From patchwork Sun May 8 17:57:11 2022 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 8bit X-Patchwork-Submitter: Jonathan Cameron X-Patchwork-Id: 12842590 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 7E304C433FE for ; Sun, 8 May 2022 19:13:24 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S229519AbiEHTRK (ORCPT ); Sun, 8 May 2022 15:17:10 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:41380 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1344479AbiEHSE0 (ORCPT ); Sun, 8 May 2022 14:04:26 -0400 Received: from dfw.source.kernel.org (dfw.source.kernel.org [139.178.84.217]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id B2981DCE for ; Sun, 8 May 2022 11:00:34 -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 4D77D6127D for ; Sun, 8 May 2022 18:00:34 +0000 (UTC) Received: by smtp.kernel.org (Postfix) with ESMTPSA id 04768C385A4; Sun, 8 May 2022 18:00:26 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=k20201202; t=1652032833; bh=5GgVLlnDOpLOIf33otbfazdX3ISLz+9J8I/YHFGuDro=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=BpyjjCpDahs3yqMgSCMxFE8Oue+cX7oyLdvSXb5wlhVQo12gDKRo3wjpIcULsUI46 tipvPvGxstag0tTm3s8P0vqSxO4Vyb+th+21S5Wr8Fnlmuq1Ono3D8rjO0yY0agLlY ZKHXXe1nwTztk1wmqpWspU6YwWQvTMo5+9ApNIV4Vt1eMEzpKT9kKb09p4urJPWJfp HxFOoHpspPJcK0bRBWXFnyT2OiNgcfa05C55iDSTbKyEOmIN3gfShOIdwm5Z8So/E3 w/KGLn51+uB5u//K8vnUz5izaPV2q1P85c44Zr5y/kLcuVWYZYhnmYRT8hHUsYqQJR tGSj+qUNmymNw== 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 91/92] iio: temp: max31865: Fix alignment for DMA safety Date: Sun, 8 May 2022 18:57:11 +0100 Message-Id: <20220508175712.647246-92-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: e112dc4e18ea ("iio: temperature: Add MAX31865 RTD Support") Signed-off-by: Jonathan Cameron Cc: Navin Sankar Velliangiri Acked-by: Nuno Sá --- drivers/iio/temperature/max31865.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/drivers/iio/temperature/max31865.c b/drivers/iio/temperature/max31865.c index 86c3f3509a26..f0079e51d8d2 100644 --- a/drivers/iio/temperature/max31865.c +++ b/drivers/iio/temperature/max31865.c @@ -53,7 +53,7 @@ struct max31865_data { struct mutex lock; bool filter_50hz; bool three_wire; - u8 buf[2] ____cacheline_aligned; + u8 buf[2] __aligned(IIO_DMA_MINALIGN); }; static int max31865_read(struct max31865_data *data, u8 reg,