From patchwork Tue May 3 08:58:58 2022 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Jonathan Cameron X-Patchwork-Id: 12835354 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 764A0C433EF for ; Tue, 3 May 2022 09:00:33 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S233137AbiECJEC (ORCPT ); Tue, 3 May 2022 05:04:02 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:41560 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S233131AbiECJEA (ORCPT ); Tue, 3 May 2022 05:04:00 -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 74C1817E30 for ; Tue, 3 May 2022 02:00:27 -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 ams.source.kernel.org (Postfix) with ESMTPS id 6D195B81A96 for ; Tue, 3 May 2022 09:00:26 +0000 (UTC) Received: by smtp.kernel.org (Postfix) with ESMTPSA id 743BFC385BA; Tue, 3 May 2022 09:00:16 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=k20201202; t=1651568425; bh=5kgMdyqEel+TvcS07AhpBXrcoyxu/dyNHbl4s+HZ+hQ=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=IK5IBMTT0TcjT/4X44+U5Ap0lTD4PiUezk5f36gt3ZQT8xhsMznv7b6jN+bSbnGzp BuZ3pp4fwlyXBZeSd6mTDRWUPOhrUQOGHyetY7KUM391JS9WmWpQvprhF0YPcnaGvV 4U3JV3GdkTO8xzfqu3yZjfS+C+VtGaXoQe69c2E0FcsPiAJTQdL9SupolVtfizit9p 0eubSzLXQretwAQEDFAkI57omwsI1pUgY9o9orbQG2d7LNIoo4ge5+uIXXSt3PTybw RgAFuVSKHnYQJIRNDrbT0Cvv4twM+EAqdiaQrCWqxRTX+0r2VSNG3ZoVJ7NUC27TMd 8Epen0jvcIGKg== 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 55/92] iio: dac: ad5791: Fix alignment for DMA saftey Date: Tue, 3 May 2022 09:58:58 +0100 Message-Id: <20220503085935.1533814-56-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: 791bb52a0cd2 ("iio:ad5791: Do not store transfer buffers on the stack") Signed-off-by: Jonathan Cameron --- drivers/iio/dac/ad5791.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/drivers/iio/dac/ad5791.c b/drivers/iio/dac/ad5791.c index 2b14914b4050..b0fa7bca877b 100644 --- a/drivers/iio/dac/ad5791.c +++ b/drivers/iio/dac/ad5791.c @@ -95,7 +95,7 @@ struct ad5791_state { union { __be32 d32; u8 d8[4]; - } data[3] ____cacheline_aligned; + } data[3] __aligned(IIO_ALIGN); }; enum ad5791_supported_device_ids {