From patchwork Tue May 3 08:59:24 2022 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Jonathan Cameron X-Patchwork-Id: 12835380 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 4FC64C433EF for ; Tue, 3 May 2022 09:04:35 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S233217AbiECJID (ORCPT ); Tue, 3 May 2022 05:08:03 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:45126 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S233215AbiECJIC (ORCPT ); Tue, 3 May 2022 05:08:02 -0400 Received: from ams.source.kernel.org (ams.source.kernel.org [145.40.68.75]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 232471BEA4 for ; Tue, 3 May 2022 02:04:28 -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 C06FBB81C97 for ; Tue, 3 May 2022 09:04:26 +0000 (UTC) Received: by smtp.kernel.org (Postfix) with ESMTPSA id 17986C385A4; Tue, 3 May 2022 09:04:15 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=k20201202; t=1651568665; bh=6ahk6GPr3iG/AnzIywU8mEvEbxtAE4DCjfpABrv1ZQM=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=YSQ9HQoTOeiq8CGsVIcKzrTroxkKlhDiBQtBiK9vooFTFFQi7M3Lh7kgaXKpUdZVq NR5UAwBQSzGjVUVuEBEaQgPFyg/N34Nwdx35W0F5ohGehYckyPBbdWCN6LzEqR18Zg sH5MsCpQZhX5BXLZgwuXkMFq64t+7LW3PTf06sdbLfGhur2XLoVkWgxP59G8/bmqCj +sYR8+pw70Fg0t5MX3AXMYUvzTgWbTBd5iejEn7bjICDHfQMxMsvzBl4Wz6ZkhlYtF kocbEEWqhzAKA6x2/Mll4Nj76GqvqG31SFTqNrW8B3Qv1buIePZHMjFcL0cPhRfZul tkd0NB99cA1Nw== From: Jonathan Cameron To: linux-iio@vger.kernel.org Cc: Akinobu Mita , Alexandru Lazar , Alexandru Tachici , Antoniu Miclaus , Charles-Antoine Couret , Cosmin Tanislav , Cristian Pop , David Lechner , Ivan Mikhaylov , Jacopo Mondi , Jean-Baptiste Maneyrol , Lars-Peter Clausen , Marcelo Schmitt , =?utf-8?q?M=C3=A5rten_Lindahl?= , Matt Ranostay , Michael Hennerich , Michael Welling , Mugilraj Dhavachelvan , Navin Sankar Velliangiri , =?utf-8?q?Nuno_S=C3=A1?= , Paul Cercueil , Phil Reid , Puranjay Mohan , Ricardo Ribalda , Robert Jones , Rui Miguel Silva , Sean Nyekjaer , Tomas Melin , Tomislav Denis , =?utf-8?q?Uwe_Kleine-K=C3=B6nig?= , Jonathan Cameron Subject: [PATCH 81/92] iio: potentiometer: ad5272: Fix alignment for DMA safety Date: Tue, 3 May 2022 09:59:24 +0100 Message-Id: <20220503085935.1533814-82-jic23@kernel.org> X-Mailer: git-send-email 2.36.0 In-Reply-To: <20220503085935.1533814-1-jic23@kernel.org> References: <20220503085935.1533814-1-jic23@kernel.org> MIME-Version: 1.0 Precedence: bulk List-ID: X-Mailing-List: linux-iio@vger.kernel.org From: Jonathan Cameron ____cacheline_aligned is an insufficient guarantee for non-coherent DMA on platforms with 128 byte cachelines above L1. Switch to the updated IIO_ALIGN definition. Fixes: 79e8a32d2aa9 ("iio: ad5272: Add support for Analog Devices digital potentiometers") Signed-off-by: Jonathan Cameron Cc: Phil Reid Reviewed-by: Phil Reid --- drivers/iio/potentiometer/ad5272.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/drivers/iio/potentiometer/ad5272.c b/drivers/iio/potentiometer/ad5272.c index d8cbd170262f..e023c0f92242 100644 --- a/drivers/iio/potentiometer/ad5272.c +++ b/drivers/iio/potentiometer/ad5272.c @@ -50,7 +50,7 @@ struct ad5272_data { struct i2c_client *client; struct mutex lock; const struct ad5272_cfg *cfg; - u8 buf[2] ____cacheline_aligned; + u8 buf[2] __aligned(IIO_ALIGN); }; static const struct iio_chan_spec ad5272_channel = {