From nobody Tue Feb 10 12:43:23 2026 Delivered-To: importer@patchew.org Received-SPF: pass (zoho.com: domain of redhat.com designates 209.132.183.24 as permitted sender) client-ip=209.132.183.24; envelope-from=libvir-list-bounces@redhat.com; helo=mx3-phx2.redhat.com; Authentication-Results: mx.zoho.com; spf=pass (zoho.com: domain of redhat.com designates 209.132.183.24 as permitted sender) smtp.mailfrom=libvir-list-bounces@redhat.com; Return-Path: Received: from mx3-phx2.redhat.com (mx3-phx2.redhat.com [209.132.183.24]) by mx.zohomail.com with SMTPS id 1489178329920500.20282621086176; Fri, 10 Mar 2017 12:38:49 -0800 (PST) Received: from lists01.pubmisc.prod.ext.phx2.redhat.com (lists01.pubmisc.prod.ext.phx2.redhat.com [10.5.19.33]) by mx3-phx2.redhat.com (8.13.8/8.13.8) with ESMTP id v2AKZhKo003430; Fri, 10 Mar 2017 15:35:43 -0500 Received: from int-mx14.intmail.prod.int.phx2.redhat.com (int-mx14.intmail.prod.int.phx2.redhat.com [10.5.11.27]) by lists01.pubmisc.prod.ext.phx2.redhat.com (8.13.8/8.13.8) with ESMTP id v2AKZLhb018976 for ; Fri, 10 Mar 2017 15:35:21 -0500 Received: from vhost2.laine.org (ovpn-116-174.phx2.redhat.com [10.3.116.174]) by int-mx14.intmail.prod.int.phx2.redhat.com (8.14.4/8.14.4) with ESMTP id v2AKZHif012172 for ; Fri, 10 Mar 2017 15:35:21 -0500 From: Laine Stump To: libvir-list@redhat.com Date: Fri, 10 Mar 2017 15:35:01 -0500 Message-Id: <20170310203512.15478-9-laine@laine.org> In-Reply-To: <20170310203512.15478-1-laine@laine.org> References: <20170310203512.15478-1-laine@laine.org> X-Scanned-By: MIMEDefang 2.68 on 10.5.11.27 X-loop: libvir-list@redhat.com Subject: [libvirt] [PATCH 08/19] util: new function virPCIDeviceRebind() X-BeenThere: libvir-list@redhat.com X-Mailman-Version: 2.1.12 Precedence: junk List-Id: Development discussions about the libvirt library & tools List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , MIME-Version: 1.0 Content-Transfer-Encoding: quoted-printable Sender: libvir-list-bounces@redhat.com Errors-To: libvir-list-bounces@redhat.com X-ZohoMail: RSF_0 Z_629925259 SPT_0 Content-Type: text/plain; charset="utf-8" This function unbinds a device from its driver, then immediately rebinds it to its driver again. --- src/libvirt_private.syms | 1 + src/util/virpci.c | 25 +++++++++++++++++++++++++ src/util/virpci.h | 1 + 3 files changed, 27 insertions(+) diff --git a/src/libvirt_private.syms b/src/libvirt_private.syms index b44a6ee..ef027cc 100644 --- a/src/libvirt_private.syms +++ b/src/libvirt_private.syms @@ -2217,6 +2217,7 @@ virPCIDeviceListSteal; virPCIDeviceListStealIndex; virPCIDeviceNew; virPCIDeviceReattach; +virPCIDeviceRebind; virPCIDeviceReset; virPCIDeviceSetManaged; virPCIDeviceSetRemoveSlot; diff --git a/src/util/virpci.c b/src/util/virpci.c index 9878398..a007eea 100644 --- a/src/util/virpci.c +++ b/src/util/virpci.c @@ -1101,6 +1101,31 @@ virPCIDeviceUnbind(virPCIDevicePtr dev) return ret; } =20 + +/** + * virPCIDeviceRebind: + * @dev: virPCIDevice object describing the device to rebind + * + * unbind a device from its driver, then immediately rebind it. + * + * Returns 0 on success, -1 on failure + */ +int virPCIDeviceRebind(virPCIDevicePtr dev) +{ + if (virPCIDeviceUnbind(dev) < 0) + return -1; + + if (virFileWriteStr(PCI_SYSFS "drivers_probe", dev->name, 0) < 0) { + virReportSystemError(errno, + _("Failed to trigger a probe for PCI device '= %s'"), + dev->name); + return -1; + } + + return 0; +} + + /* * Bind a PCI device to a driver using driver_override sysfs interface. * E.g. diff --git a/src/util/virpci.h b/src/util/virpci.h index 4be9cc0..8637c2c 100644 --- a/src/util/virpci.h +++ b/src/util/virpci.h @@ -225,6 +225,7 @@ int virPCIGetVirtualFunctionInfo(const char *vf_sysfs_d= evice_path, char **pfname, int *vf_index); =20 int virPCIDeviceUnbind(virPCIDevicePtr dev); +int virPCIDeviceRebind(virPCIDevicePtr dev); int virPCIDeviceGetDriverPathAndName(virPCIDevicePtr dev, char **path, char **name); --=20 2.9.3 -- libvir-list mailing list libvir-list@redhat.com https://www.redhat.com/mailman/listinfo/libvir-list