From patchwork Mon Mar 25 08:18:03 2019 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 8bit X-Patchwork-Submitter: CREGUT Pierre IMT/OLN X-Patchwork-Id: 1063917 X-Patchwork-Delegate: bhelgaas@google.com Return-Path: X-Original-To: incoming@patchwork.ozlabs.org Delivered-To: patchwork-incoming@bilbo.ozlabs.org Authentication-Results: ozlabs.org; spf=none (mailfrom) smtp.mailfrom=vger.kernel.org (client-ip=209.132.180.67; helo=vger.kernel.org; envelope-from=linux-pci-owner@vger.kernel.org; receiver=) Authentication-Results: ozlabs.org; dmarc=none (p=none dis=none) header.from=orange.com Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by ozlabs.org (Postfix) with ESMTP id 44SS482kkzz9sSh for ; Mon, 25 Mar 2019 19:24:55 +1100 (AEDT) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1729943AbfCYIYx (ORCPT ); Mon, 25 Mar 2019 04:24:53 -0400 Received: from p-mail-ext.rd.orange.com ([161.106.1.9]:40114 "EHLO p-mail-ext.rd.orange.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1729934AbfCYIYx (ORCPT ); Mon, 25 Mar 2019 04:24:53 -0400 X-Greylist: delayed 328 seconds by postgrey-1.27 at vger.kernel.org; Mon, 25 Mar 2019 04:24:53 EDT Received: from p-mail-ext.rd.orange.com (localhost [127.0.0.1]) by localhost (Postfix) with SMTP id 718AA5613B6 for ; Mon, 25 Mar 2019 09:19:05 +0100 (CET) Received: from p-mail-int.rd.francetelecom.fr (p-mail-int.rd.francetelecom.fr [10.192.117.12]) by p-mail-ext.rd.orange.com (Postfix) with ESMTP id 6D667561363 for ; Mon, 25 Mar 2019 09:19:05 +0100 (CET) Received: from p-mail-int.rd.francetelecom.fr (localhost.localdomain [127.0.0.1]) by localhost (Postfix) with SMTP id 2A5A218154A; Mon, 25 Mar 2019 09:19:06 +0100 (CET) Received: from yd-CZC9059FTQ.rd.francetelecom.fr (yd-CZC9059FTQ.rd.francetelecom.fr [10.193.71.88]) by p-mail-int.rd.francetelecom.fr (Postfix) with ESMTP id F11A818152B; Mon, 25 Mar 2019 09:19:05 +0100 (CET) From: =?utf-8?q?Pierre_Cr=C3=A9gut?= To: linux-pci@vger.kernel.org Cc: =?utf-8?q?Pierre_Cr=C3=A9gut?= Subject: [PATCH] PCI/IOV: update num_VFs earlier Date: Mon, 25 Mar 2019 09:18:03 +0100 Message-Id: <20190325081803.30094-1-pierre.cregut@orange.com> X-Mailer: git-send-email 2.17.1 MIME-Version: 1.0 X-PMX-Version: 6.4.6.2792898, Antispam-Engine: 2.7.2.2107409, Antispam-Data: 2019.3.25.80916, AntiVirus-Engine: 5.60.0, AntiVirus-Data: 2019.3.25.5600000 X-PMX-Spam: Gauge=IIIIIIII, Probability=8%, Report=' HTML_00_01 0.05, HTML_00_10 0.05, BODYTEXTP_SIZE_3000_LESS 0, BODY_SIZE_1200_1299 0, BODY_SIZE_2000_LESS 0, BODY_SIZE_5000_LESS 0, BODY_SIZE_7000_LESS 0, CT_TEXT_PLAIN_UTF8_CAPS 0, LEGITIMATE_SIGNS 0, MULTIPLE_REAL_RCPTS 0, SINGLE_URI_IN_BODY 0, URI_WITH_PATH_ONLY 0, __ANY_URI 0, __CC_NAME 0, __CC_NAME_DIFF_FROM_ACC 0, __CC_REAL_NAMES 0, __CP_URI_IN_BODY 0, __CT 0, __CTE 0, __CT_TEXT_PLAIN 0, __FROM_DOMAIN_IN_ANY_CC1 0, __FROM_DOMAIN_IN_RCPT 0, __FROM_UTF_Q 0, __HAS_CC_HDR 0, __HAS_FROM 0, __HAS_MSGID 0, __HAS_X_MAILER 0, __HTTPS_URI 0, __MIME_TEXT_ONLY 0, __MIME_TEXT_P 0, __MIME_TEXT_P1 0, __MIME_VERSION 0, __NO_HTML_TAG_RAW 0, __PHISH_PHRASE1_B 0, __PHISH_SPEAR_SUBJ_PREDICATE 0, __SANE_MSGID 0, __SINGLE_URI_TEXT 0, __SUBJ_ALPHA_END 0, __TO_MALFORMED_2 0, __TO_NO_NAME 0, __URI_IN_BODY 0, __URI_NOT_IMG 0, __URI_NO_WWW 0, __URI_NS , __URI_WITH_PATH 0' Sender: linux-pci-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-pci@vger.kernel.org Ensure that iov->num_VFs is set before a netlink message is sent when the number of VFs is changed. Otherwise /sys/.../sriov_numvfs is not updated when read immediately after receiving the netlink message. Link: https://bugzilla.kernel.org/show_bug.cgi?id=202991 Signed-off-by: Pierre Crégut --- drivers/pci/iov.c | 3 ++- 1 file changed, 2 insertions(+), 1 deletion(-) diff --git a/drivers/pci/iov.c b/drivers/pci/iov.c index 3aa115ed3a65..a9655c10e87f 100644 --- a/drivers/pci/iov.c +++ b/drivers/pci/iov.c @@ -351,6 +351,7 @@ static int sriov_enable(struct pci_dev *dev, int nr_virtfn) goto err_pcibios; } + iov->num_VFs = nr_virtfn; pci_iov_set_numvfs(dev, nr_virtfn); iov->ctrl |= PCI_SRIOV_CTRL_VFE | PCI_SRIOV_CTRL_MSE; pci_cfg_access_lock(dev); @@ -363,7 +364,6 @@ static int sriov_enable(struct pci_dev *dev, int nr_virtfn) goto err_pcibios; kobject_uevent(&dev->dev.kobj, KOBJ_CHANGE); - iov->num_VFs = nr_virtfn; return 0; @@ -379,6 +379,7 @@ static int sriov_enable(struct pci_dev *dev, int nr_virtfn) if (iov->link != dev->devfn) sysfs_remove_link(&dev->dev.kobj, "dep_link"); + iov->num_VFs = 0; pci_iov_set_numvfs(dev, 0); return rc; }