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 X-Spam-Level: X-Spam-Status: No, score=-16.6 required=3.0 tests=BAYES_00,DKIM_INVALID, DKIM_SIGNED,HEADER_FROM_DIFFERENT_DOMAINS,INCLUDES_CR_TRAILER,INCLUDES_PATCH, MAILING_LIST_MULTI,SPF_HELO_NONE,SPF_PASS,USER_AGENT_GIT autolearn=unavailable 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 178B9C636C7 for ; Thu, 15 Jul 2021 17:16:46 +0000 (UTC) Received: from smtp1.osuosl.org (smtp1.osuosl.org [140.211.166.138]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by mail.kernel.org (Postfix) with ESMTPS id D78F7613C7 for ; Thu, 15 Jul 2021 17:16:45 +0000 (UTC) DMARC-Filter: OpenDMARC Filter v1.3.2 mail.kernel.org D78F7613C7 Authentication-Results: mail.kernel.org; dmarc=fail (p=none dis=none) header.from=deltatee.com Authentication-Results: mail.kernel.org; spf=pass smtp.mailfrom=iommu-bounces@lists.linux-foundation.org Received: from localhost (localhost [127.0.0.1]) by smtp1.osuosl.org (Postfix) with ESMTP id B6B9A83F19; Thu, 15 Jul 2021 17:16:45 +0000 (UTC) X-Virus-Scanned: amavisd-new at osuosl.org Received: from smtp1.osuosl.org ([127.0.0.1]) by localhost (smtp1.osuosl.org [127.0.0.1]) (amavisd-new, port 10024) with ESMTP id Qvg1xeP0ig4b; Thu, 15 Jul 2021 17:16:44 +0000 (UTC) Received: from lists.linuxfoundation.org (lf-lists.osuosl.org [140.211.9.56]) by smtp1.osuosl.org (Postfix) with ESMTPS id 882C783FC8; Thu, 15 Jul 2021 17:16:44 +0000 (UTC) Received: from lf-lists.osuosl.org (localhost [127.0.0.1]) by lists.linuxfoundation.org (Postfix) with ESMTP id 62695C001A; Thu, 15 Jul 2021 17:16:44 +0000 (UTC) Received: from smtp2.osuosl.org (smtp2.osuosl.org [IPv6:2605:bc80:3010::133]) by lists.linuxfoundation.org (Postfix) with ESMTP id AD782C000E for ; Thu, 15 Jul 2021 17:16:42 +0000 (UTC) Received: from localhost (localhost [127.0.0.1]) by smtp2.osuosl.org (Postfix) with ESMTP id 9C86840E84 for ; Thu, 15 Jul 2021 17:16:42 +0000 (UTC) X-Virus-Scanned: amavisd-new at osuosl.org Authentication-Results: smtp2.osuosl.org (amavisd-new); dkim=pass (2048-bit key) header.d=deltatee.com Received: from smtp2.osuosl.org ([127.0.0.1]) by localhost (smtp2.osuosl.org [127.0.0.1]) (amavisd-new, port 10024) with ESMTP id YiBPegy0vcTd for ; Thu, 15 Jul 2021 17:16:42 +0000 (UTC) X-Greylist: from auto-whitelisted by SQLgrey-1.8.0 Received: from ale.deltatee.com (ale.deltatee.com [204.191.154.188]) by smtp2.osuosl.org (Postfix) with ESMTPS id F14B740E79 for ; Thu, 15 Jul 2021 17:16:41 +0000 (UTC) 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=tVzBPY6/Bgdpsr8bmfZpwFmQV8rVEWLD9Ju+AXRRB/Q=; b=sT6nIphYRpQg2LPmIHPAN9+aTu GJh+kG/x4SM7ujeEOwTJw5ilEgyuKzytEd4BRwwLa0nLKahIc7+GQ9qJ4fA5Hu9384ZtjsbuG2b92 s51DHr3LmCxuscjDOqlyMZ7uwWmozJZCa9HkoIp885CAsrDYo/QLqd7pHbw54nqIDcuExXUrrVRfw hZPArbok7AiyAtDvc1e+GRkLRV8zgo/jTjvTVyD1VZI/lSLxAe/izWpR6ucAyWORMvAeNpU6T2dEP ToPwTmhEJvkkerb0Tb9hn7uJF1hapwuF3GeNQtxgW4wYN95t0lZGeB9IRWqetmlEjHzeTZ71Uml4S 1lVZm5YQ==; 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 1m44V1-0001yg-Li; Thu, 15 Jul 2021 10:46:12 -0600 Received: from gunthorp by cgy1-donard.priv.deltatee.com with local (Exim 4.92) (envelope-from ) id 1m44Uo-0001nN-8x; Thu, 15 Jul 2021 10:45:58 -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 Date: Thu, 15 Jul 2021 10:45:34 -0600 Message-Id: <20210715164544.6827-7-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, linux@armlinux.org.uk, tsbogend@alpha.franken.de X-SA-Exim-Mail-From: gunthorp@deltatee.com Subject: [PATCH v1 06/16] ARM/dma-mapping: return error code from .map_sg() ops 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) Cc: Thomas Bogendoerfer , Robin Murphy , Martin Oliveira , Stephen Bates , Russell King , Logan Gunthorpe , Christoph Hellwig X-BeenThere: iommu@lists.linux-foundation.org X-Mailman-Version: 2.1.15 Precedence: list List-Id: Development issues for Linux IOMMU support List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit Errors-To: iommu-bounces@lists.linux-foundation.org Sender: "iommu" From: Martin Oliveira The .map_sg() op now expects an error code instead of zero on failure, so propagate any errors that may happen all the way up. Signed-off-by: Martin Oliveira Signed-off-by: Logan Gunthorpe Cc: Russell King Cc: Thomas Bogendoerfer --- arch/arm/mm/dma-mapping.c | 22 +++++++++++++--------- 1 file changed, 13 insertions(+), 9 deletions(-) diff --git a/arch/arm/mm/dma-mapping.c b/arch/arm/mm/dma-mapping.c index c4b8df2ad328..8c286e690756 100644 --- a/arch/arm/mm/dma-mapping.c +++ b/arch/arm/mm/dma-mapping.c @@ -980,7 +980,7 @@ int arm_dma_map_sg(struct device *dev, struct scatterlist *sg, int nents, { const struct dma_map_ops *ops = get_dma_ops(dev); struct scatterlist *s; - int i, j; + int i, j, ret; for_each_sg(sg, s, nents, i) { #ifdef CONFIG_NEED_SG_DMA_LENGTH @@ -988,7 +988,8 @@ int arm_dma_map_sg(struct device *dev, struct scatterlist *sg, int nents, #endif s->dma_address = ops->map_page(dev, sg_page(s), s->offset, s->length, dir, attrs); - if (dma_mapping_error(dev, s->dma_address)) + ret = dma_mapping_error(dev, s->dma_address); + if (ret) goto bad_mapping; } return nents; @@ -996,7 +997,7 @@ int arm_dma_map_sg(struct device *dev, struct scatterlist *sg, int nents, bad_mapping: for_each_sg(sg, s, i, j) ops->unmap_page(dev, sg_dma_address(s), sg_dma_len(s), dir, attrs); - return 0; + return ret; } /** @@ -1622,7 +1623,7 @@ static int __iommu_map_sg(struct device *dev, struct scatterlist *sg, int nents, bool is_coherent) { struct scatterlist *s = sg, *dma = sg, *start = sg; - int i, count = 0; + int i, count = 0, ret; unsigned int offset = s->offset; unsigned int size = s->offset + s->length; unsigned int max = dma_get_max_seg_size(dev); @@ -1634,8 +1635,10 @@ static int __iommu_map_sg(struct device *dev, struct scatterlist *sg, int nents, s->dma_length = 0; if (s->offset || (size & ~PAGE_MASK) || size + s->length > max) { - if (__map_sg_chunk(dev, start, size, &dma->dma_address, - dir, attrs, is_coherent) < 0) + ret = __map_sg_chunk(dev, start, size, + &dma->dma_address, dir, attrs, + is_coherent); + if (ret < 0) goto bad_mapping; dma->dma_address += offset; @@ -1648,8 +1651,9 @@ static int __iommu_map_sg(struct device *dev, struct scatterlist *sg, int nents, } size += s->length; } - if (__map_sg_chunk(dev, start, size, &dma->dma_address, dir, attrs, - is_coherent) < 0) + ret = __map_sg_chunk(dev, start, size, &dma->dma_address, dir, attrs, + is_coherent); + if (ret < 0) goto bad_mapping; dma->dma_address += offset; @@ -1660,7 +1664,7 @@ static int __iommu_map_sg(struct device *dev, struct scatterlist *sg, int nents, bad_mapping: for_each_sg(sg, s, count, i) __iommu_remove_mapping(dev, sg_dma_address(s), sg_dma_len(s)); - return 0; + return ret; } /** -- 2.20.1 _______________________________________________ iommu mailing list iommu@lists.linux-foundation.org https://lists.linuxfoundation.org/mailman/listinfo/iommu