From patchwork Wed Sep 22 10:38:52 2021 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Leon Romanovsky X-Patchwork-Id: 12510119 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=-20.5 required=3.0 tests=BAYES_00,DKIMWL_WL_HIGH, DKIM_SIGNED,DKIM_VALID,DKIM_VALID_AU,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 5EC05C433EF for ; Wed, 22 Sep 2021 10:39:11 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id 493E361268 for ; Wed, 22 Sep 2021 10:39:11 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S235027AbhIVKkj (ORCPT ); Wed, 22 Sep 2021 06:40:39 -0400 Received: from mail.kernel.org ([198.145.29.99]:48696 "EHLO mail.kernel.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S234734AbhIVKki (ORCPT ); Wed, 22 Sep 2021 06:40:38 -0400 Received: by mail.kernel.org (Postfix) with ESMTPSA id A7FF16124A; Wed, 22 Sep 2021 10:39:07 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=k20201202; t=1632307148; bh=/gc7+wOTA0t/zZJ425FFjXn+DjYzc8eMUW6GifvrrhE=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=rnnkUJn0WU39rcKQfn/jPed6FTY7mF3iRgRKZsitvrugUkayo382ItD0I9O7Y7lME g9JN6FPXLQXmVPK5g3Jp9vIrpSm5LFZ+DYI5yMH7xvVVphqJQ3HvVIiDRsxK9ueQOR sXUFS0y4tR7caLpFZulhbVd8CMK+4OZ+i89iTl8tWjA+G94saKvinTp0MEbV+0ZOvE UzJTon0x5dPZsV7s6OQAGxiCNyj1VJ4xi22Ktgkeu+BUkHllCXONviGs/CDpPi22HU /VhzaEFw8e/k2QfrtXjkjLhqQ1AMRO2aL7+kZVHygJyRNZSHs2sqKBzkHoC+BM05if x7r15FL+ZxSSw== From: Leon Romanovsky To: Doug Ledford , Jason Gunthorpe Cc: Yishai Hadas , Alex Williamson , Bjorn Helgaas , "David S. Miller" , Jakub Kicinski , Kirti Wankhede , kvm@vger.kernel.org, linux-kernel@vger.kernel.org, linux-pci@vger.kernel.org, linux-rdma@vger.kernel.org, netdev@vger.kernel.org, Saeed Mahameed Subject: [PATCH mlx5-next 3/7] vfio/pci_core: Make the region->release() function optional Date: Wed, 22 Sep 2021 13:38:52 +0300 Message-Id: X-Mailer: git-send-email 2.31.1 In-Reply-To: References: MIME-Version: 1.0 Precedence: bulk List-ID: X-Mailing-List: linux-pci@vger.kernel.org From: Yishai Hadas Make the region->release() function optional as in some cases there is nothing to do by driver as part of it. This is needed for coming patch from this series once we add mlx5_vfio_cpi driver to support live migration but we don't need a migration release function. Signed-off-by: Yishai Hadas Signed-off-by: Leon Romanovsky Reviewed-by: Max Gurtovoy --- drivers/vfio/pci/vfio_pci_core.c | 3 ++- 1 file changed, 2 insertions(+), 1 deletion(-) diff --git a/drivers/vfio/pci/vfio_pci_core.c b/drivers/vfio/pci/vfio_pci_core.c index 68198e0f2a63..3ddc3adb24de 100644 --- a/drivers/vfio/pci/vfio_pci_core.c +++ b/drivers/vfio/pci/vfio_pci_core.c @@ -341,7 +341,8 @@ void vfio_pci_core_disable(struct vfio_pci_core_device *vdev) vdev->virq_disabled = false; for (i = 0; i < vdev->num_regions; i++) - vdev->region[i].ops->release(vdev, &vdev->region[i]); + if (vdev->region[i].ops->release) + vdev->region[i].ops->release(vdev, &vdev->region[i]); vdev->num_regions = 0; kfree(vdev->region);