From nobody Fri Oct 24 20:28:41 2025 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by smtp.lore.kernel.org (Postfix) with ESMTP id CFCF8C2BB47 for ; Mon, 15 Aug 2022 21:42:06 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1349524AbiHOVlW (ORCPT ); Mon, 15 Aug 2022 17:41:22 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:41642 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1348806AbiHOVhf (ORCPT ); Mon, 15 Aug 2022 17:37:35 -0400 Received: from dfw.source.kernel.org (dfw.source.kernel.org [139.178.84.217]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 3AEB925FE; Mon, 15 Aug 2022 12:27:13 -0700 (PDT) Received: from smtp.kernel.org (relay.kernel.org [52.25.139.140]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by dfw.source.kernel.org (Postfix) with ESMTPS id CB5D760EF0; Mon, 15 Aug 2022 19:27:12 +0000 (UTC) Received: by smtp.kernel.org (Postfix) with ESMTPSA id 98D3BC433C1; Mon, 15 Aug 2022 19:27:10 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=linuxfoundation.org; s=korg; t=1660591632; bh=gBGcrnAMclXRoqc3CuPodqBwsRNPRWq2FLZYJfZT2Ck=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=ngDD8ye1wOel+cP/UVQO8OItSUQRA4MrAUyHEOCWpdEz+YcbPBGzHglPl2Un5tqWb L3Cs+w/U6XvF8B1naWT8RiYwutkxXpkjrqA2WaXBylKI98DeXsVCYVMoVgDQknGZQk 1eN8SrR+ebPyIQ7UHNCOFxqprynNMrgVtKh/WMDM= From: Greg Kroah-Hartman To: linux-kernel@vger.kernel.org Cc: Greg Kroah-Hartman , stable@vger.kernel.org, Jonathan Cameron , =?UTF-8?q?Nuno=20S=C3=A1?= , Sasha Levin Subject: [PATCH 5.18 0642/1095] iio: dac: ad8801: Fix alignment for DMA safety Date: Mon, 15 Aug 2022 20:00:41 +0200 Message-Id: <20220815180455.953092388@linuxfoundation.org> X-Mailer: git-send-email 2.37.2 In-Reply-To: <20220815180429.240518113@linuxfoundation.org> References: <20220815180429.240518113@linuxfoundation.org> User-Agent: quilt/0.67 MIME-Version: 1.0 Content-Type: text/plain; charset="utf-8" Content-Transfer-Encoding: quoted-printable Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org From: Jonathan Cameron [ Upstream commit 1c20292c6b60cfc60a5e652174b8063e5cc03fec ] ____cacheline_aligned is an insufficient guarantee for non-coherent DMA on platforms with 128 byte cachelines above L1. Switch to the updated IIO_DMA_MINALIGN definition. Fixes: 7f270bc9a2d9 ("iio: dac: AD8801: add Analog Devices AD8801/AD8803 su= pport") Signed-off-by: Jonathan Cameron Acked-by: Nuno S=C3=A1 Link: https://lore.kernel.org/r/20220508175712.647246-59-jic23@kernel.org Signed-off-by: Sasha Levin --- drivers/iio/dac/ad8801.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/drivers/iio/dac/ad8801.c b/drivers/iio/dac/ad8801.c index 6be35c92d435..919e8c880697 100644 --- a/drivers/iio/dac/ad8801.c +++ b/drivers/iio/dac/ad8801.c @@ -26,7 +26,7 @@ struct ad8801_state { struct regulator *vrefh_reg; struct regulator *vrefl_reg; =20 - __be16 data ____cacheline_aligned; + __be16 data __aligned(IIO_DMA_MINALIGN); }; =20 static int ad8801_spi_write(struct ad8801_state *state, --=20 2.35.1