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i40e: don't free nonexistent rings

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Not all VSIs have rings! Check to see if rings were actually allocated before
freeing them.

This prevents a panic when tx_rings[0] is not allocated.

Signed-off-by: Mitch Williams <mitch.a.williams@intel.com>
Signed-off-by: Jesse Brandeburg <jesse.brandeburg@intel.com>
Tested-by: Sibai Li <sibai.li@intel.com>
Signed-off-by: Jeff Kirsher <jeffrey.t.kirsher@intel.com>
This commit is contained in:
Mitch Williams 2013-09-28 07:13:13 +00:00 committed by Jeff Kirsher
parent 1022cb6c35
commit 00403f0488
1 changed files with 6 additions and 5 deletions
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11
drivers/net/ethernet/intel/i40e/i40e_main.c
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@ -5160,11 +5160,12 @@ static s32 i40e_vsi_clear_rings(struct i40e_vsi *vsi)
{
int i;
for (i = 0; i < vsi->alloc_queue_pairs; i++) {
kfree_rcu(vsi->tx_rings[i], rcu);
vsi->tx_rings[i] = NULL;
vsi->rx_rings[i] = NULL;
}
if (vsi->tx_rings[0])
for (i = 0; i < vsi->alloc_queue_pairs; i++) {
kfree_rcu(vsi->tx_rings[i], rcu);
vsi->tx_rings[i] = NULL;
vsi->rx_rings[i] = NULL;
}
return 0;
}