From patchwork Sat Apr 1 09:15:29 2023 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Jiaxun Yang X-Patchwork-Id: 669538 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 D0833C77B6F for ; Sat, 1 Apr 2023 09:15:45 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S229441AbjDAJPo (ORCPT ); Sat, 1 Apr 2023 05:15:44 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:44128 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S229727AbjDAJPn (ORCPT ); Sat, 1 Apr 2023 05:15:43 -0400 Received: from out1-smtp.messagingengine.com (out1-smtp.messagingengine.com [66.111.4.25]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id C2FCE65BC; Sat, 1 Apr 2023 02:15:42 -0700 (PDT) Received: from compute2.internal (compute2.nyi.internal [10.202.2.46]) by mailout.nyi.internal (Postfix) with ESMTP id 3CDED5C0209; Sat, 1 Apr 2023 05:15:42 -0400 (EDT) Received: from mailfrontend1 ([10.202.2.162]) by compute2.internal (MEProxy); Sat, 01 Apr 2023 05:15:42 -0400 DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=flygoat.com; h= cc:cc:content-transfer-encoding:content-type:date:date:from:from :in-reply-to:in-reply-to:message-id:mime-version:references :reply-to:sender:subject:subject:to:to; s=fm3; t=1680340542; x= 1680426942; bh=6ZdUaz0bULSUdlfaxIi2pdkawZZOMF82ZopwMrFwfbc=; b=Z Yb64APEBRmQX6qnsbQ+gNGAqCe47A5ugfKPHsjoS0juWhirZbuCy5OqsbGVin0aQ MCprU8gXASeLV3u4fhQCB8Xmr6q9QR4w2HZJpdtlKTwu5UTiyxJEYkR+RtRyVRde UTwLtqN6qhUwO6xah+aI7dLJmA/yb8qsL05ZmqE47UppENL8RgKP+t5PLWHyEYgv sxhwSxbBQD+ye3z4TVmNgvmBGIE+aGU84qke6fbp70ckULSF34+i1MBOcxAd3u2K aob00h3PmgtGo76UIlwN0CqufBnhZt1E57/1uA+egkRWe6wX35P3VsqLKRW9J3oR P1NvJ1J8XM4zvQBVfbpog== DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d= messagingengine.com; h=cc:cc:content-transfer-encoding :content-type:date:date:feedback-id:feedback-id:from:from :in-reply-to:in-reply-to:message-id:mime-version:references :reply-to:sender:subject:subject:to:to:x-me-proxy:x-me-proxy :x-me-sender:x-me-sender:x-sasl-enc; s=fm2; t=1680340542; x= 1680426942; bh=6ZdUaz0bULSUdlfaxIi2pdkawZZOMF82ZopwMrFwfbc=; b=n 2+Sns5MlCMh2CS5VbD4r4+tfWPBNZW4RfSSeYLJQ1wxvtWZeI+w//zhC/SBMe2wN Ue5yAxnK70ImQ5HLFWx9k1/JZJ3vvGMKku6U7/6tioBsUC5cTtJekxHafJNmyZMh hUfkRF+AkKbFh00IiA8DUKvrLFElH8m8uZF2yJcPjkaUmm3LnOm40eWxKN6e7AKe 6MGiQItIbp/g9gx/F0//fNfDMvpcMLTWiAdmoCfZpKcNQGBEeeNXWetaW27oUc1G KardIf3w6xRRk8YcR5R5mVHjbM/0sHBYN3d2fSqnbAGZkeleeQp9xCv24tHbLrut ukVhLPN80yCeH5PYfwmtw== X-ME-Sender: X-ME-Received: X-ME-Proxy-Cause: gggruggvucftvghtrhhoucdtuddrgedvhedrvdeifedgudegucetufdoteggodetrfdotf fvucfrrhhofhhilhgvmecuhfgrshhtofgrihhlpdfqfgfvpdfurfetoffkrfgpnffqhgen uceurghilhhouhhtmecufedttdenucenucfjughrpefhvfevufffkffojghfggfgsedtke ertdertddtnecuhfhrohhmpeflihgrgihunhcujggrnhhguceojhhirgiguhhnrdihrghn ghesfhhlhihgohgrthdrtghomheqnecuggftrfgrthhtvghrnhepfeeludefheegvdeuvd dvgeekgfdvtdettdelieeihfegtedugeekhfdvhfejfedtnecuvehluhhsthgvrhfuihii vgeptdenucfrrghrrghmpehmrghilhhfrhhomhepjhhirgiguhhnrdihrghnghesfhhlhi hgohgrthdrtghomh X-ME-Proxy: Feedback-ID: ifd894703:Fastmail Received: by mail.messagingengine.com (Postfix) with ESMTPA; Sat, 1 Apr 2023 05:15:40 -0400 (EDT) From: Jiaxun Yang To: iommu@lists.linux.dev Cc: linux-mips@vger.kernel.org, linux-kernel@vger.kernel.org, linuxppc-dev@lists.ozlabs.org, tsbogend@alpha.franken.de, mpe@ellerman.id.au, paul.walmsley@sifive.com, palmer@dabbelt.com, robh+dt@kernel.org, hch@lst.de, m.szyprowski@samsung.com, robin.murphy@arm.com, linux-riscv@lists.infradead.org, devicetree@vger.kernel.org, Jiaxun Yang Subject: [PATCH v4 1/3] dma-mapping: Provide a fallback dma_default_coherent Date: Sat, 1 Apr 2023 10:15:29 +0100 Message-Id: <20230401091531.47412-2-jiaxun.yang@flygoat.com> X-Mailer: git-send-email 2.39.2 (Apple Git-143) In-Reply-To: <20230401091531.47412-1-jiaxun.yang@flygoat.com> References: <20230401091531.47412-1-jiaxun.yang@flygoat.com> MIME-Version: 1.0 Precedence: bulk List-ID: X-Mailing-List: devicetree@vger.kernel.org dma_default_coherent was decleared unconditionally at kernel/dma/mapping.c but only decleared when any of non-coherent options is enabled in dma-map-ops.h. Guard the declaration in mapping.c with non-coherent options and provide a fallback definition. Signed-off-by: Jiaxun Yang --- v3: Style fix --- include/linux/dma-map-ops.h | 2 ++ kernel/dma/mapping.c | 4 ++++ 2 files changed, 6 insertions(+) diff --git a/include/linux/dma-map-ops.h b/include/linux/dma-map-ops.h index 41bf4bdb117a..31f114f486c4 100644 --- a/include/linux/dma-map-ops.h +++ b/include/linux/dma-map-ops.h @@ -269,6 +269,8 @@ static inline bool dev_is_dma_coherent(struct device *dev) return dev->dma_coherent; } #else +#define dma_default_coherent true + static inline bool dev_is_dma_coherent(struct device *dev) { return true; diff --git a/kernel/dma/mapping.c b/kernel/dma/mapping.c index 68106e3791f6..80f9663ffe26 100644 --- a/kernel/dma/mapping.c +++ b/kernel/dma/mapping.c @@ -17,7 +17,11 @@ #include "debug.h" #include "direct.h" +#if defined(CONFIG_ARCH_HAS_SYNC_DMA_FOR_DEVICE) || \ + defined(CONFIG_ARCH_HAS_SYNC_DMA_FOR_CPU) || \ + defined(CONFIG_ARCH_HAS_SYNC_DMA_FOR_CPU_ALL) bool dma_default_coherent; +#endif /* * Managed DMA API