From patchwork Sun May 8 17:55:50 2022 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 8bit X-Patchwork-Submitter: Jonathan Cameron X-Patchwork-Id: 12842558 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 7B3BAC433F5 for ; Sun, 8 May 2022 19:11:58 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S231539AbiEHTPq (ORCPT ); Sun, 8 May 2022 15:15:46 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:38176 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S239081AbiEHRyS (ORCPT ); Sun, 8 May 2022 13:54:18 -0400 Received: from ams.source.kernel.org (ams.source.kernel.org [IPv6:2604:1380:4601:e00::1]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id E8B3FDFC5 for ; Sun, 8 May 2022 10:50:26 -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 ams.source.kernel.org (Postfix) with ESMTPS id A885EB80E3F for ; Sun, 8 May 2022 17:50:25 +0000 (UTC) Received: by smtp.kernel.org (Postfix) with ESMTPSA id 35FC3C385AF; Sun, 8 May 2022 17:50:17 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=k20201202; t=1652032224; bh=b1p+Mx7omwCX3+NOIIYHpoHlGo0TeqZGG4yTncp6nGw=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=kh6xaNtMEDpsXbW7vISxLmPplZ4akHqwAsyGMLwC3fx3PlM4cgVddBYCN58NcnNky tyM18UrwkGVzLLS221oAhyesyrFxeDXQok1sM7m90RG6VuJr0Hy5jzb9asoHXFicp8 sOLi3b4xkPMvtrjqO1z4ow0d53HkEih2w1ieVzX6J3RoMNzK4n5m8PRTQVx2lYjwdp htkgXSZ7AFdes9ljWOyQyAlkNwkSVgq7oZe901C4oTequ0DGTDHSIX4lu+HA2+eAeD RzRzvNxP3ndS1EbcBV2/cl990KrODwgcR1D8L51c5cODjDn6Qkcw4r9KLlf09cUOdd CiMWQshJIKYUw== 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 10/92] iio: adc: ad7280a: Fix alignment for DMA safety Date: Sun, 8 May 2022 18:55:50 +0100 Message-Id: <20220508175712.647246-11-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: 003f1d48de52 ("staging:iio:adc:ad7280a: Split buff[2] into tx and rx parts") Signed-off-by: Jonathan Cameron Acked-by: Nuno Sá --- drivers/iio/adc/ad7280a.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/drivers/iio/adc/ad7280a.c b/drivers/iio/adc/ad7280a.c index ec9acbf12b9a..047a9d0dbcf7 100644 --- a/drivers/iio/adc/ad7280a.c +++ b/drivers/iio/adc/ad7280a.c @@ -183,7 +183,7 @@ struct ad7280_state { unsigned char cb_mask[AD7280A_MAX_CHAIN]; struct mutex lock; /* protect sensor state */ - __be32 tx ____cacheline_aligned; + __be32 tx __aligned(IIO_DMA_MINALIGN); __be32 rx; };