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dkim=pass (1024-bit key) header.d=linuxfoundation.org header.i=@linuxfoundation.org header.b=qskBcW44; 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="qskBcW44" Received: by smtp.kernel.org (Postfix) with ESMTPSA id 8F87CC4CED6; Tue, 3 Dec 2024 15:31:36 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=linuxfoundation.org; s=korg; t=1733239897; bh=v8GLLvtzfjVVUdRHIvRVHaLVaxx1sFJBSfpqAtBPXCo=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=qskBcW44XnBoOc7ssbL6DdFOoTGGP5EnuLlvhb0EGUgPLugDieF9N9hxwVJwT9WJX 0pMSBQLnIMvjzktMUgGZk1o4gfRb/GU+IkU7q1sZLGvrhUBpVql03LlLW9P6y8/LPt hH6gSsUrwi2Xuw7xu+eCA8DkPU/qy6drLhRFwQoU= 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 6.11 771/817] rtc: st-lpc: Use IRQF_NO_AUTOEN flag in request_irq() Date: Tue, 3 Dec 2024 15:45:43 +0100 Message-ID: <20241203144026.109745363@linuxfoundation.org> X-Mailer: git-send-email 2.47.1 In-Reply-To: <20241203143955.605130076@linuxfoundation.org> References: <20241203143955.605130076@linuxfoundation.org> User-Agent: quilt/0.67 X-stable: review X-Patchwork-Hint: ignore Precedence: bulk X-Mailing-List: patches@lists.linux.dev List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Transfer-Encoding: 8bit 6.11-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 d492a2d26600c..c6d4522411b31 100644 --- a/drivers/rtc/rtc-st-lpc.c +++ b/drivers/rtc/rtc-st-lpc.c @@ -218,15 +218,14 @@ 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_enabled(&pdev->dev, NULL); if (IS_ERR(rtc->clk)) -- 2.43.0