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authorMitch A Williams <mitch.a.williams@intel.com>2013-06-20 06:03:36 +0000
committerJeff Kirsher <jeffrey.t.kirsher@intel.com>2013-08-22 02:25:44 -0700
commit502671967403c611b362836aef8cdee65e9a626a (patch)
tree882a9eac560ff0c90d8c549e0b196811884d43c9 /drivers/net/ethernet/intel/igb
parent7f90128e246ea9827dd5ac532e49611aaf001892 (diff)
downloadblackbird-op-linux-502671967403c611b362836aef8cdee65e9a626a.tar.gz
blackbird-op-linux-502671967403c611b362836aef8cdee65e9a626a.zip
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>
Diffstat (limited to 'drivers/net/ethernet/intel/igb')
-rw-r--r--drivers/net/ethernet/intel/igb/igb_main.c5
1 files changed, 5 insertions, 0 deletions
diff --git a/drivers/net/ethernet/intel/igb/igb_main.c b/drivers/net/ethernet/intel/igb/igb_main.c
index 8e7c1b83da19..94295a06c124 100644
--- a/drivers/net/ethernet/intel/igb/igb_main.c
+++ b/drivers/net/ethernet/intel/igb/igb_main.c
@@ -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)
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