From patchwork Sun May 8 17:57:02 2022 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 8bit X-Patchwork-Submitter: Jonathan Cameron X-Patchwork-Id: 12842592 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 4B232C433EF for ; Sun, 8 May 2022 19:13:31 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S231193AbiEHTRP (ORCPT ); Sun, 8 May 2022 15:17:15 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:41010 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S238992AbiEHSDS (ORCPT ); Sun, 8 May 2022 14:03:18 -0400 Received: from dfw.source.kernel.org (dfw.source.kernel.org [139.178.84.217]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 78BAF5F55 for ; Sun, 8 May 2022 10:59:27 -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 091E76128D for ; Sun, 8 May 2022 17:59:27 +0000 (UTC) Received: by smtp.kernel.org (Postfix) with ESMTPSA id 4FEEDC385AC; Sun, 8 May 2022 17:59:19 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=k20201202; t=1652032766; bh=LYa598G5U5prwGW1bM4RI8pvwMVs1JaDWX3xf8pincM=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=OOSCkx49PB620Pe+EXcK90xr+9T0RCOGrCDl4l+FG3ROQ4qQBKc273ox5kvlHGj7o fcBXGSuqp3Q5AmOI8bh+6U6VIlGiYkesGq+iGm7s+80R83L1z9BCUzqTVTdXIAjoyo 4U4OwbnxwE2HbeYOBFIZS78ER/HxL2XB79MT+p7qxl9FW8vUdouiQQcfQ+EOXeEcq0 5nOuSnj/B/AYlVjj8buwS31lrky0o6+Fc5IkMI7o70EQMEJFbf9bNYE0YP4aGW+0Hy zENCq+FnwBxYXgVWqTn/nclSO9a2XRfiOXU65CtcL7XgXVV4km+vml9+/9JoGTeHBy t9yfQx6wGPnKA== 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 82/92] iio: potentiometer: max5481: Fix alignment for DMA safety Date: Sun, 8 May 2022 18:57:02 +0100 Message-Id: <20220508175712.647246-83-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: df1fd2de118e ("iio: max5481: Add support for Maxim digital potentiometers") Signed-off-by: Jonathan Cameron Acked-by: Nuno Sá --- drivers/iio/potentiometer/max5481.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/drivers/iio/potentiometer/max5481.c b/drivers/iio/potentiometer/max5481.c index 098d144a8fdd..b40e5ac218d7 100644 --- a/drivers/iio/potentiometer/max5481.c +++ b/drivers/iio/potentiometer/max5481.c @@ -44,7 +44,7 @@ static const struct max5481_cfg max5481_cfg[] = { struct max5481_data { struct spi_device *spi; const struct max5481_cfg *cfg; - u8 msg[3] ____cacheline_aligned; + u8 msg[3] __aligned(IIO_DMA_MINALIGN); }; #define MAX5481_CHANNEL { \