From patchwork Sun May 8 17:56:17 2022 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 8bit X-Patchwork-Submitter: Jonathan Cameron X-Patchwork-Id: 12842616 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 34D9CC43217 for ; Sun, 8 May 2022 19:14:46 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S229532AbiEHTSf (ORCPT ); Sun, 8 May 2022 15:18:35 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:39182 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S239222AbiEHR5d (ORCPT ); Sun, 8 May 2022 13:57:33 -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 D1D97DFEA for ; Sun, 8 May 2022 10:53:42 -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 7057F6128E for ; Sun, 8 May 2022 17:53:42 +0000 (UTC) Received: by smtp.kernel.org (Postfix) with ESMTPSA id 84ED8C385AF; Sun, 8 May 2022 17:53:34 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=k20201202; t=1652032421; bh=ZPzgjJf0oTHXzSw+3ibs0o4bIXr/ELjD6A50Z0CUCFw=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=Dauyka+F6A8ztt9ZGu8+osF7qPhmVO0I1hqpHYayr5fkBRnwggtowjnRj0hV9emb2 iBM+akxxjHod2Nmc0/U8jNyYQNtzSyjC0oo2SjdpbF5pIyWzUrrIK/lIJ0yxiUVswN AwNNiV27KeBXKYIxBMHDpVwkZh//Dxzm68nlLN2az4NU2/1OnpLWtzrmlo9ad6+m0P TMMrsONfhEIElcOidAgrBaf91iKvWQhOEM+flvI9EHcuxJdhlcMZbkcfnKeO+K1IAx zW3RTmLVLM3lSX8Bzv3l2WaJrsq4S2NP7X3Bu8A1DgTGJwQqG49U7hNR2OBIGgnvCu 3DiX3zgJN42ww== 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 37/92] iio: adc: ti-ads8344: Fix alignment for DMA safety Date: Sun, 8 May 2022 18:56:17 +0100 Message-Id: <20220508175712.647246-38-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: 8dd2d7c0fed7 ("iio: adc: Add driver for the TI ADS8344 A/DC chips") Signed-off-by: Jonathan Cameron Acked-by: Nuno Sá --- drivers/iio/adc/ti-ads8344.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/drivers/iio/adc/ti-ads8344.c b/drivers/iio/adc/ti-ads8344.c index c96d2a9ba924..bbd85cb47f81 100644 --- a/drivers/iio/adc/ti-ads8344.c +++ b/drivers/iio/adc/ti-ads8344.c @@ -28,7 +28,7 @@ struct ads8344 { */ struct mutex lock; - u8 tx_buf ____cacheline_aligned; + u8 tx_buf __aligned(IIO_DMA_MINALIGN); u8 rx_buf[3]; };