From patchwork Sun May 8 17:56:00 2022 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 8bit X-Patchwork-Submitter: Jonathan Cameron X-Patchwork-Id: 12842613 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 5B289C433F5 for ; Sun, 8 May 2022 19:14:37 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S229648AbiEHTSZ (ORCPT ); Sun, 8 May 2022 15:18:25 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:38654 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S239145AbiEHRza (ORCPT ); Sun, 8 May 2022 13:55:30 -0400 Received: from ams.source.kernel.org (ams.source.kernel.org [145.40.68.75]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 17E6CDFEA for ; Sun, 8 May 2022 10:51:40 -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 B6395B80E5A for ; Sun, 8 May 2022 17:51:38 +0000 (UTC) Received: by smtp.kernel.org (Postfix) with ESMTPSA id B5464C385AF; Sun, 8 May 2022 17:51:30 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=k20201202; t=1652032297; bh=EbmcmnmvG/3cvJZUaL1AvjWZebNy09ApuXYOhXg9cj0=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=Byhwb8Y9FSKrcQNn3y9a3lcjdnfHbmEDNqMUS6qaToyc4iFLyxNpkN3ZZ8XGT1fFH 8CIgN7Lv9KPCS3ntHxACHqPX1MFrQG6klfNar97lnzkpUwK9995L0huwfWv0WA/8tD pSLyXTMQ6tkzq0628XuTbDQ4/jmLgASlcJSvhGVkPluSgxFXIrn2InG9pBPT8q4vF+ jrpBJrqQnzpn1iK3T28cWaZXKuoBeQi88hemLBN6PD3sHx9+KymX516yHcVCe3XHIS Oc+cevB0TznFRayk+6BdK2Yg7wVh05GAk2TK7hquXk935LzsdnbvdKJj94+Xp0YLds Qp80y7xTX9KRg== 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 20/92] iio: adc: hi8435: Fix alignment for DMA safety Date: Sun, 8 May 2022 18:56:00 +0100 Message-Id: <20220508175712.647246-21-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: 72aa29ce0a59 ("iio: adc: hi8435: Holt HI-8435 threshold detector") Signed-off-by: Jonathan Cameron Acked-by: Nuno Sá --- drivers/iio/adc/hi8435.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/drivers/iio/adc/hi8435.c b/drivers/iio/adc/hi8435.c index 8eb0140df133..771fa12bdc02 100644 --- a/drivers/iio/adc/hi8435.c +++ b/drivers/iio/adc/hi8435.c @@ -49,7 +49,7 @@ struct hi8435_priv { unsigned threshold_lo[2]; /* GND-Open and Supply-Open thresholds */ unsigned threshold_hi[2]; /* GND-Open and Supply-Open thresholds */ - u8 reg_buffer[3] ____cacheline_aligned; + u8 reg_buffer[3] __aligned(IIO_DMA_MINALIGN); }; static int hi8435_readb(struct hi8435_priv *priv, u8 reg, u8 *val)