From patchwork Sun May 8 17:56:15 2022 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 8bit X-Patchwork-Submitter: Jonathan Cameron X-Patchwork-Id: 12842568 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 340A9C433EF for ; Sun, 8 May 2022 19:12:35 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S229964AbiEHTQN (ORCPT ); Sun, 8 May 2022 15:16:13 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:39114 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S239209AbiEHR5R (ORCPT ); Sun, 8 May 2022 13:57:17 -0400 Received: from dfw.source.kernel.org (dfw.source.kernel.org [139.178.84.217]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id F21E8DFEA for ; Sun, 8 May 2022 10:53:26 -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 8B48161208 for ; Sun, 8 May 2022 17:53:26 +0000 (UTC) Received: by smtp.kernel.org (Postfix) with ESMTPSA id 1417FC385B1; Sun, 8 May 2022 17:53:18 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=k20201202; t=1652032406; bh=Jb1At6+A/8Hu+371M2fsZSgO1Ydy+iQ5u6rLkmRIr+M=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=RSiOKEUPW1trSDSZu0E0U0z5oi/pEANgk2CmCPPWzJR/h2btMCyna5oUmynYraAT4 Xvuzx0jlPBq4fmvnnzujSLzkZBwZzXTwQqnCd5HGNjwCoIUqIR+BCk17bA4C20CMT/ x0f8QEIXcpeVrbWgZBUvd0l0MZChzUikhJMp2X8LjnT8xDm3QnEFh4Zpzn3OpCWnCZ BvmYD/VkA6E8GUg3oudzWp3U3tvcjMZnm7Pc4YrEHUj6fkMLk+3WFGdRYElPxa//Kc b0t57ylHO2Ugz8qH0kOYl8xFYDZGIouV97NaJ2AwgunXd8FWbQd+4DDFbnEEeF/aBp XI5Oz+UoUCSzA== From: Jonathan Cameron To: linux-iio@vger.kernel.org Cc: Alexandru Lazar , Akinobu Mita , Alexandru Tachici , Antoniu Miclaus , Charles-Antoine Couret , Cosmin Tanislav , David Lechner , Ivan Mikhaylov , Jacopo Mondi , Jean-Baptiste Maneyrol , Lars-Peter Clausen , Marcelo Schmitt , =?utf-8?q?M=C3=A5rten_Lindahl?= , Matt Ranostay , 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 v2 35/92] iio: adc: ti-ads131e08: Fix alignment for DMA safety Date: Sun, 8 May 2022 18:56:15 +0100 Message-Id: <20220508175712.647246-36-jic23@kernel.org> X-Mailer: git-send-email 2.36.0 In-Reply-To: <20220508175712.647246-1-jic23@kernel.org> References: <20220508175712.647246-1-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_DMA_MINALIGN definition. Fixes: d935eddd2799 ("iio: adc: Add driver for Texas Instruments ADS131E0x ADC family") Signed-off-by: Jonathan Cameron Cc: Tomislav Denis Acked-by: Nuno Sá --- drivers/iio/adc/ti-ads131e08.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/drivers/iio/adc/ti-ads131e08.c b/drivers/iio/adc/ti-ads131e08.c index 0c2025a22575..0dd9a50a9138 100644 --- a/drivers/iio/adc/ti-ads131e08.c +++ b/drivers/iio/adc/ti-ads131e08.c @@ -105,7 +105,7 @@ struct ads131e08_state { s64 ts __aligned(8); } tmp_buf; - u8 tx_buf[3] ____cacheline_aligned; + u8 tx_buf[3] __aligned(IIO_DMA_MINALIGN); /* * Add extra one padding byte to be able to access the last channel * value using u32 pointer