From nobody Tue Feb 10 02:49:34 2026 Delivered-To: importer@patchew.org Received-SPF: pass (zohomail.com: domain of lists.xenproject.org designates 192.237.175.120 as permitted sender) client-ip=192.237.175.120; envelope-from=xen-devel-bounces@lists.xenproject.org; helo=lists.xenproject.org; Authentication-Results: mx.zohomail.com; dkim=pass; spf=pass (zohomail.com: domain of lists.xenproject.org designates 192.237.175.120 as permitted sender) smtp.mailfrom=xen-devel-bounces@lists.xenproject.org; dmarc=pass(p=none dis=none) header.from=deltatee.com ARC-Seal: i=1; a=rsa-sha256; t=1627589804; cv=none; d=zohomail.com; s=zohoarc; b=NizVXs0X4HdV5xRLwWn7aSxjuWxORSej41ZZjxBNZDWf7y8gybM7Dw/jtXj9js0veIMRnr2DHNswxgiuu747AfaE8d1kk8Ey7BWXihkLsnMZVm5dBiebT4elYaCxqMKOSXI8nWbwZMftkeBHw4Vw8r9140FOdYQQPJtArLmYtKc= ARC-Message-Signature: i=1; a=rsa-sha256; c=relaxed/relaxed; d=zohomail.com; s=zohoarc; t=1627589804; h=Content-Transfer-Encoding:Cc:Date:From:In-Reply-To:List-Subscribe:List-Post:List-Id:List-Help:List-Unsubscribe:MIME-Version:Message-ID:References:Sender:Subject:To; bh=6y6u7mqV1FaPPB3FCU6tc5JcXwZSIOmHMoiIHkmUZvc=; b=JWWtai0IW2kuMT5CdV0K5I7VBNaajPUJwKxMZyHAZsh1UVc/eXfqJXtmkdZ5zG6qur/gQjeij4biSYAdSuPs5TMIWUc8JoGlTjSbJoEi+Os1lR+sJtDe04hUjr0s0ah5dpN5ccTWmClq2Ts10HJbaU5DT+anMVbNjD+L7xNDMkw= ARC-Authentication-Results: i=1; mx.zohomail.com; dkim=pass; spf=pass (zohomail.com: domain of lists.xenproject.org designates 192.237.175.120 as permitted sender) smtp.mailfrom=xen-devel-bounces@lists.xenproject.org; dmarc=pass header.from= (p=none dis=none) Return-Path: Received: from lists.xenproject.org (lists.xenproject.org [192.237.175.120]) by mx.zohomail.com with SMTPS id 16275898048421023.0313324862868; Thu, 29 Jul 2021 13:16:44 -0700 (PDT) Received: from list by lists.xenproject.org with outflank-mailman.162064.297451 (Exim 4.92) (envelope-from ) id 1m9CSF-0003Z7-3r; Thu, 29 Jul 2021 20:16:31 +0000 Received: by outflank-mailman (output) from mailman id 162064.297451; Thu, 29 Jul 2021 20:16:31 +0000 Received: from localhost ([127.0.0.1] helo=lists.xenproject.org) by lists.xenproject.org with esmtp (Exim 4.92) (envelope-from ) id 1m9CSE-0003Yi-Uh; Thu, 29 Jul 2021 20:16:30 +0000 Received: by outflank-mailman (input) for mailman id 162064; Thu, 29 Jul 2021 20:16:30 +0000 Received: from us1-rack-iad1.inumbo.com ([172.99.69.81]) by lists.xenproject.org with esmtp (Exim 4.92) (envelope-from ) id 1m9CSE-0005pZ-57 for xen-devel@lists.xenproject.org; Thu, 29 Jul 2021 20:16:30 +0000 Received: from ale.deltatee.com (unknown [204.191.154.188]) by us1-rack-iad1.inumbo.com (Halon) with ESMTPS id 74a2c327-19c4-4728-a474-9ce532552b34; Thu, 29 Jul 2021 20:15:58 +0000 (UTC) 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 1m9CRe-0008VN-G4; Thu, 29 Jul 2021 14:15:55 -0600 Received: from gunthorp by cgy1-donard.priv.deltatee.com with local (Exim 4.92) (envelope-from ) id 1m9CRV-0001U5-El; Thu, 29 Jul 2021 14:15:45 -0600 X-Outflank-Mailman: Message body and most headers restored to incoming version X-BeenThere: xen-devel@lists.xenproject.org List-Id: Xen developer discussion List-Unsubscribe: , List-Post: List-Help: List-Subscribe: , Errors-To: xen-devel-bounces@lists.xenproject.org Precedence: list Sender: "Xen-devel" X-Inumbo-ID: 74a2c327-19c4-4728-a474-9ce532552b34 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=6y6u7mqV1FaPPB3FCU6tc5JcXwZSIOmHMoiIHkmUZvc=; b=e4d60/OLYdyc6xXPUN9l5vbTgC 5kYPrlDotb8/CzFuWOeAmYTUwjYP2ETS2BEJBZnaRrMkl6QE2YK+Z0X4WLU3XVyZjIQPJd4KPKLVX 9z1RalZ7Rj3cm60xKdgm4DrLx9xVrQ5x6SIIDJnoY84I41lD3GvvjW8lGYIEkc8MCPIMSdYmjHOsX G+3Dz3xqoaTHQ5lz6bICLu3UcD8WnMIwPrNA4AdT/XXsUGvw+HnZk86aH6Qn5dG1mndxUertWJyzN 1LaZJlW3gZ4l+iarh3qgXxqLmb6x2oqs+HVl63DPEgPGRsfIKlztFQlxYovSPreen45BHo7q/NT+l G12R1I2g==; 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 , "David S. Miller" , Niklas Schnelle , Michael Ellerman Date: Thu, 29 Jul 2021 14:15:32 -0600 Message-Id: <20210729201539.5602-15-logang@deltatee.com> X-Mailer: git-send-email 2.20.1 In-Reply-To: <20210729201539.5602-1-logang@deltatee.com> References: <20210729201539.5602-1-logang@deltatee.com> MIME-Version: 1.0 Content-Transfer-Encoding: quoted-printable 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, davem@davemloft.net, schnelle@linux.ibm.com, mpe@ellerman.id.au X-SA-Exim-Mail-From: gunthorp@deltatee.com X-Spam-Checker-Version: SpamAssassin 3.4.2 (2018-09-13) on ale.deltatee.com X-Spam-Level: X-Spam-Status: No, score=-6.7 required=5.0 tests=ALL_TRUSTED,BAYES_00, MYRULES_NO_TEXT autolearn=no autolearn_force=no version=3.4.2 Subject: [PATCH v3 14/21] sparc/iommu: return error codes 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) X-ZohoMail-DKIM: pass (identity @deltatee.com) X-ZM-MESSAGEID: 1627589805747100003 Content-Type: text/plain; charset="utf-8" From: Martin Oliveira The .map_sg() op now expects an error code instead of zero on failure. Returning an errno from __sbus_iommu_map_sg() results in sbus_iommu_map_sg_gflush() and sbus_iommu_map_sg_pflush() returning an errno, as those functions are wrappers around __sbus_iommu_map_sg(). Signed-off-by: Martin Oliveira Signed-off-by: Logan Gunthorpe Cc: "David S. Miller" Cc: Niklas Schnelle Cc: Michael Ellerman --- arch/sparc/kernel/iommu.c | 4 ++-- arch/sparc/kernel/pci_sun4v.c | 4 ++-- arch/sparc/mm/iommu.c | 2 +- 3 files changed, 5 insertions(+), 5 deletions(-) diff --git a/arch/sparc/kernel/iommu.c b/arch/sparc/kernel/iommu.c index a034f571d869..0589acd34201 100644 --- a/arch/sparc/kernel/iommu.c +++ b/arch/sparc/kernel/iommu.c @@ -448,7 +448,7 @@ static int dma_4u_map_sg(struct device *dev, struct sca= tterlist *sglist, iommu =3D dev->archdata.iommu; strbuf =3D dev->archdata.stc; if (nelems =3D=3D 0 || !iommu) - return 0; + return -EINVAL; =20 spin_lock_irqsave(&iommu->lock, flags); =20 @@ -580,7 +580,7 @@ static int dma_4u_map_sg(struct device *dev, struct sca= tterlist *sglist, } spin_unlock_irqrestore(&iommu->lock, flags); =20 - return 0; + return -EINVAL; } =20 /* If contexts are being used, they are the same in all of the mappings diff --git a/arch/sparc/kernel/pci_sun4v.c b/arch/sparc/kernel/pci_sun4v.c index 9de57e88f7a1..d90e80fa5705 100644 --- a/arch/sparc/kernel/pci_sun4v.c +++ b/arch/sparc/kernel/pci_sun4v.c @@ -486,7 +486,7 @@ static int dma_4v_map_sg(struct device *dev, struct sca= tterlist *sglist, =20 iommu =3D dev->archdata.iommu; if (nelems =3D=3D 0 || !iommu) - return 0; + return -EINVAL; atu =3D iommu->atu; =20 prot =3D HV_PCI_MAP_ATTR_READ; @@ -619,7 +619,7 @@ static int dma_4v_map_sg(struct device *dev, struct sca= tterlist *sglist, } local_irq_restore(flags); =20 - return 0; + return -EINVAL; } =20 static void dma_4v_unmap_sg(struct device *dev, struct scatterlist *sglist, diff --git a/arch/sparc/mm/iommu.c b/arch/sparc/mm/iommu.c index 0c0342e5b10d..9e3f6933ca13 100644 --- a/arch/sparc/mm/iommu.c +++ b/arch/sparc/mm/iommu.c @@ -256,7 +256,7 @@ static int __sbus_iommu_map_sg(struct device *dev, stru= ct scatterlist *sgl, sg->dma_address =3D__sbus_iommu_map_page(dev, sg_page(sg), sg->offset, sg->length, per_page_flush); if (sg->dma_address =3D=3D DMA_MAPPING_ERROR) - return 0; + return -EIO; sg->dma_length =3D sg->length; } =20 --=20 2.20.1