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igb: don't allow SR-IOV without MSI-X 

MSI-X interrupts are required for SR-IOV operation. Check to make sure
they're enabled before allowing the user to turn on VFs.

Signed-off-by: Mitch Williams <mitch.a.williams@intel.com>
Tested-by: Aaron Brown <aaron.f.brown@intel.com>
Signed-off-by: Jeff Kirsher <jeffrey.t.kirsher@intel.com>
This commit is contained in:
Mitch A Williams 2013-06-20 06:03:36 +00:00 committed by Jeff Kirsher
parent 7f90128e24
commit 5026719674
1 changed files with 5 additions and 0 deletions
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5
drivers/net/ethernet/intel/igb/igb_main.c
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@ -2436,6 +2436,11 @@ static int igb_enable_sriov(struct pci_dev *pdev, int num_vfs)
int err = 0;
int i;
if (!adapter->msix_entries) {
err = -EPERM;
goto out;
}
if (!num_vfs)
goto out;
else if (old_vfs && old_vfs == num_vfs)