From patchwork Sat Oct 29 20:05:11 2016 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Jike Song X-Patchwork-Id: 9404087 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 861AB60588 for ; Sat, 29 Oct 2016 20:11:15 +0000 (UTC) Received: from mail.wl.linuxfoundation.org (localhost [127.0.0.1]) by mail.wl.linuxfoundation.org (Postfix) with ESMTP id 791B2291BB for ; Sat, 29 Oct 2016 20:11:15 +0000 (UTC) Received: by mail.wl.linuxfoundation.org (Postfix, from userid 486) id 6E175291C0; Sat, 29 Oct 2016 20:11:15 +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 vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.wl.linuxfoundation.org (Postfix) with ESMTP id 51AD8291BF for ; Sat, 29 Oct 2016 20:11:14 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1753752AbcJ2ULL (ORCPT ); Sat, 29 Oct 2016 16:11:11 -0400 Received: from mga02.intel.com ([134.134.136.20]:40163 "EHLO mga02.intel.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1752485AbcJ2ULL (ORCPT ); Sat, 29 Oct 2016 16:11:11 -0400 Received: from orsmga004.jf.intel.com ([10.7.209.38]) by orsmga101.jf.intel.com with ESMTP; 29 Oct 2016 13:11:10 -0700 X-ExtLoop1: 1 X-IronPort-AV: E=Sophos;i="5.31,565,1473145200"; d="scan'208";a="25569142" Received: from kvmgt1.bj.intel.com ([10.238.154.158]) by orsmga004.jf.intel.com with ESMTP; 29 Oct 2016 13:11:08 -0700 From: Jike Song To: pbonzini@redhat.com, alex.williamson@redhat.com, guangrong.xiao@linux.intel.com Cc: kwankhede@nvidia.com, cjia@nvidia.com, kevin.tian@intel.com, jike.song@intel.com, kvm@vger.kernel.org Subject: [v2 1/5] vfio: Rearrange functions to get vfio_group from dev Date: Sun, 30 Oct 2016 04:05:11 +0800 Message-Id: <1477771515-18015-2-git-send-email-jike.song@intel.com> X-Mailer: git-send-email 1.9.1 In-Reply-To: <1477771515-18015-1-git-send-email-jike.song@intel.com> References: <1477771515-18015-1-git-send-email-jike.song@intel.com> Sender: kvm-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: kvm@vger.kernel.org X-Virus-Scanned: ClamAV using ClamSMTP From: Kirti Wankhede This patch rearranges functions to get vfio_group from device Signed-off-by: Kirti Wankhede Signed-off-by: Neo Jia 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 d1d70e0..23bc86c 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 @@ int vfio_add_group_dev(struct device *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;