From patchwork Tue May 3 08:58:15 2022 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Jonathan Cameron X-Patchwork-Id: 12835311 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 853BEC433F5 for ; Tue, 3 May 2022 08:53:47 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S233016AbiECI5Q (ORCPT ); Tue, 3 May 2022 04:57:16 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:35878 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S230464AbiECI5O (ORCPT ); Tue, 3 May 2022 04:57:14 -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 A67B635DD0 for ; Tue, 3 May 2022 01:53:43 -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 55D4DB81A96 for ; Tue, 3 May 2022 08:53:42 +0000 (UTC) Received: by smtp.kernel.org (Postfix) with ESMTPSA id 7A545C385A4; Tue, 3 May 2022 08:53:32 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=k20201202; t=1651568021; bh=vBaOjsU2OUBDx6O3pBDfg3rbhke5YJrf4Tzei5bc6wA=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=Qf22L9YTn5CtR7jj4SkW/KAgeDgP5tLOWrdRifXCCNMup3cBoF2XFE15IhV87ASpV otzQBg8HIzrIZIpWHQybzPO0T2JTIcW2txep6tPwj1gKni4EqOiTDrMnUQ/gKtgxpd 8zvF58FMzE/n5yQea2fa/dQoa1JEw1Te5AZSPM5mlMfrzO58HPSgivjEzr7kr0BcwY /p1U0Hdm6didy+KutqxYHlTWfXhbtvq1XxdoxMo9vzMzjajdzOaGxDqkBLRkNrfeCv DvaYBQuVtq51PKprEFK6tGS8E/MtFo+NspcuWeo3UkzWTNz582yA1FbzTLEWcg2m6k O91reU/qTuzqQ== 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 12/92] iio: adc: ad7298: Fix alignment for DMA safety Date: Tue, 3 May 2022 09:58:15 +0100 Message-Id: <20220503085935.1533814-13-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: be7fd3b86ad2 ("iio:adc:ad7298 make the tx and rx buffers __be16") Signed-off-by: Jonathan Cameron --- drivers/iio/adc/ad7298.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/drivers/iio/adc/ad7298.c b/drivers/iio/adc/ad7298.c index 3f4e73f7d35a..3461321effae 100644 --- a/drivers/iio/adc/ad7298.c +++ b/drivers/iio/adc/ad7298.c @@ -49,7 +49,7 @@ struct ad7298_state { * DMA (thus cache coherency maintenance) requires the * transfer buffers to live in their own cache lines. */ - __be16 rx_buf[12] ____cacheline_aligned; + __be16 rx_buf[12] __aligned(IIO_ALIGN); __be16 tx_buf[2]; };