From patchwork Tue May 3 08:59:03 2022 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Jonathan Cameron X-Patchwork-Id: 12835359 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 871C8C433EF for ; Tue, 3 May 2022 09:01:13 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S233104AbiECJEn (ORCPT ); Tue, 3 May 2022 05:04:43 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:43056 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S230514AbiECJEm (ORCPT ); Tue, 3 May 2022 05:04:42 -0400 Received: from dfw.source.kernel.org (dfw.source.kernel.org [139.178.84.217]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 91FE012AAD for ; Tue, 3 May 2022 02:01:11 -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 2F34A6126D for ; Tue, 3 May 2022 09:01:11 +0000 (UTC) Received: by smtp.kernel.org (Postfix) with ESMTPSA id 3CB33C385A4; Tue, 3 May 2022 09:01:02 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=k20201202; t=1651568470; bh=4I/dahFygrwDzrRUni0ggTB50Rl1eibjtsmXJ0NOILA=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=EiUH5FgF5YwFjF/i8MM6j9dIgcEqoXTIw+f0Hh8HuH5TOwqpQ6z7+idMGT84bsMj7 3k+ra6VbyDsIF8yI/DJBOWRh4ZvuWA6TCwNijzdZXYL5+MAzcZ0suNwHHNjpuQJHGG SpF0kCynuh+sHiKOYnm0AVzmWpfI5icTg2VSrd7UEwxtzl8mS06uLwQqS5uNM4iD0D hertwDl8ayz0GBw/U06yMuVv/YaYnYk2jO4/QmjnYaSKkuP5HBlLRB44V/HXMYngGp +6/Pp7sFAXYxa5Uv6oRQqKmodzK1ApchzMDqktH4wAczM8KkA+raOnEgo/8hBGaA4Q ZMnlXM0rUOBPA== From: Jonathan Cameron To: linux-iio@vger.kernel.org Cc: Akinobu Mita , Alexandru Lazar , Alexandru Tachici , Antoniu Miclaus , Charles-Antoine Couret , Cosmin Tanislav , Cristian Pop , David Lechner , Ivan Mikhaylov , Jacopo Mondi , Jean-Baptiste Maneyrol , Lars-Peter Clausen , Marcelo Schmitt , =?utf-8?q?M=C3=A5rten_Lindahl?= , 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 60/92] iio: dac: mcp3922: Fix alignment for DMA safety Date: Tue, 3 May 2022 09:59:03 +0100 Message-Id: <20220503085935.1533814-61-jic23@kernel.org> X-Mailer: git-send-email 2.36.0 In-Reply-To: <20220503085935.1533814-1-jic23@kernel.org> References: <20220503085935.1533814-1-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_ALIGN definition. Fixes: 1b791fadf3a1 ("iio: dac: mcp4902/mcp4912/mcp4922 dac driver") Signed-off-by: Jonathan Cameron Cc: Michael Welling --- drivers/iio/dac/mcp4922.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/drivers/iio/dac/mcp4922.c b/drivers/iio/dac/mcp4922.c index cb9e60e71b91..5252cc93f693 100644 --- a/drivers/iio/dac/mcp4922.c +++ b/drivers/iio/dac/mcp4922.c @@ -29,7 +29,7 @@ struct mcp4922_state { unsigned int value[MCP4922_NUM_CHANNELS]; unsigned int vref_mv; struct regulator *vref_reg; - u8 mosi[2] ____cacheline_aligned; + u8 mosi[2] __aligned(IIO_ALIGN); }; #define MCP4922_CHAN(chan, bits) { \