From nobody Sat Feb 7 15:17:25 2026 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 AA471C2BB43 for ; Tue, 16 Aug 2022 00:14:11 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1357042AbiHPAM6 (ORCPT ); Mon, 15 Aug 2022 20:12:58 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:46328 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1356841AbiHPADI (ORCPT ); Mon, 15 Aug 2022 20:03:08 -0400 Received: from dfw.source.kernel.org (dfw.source.kernel.org [139.178.84.217]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id CD6D94F663; Mon, 15 Aug 2022 13:24:38 -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 E48CB61072; Mon, 15 Aug 2022 20:24:37 +0000 (UTC) Received: by smtp.kernel.org (Postfix) with ESMTPSA id CF1A9C433C1; Mon, 15 Aug 2022 20:24:36 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=linuxfoundation.org; s=korg; t=1660595077; bh=XciHyWnDBuPvGWWBjFygaD/yU+5gy1/2Vrxjlwf9EMM=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=WYdN27HRHvMN4Hgsvk+XawT5207V6HsTD4HIW587CJ3zqp5C83GUpO+MNTB3yfa0v LGb+BwOa+9A85X//PkTzctjZj641uBl9a4L72qKwnPPbgZqjHJW3QjEcBL8lEexOcs 6htEeHCqEQiSBr7SP16sZyP52H3zmRH6s4GyIKW8= From: Greg Kroah-Hartman To: linux-kernel@vger.kernel.org Cc: Greg Kroah-Hartman , stable@vger.kernel.org, Jonathan Cameron , Charles-Antoine Couret , =?UTF-8?q?Nuno=20S=C3=A1?= , Sasha Levin Subject: [PATCH 5.19 0648/1157] iio: adc: ad7949: Fix alignment for DMA safety Date: Mon, 15 Aug 2022 20:00:04 +0200 Message-Id: <20220815180505.649974839@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 9c6c7eff7d4a53efd4d0818f8664259a1862665a ] ____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. Note the fixes tag predates some changes to this line of code so automated application of this fix may fail. Fixes: 7f40e0614317 ("iio:adc:ad7949: Add AD7949 ADC driver family") Signed-off-by: Jonathan Cameron Cc: Charles-Antoine Couret Acked-by: Nuno S=C3=A1 Link: https://lore.kernel.org/r/20220508175712.647246-20-jic23@kernel.org Signed-off-by: Sasha Levin --- drivers/iio/adc/ad7949.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/drivers/iio/adc/ad7949.c b/drivers/iio/adc/ad7949.c index 44bb5fde83de..ed4c1656ca75 100644 --- a/drivers/iio/adc/ad7949.c +++ b/drivers/iio/adc/ad7949.c @@ -86,7 +86,7 @@ struct ad7949_adc_chip { u8 resolution; u16 cfg; unsigned int current_channel; - u16 buffer ____cacheline_aligned; + u16 buffer __aligned(IIO_DMA_MINALIGN); __be16 buf8b; }; =20 --=20 2.35.1