From patchwork Sun May 8 17:56:42 2022 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 8bit X-Patchwork-Submitter: Jonathan Cameron X-Patchwork-Id: 12842574 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 13E93C433FE for ; Sun, 8 May 2022 19:12:46 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S229558AbiEHTQd (ORCPT ); Sun, 8 May 2022 15:16:33 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:40290 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S236672AbiEHSAn (ORCPT ); Sun, 8 May 2022 14:00:43 -0400 Received: from dfw.source.kernel.org (dfw.source.kernel.org [IPv6:2604:1380:4641:c500::1]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 7C9B3558C for ; Sun, 8 May 2022 10:56:52 -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 dfw.source.kernel.org (Postfix) with ESMTPS id 04B2761290 for ; Sun, 8 May 2022 17:56:52 +0000 (UTC) Received: by smtp.kernel.org (Postfix) with ESMTPSA id 2E864C385AF; Sun, 8 May 2022 17:56:43 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=k20201202; t=1652032611; bh=gq68eaUg1qm6JiXvMR1huO7uG88B8yjRF+TzaXVUxfA=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=ldJupQALJYIkMerJNUOna9Xl3aQeQdKa6SwTc5ir+9/Gj/mN28KjlMtg4nlkoi5Z7 +IkBYV8SchlPV+11LE9ZDwpcwywGRk6zKsX0MnmoWnoP4HSinIvA1FG6fUxTeTChPV bH+HezXjO7LgkzMABc0+Jw8sPdqlqc/qgrmxbGh3PwH/wC8Bji/m/oup068ESzy0Bu NtKhIbTEkF5dQ5LPO058QgrV7AbfHGclfhiLhC9Aa3KElg613mO2efgcLAqDlJsEW7 m84VgDoKae74f9/QVzrL9Hty8Y7ZrBeRmchE0jdd12tw7194EXoqbwM29vnfCm3AZg SYc+p7SzF7f3g== 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 62/92] iio: dac: ti-dac5571: Fix alignment for DMA safety Date: Sun, 8 May 2022 18:56:42 +0100 Message-Id: <20220508175712.647246-63-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: df38a4a72a3b ("iio: dac: add TI DAC5571 family support") Signed-off-by: Jonathan Cameron Cc: Sean Nyekjaer Acked-by: Nuno Sá --- drivers/iio/dac/ti-dac5571.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/drivers/iio/dac/ti-dac5571.c b/drivers/iio/dac/ti-dac5571.c index 0b775f943db3..ba68ea1e3455 100644 --- a/drivers/iio/dac/ti-dac5571.c +++ b/drivers/iio/dac/ti-dac5571.c @@ -52,7 +52,7 @@ struct dac5571_data { struct dac5571_spec const *spec; int (*dac5571_cmd)(struct dac5571_data *data, int channel, u16 val); int (*dac5571_pwrdwn)(struct dac5571_data *data, int channel, u8 pwrdwn); - u8 buf[3] ____cacheline_aligned; + u8 buf[3] __aligned(IIO_DMA_MINALIGN); }; #define DAC5571_POWERDOWN(mode) ((mode) + 1)