From patchwork Sun May 8 17:56:34 2022 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 8bit X-Patchwork-Submitter: Jonathan Cameron X-Patchwork-Id: 12842543 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 41AFCC433EF for ; Sun, 8 May 2022 19:11:21 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S232704AbiEHTO7 (ORCPT ); Sun, 8 May 2022 15:14:59 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:39946 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S239811AbiEHR7n (ORCPT ); Sun, 8 May 2022 13:59:43 -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 A415B2679 for ; Sun, 8 May 2022 10:55:52 -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 5D8CBB80D48 for ; Sun, 8 May 2022 17:55:51 +0000 (UTC) Received: by smtp.kernel.org (Postfix) with ESMTPSA id 0EE63C385AC; Sun, 8 May 2022 17:55:42 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=k20201202; t=1652032550; bh=iiMwTJrkmjEv7aSqY+eFjyuAcG+EdiCPt03rpOq3lWI=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=feXo0W8Q4Gdsyqfr0gmZ4TEfCBsqEZ4HEwFjSVbTlLcfkHsCRGTO7f0vwAbLGuB0V f+KjLrwMjEXwoC9KK0zZo6dVY+1rj1R9W4L0e7uQ6fjWvE/udBioX2B/srySWaWV3c y5MMGNQ1OWWAwqWKkYeDcZTS2qhMzyCduXMOiw0voGyDmse8nfhgj0nBUHRoVNxdA7 oOlSQGrfnqoKkuLNiw5vrSy/BZFLogqcBAC2mboSGqt5WGlDcvRWv1/G4OLeGB1T/1 eFC/Kzly1louYK9SBE27NsfNnVqUarDaHNxXWVGq9TBZItiV/4+qKcPgfxyVT8amPB nucpdxDNOL2Iw== 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 54/92] iio: dac: ad5770r: Fix alignment for DMA safety Date: Sun, 8 May 2022 18:56:34 +0100 Message-Id: <20220508175712.647246-55-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: cbbb819837f6 ("iio: dac: ad5770r: Add AD5770R support") Signed-off-by: Jonathan Cameron Cc: Alexandru Tachici Acked-by: Nuno Sá --- drivers/iio/dac/ad5770r.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/drivers/iio/dac/ad5770r.c b/drivers/iio/dac/ad5770r.c index 7e2fd32e993a..f66d67402e43 100644 --- a/drivers/iio/dac/ad5770r.c +++ b/drivers/iio/dac/ad5770r.c @@ -140,7 +140,7 @@ struct ad5770r_state { bool ch_pwr_down[AD5770R_MAX_CHANNELS]; bool internal_ref; bool external_res; - u8 transf_buf[2] ____cacheline_aligned; + u8 transf_buf[2] __aligned(IIO_DMA_MINALIGN); }; static const struct regmap_config ad5770r_spi_regmap_config = {