diff options
authorXudong Hao <xudong.hao@intel.com>2013-05-31 12:21:29 +0800
committerGreg Kroah-Hartman <gregkh@linuxfoundation.org>2013-07-21 18:21:30 -0700
commitc723caeecf4240abbdafbc4ccd96ef08828a2d4f (patch)
parent323af551c09ddc7cac1c22486b1419aeb1cccdd5 (diff)
PCI: Finish SR-IOV VF setup before adding the device
commit fbf33f516bdbcc2ab1ba1e54dfb720b0cfaa6874 upstream. Commit 4f535093cf "PCI: Put pci_dev in device tree as early as possible" moves device registering from pci_bus_add_devices() to pci_device_add(). That causes problems for virtual functions because device_add(&virtfn->dev) is called before setting the virtfn->is_virtfn flag, which then causes Xen to report PCI virtual functions as PCI physical functions. Fix it by setting virtfn->is_virtfn before calling pci_device_add(). [Jiang Liu]: Move the setting of virtfn->is_virtfn ahead further for better readability and modify changelog. Signed-off-by: Xudong Hao <xudong.hao@intel.com> Signed-off-by: Jiang Liu <jiang.liu@huawei.com> Signed-off-by: Bjorn Helgaas <bhelgaas@google.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
1 files changed, 2 insertions, 3 deletions
diff --git a/drivers/pci/iov.c b/drivers/pci/iov.c
index c93071d428f..a971a6f6268 100644
--- a/drivers/pci/iov.c
+++ b/drivers/pci/iov.c
@@ -92,6 +92,8 @@ static int virtfn_add(struct pci_dev *dev, int id, int reset)
pci_read_config_word(dev, iov->pos + PCI_SRIOV_VF_DID, &virtfn->device);
virtfn->dev.parent = dev->dev.parent;
+ virtfn->physfn = pci_dev_get(dev);
+ virtfn->is_virtfn = 1;
for (i = 0; i < PCI_SRIOV_NUM_BARS; i++) {
res = dev->resource + PCI_IOV_RESOURCES + i;
@@ -113,9 +115,6 @@ static int virtfn_add(struct pci_dev *dev, int id, int reset)
pci_device_add(virtfn, virtfn->bus);
- virtfn->physfn = pci_dev_get(dev);
- virtfn->is_virtfn = 1;
rc = pci_bus_add_device(virtfn);
sprintf(buf, "virtfn%u", id);
rc = sysfs_create_link(&dev->dev.kobj, &virtfn->dev.kobj, buf);