diff options
Diffstat (limited to 'drivers/pci/iov.c')
| -rw-r--r-- | drivers/pci/iov.c | 8 |
1 files changed, 7 insertions, 1 deletions
diff --git a/drivers/pci/iov.c b/drivers/pci/iov.c index b3f972e8cfed..1d3de1ea081d 100644 --- a/drivers/pci/iov.c +++ b/drivers/pci/iov.c @@ -254,8 +254,14 @@ static ssize_t sriov_numvfs_show(struct device *dev, char *buf) { struct pci_dev *pdev = to_pci_dev(dev); + u16 num_vfs; + + /* Serialize vs sriov_numvfs_store() so readers see valid num_VFs */ + device_lock(&pdev->dev); + num_vfs = pdev->sriov->num_VFs; + device_unlock(&pdev->dev); - return sprintf(buf, "%u\n", pdev->sriov->num_VFs); + return sprintf(buf, "%u\n", num_vfs); } /* |