From patchwork Mon Nov 14 15:42:17 2016 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Kirti Wankhede X-Patchwork-Id: 9427855 Return-Path: Received: from mail.wl.linuxfoundation.org (pdx-wl-mail.web.codeaurora.org [172.30.200.125]) by pdx-korg-patchwork.web.codeaurora.org (Postfix) with ESMTP id 4F0F060471 for ; Mon, 14 Nov 2016 15:59:36 +0000 (UTC) Received: from mail.wl.linuxfoundation.org (localhost [127.0.0.1]) by mail.wl.linuxfoundation.org (Postfix) with ESMTP id 3B273286F3 for ; Mon, 14 Nov 2016 15:59:36 +0000 (UTC) Received: by mail.wl.linuxfoundation.org (Postfix, from userid 486) id 2FC8028752; Mon, 14 Nov 2016 15:59:36 +0000 (UTC) X-Spam-Checker-Version: SpamAssassin 3.3.1 (2010-03-16) on pdx-wl-mail.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-6.9 required=2.0 tests=BAYES_00,RCVD_IN_DNSWL_HI autolearn=ham version=3.3.1 Received: from lists.gnu.org (lists.gnu.org [208.118.235.17]) (using TLSv1 with cipher AES256-SHA (256/256 bits)) (No client certificate requested) by mail.wl.linuxfoundation.org (Postfix) with ESMTPS id B4CD0286F3 for ; Mon, 14 Nov 2016 15:59:35 +0000 (UTC) Received: from localhost ([::1]:41015 helo=lists.gnu.org) by lists.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1c6JfT-0000xY-34 for patchwork-qemu-devel@patchwork.kernel.org; Mon, 14 Nov 2016 10:59:35 -0500 Received: from eggs.gnu.org ([2001:4830:134:3::10]:34727) by lists.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1c6JO3-0002rD-EY for qemu-devel@nongnu.org; Mon, 14 Nov 2016 10:41:36 -0500 Received: from Debian-exim by eggs.gnu.org with spam-scanned (Exim 4.71) (envelope-from ) id 1c6JO2-0007XJ-D3 for qemu-devel@nongnu.org; Mon, 14 Nov 2016 10:41:35 -0500 Received: from hqemgate15.nvidia.com ([216.228.121.64]:16822) by eggs.gnu.org with esmtps (TLS1.0:DHE_RSA_AES_256_CBC_SHA1:32) (Exim 4.71) (envelope-from ) id 1c6JO2-0007WC-7P for qemu-devel@nongnu.org; Mon, 14 Nov 2016 10:41:34 -0500 Received: from hqnvupgp07.nvidia.com (Not Verified[216.228.121.13]) by hqemgate15.nvidia.com id ; Mon, 14 Nov 2016 08:00:52 -0800 Received: from HQMAIL107.nvidia.com ([172.20.13.39]) by hqnvupgp07.nvidia.com (PGP Universal service); Sun, 13 Nov 2016 19:40:38 -0800 X-PGP-Universal: processed; by hqnvupgp07.nvidia.com on Sun, 13 Nov 2016 19:40:38 -0800 Received: from HQMAIL105.nvidia.com (172.20.187.12) by HQMAIL107.nvidia.com (172.20.187.13) with Microsoft SMTP Server (TLS) id 15.0.1210.3; Mon, 14 Nov 2016 15:41:32 +0000 Received: from kwankhede-dev.nvidia.com (172.20.13.39) by HQMAIL105.nvidia.com (172.20.187.12) with Microsoft SMTP Server (TLS) id 15.0.1210.3 via Frontend Transport; Mon, 14 Nov 2016 15:41:29 +0000 From: Kirti Wankhede To: , , , Date: Mon, 14 Nov 2016 21:12:17 +0530 Message-ID: <1479138156-28905-4-git-send-email-kwankhede@nvidia.com> X-Mailer: git-send-email 2.7.0 In-Reply-To: <1479138156-28905-1-git-send-email-kwankhede@nvidia.com> References: <1479138156-28905-1-git-send-email-kwankhede@nvidia.com> X-NVConfidentiality: public MIME-Version: 1.0 X-detected-operating-system: by eggs.gnu.org: Windows 7 or 8 X-Received-From: 216.228.121.64 Subject: [Qemu-devel] [PATCH v12 03/22] vfio: Rearrange functions to get vfio_group from dev X-BeenThere: qemu-devel@nongnu.org X-Mailman-Version: 2.1.21 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Cc: jike.song@intel.com, kvm@vger.kernel.org, linux-kernel@vger.kernel.org, kevin.tian@intel.com, qemu-devel@nongnu.org, Kirti Wankhede , bjsdjshi@linux.vnet.ibm.com Errors-To: qemu-devel-bounces+patchwork-qemu-devel=patchwork.kernel.org@nongnu.org Sender: "Qemu-devel" X-Virus-Scanned: ClamAV using ClamSMTP This patch rearranges functions to get vfio_group from device Signed-off-by: Kirti Wankhede Signed-off-by: Neo Jia Reviewed-by: Jike Song Change-Id: I1f93262bdbab75094bc24b087b29da35ba70c4c6 --- drivers/vfio/vfio.c | 23 ++++++++++++++++------- 1 file changed, 16 insertions(+), 7 deletions(-) diff --git a/drivers/vfio/vfio.c b/drivers/vfio/vfio.c index d1d70e0b011b..23bc86c1d05d 100644 --- a/drivers/vfio/vfio.c +++ b/drivers/vfio/vfio.c @@ -480,6 +480,21 @@ static struct vfio_group *vfio_group_get_from_minor(int minor) return group; } +static struct vfio_group *vfio_group_get_from_dev(struct device *dev) +{ + struct iommu_group *iommu_group; + struct vfio_group *group; + + iommu_group = iommu_group_get(dev); + if (!iommu_group) + return NULL; + + group = vfio_group_get_from_iommu(iommu_group); + iommu_group_put(iommu_group); + + return group; +} + /** * Device objects - create, release, get, put, search */ @@ -811,16 +826,10 @@ EXPORT_SYMBOL_GPL(vfio_add_group_dev); */ struct vfio_device *vfio_device_get_from_dev(struct device *dev) { - struct iommu_group *iommu_group; struct vfio_group *group; struct vfio_device *device; - iommu_group = iommu_group_get(dev); - if (!iommu_group) - return NULL; - - group = vfio_group_get_from_iommu(iommu_group); - iommu_group_put(iommu_group); + group = vfio_group_get_from_dev(dev); if (!group) return NULL;