From patchwork Sun May 8 17:56:38 2022 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 8bit X-Patchwork-Submitter: Jonathan Cameron X-Patchwork-Id: 12842549 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 D45DBC4332F for ; Sun, 8 May 2022 19:11:26 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S237926AbiEHTPH (ORCPT ); Sun, 8 May 2022 15:15:07 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:40144 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S239955AbiEHSAN (ORCPT ); Sun, 8 May 2022 14:00:13 -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 2EE65558C for ; Sun, 8 May 2022 10:56:23 -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 DF05EB80E48 for ; Sun, 8 May 2022 17:56:21 +0000 (UTC) Received: by smtp.kernel.org (Postfix) with ESMTPSA id A4E53C385AF; Sun, 8 May 2022 17:56:13 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=k20201202; t=1652032580; bh=BJE+A0ljdqV7O9zRI8XJoYO0P9lUebI106coz3WpzrQ=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=Uky0coHoC1OXcEK2a8OVL30bcQuQTxqySSpRxFtBoNCdav98vOQjmkMLM2E3PYui3 MFjFCQpdW3WLw+3/6i22iKkyxNug0T+bmJsbeFqp8tO36kaAWTbzx8oIAR9K6bRdHO W+N3eDb3b3B9LtY2DsYKGQdwj2PfdZ8MFbeXIHPuICcehcjDZPAinhuN0YlpVTEp0D oK3D9gWz0fuS19jUB5eHCSy5BkpHWmXFABcwOZMWrB/w8OH8/pqpa7/1MR49D/KXfN c1edyJmQuHJo84O9XA0nI8NZXocKRimnKBgHLscfPZGvN1irUCWjTXhCZLh7aO+NYK XKR4wAdg8vS4A== 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 58/92] iio: dac: ad8801: Fix alignment for DMA safety Date: Sun, 8 May 2022 18:56:38 +0100 Message-Id: <20220508175712.647246-59-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: 7f270bc9a2d9 ("iio: dac: AD8801: add Analog Devices AD8801/AD8803 support") Signed-off-by: Jonathan Cameron Acked-by: Nuno Sá --- drivers/iio/dac/ad8801.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/drivers/iio/dac/ad8801.c b/drivers/iio/dac/ad8801.c index 6be35c92d435..919e8c880697 100644 --- a/drivers/iio/dac/ad8801.c +++ b/drivers/iio/dac/ad8801.c @@ -26,7 +26,7 @@ struct ad8801_state { struct regulator *vrefh_reg; struct regulator *vrefl_reg; - __be16 data ____cacheline_aligned; + __be16 data __aligned(IIO_DMA_MINALIGN); }; static int ad8801_spi_write(struct ad8801_state *state,