From patchwork Sun May 8 17:56:52 2022 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 8bit X-Patchwork-Submitter: Jonathan Cameron X-Patchwork-Id: 12842596 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 675B3C433FE for ; Sun, 8 May 2022 19:13:40 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S230189AbiEHTRY (ORCPT ); Sun, 8 May 2022 15:17:24 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:40652 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S236179AbiEHSCB (ORCPT ); Sun, 8 May 2022 14:02:01 -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 D95A9558C for ; Sun, 8 May 2022 10:58:10 -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 90891B80E5B for ; Sun, 8 May 2022 17:58:09 +0000 (UTC) Received: by smtp.kernel.org (Postfix) with ESMTPSA id F1CECC385AC; Sun, 8 May 2022 17:58:00 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=k20201202; t=1652032688; bh=yChHrX483G+LQADaFJb57opYJaEYN58hgazLk8SkFqk=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=pWS3lf5TEstOnIKphH/F7CsYUCYxDN6r3uIQPgjhuzoqPeUOccbueHdTr874zuNBP KbH9mxoqa4f/TtGFJ2apVKwqAqAhd/CePYROMHKCSAFlA9zwwABiP6s+0wv+HLvvGX BCyx4wVG/V89gFIf+nzTV38QnVA6B0wDE5Bc64n+Nlnnym7dMiyKRRY29/BF56u8mG fjGyTKWkCrsRa/StQaHF3DOtKSiY+0I2cbW30kmyfy7FohEnbKiJHCBjtrbAnEjKbH lbIF60fr45w2x8aFmiS/5wdvZZlyiPjv4x9OrGW+ugzr1sKwjnfsBTYs/y1UqZ7c05 ubcosFJAnigcw== 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 72/92] iio: gyro: adis16080: Fix alignment for DMA safety Date: Sun, 8 May 2022 18:56:52 +0100 Message-Id: <20220508175712.647246-73-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 tag is inaccurate but unlikely anyone will backport this beyond that point so I haven't chased the history futher than 2013. Fixes: 3c80372dae17 ("staging:iio:adis16080: be16 cleanups") Signed-off-by: Jonathan Cameron Acked-by: Nuno Sá --- drivers/iio/gyro/adis16080.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/drivers/iio/gyro/adis16080.c b/drivers/iio/gyro/adis16080.c index acef59d822b1..14b3abf6dce9 100644 --- a/drivers/iio/gyro/adis16080.c +++ b/drivers/iio/gyro/adis16080.c @@ -45,7 +45,7 @@ struct adis16080_state { const struct adis16080_chip_info *info; struct mutex lock; - __be16 buf ____cacheline_aligned; + __be16 buf __aligned(IIO_DMA_MINALIGN); }; static int adis16080_read_sample(struct iio_dev *indio_dev,