diff options
| -rw-r--r-- | drivers/pci/iov.c | 11 |
1 files changed, 9 insertions, 2 deletions
diff --git a/drivers/pci/iov.c b/drivers/pci/iov.c index a71258347323..dafdc652fcd0 100644 --- a/drivers/pci/iov.c +++ b/drivers/pci/iov.c @@ -391,9 +391,16 @@ static ssize_t sriov_numvfs_store(struct device *dev, if (num_vfs == pdev->sriov->num_VFs) goto exit; + /* is PF driver loaded */ + if (!pdev->driver) { + pci_info(pdev, "no driver bound to device; cannot configure SR-IOV\n"); + ret = -ENOENT; + goto exit; + } + /* is PF driver loaded w/callback */ - if (!pdev->driver || !pdev->driver->sriov_configure) { - pci_info(pdev, "Driver does not support SRIOV configuration via sysfs\n"); + if (!pdev->driver->sriov_configure) { + pci_info(pdev, "driver does not support SR-IOV configuration via sysfs\n"); ret = -ENOENT; goto exit; } |