1 files changed, 10 insertions, 7 deletions

diff --git a/drivers/pci/iov.c b/drivers/pci/iov.c
index e73bdae447cc..21a7182dccd4 100644
--- a/drivers/pci/iov.c
+++ b/drivers/pci/iov.c
@@ -323,7 +323,7 @@ static int sriov_enable(struct pci_dev *dev, int nr_virtfn)
 
                 if (!pdev->is_physfn) {
                         pci_dev_put(pdev);
-                        return -ENODEV;
+                        return -ENOSYS;
                 }
 
                 rc = sysfs_create_link(&dev->dev.kobj,
@@ -664,7 +664,7 @@ int pci_enable_sriov(struct pci_dev *dev, int nr_virtfn)
         might_sleep();
 
         if (!dev->is_physfn)
-                return -ENODEV;
+                return -ENOSYS;
 
         return sriov_enable(dev, nr_virtfn);
 }
@@ -724,7 +724,7 @@ EXPORT_SYMBOL_GPL(pci_num_vf);
  * @dev: the PCI device
  *
  * Returns number of VFs belonging to this device that are assigned to a guest.
- * If device is not a physical function returns -ENODEV.
+ * If device is not a physical function returns 0.
  */
 int pci_vfs_assigned(struct pci_dev *dev)
 {
@@ -769,12 +769,15 @@ EXPORT_SYMBOL_GPL(pci_vfs_assigned);
  * device's mutex held.
  *
  * Returns 0 if PF is an SRIOV-capable device and
- * value of numvfs valid. If not a PF with VFS, return -EINVAL;
+ * value of numvfs valid. If not a PF return -ENOSYS;
+ * if numvfs is invalid return -EINVAL;
  * if VFs already enabled, return -EBUSY.
  */
 int pci_sriov_set_totalvfs(struct pci_dev *dev, u16 numvfs)
 {
-        if (!dev->is_physfn || (numvfs > dev->sriov->total_VFs))
+        if (!dev->is_physfn)
+                return -ENOSYS;
+        if (numvfs > dev->sriov->total_VFs)
                 return -EINVAL;
 
         /* Shouldn't change if VFs already enabled */
@@ -793,12 +796,12 @@ EXPORT_SYMBOL_GPL(pci_sriov_set_totalvfs);
  *
  * For a PCIe device with SRIOV support, return the PCIe
  * SRIOV capability value of TotalVFs or the value of driver_max_VFs
- * if the driver reduced it.  Otherwise, -EINVAL.
+ * if the driver reduced it.  Otherwise 0.
  */
 int pci_sriov_get_totalvfs(struct pci_dev *dev)
 {
         if (!dev->is_physfn)
-                return -EINVAL;
+                return 0;
 
         if (dev->sriov->driver_max_VFs)
                 return dev->sriov->driver_max_VFs;