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i40e: catch unset q_vector 

Don't try to free a q_vector that hasn't been set up as it can
panic the kernel.

Change-Id: I0650cc6c441d0779788c522c790293c276d14fbc
Signed-off-by: Shannon Nelson <shannon.nelson@intel.com>
Signed-off-by: Jesse Brandeburg <jesse.brandeburg@intel.com>
Tested-by: Kavindya Deegala <kavindya.s.deegala@intel.com>
Signed-off-by: Jeff Kirsher <jeffrey.t.kirsher@intel.com>
This commit is contained in:
Shannon Nelson 2013-11-28 06:39:36 +00:00 committed by Jeff Kirsher
parent 90bb776ae5
commit 78681b1f87
1 changed files with 2 additions and 1 deletions
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3
drivers/net/ethernet/intel/i40e/i40e_main.c
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@ -3153,7 +3153,8 @@ static void i40e_vsi_free_irq(struct i40e_vsi *vsi)
u16 vector = i + base;
/* free only the irqs that were actually requested */
if (vsi->q_vectors[i]->num_ringpairs == 0)
if (!vsi->q_vectors[i] ||
!vsi->q_vectors[i]->num_ringpairs)
continue;
/* clear the affinity_mask in the IRQ descriptor */