From mboxrd@z Thu Jan 1 00:00:00 1970 Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.remote-ip=100.103.45.18 ARC-Seal: i=1; d=subspace.kernel.org; s=arc20261015; a=rsa-sha256; cv=none; t=1794319909; b=4G37naSRZMtnnz0ph9g6Wz6h3sOSCEO8VaGJUk4PW53rOydDDRQYu62KqRHL4hk/h+cf e90TLf+2t4/Xf5p4ldRC1JtFTuAwlXo7R4Iv9jnT/6yl3v3If5rv4Q3M8SoMTg4Xn6laG yWLzkIsz43B5YAfUHoDglLLvl0nikY9fmi6wPxtti10QNrFRxqwa1C8zJYBeDBOnDPZqT FNLfMsbGTb6YNddXoZj6n+WB2do0knjOeSQQ14Qdci6dlSQGsuX+V17PGa2Nkpz7FwmJ9 0FA0DpqY49pK5M2uFUMJteNMGijhqUNqa5cxl/NAlPxiRgxpL2xBW3daWyk3OqV1Cvw== ARC-Message-Signature: i=1; d=subspace.kernel.org; s=arc20261015; a=rsa-sha256; c=relaxed/relaxed; t=1794319909; h=Received:DKIM-Signature:From:To:Cc:Subject:Date:Message-ID:X-Mailer: In-Reply-To:References:MIME-Version:Content-Transfer-Encoding; bh=d0ZOTteN1CPlOiy2YAr5oW6dGe3Ubh3qGAuvWmq2ABo=; b=SgxD/Z0UprZMZCKcitftgJQLVUXlL+ApiRkMvc+7abNASnIGWhtKLsKme4NUp1JOwLer SayIYK5mybZZg5LlXYB/tQEzizdl9IZFgD29f6Ar6EV6Pt/KjeFhe5DZoo9iQYlCAKjiY p6vhPtqEMYmIkNOr0haS9Asu6Xga1oIId1MWtoskflmmn1ezyVZd098a/AF65aH8NzhTu Lch4GwbimWbIcKh/yCMyYl7WuyDBa06C6ps9ZCAMQieD7ZwXIGBAQsYAUPD4+0lcwiurf 7vkkVZT6nZ1gvOwRosNp9uRagEXxis3LiDBVutemgWlgznohCc0gQBaJXK8lqWrsRcQ== ARC-Authentication-Results: i=1; smtp.subspace.kernel.org; dkim=pass header.d=kernel.org header.i=@kernel.org header.a=rsa-sha256 header.s=k20260515 header.b=CvvBg2x7; arc=none smtp.remote-ip=100.103.45.18 Received: from smtp.kernel.org (quasi.space.kernel.org [100.103.45.18]) (using TLSv1.3 with cipher TLS_AES_256_GCM_SHA384 (256/256 bits) key-exchange X25519 server-signature ECDSA (prime256v1)) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id 99B6060A2623 for ; Tue, 10 Nov 2026 14:11:49 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=kernel.org header.i=@kernel.org header.a=rsa-sha256 header.s=k20260515 header.b=CvvBg2x7 Received: by smtp.kernel.org (Postfix) with ESMTPSA id B06EC1F008A6; Tue, 10 Nov 2026 14:11:48 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=kernel.org; s=k20260515; t=1794319909; bh=d0ZOTteN1CPlOiy2YAr5oW6dGe3Ubh3qGAuvWmq2ABo=; h=From:To:Cc:Subject:Date:In-Reply-To:References; b=CvvBg2x7g895j6eThu72y7e/B/mgxYnJtbzzsT//YoOKT1rp6O0c9Lji9R2T9uGGS glYUHAgCtbGd9QeaO8hfMLDm0uSz7IfhHJoAX6iaNYFBO7Mx3qPy6BiQZOhWIbNWX9 l2Iceswg5QzJbDjgI/9qsw2EUzEJLKLySrNxN9eroS87UCObuukYTBPWLXA0TsEUFj 3tPE3NPqFvNoNmxqc0Qgjyw0ShsWdr8kkOOu5gSRaQfdKyXr7cFO24rOlAMU3DXrDN 33hsgsO6FBxgR9VXqsVpZSErDRjLMhIe70vFVf09VRKYwVY0KrjtuLYD9NvjoWzSTg n7y6Ve5sVTVow== From: Sasha Levin To: stable@vger.kernel.org Cc: David Heidelberg , Lee Jones , Sasha Levin Subject: [PATCH 5.10.y 2/2] mfd: wcd934x: set DMA mask on parent to silence "DMA mask not set" Date: Tue, 10 Nov 2026 09:11:45 -0500 Message-ID: <20261110141054.1839848-2-sashal@kernel.org> X-Mailer: git-send-email 2.53.0 In-Reply-To: <20261110141054.1839848-1-sashal@kernel.org> References: <20261107061653-failed-5.10-b296be1dc008@kernel.org> <20261110141054.1839848-1-sashal@kernel.org> X-Mailing-List: stable@vger.kernel.org List-Id: List-Post: List-Help: List-Subscribe: List-Unsubscribe: List-Owner: Precedence: list MIME-Version: 1.0 Content-Transfer-Encoding: 8bit From: David Heidelberg [ Upstream commit b296be1dc008fe3a536341afae01f66bb302e67f ] The wcd934x MFD parent (a slim_device) never initializes its dma_mask/coherent_dma_mask. When the DT-aware children pass through of_dma_configure() this triggers the "DMA mask not set" warning for each child. Cc: stable@vger.kernel.org Fixes: f959dcd6ddfd ("dma-direct: Fix potential NULL pointer dereference") Assisted-by: tencent:hy3 Signed-off-by: David Heidelberg Link: https://patch.msgid.link/20260903-wcd-dma-v2-1-189cff560a28@ixit.cz Signed-off-by: Lee Jones Signed-off-by: Sasha Levin --- drivers/mfd/wcd934x.c | 6 ++++++ 1 file changed, 6 insertions(+) diff --git a/drivers/mfd/wcd934x.c b/drivers/mfd/wcd934x.c index d725e7fca392b..6c17340ad3360 100644 --- a/drivers/mfd/wcd934x.c +++ b/drivers/mfd/wcd934x.c @@ -2,6 +2,7 @@ // Copyright (c) 2019, Linaro Limited #include +#include #include #include #include @@ -214,6 +215,11 @@ static int wcd934x_slim_probe(struct slim_device *sdev) struct gpio_desc *reset_gpio; int ret; + ret = dma_coerce_mask_and_coherent(dev, DMA_BIT_MASK(32)); + if (ret) + return dev_err_probe(dev, ret, + "Failed to set DMA mask\n"); + ddata = devm_kzalloc(dev, sizeof(*ddata), GFP_KERNEL); if (!ddata) return -ENOMEM; -- 2.53.0