From nobody Mon Sep 29 20:19:39 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 3BC83C25B0D for ; Tue, 16 Aug 2022 00:14:22 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1357585AbiHPANx (ORCPT ); Mon, 15 Aug 2022 20:13:53 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:46784 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1357198AbiHPADy (ORCPT ); Mon, 15 Aug 2022 20:03:54 -0400 Received: from ams.source.kernel.org (ams.source.kernel.org [145.40.68.75]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 1581816F885; Mon, 15 Aug 2022 13:28:11 -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 70DBBB80EB1; Mon, 15 Aug 2022 20:28:10 +0000 (UTC) Received: by smtp.kernel.org (Postfix) with ESMTPSA id AE739C433C1; Mon, 15 Aug 2022 20:28:08 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=linuxfoundation.org; s=korg; t=1660595289; bh=ASbyxEyP1dD5hh8u1Hr7eG+52grw381N4ggEoI0bqnY=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=TB3DyYoy/4cWIJXq1lsxHarTahZJzX508lvAKwoYRV0KECDQsJwNtWfeqpqHcC4gm 8pEe2KIXglZPdhX9WTF+PeDH/Fnvcf4j9S2m4j2pzyVMM1vTdkTxGCb/fFPDelboAT ppQ2YhSkd5QHlQKkwQXjO4MWUABIBVBjDChXv4lE= 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 0716/1157] iio: resolver: ad2s90: Fix alignment for DMA safety Date: Mon, 15 Aug 2022 20:01:12 +0200 Message-Id: <20220815180508.163994011@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 faa05ecb1349070d874810e161b653c2220e0006 ] ____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 tag is probably not where the issue was first introduced, but is likely to be far beyond the point where anyone considers backporting this fix. Fixes: 58f08b0af857 ("staging:iio:resolver:ad2s90 general cleanup") Signed-off-by: Jonathan Cameron Acked-by: Nuno S=C3=A1 Link: https://lore.kernel.org/r/20220508175712.647246-90-jic23@kernel.org Signed-off-by: Sasha Levin --- drivers/iio/resolver/ad2s90.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/drivers/iio/resolver/ad2s90.c b/drivers/iio/resolver/ad2s90.c index d6a91f137e13..be6836e55376 100644 --- a/drivers/iio/resolver/ad2s90.c +++ b/drivers/iio/resolver/ad2s90.c @@ -24,7 +24,7 @@ struct ad2s90_state { struct mutex lock; /* lock to protect rx buffer */ struct spi_device *sdev; - u8 rx[2] ____cacheline_aligned; + u8 rx[2] __aligned(IIO_DMA_MINALIGN); }; =20 static int ad2s90_read_raw(struct iio_dev *indio_dev, --=20 2.35.1