From patchwork Sun May 8 17:56:41 2022 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 8bit X-Patchwork-Submitter: Jonathan Cameron X-Patchwork-Id: 12842609 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 595B3C433F5 for ; Sun, 8 May 2022 19:14:28 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S231430AbiEHTSQ (ORCPT ); Sun, 8 May 2022 15:18:16 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:40256 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S242124AbiEHSAf (ORCPT ); Sun, 8 May 2022 14:00:35 -0400 Received: from dfw.source.kernel.org (dfw.source.kernel.org [139.178.84.217]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id B43A2558C for ; Sun, 8 May 2022 10:56:44 -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 4F83461141 for ; Sun, 8 May 2022 17:56:44 +0000 (UTC) Received: by smtp.kernel.org (Postfix) with ESMTPSA id 63EB2C385AC; Sun, 8 May 2022 17:56:36 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=k20201202; t=1652032603; bh=bbWYzQzWn6yDoFoUxbFaMDqNTNYDnzeNnfPYg6iRcaE=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=KBgIZnnMSAiDUDRVu0kTs6WACofJQHjjFHuF01jqcqEV7zv3BA4PHSqjppLbWHGUo mcA64zCf3NWunn/DYaEBXYqbgFwWGnh+OLMgVEM7VXYMfuzYslGsTS6QvWrLUjUecb QZy4TAoEmiFuUYbhya75gcZB4xdFq4jttPv3vyi4Obc649FnvHRAw3PGnRLI5oJrYU iIOiGJUeL0CZuW11hSQfmqPVdydbnRWGO0Fm4XSbXqyxnymlUDy1twQCSBfbdxGJKp 6lJQfvD1hfhHXRzR72Jzrh33nnpge9qMaXHIyLrHJ+vMndTxnNvq5yVhVlHMmhzYPx 0QuaJe2RTSZZA== 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 61/92] iio: dac: ti-dac082s085: Fix alignment for DMA safety Date: Sun, 8 May 2022 18:56:41 +0100 Message-Id: <20220508175712.647246-62-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: 61011264c1af ("iio: dac: Add Texas Instruments 8/10/12-bit 2/4-channel DAC driver") Signed-off-by: Jonathan Cameron Acked-by: Nuno Sá --- drivers/iio/dac/ti-dac082s085.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/drivers/iio/dac/ti-dac082s085.c b/drivers/iio/dac/ti-dac082s085.c index 4e1156e6deb2..f52ad8fa7747 100644 --- a/drivers/iio/dac/ti-dac082s085.c +++ b/drivers/iio/dac/ti-dac082s085.c @@ -55,7 +55,7 @@ struct ti_dac_chip { bool powerdown; u8 powerdown_mode; u8 resolution; - u8 buf[2] ____cacheline_aligned; + u8 buf[2] __aligned(IIO_DMA_MINALIGN); }; #define WRITE_NOT_UPDATE(chan) (0x00 | (chan) << 6)