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 9DC1D391E50; Wed, 24 Jun 2026 07:24:38 +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=1782285878; cv=none; b=JOQQHYfznK2lfJK1sp1kWeD7F4n87bj3x2mDdI7Ep95d0QllcO8nZ+dWUCRy9dlfzBeLZr6Iyv7OkzHa0JeS1b4dF1yPhD2mEpLmb9Ke94z7j5xIC8iVy7TxBNIqa7sfHyAjVe0UIakQKmgHhK2O3Q9Vp0i6zjLQ1EzqrHDcLnM= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1782285878; c=relaxed/simple; bh=QojzKA+AL9yufTBuhEvjrEAhb+khx3/xRIV8QBdLzG8=; h=From:Date:Subject:MIME-Version:Content-Type:Message-Id:To:Cc; b=YbffDg0DAeY2TM5k+9MI6WjQCa++/t8kIVfFX1ivTpT1U0IYRXA+5sMUtNJD8ZwpQhAEOoxInJPyYun+WOu9bTiRp/cKKDcSux58n2ufNUxu6b3dJ622fnheq6UyIl51OND1HsSVAK1s/RK7LWuTSpzzKWyPbfgs2NX0aC9Dm/A= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=kernel.org header.i=@kernel.org header.b=NeTVbvGF; arc=none smtp.client-ip=10.30.226.201 Authentication-Results: smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=kernel.org header.i=@kernel.org header.b="NeTVbvGF" Received: by smtp.kernel.org (Postfix) with ESMTPS id 2B638C2BCB4; Wed, 24 Jun 2026 07:24:38 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=k20201202; t=1782285878; bh=QojzKA+AL9yufTBuhEvjrEAhb+khx3/xRIV8QBdLzG8=; h=From:Date:Subject:To:Cc:Reply-To:From; b=NeTVbvGFlvNeKvstEQtBfIyYGoJnm7ajizM/Lp9dOFDZ0h+vIgcWB3uDx7zEpMmfh o6UAI4ESmvpaSiMJEUkI7Yr5WFr2K9LUVIKMsDRNN+XNuI2utxOKNutQi1Ye3Xi4nX hVXYcQ5alfZz57dKEdgn0HT4ns1Az70rrsmli1u69iWmI2WtN0CovChJHeCoWVzWUo 8o1KPiS6SVvaRWGZAV0hUmvg2jHtk79nH8r3F+0zbYgKIMatz1BwWGiI+9cvC7HtU2 4oiMZXUexp5fIVFXd6p1wOMYKilSd5ChPQ+WTSKjYxCKx8IWWWtq8GRuq7oLNZtZVM VTW+waKQ8eM7A== Received: from aws-us-west-2-korg-lkml-1.web.codeaurora.org (localhost.localdomain [127.0.0.1]) by smtp.lore.kernel.org (Postfix) with ESMTP id 026BCCDB47F; Wed, 24 Jun 2026 07:24:38 +0000 (UTC) From: Xianwei Zhao via B4 Relay Date: Wed, 24 Jun 2026 07:24:34 +0000 Subject: [PATCH] rtc: amlogic-a4: clear unsupported update interrupt feature Precedence: bulk X-Mailing-List: linux-rtc@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Type: text/plain; charset="utf-8" Content-Transfer-Encoding: 7bit Message-Id: <20260624-rtc-feature-v1-1-42dccd22c0ee@amlogic.com> X-B4-Tracking: v=1; b=H4sIADKGO2oC/x3MQQqAIBBA0avIrBNMRaqrRAuxsWZjMVoE4d2Tl m/x/wsZmTDDJF5gvCnTkRr6TkDYfdpQ0toMWmmnnLaSS5ARfbkYpTIBTTSDNX6EVpyMkZ7/Ni+ 1fiM27XxdAAAA X-Change-ID: 20260624-rtc-feature-03ce3f3843a9 To: Yiting Deng , Alexandre Belloni Cc: linux-amlogic@lists.infradead.org, linux-rtc@vger.kernel.org, linux-kernel@vger.kernel.org, Xianwei Zhao X-Mailer: b4 0.14.3 X-Developer-Signature: v=1; a=ed25519-sha256; t=1782285876; l=1071; i=xianwei.zhao@amlogic.com; s=20251216; h=from:subject:message-id; bh=pJ5eX/skfag9z0pkWfC/zXmkphBv9K7+CU5zNogQX00=; b=K8SW8U312kCtLZRTKBb2MmA6n7lo6AJUWoPjwyFhymEluNvfnNr7RierO1ahP2OjvK8nQydOZ 6+CcbiIlZ2AAj4mU+kcubK5ai8aeDsJBtdjFjvMwX5V1IViaFKEHLN5 X-Developer-Key: i=xianwei.zhao@amlogic.com; a=ed25519; pk=dWwxtWCxC6FHRurOmxEtr34SuBYU+WJowV/ZmRJ7H+k= X-Endpoint-Received: by B4 Relay for xianwei.zhao@amlogic.com/20251216 with auth_id=578 X-Original-From: Xianwei Zhao Reply-To: xianwei.zhao@amlogic.com From: Xianwei Zhao The Amlogic A4 RTC does not support update interrupt. Clear RTC_FEATURE_UPDATE_INTERRUPT before registering the RTC device to prevent userspace from enabling an unsupported RTC UIE function. Signed-off-by: Xianwei Zhao --- Clear RTC_FEATURE_UPDATE_INTERRUPT before registering the RTC device. --- drivers/rtc/rtc-amlogic-a4.c | 1 + 1 file changed, 1 insertion(+) diff --git a/drivers/rtc/rtc-amlogic-a4.c b/drivers/rtc/rtc-amlogic-a4.c index 50938c35af36..116cf095a9e9 100644 --- a/drivers/rtc/rtc-amlogic-a4.c +++ b/drivers/rtc/rtc-amlogic-a4.c @@ -379,6 +379,7 @@ static int aml_rtc_probe(struct platform_device *pdev) rtc->rtc_dev->ops = &aml_rtc_ops; rtc->rtc_dev->range_min = 0; rtc->rtc_dev->range_max = U32_MAX; + clear_bit(RTC_FEATURE_UPDATE_INTERRUPT, rtc->rtc_dev->features); return devm_rtc_register_device(rtc->rtc_dev); } --- base-commit: 851d961ff248218f681c53cf0f7f08cf8201a117 change-id: 20260624-rtc-feature-03ce3f3843a9 Best regards, -- Xianwei Zhao