From nobody Mon Sep 29 20:19:08 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 20EF6C282E7 for ; Tue, 16 Aug 2022 04:38:53 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S231516AbiHPEit (ORCPT ); Tue, 16 Aug 2022 00:38:49 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:37566 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S231324AbiHPEiS (ORCPT ); Tue, 16 Aug 2022 00:38:18 -0400 Received: from dfw.source.kernel.org (dfw.source.kernel.org [139.178.84.217]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id B4CC39F753; Mon, 15 Aug 2022 13:27:51 -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 520C361133; Mon, 15 Aug 2022 20:27:51 +0000 (UTC) Received: by smtp.kernel.org (Postfix) with ESMTPSA id 440A2C433C1; Mon, 15 Aug 2022 20:27:50 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=linuxfoundation.org; s=korg; t=1660595270; bh=9zNDmu/zOk4ltrP6s2+OhrMweR1ou95kUO+IEG4hVQQ=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=WH0sRHIBJIEUgj9beD5Kkqd2hyf3vFR40wTDtfysgMcc6jejhuQBtL6qlzlZu9/4V wa3vIGTlcd2/LXxCTSPdBG1qew+QMq56lmajN15DUsaYIjY25yW6/8AirIiXkdq8zb BEoaaGrkwnMVSwSHWn9iwevcV8mszZUjkaxhzW5I= 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 5.19 0711/1157] iio: potentiometer: max5481: Fix alignment for DMA safety Date: Mon, 15 Aug 2022 20:01:07 +0200 Message-Id: <20220815180507.983758460@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 ec1ac1c0e7a14657d729159ccfbea72f434bdaf1 ] ____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: df1fd2de118e ("iio: max5481: Add support for Maxim digital potentiom= eters") Signed-off-by: Jonathan Cameron Acked-by: Nuno S=C3=A1 Link: https://lore.kernel.org/r/20220508175712.647246-83-jic23@kernel.org Signed-off-by: Sasha Levin --- drivers/iio/potentiometer/max5481.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/drivers/iio/potentiometer/max5481.c b/drivers/iio/potentiomete= r/max5481.c index 098d144a8fdd..b40e5ac218d7 100644 --- a/drivers/iio/potentiometer/max5481.c +++ b/drivers/iio/potentiometer/max5481.c @@ -44,7 +44,7 @@ static const struct max5481_cfg max5481_cfg[] =3D { struct max5481_data { struct spi_device *spi; const struct max5481_cfg *cfg; - u8 msg[3] ____cacheline_aligned; + u8 msg[3] __aligned(IIO_DMA_MINALIGN); }; =20 #define MAX5481_CHANNEL { \ --=20 2.35.1