From nobody Mon Sep 29 20:17:19 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 7FB35C00140 for ; Tue, 16 Aug 2022 00:15:20 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1352582AbiHPAPS (ORCPT ); Mon, 15 Aug 2022 20:15:18 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:46794 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1351140AbiHPAE2 (ORCPT ); Mon, 15 Aug 2022 20:04:28 -0400 Received: from ams.source.kernel.org (ams.source.kernel.org [IPv6:2604:1380:4601:e00::1]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id A8F751705DF; Mon, 15 Aug 2022 13:28:21 -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 ams.source.kernel.org (Postfix) with ESMTPS id A4840B8119A; Mon, 15 Aug 2022 20:28:19 +0000 (UTC) Received: by smtp.kernel.org (Postfix) with ESMTPSA id 00608C433C1; Mon, 15 Aug 2022 20:28:17 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=linuxfoundation.org; s=korg; t=1660595298; bh=YXN664tHlqpao73ub4aCiZFPrlz/XdG5wd1w5nCQIKI=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=mZJZAyzQytWkWK7P53IocHSw0Rvaih3GlqfoeeHhuo9rOji898qfE4SEgIWMXKlre 5M9adG1upUQXyjimPG6fxm4bhrEjEWKuu5WOLtOnTRYwBXQ/x2cDE+wYV1Vyc2rOZG Gpv+mLSWGvqUAYz63I4qcwQNwjLeUnyyshCbw6Fg= From: Greg Kroah-Hartman To: linux-kernel@vger.kernel.org Cc: Greg Kroah-Hartman , stable@vger.kernel.org, Jonathan Cameron , Matt Ranostay , =?UTF-8?q?Nuno=20S=C3=A1?= , Sasha Levin Subject: [PATCH 5.19 0719/1157] iio: temp: maxim_thermocouple: Fix alignment for DMA safety Date: Mon, 15 Aug 2022 20:01:15 +0200 Message-Id: <20220815180508.253279329@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 10897f34309b3c7bc14698407436c82d11c07f47 ] ____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: 1f25ca11d84a ("iio: temperature: add support for Maxim thermocouple = chips") Signed-off-by: Jonathan Cameron Cc: Matt Ranostay Acked-by: Nuno S=C3=A1 Link: https://lore.kernel.org/r/20220508175712.647246-93-jic23@kernel.org Signed-off-by: Sasha Levin --- drivers/iio/temperature/maxim_thermocouple.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/drivers/iio/temperature/maxim_thermocouple.c b/drivers/iio/tem= perature/maxim_thermocouple.c index 98c41cddc6f0..c28a7a6dea5f 100644 --- a/drivers/iio/temperature/maxim_thermocouple.c +++ b/drivers/iio/temperature/maxim_thermocouple.c @@ -122,7 +122,7 @@ struct maxim_thermocouple_data { struct spi_device *spi; const struct maxim_thermocouple_chip *chip; =20 - u8 buffer[16] ____cacheline_aligned; + u8 buffer[16] __aligned(IIO_DMA_MINALIGN); char tc_type; }; =20 --=20 2.35.1