From nobody Mon Sep 29 20:19:38 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 CB74DC25B0D for ; Tue, 16 Aug 2022 04:36:28 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S231189AbiHPEg0 (ORCPT ); Tue, 16 Aug 2022 00:36:26 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:56014 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S231151AbiHPEfZ (ORCPT ); Tue, 16 Aug 2022 00:35:25 -0400 Received: from dfw.source.kernel.org (dfw.source.kernel.org [IPv6:2604:1380:4641:c500::1]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 7FAC7CAC87; Mon, 15 Aug 2022 13:27:48 -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 F3C2960EE9; Mon, 15 Aug 2022 20:27:47 +0000 (UTC) Received: by smtp.kernel.org (Postfix) with ESMTPSA id DBC13C433C1; Mon, 15 Aug 2022 20:27:46 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=linuxfoundation.org; s=korg; t=1660595267; bh=an4bUhqZY3EouznEf8JWpPb3qALmzTCafVC8Jys3Shk=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=WENeyCTmxQQolZMPz6I/xTTwVkVe8Nr41bH0P0EcFQD+Ej0fRsg8N/EABJNVlOT05 Pe1bCQXkYw5KMZuzJFl0OpAFW+vmBE8cEUcFyEqd9SwuM9jMezWeZNwZUz5oLkbq76 gXPIBKiKBkQ7C/7FkJ3O/IivMoKwbnnFv5ij1zKI= From: Greg Kroah-Hartman To: linux-kernel@vger.kernel.org Cc: Greg Kroah-Hartman , stable@vger.kernel.org, Jonathan Cameron , Phil Reid , =?UTF-8?q?Nuno=20S=C3=A1?= , Sasha Levin Subject: [PATCH 5.19 0710/1157] iio: potentiometer: ad5272: Fix alignment for DMA safety Date: Mon, 15 Aug 2022 20:01:06 +0200 Message-Id: <20220815180507.949624603@linuxfoundation.org> X-Mailer: git-send-email 2.37.2 In-Reply-To: <20220815180439.416659447@linuxfoundation.org> References: <20220815180439.416659447@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 da803652534271dbb4af0802bd678c759e27e6de ] ____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: 79e8a32d2aa9 ("iio: ad5272: Add support for Analog Devices digital p= otentiometers") Signed-off-by: Jonathan Cameron Reviewed-by: Phil Reid Acked-by: Nuno S=C3=A1 Link: https://lore.kernel.org/r/20220508175712.647246-82-jic23@kernel.org Signed-off-by: Sasha Levin --- drivers/iio/potentiometer/ad5272.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/drivers/iio/potentiometer/ad5272.c b/drivers/iio/potentiometer= /ad5272.c index d8cbd170262f..ed5fc0b50fe9 100644 --- a/drivers/iio/potentiometer/ad5272.c +++ b/drivers/iio/potentiometer/ad5272.c @@ -50,7 +50,7 @@ struct ad5272_data { struct i2c_client *client; struct mutex lock; const struct ad5272_cfg *cfg; - u8 buf[2] ____cacheline_aligned; + u8 buf[2] __aligned(IIO_DMA_MINALIGN); }; =20 static const struct iio_chan_spec ad5272_channel =3D { --=20 2.35.1