From nobody Mon Sep 29 22:46:58 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 92FACC2BB43 for ; Tue, 16 Aug 2022 00:14:24 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S234026AbiHPAOD (ORCPT ); Mon, 15 Aug 2022 20:14:03 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:49024 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1357256AbiHPAEA (ORCPT ); Mon, 15 Aug 2022 20:04:00 -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 CBA4E16F8B4; Mon, 15 Aug 2022 13:28:16 -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 DD30461072; Mon, 15 Aug 2022 20:28:15 +0000 (UTC) Received: by smtp.kernel.org (Postfix) with ESMTPSA id E3F44C433C1; Mon, 15 Aug 2022 20:28:14 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=linuxfoundation.org; s=korg; t=1660595295; bh=JDPkLbfh5nyLlgAFXZPDXbHbeiCTZRuj1QDiLvOJTDQ=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=SnpSXsIn7SSVciQa9JytophKTceWF8M4Ox0PZHHLdX+82pWw5IEtNvOzymA0YGiyt zI1JNbsHK6VXSZmhYlfO+8C8WfgSfLy9UuM3yCQ4CKf6julo4dhnyy6Azppa0BbqUW UKI07jKFXObJwLGOsPOTLvTHtMe02xzPWrwfJLyQ= From: Greg Kroah-Hartman To: linux-kernel@vger.kernel.org Cc: Greg Kroah-Hartman , stable@vger.kernel.org, Jonathan Cameron , Navin Sankar Velliangiri , =?UTF-8?q?Nuno=20S=C3=A1?= , Sasha Levin Subject: [PATCH 5.19 0718/1157] iio: temp: max31865: Fix alignment for DMA safety Date: Mon, 15 Aug 2022 20:01:14 +0200 Message-Id: <20220815180508.222759186@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 ecdef5b8317cdf18acb46223e087f04a226fa619 ] ____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: e112dc4e18ea ("iio: temperature: Add MAX31865 RTD Support") Signed-off-by: Jonathan Cameron Cc: Navin Sankar Velliangiri Acked-by: Nuno S=C3=A1 Link: https://lore.kernel.org/r/20220508175712.647246-92-jic23@kernel.org Signed-off-by: Sasha Levin --- drivers/iio/temperature/max31865.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/drivers/iio/temperature/max31865.c b/drivers/iio/temperature/m= ax31865.c index e3bb78184c6e..29e23652ba5a 100644 --- a/drivers/iio/temperature/max31865.c +++ b/drivers/iio/temperature/max31865.c @@ -55,7 +55,7 @@ struct max31865_data { struct mutex lock; bool filter_50hz; bool three_wire; - u8 buf[2] ____cacheline_aligned; + u8 buf[2] __aligned(IIO_DMA_MINALIGN); }; =20 static int max31865_read(struct max31865_data *data, u8 reg, --=20 2.35.1