Patch "PCI: Create SR-IOV virtfn/physfn links before attaching driver" has been added to the 3.18-stable tree

Patch "PCI: Create SR-IOV virtfn/physfn links before attaching driver" has been added to the 3.18-stable tree

[gregkh]

This is a note to let you know that I've just added the patch titled

    PCI: Create SR-IOV virtfn/physfn links before attaching driver

to the 3.18-stable tree which can be found at:
    http://www.kernel.org/git/?p=linux/kernel/git/stable/stable-queue.git;a=summary

The filename of the patch is:
     pci-create-sr-iov-virtfn-physfn-links-before-attaching-driver.patch
and it can be found in the queue-3.18 subdirectory.

If you, or anyone else, feels it should not be added to the stable tree,
please let <stable@vger.kernel.org> know about it.


>From foo@baz Thu Dec 21 10:55:04 CET 2017
From: Stuart Hayes <stuart.w.hayes@gmail.com>
Date: Wed, 4 Oct 2017 10:57:52 -0500
Subject: PCI: Create SR-IOV virtfn/physfn links before attaching driver

From: Stuart Hayes <stuart.w.hayes@gmail.com>


[ Upstream commit 27d6162944b9b34c32cd5841acd21786637ee743 ]

When creating virtual functions, create the "virtfn%u" and "physfn" links
in sysfs *before* attaching the driver instead of after.  When we attach
the driver to the new virtual network interface first, there is a race when
the driver attaches to the new sends out an "add" udev event, and the
network interface naming software (biosdevname or systemd, for example)
tries to look at these links.

Signed-off-by: Stuart Hayes <stuart.w.hayes@gmail.com>
Signed-off-by: Bjorn Helgaas <bhelgaas@google.com>
Signed-off-by: Sasha Levin <alexander.levin@verizon.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
---
 drivers/pci/iov.c |    3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

--- a/drivers/pci/iov.c
+++ b/drivers/pci/iov.c
@@ -106,7 +106,6 @@ static int virtfn_add(struct pci_dev *de
 	pci_device_add(virtfn, virtfn->bus);
 	mutex_unlock(&iov->dev->sriov->lock);
 
-	pci_bus_add_device(virtfn);
 	sprintf(buf, "virtfn%u", id);
 	rc = sysfs_create_link(&dev->dev.kobj, &virtfn->dev.kobj, buf);
 	if (rc)
@@ -117,6 +116,8 @@ static int virtfn_add(struct pci_dev *de
 
 	kobject_uevent(&virtfn->dev.kobj, KOBJ_CHANGE);
 
+	pci_bus_add_device(virtfn);
+
 	return 0;
 
 failed2:


Patches currently in stable-queue which might be from stuart.w.hayes@gmail.com are

queue-3.18/pci-create-sr-iov-virtfn-physfn-links-before-attaching-driver.patch