From patchwork Sun May 8 17:56:35 2022 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 8bit X-Patchwork-Submitter: Jonathan Cameron X-Patchwork-Id: 12842676 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 CA6A3C4707A for ; Sun, 8 May 2022 19:17:30 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S231723AbiEHTTM (ORCPT ); Sun, 8 May 2022 15:19:12 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:39982 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S235242AbiEHR7u (ORCPT ); Sun, 8 May 2022 13:59:50 -0400 Received: from dfw.source.kernel.org (dfw.source.kernel.org [139.178.84.217]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 119A45F55 for ; Sun, 8 May 2022 10:55:59 -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 A148F61141 for ; Sun, 8 May 2022 17:55:58 +0000 (UTC) Received: by smtp.kernel.org (Postfix) with ESMTPSA id 9B1CDC385B0; Sun, 8 May 2022 17:55:50 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=k20201202; t=1652032558; bh=kMOzDsTaEoi8Pc2EdiEgGJ26gCLaJIs6ABbA1R1++YE=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=K2zGden/elfm3qKZ+bxXXi5/Lk+FE6llYNdY+b2/IFbXrz06M5znscWNBkX9mVcqQ zoSuHGisBRLXRWGbZPargRrTxlGMcKDAR0XVKAVJkB7LnUtg3Mh1g0ZdL7nmEANXLZ 6TiJIuNC1SHzJajtzZSlTOZvFfS3InbWWvTffXbxVcF/dR6140ssUynEnIB96Y6/hN HswkNj8psU0ssHQMdm2gdVDdBrL2zXXoHaMgspiqhDoIgzrX0gGa9e+jtTCsWK915K 9c5pr3C7SxTNEhBpoPMn+mdfJzEcjEazBMTBFgpCvU5n0NLFqEtRf9+umoLElTjnds ico1uqATSg37w== 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 55/92] iio: dac: ad5791: Fix alignment for DMA saftey Date: Sun, 8 May 2022 18:56:35 +0100 Message-Id: <20220508175712.647246-56-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: 791bb52a0cd2 ("iio:ad5791: Do not store transfer buffers on the stack") Signed-off-by: Jonathan Cameron Acked-by: Nuno Sá --- 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..ee7e89774d9d 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_DMA_MINALIGN); }; enum ad5791_supported_device_ids {