From patchwork Tue Apr 7 18:37:18 2020 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Joerg Roedel X-Patchwork-Id: 11478757 Return-Path: Received: from mail.kernel.org (pdx-korg-mail-1.web.codeaurora.org [172.30.200.123]) by pdx-korg-patchwork-2.web.codeaurora.org (Postfix) with ESMTP id 6937B112C for ; Tue, 7 Apr 2020 18:39:40 +0000 (UTC) Received: from bombadil.infradead.org (bombadil.infradead.org [198.137.202.133]) (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 3CB1E206BE for ; Tue, 7 Apr 2020 18:39:40 +0000 (UTC) Authentication-Results: mail.kernel.org; dkim=pass (2048-bit key) header.d=lists.infradead.org header.i=@lists.infradead.org header.b="BNIdapC7" DMARC-Filter: OpenDMARC Filter v1.3.2 mail.kernel.org 3CB1E206BE Authentication-Results: mail.kernel.org; dmarc=fail (p=none dis=none) header.from=8bytes.org Authentication-Results: mail.kernel.org; spf=none smtp.mailfrom=linux-rockchip-bounces+patchwork-linux-rockchip=patchwork.kernel.org@lists.infradead.org DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=lists.infradead.org; s=bombadil.20170209; h=Sender: Content-Transfer-Encoding:Content-Type:MIME-Version:Cc:List-Subscribe: List-Help:List-Post:List-Archive:List-Unsubscribe:List-Id:References: In-Reply-To:Message-Id:Date:Subject:To:From:Reply-To:Content-ID: Content-Description:Resent-Date:Resent-From:Resent-Sender:Resent-To:Resent-Cc :Resent-Message-ID:List-Owner; bh=cd4s1xJNdZEh+lOlc92jFJyfHqOmullxlW09YJ+yOxs=; b=BNIdapC7Y7NOo+ZtoE1KEjmA8v zVDdrdkLsVyZGUBS0MqZOOjUvkivw74cTo9pWj6BH9q0fWsw1L/U8luN6toNoUStgDop2lU39vnpq TkcefEpE87yoJRO82jpqquXNd4irZ3P7zl9QHIl6m3sKfOzAEKGEPHAwjc7zYJltVOgpUWbFuBdSQ KFpXBPzKQNC7H0TeTmRE5z4VJUu+fqj4v2dgzhPB14QcEAOWWpC3FdzFPSYoP5iQSGfkKAPPhg8LM 4B0QxMP61N9bxDqTjJblGjEjQakF9SbfcV1ZXXLPsV3Akek/qF/APM+hIr1R0H1QQ5okx4GgD//3h 7ANgI4iw==; Received: from localhost ([127.0.0.1] helo=bombadil.infradead.org) by bombadil.infradead.org with esmtp (Exim 4.92.3 #3 (Red Hat Linux)) id 1jLt8J-0000F0-4L; Tue, 07 Apr 2020 18:39:35 +0000 Received: from 8bytes.org ([2a01:238:4383:600:38bc:a715:4b6d:a889] helo=theia.8bytes.org) by bombadil.infradead.org with esmtps (Exim 4.92.3 #3 (Red Hat Linux)) id 1jLt6q-0006j4-Lf; Tue, 07 Apr 2020 18:38:08 +0000 Received: by theia.8bytes.org (Postfix, from userid 1000) id 1EE9A329; Tue, 7 Apr 2020 20:37:50 +0200 (CEST) From: Joerg Roedel To: Joerg Roedel , Will Deacon , Robin Murphy , Marek Szyprowski , Kukjin Kim , Krzysztof Kozlowski , David Woodhouse , Lu Baolu , Andy Gross , Bjorn Andersson , Matthias Brugger , Rob Clark , Heiko Stuebner , Gerald Schaefer , Thierry Reding , Jonathan Hunter , Jean-Philippe Brucker Subject: [RFC PATCH 10/34] iommu: Move new probe_device path to separate function Date: Tue, 7 Apr 2020 20:37:18 +0200 Message-Id: <20200407183742.4344-11-joro@8bytes.org> X-Mailer: git-send-email 2.17.1 In-Reply-To: <20200407183742.4344-1-joro@8bytes.org> References: <20200407183742.4344-1-joro@8bytes.org> X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20200407_113805_013141_D77FE1B9 X-CRM114-Status: GOOD ( 16.17 ) X-Spam-Score: -0.0 (/) X-Spam-Report: SpamAssassin version 3.4.4 on bombadil.infradead.org summary: Content analysis details: (-0.0 points) pts rule name description ---- ---------------------- -------------------------------------------------- -0.0 SPF_PASS SPF: sender matches SPF record -0.0 SPF_HELO_PASS SPF: HELO matches SPF record X-BeenThere: linux-rockchip@lists.infradead.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: Upstream kernel work for Rockchip platforms List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Cc: linux-s390@vger.kernel.org, linux-samsung-soc@vger.kernel.org, linux-arm-msm@vger.kernel.org, linux-kernel@vger.kernel.org, virtualization@lists.linux-foundation.org, linux-rockchip@lists.infradead.org, iommu@lists.linux-foundation.org, Joerg Roedel , linux-mediatek@lists.infradead.org, linux-tegra@vger.kernel.org MIME-Version: 1.0 Sender: "Linux-rockchip" Errors-To: linux-rockchip-bounces+patchwork-linux-rockchip=patchwork.kernel.org@lists.infradead.org From: Joerg Roedel This makes it easier to remove to old code-path when all drivers are converted. As a side effect that it also fixes the error cleanup path. Signed-off-by: Joerg Roedel --- drivers/iommu/iommu.c | 69 ++++++++++++++++++++++++++++--------------- 1 file changed, 46 insertions(+), 23 deletions(-) diff --git a/drivers/iommu/iommu.c b/drivers/iommu/iommu.c index 18eb3623bd00..8be047a4808f 100644 --- a/drivers/iommu/iommu.c +++ b/drivers/iommu/iommu.c @@ -218,12 +218,55 @@ static int __iommu_probe_device(struct device *dev, struct list_head *group_list return ret; } +static int __iommu_probe_device_helper(struct device *dev) +{ + const struct iommu_ops *ops = dev->bus->iommu_ops; + struct iommu_group *group; + int ret; + + ret = __iommu_probe_device(dev, NULL); + if (ret) + goto err_out; + + /* + * Try to allocate a default domain - needs support from the + * IOMMU driver. There are still some drivers which don't + * support default domains, so the return value is not yet + * checked. + */ + iommu_alloc_default_domain(dev); + + group = iommu_group_get(dev); + if (!group) + goto err_release; + + if (group->default_domain) + ret = __iommu_attach_device(group->default_domain, dev); + + iommu_group_put(group); + + if (ret) + goto err_release; + + if (ops->probe_finalize) + ops->probe_finalize(dev); + + return 0; + +err_release: + iommu_release_device(dev); +err_out: + return ret; + +} + int iommu_probe_device(struct device *dev) { const struct iommu_ops *ops = dev->bus->iommu_ops; int ret; WARN_ON(dev->iommu_group); + if (!ops) return -EINVAL; @@ -235,30 +278,10 @@ int iommu_probe_device(struct device *dev) goto err_free_dev_param; } - if (ops->probe_device) { - struct iommu_group *group; - - ret = __iommu_probe_device(dev, NULL); - - /* - * Try to allocate a default domain - needs support from the - * IOMMU driver. There are still some drivers which don't - * support default domains, so the return value is not yet - * checked. - */ - if (!ret) - iommu_alloc_default_domain(dev); - - group = iommu_group_get(dev); - if (group && group->default_domain) { - ret = __iommu_attach_device(group->default_domain, dev); - iommu_group_put(group); - } - - } else { - ret = ops->add_device(dev); - } + if (ops->probe_device) + return __iommu_probe_device_helper(dev); + ret = ops->add_device(dev); if (ret) goto err_module_put;