From mboxrd@z Thu Jan 1 00:00:00 1970 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 525BBC00140 for ; Mon, 15 Aug 2022 21:40:20 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1343753AbiHOVkS (ORCPT ); Mon, 15 Aug 2022 17:40:18 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:43378 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1348591AbiHOVgr (ORCPT ); Mon, 15 Aug 2022 17:36:47 -0400 Received: from dfw.source.kernel.org (dfw.source.kernel.org [139.178.84.217]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 0E8EB27B0C; Mon, 15 Aug 2022 12:26:35 -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 A00956102C; Mon, 15 Aug 2022 19:26:34 +0000 (UTC) Received: by smtp.kernel.org (Postfix) with ESMTPSA id 94014C433D6; Mon, 15 Aug 2022 19:26:33 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=linuxfoundation.org; s=korg; t=1660591594; bh=ubhr0oCw+NmXN4y20R4+URbD/0qmCOyALhGD+sLVmtA=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=fWg5g4J0Fn1ytFj7cCRCDRttyQBBm0GSfjGDcjhJ7UqQHjhshQt/zGmWvdNGhx+fI WD/qr1hsxWPpf4X+jgwk5bpu0iovv0VmyXFptUrO4c98GT7HibE5wSj526X0phrUjb Ie7EPe1uYhIf0VZ+cGA8FKGJHCxDO+Zx0PXCzqbU= From: Greg Kroah-Hartman To: linux-kernel@vger.kernel.org Cc: Greg Kroah-Hartman , stable@vger.kernel.org, Jonathan Cameron , Lars-Peter Clausen , =?UTF-8?q?Nuno=20S=C3=A1?= , Sasha Levin Subject: [PATCH 5.18 0631/1095] iio: dac: ad5504: Fix alignment for DMA safety Date: Mon, 15 Aug 2022 20:00:30 +0200 Message-Id: <20220815180455.541825828@linuxfoundation.org> X-Mailer: git-send-email 2.37.2 In-Reply-To: <20220815180429.240518113@linuxfoundation.org> References: <20220815180429.240518113@linuxfoundation.org> User-Agent: quilt/0.67 MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org From: Jonathan Cameron [ Upstream commit 00b9737caa5aaed5cf45a7c7498edf5957efa3b2 ] ____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: 0dbe59c7a788 ("iio:ad5504: Do not store transfer buffers on the stack") Signed-off-by: Jonathan Cameron Cc: Lars-Peter Clausen Acked-by: Nuno Sá Link: https://lore.kernel.org/r/20220508175712.647246-48-jic23@kernel.org Signed-off-by: Sasha Levin --- drivers/iio/dac/ad5504.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/drivers/iio/dac/ad5504.c b/drivers/iio/dac/ad5504.c index 8507573aa13e..e472c9564edf 100644 --- a/drivers/iio/dac/ad5504.c +++ b/drivers/iio/dac/ad5504.c @@ -54,7 +54,7 @@ struct ad5504_state { unsigned pwr_down_mask; unsigned pwr_down_mode; - __be16 data[2] ____cacheline_aligned; + __be16 data[2] __aligned(IIO_DMA_MINALIGN); }; /* -- 2.35.1