From patchwork Tue May 3 08:59:34 2022 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Jonathan Cameron X-Patchwork-Id: 12835390 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 29DB7C433F5 for ; Tue, 3 May 2022 09:06:04 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S233224AbiECJJe (ORCPT ); Tue, 3 May 2022 05:09:34 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:46818 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S231558AbiECJJd (ORCPT ); Tue, 3 May 2022 05:09:33 -0400 Received: from ams.source.kernel.org (ams.source.kernel.org [145.40.68.75]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id CF2DA22BF0 for ; Tue, 3 May 2022 02:06:01 -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 83730B81CA7 for ; Tue, 3 May 2022 09:06:00 +0000 (UTC) Received: by smtp.kernel.org (Postfix) with ESMTPSA id 4AA01C385B2; Tue, 3 May 2022 09:05:50 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=k20201202; t=1651568759; bh=OMXv4W90qHtgOaXeSLQQJLpz4PychbUbHGw5M9Mzm8o=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=ESHHJHUYv7S07nkA4QsllWinnzeJrX97x/S51PkgPBN+JjOkSNXCuz7NcWM5GeBBq pb9Wdc9a9taSQ4jc1hQdHXyxLuzhPgpV8mLSYkjRTq/SUpFBwLXYxaXE737A+XB4X8 c9Zozrw1AdUgJjSr8MYylBoDjdsEUJv255quVu7G1yPEq6J3gF9BwYf9AxelyUdJw+ F+6s0aqAZxDd5YYQu/okLZNp1E7pD+da7AG8vZPgEmTwnNs12IgLmnz1obrTuSlhHF PRET5Xz23DZWqUeMCx+Z2X2V71qhsaIByikHHNbQaExNJZZxpW2yCzTYvxZPM9ukk/ AuYPx07AogAIA== 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 91/92] iio: temp: max31865: Fix alignment for DMA safety Date: Tue, 3 May 2022 09:59:34 +0100 Message-Id: <20220503085935.1533814-92-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: e112dc4e18ea ("iio: temperature: Add MAX31865 RTD Support") Signed-off-by: Jonathan Cameron Cc: Navin Sankar Velliangiri --- drivers/iio/temperature/max31865.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/drivers/iio/temperature/max31865.c b/drivers/iio/temperature/max31865.c index 86c3f3509a26..e68cda4d25dc 100644 --- a/drivers/iio/temperature/max31865.c +++ b/drivers/iio/temperature/max31865.c @@ -53,7 +53,7 @@ struct max31865_data { struct mutex lock; bool filter_50hz; bool three_wire; - u8 buf[2] ____cacheline_aligned; + u8 buf[2] __aligned(IIO_ALIGN); }; static int max31865_read(struct max31865_data *data, u8 reg,