From patchwork Thu Jul 15 16:45:30 2021 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Logan Gunthorpe X-Patchwork-Id: 12380487 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-18.8 required=3.0 tests=BAYES_00,DKIM_SIGNED, DKIM_VALID,DKIM_VALID_AU,HEADER_FROM_DIFFERENT_DOMAINS,INCLUDES_CR_TRAILER, INCLUDES_PATCH,MAILING_LIST_MULTI,SPF_HELO_NONE,SPF_PASS,USER_AGENT_GIT autolearn=ham autolearn_force=no version=3.4.0 Received: from mail.kernel.org (mail.kernel.org [198.145.29.99]) by smtp.lore.kernel.org (Postfix) with ESMTP id 5AC1EC47E48 for ; Thu, 15 Jul 2021 16:46:14 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id 425A6613EB for ; Thu, 15 Jul 2021 16:46:14 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S233622AbhGOQtE (ORCPT ); Thu, 15 Jul 2021 12:49:04 -0400 Received: from ale.deltatee.com ([204.191.154.188]:49880 "EHLO ale.deltatee.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S232065AbhGOQtD (ORCPT ); Thu, 15 Jul 2021 12:49:03 -0400 DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=deltatee.com; s=20200525; h=Subject:MIME-Version:References:In-Reply-To: Message-Id:Date:Cc:To:From:content-disposition; bh=0So9SX+KFL5UGdS3JALTvYX2o53SL7VRdq+tjhsTXy0=; b=qqMKc5x7fyfRQyjp0HyOD1Z32b DzGFv9RbC3msHd0ahDXPw6wy/yg5LcJhCW0PDTt60LcgK0yaxWJRDYUVEm/BNElgrmC778Yy4Khxj aGJNkzEKcjYnH6edz8QuY+Tl8ve0CET9q0fadSAO5DDasNAoLugMijemySMaOpn9ulPDTRsV+Y6sH ukyJlT3fpoGKBhHlDl8EmUzR85XGF5eaXP1qG0RIxxvD17WUPvJycMMY1U/NB0pUxw6WhGIM2m2HT NoOWnt3ovvM0FRkgn+ygXT/NEfD/bqrFzfZTrmI0qK2wUhAUcbPNhILjW59tthQAwZmnqq++rIsqH kN3efVfw==; Received: from cgy1-donard.priv.deltatee.com ([172.16.1.31]) by ale.deltatee.com with esmtps (TLS1.3:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.92) (envelope-from ) id 1m44Ur-0001yd-1a; Thu, 15 Jul 2021 10:46:01 -0600 Received: from gunthorp by cgy1-donard.priv.deltatee.com with local (Exim 4.92) (envelope-from ) id 1m44Un-0001nB-Re; Thu, 15 Jul 2021 10:45:57 -0600 From: Logan Gunthorpe To: linux-kernel@vger.kernel.org, linux-alpha@vger.kernel.org, linux-arm-kernel@lists.infradead.org, linux-ia64@vger.kernel.org, linux-mips@vger.kernel.org, linuxppc-dev@lists.ozlabs.org, linux-s390@vger.kernel.org, sparclinux@vger.kernel.org, iommu@lists.linux-foundation.org, linux-parisc@vger.kernel.org, xen-devel@lists.xenproject.org Cc: Christoph Hellwig , Marek Szyprowski , Robin Murphy , Stephen Bates , Martin Oliveira , Logan Gunthorpe Date: Thu, 15 Jul 2021 10:45:30 -0600 Message-Id: <20210715164544.6827-3-logang@deltatee.com> X-Mailer: git-send-email 2.20.1 In-Reply-To: <20210715164544.6827-1-logang@deltatee.com> References: <20210715164544.6827-1-logang@deltatee.com> MIME-Version: 1.0 X-SA-Exim-Connect-IP: 172.16.1.31 X-SA-Exim-Rcpt-To: linux-arm-kernel@lists.infradead.org, linuxppc-dev@lists.ozlabs.org, iommu@lists.linux-foundation.org, linux-kernel@vger.kernel.org, linux-alpha@vger.kernel.org, linux-ia64@vger.kernel.org, linux-mips@vger.kernel.org, linux-s390@vger.kernel.org, sparclinux@vger.kernel.org, linux-parisc@vger.kernel.org, xen-devel@lists.xenproject.org, hch@lst.de, m.szyprowski@samsung.com, robin.murphy@arm.com, sbates@raithlin.com, martin.oliveira@eideticom.com, logang@deltatee.com X-SA-Exim-Mail-From: gunthorp@deltatee.com Subject: [PATCH v1 02/16] dma-direct: Return appropriate error code from dma_direct_map_sg() X-SA-Exim-Version: 4.2.1 (built Wed, 08 May 2019 21:11:16 +0000) X-SA-Exim-Scanned: Yes (on ale.deltatee.com) Precedence: bulk List-ID: X-Mailing-List: linux-parisc@vger.kernel.org Now that the map_sg() op expects error codes instead of return zero on error, convert dma_direct_map_sg() to return an error code. The only error to return presently is EINVAL if a page could not be mapped. Signed-off-by: Logan Gunthorpe --- kernel/dma/direct.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/kernel/dma/direct.c b/kernel/dma/direct.c index f737e3347059..803ee9321170 100644 --- a/kernel/dma/direct.c +++ b/kernel/dma/direct.c @@ -411,7 +411,7 @@ int dma_direct_map_sg(struct device *dev, struct scatterlist *sgl, int nents, out_unmap: dma_direct_unmap_sg(dev, sgl, i, dir, attrs | DMA_ATTR_SKIP_CPU_SYNC); - return 0; + return -EINVAL; } dma_addr_t dma_direct_map_resource(struct device *dev, phys_addr_t paddr,