From nobody Mon Sep 29 21:17:52 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 6ADE2C25B08 for ; Tue, 16 Aug 2022 00:14:22 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1357619AbiHPAN4 (ORCPT ); Mon, 15 Aug 2022 20:13:56 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:47202 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1357224AbiHPAD4 (ORCPT ); Mon, 15 Aug 2022 20:03:56 -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 4728C168A7A; Mon, 15 Aug 2022 13:28:04 -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 D2E6C61135; Mon, 15 Aug 2022 20:28:03 +0000 (UTC) Received: by smtp.kernel.org (Postfix) with ESMTPSA id D6348C433D6; Mon, 15 Aug 2022 20:28:02 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=linuxfoundation.org; s=korg; t=1660595283; bh=Fz0Od070cEnkqYN5WQgTtuDbh/fruRSQCiM/ni+h/wg=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=IHd1e4coJ7OoQOdv+omKNQ/iIzK/e05qZMUTcD2ZgIj/tpfKu9UgI9MGhgXbGwzxz OGD7nWPepsIouUAKx1Bfnokn1MNwgsWbhBnM3zKshuIGq56WLhezJsg6BztrCs7rvd tnaEUNL/pwwH0rPOdUR5tNtc0BL2jM+x6txKxKBo= 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 0715/1157] iio: resolver: ad2s1200: Fix alignment for DMA safety Date: Mon, 15 Aug 2022 20:01:11 +0200 Message-Id: <20220815180508.128391647@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 37882314d3bdc2ae775ebb9fa8ed7a94cd1aad61 ] ____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 as far as anyone considers backporting this fix. Fixes: 0bd3d338f61b ("staging: iio: ad2s1200: Improve readability with be16= _to_cpup") Signed-off-by: Jonathan Cameron Acked-by: Nuno S=C3=A1 Link: https://lore.kernel.org/r/20220508175712.647246-89-jic23@kernel.org Signed-off-by: Sasha Levin --- drivers/iio/resolver/ad2s1200.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/drivers/iio/resolver/ad2s1200.c b/drivers/iio/resolver/ad2s120= 0.c index 9746bd935628..9d95241bdf8f 100644 --- a/drivers/iio/resolver/ad2s1200.c +++ b/drivers/iio/resolver/ad2s1200.c @@ -41,7 +41,7 @@ struct ad2s1200_state { struct spi_device *sdev; struct gpio_desc *sample; struct gpio_desc *rdvel; - __be16 rx ____cacheline_aligned; + __be16 rx __aligned(IIO_DMA_MINALIGN); }; =20 static int ad2s1200_read_raw(struct iio_dev *indio_dev, --=20 2.35.1