igb: do not check for vf_data if we didn't enable vfs

The driver is currently dumping a message in the log about failing to
allocate vf data when max_vfs is equal to 0.  This change makes it so the
error message is only displayed if we set max_vfs to a non zero value.

Signed-off-by: Alexander Duyck <alexander.h.duyck@intel.com>
Signed-off-by: Jeff Kirsher <jeffrey.t.kirsher@intel.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

diff --git a/drivers/net/igb/igb_main.c b/drivers/net/igb/igb_main.c
index db7274e..08c8014 100644 (file)
--- a/drivers/net/igb/igb_main.c
+++ b/drivers/net/igb/igb_main.c
@@ -1261,25 +1261,32 @@ static int __devinit igb_probe(struct pci_dev *pdev,
                int i;
                unsigned char mac_addr[ETH_ALEN];
 
-               if (num_vfs)
+               if (num_vfs) {
                        adapter->vf_data = kcalloc(num_vfs,
                                                sizeof(struct vf_data_storage),
                                                GFP_KERNEL);
-               if (!adapter->vf_data) {
-                       dev_err(&pdev->dev, "Could not allocate VF private "
-                               "data - IOV enable failed\n");
-               } else {
-                       err = pci_enable_sriov(pdev, num_vfs);
-                       if (!err) {
-                               adapter->vfs_allocated_count = num_vfs;
-                               dev_info(&pdev->dev, "%d vfs allocated\n", num_vfs);
-                               for (i = 0; i < adapter->vfs_allocated_count; i++) {
-                                       random_ether_addr(mac_addr);
-                                       igb_set_vf_mac(adapter, i, mac_addr);
-                               }
+                       if (!adapter->vf_data) {
+                               dev_err(&pdev->dev,
+                                       "Could not allocate VF private data - "
+                                       "IOV enable failed\n");
                        } else {
-                               kfree(adapter->vf_data);
-                               adapter->vf_data = NULL;
+                               err = pci_enable_sriov(pdev, num_vfs);
+                               if (!err) {
+                                       adapter->vfs_allocated_count = num_vfs;
+                                       dev_info(&pdev->dev,
+                                                "%d vfs allocated\n",
+                                                num_vfs);
+                                       for (i = 0;
+                                            i < adapter->vfs_allocated_count;
+                                            i++) {
+                                               random_ether_addr(mac_addr);
+                                               igb_set_vf_mac(adapter, i,
+                                                              mac_addr);
+                                       }
+                               } else {
+                                       kfree(adapter->vf_data);
+                                       adapter->vf_data = NULL;
+                               }
                        }
                }
        }