i40e: Remove MSIx only if created

Orabug: 23176970

When cleaning up the interrupt handling, clean up the IRQs only if
we actually got them set up.  There are a couple of error recovery
paths that were violating this and causing the kernel a bit of
indigestion.

Signed-off-by: Shannon Nelson <shannon.nelson@intel.com>
Reviewed-by: Williams, Mitch A <mitch.a.williams@intel.com>
Tested-by: Andrew Bowers <andrewx.bowers@intel.com>
Signed-off-by: Jeff Kirsher <jeffrey.t.kirsher@intel.com>
(cherry picked from commit 692783980ad6163e8586baa36c066cd0d22fc7ce)
Signed-off-by: Brian Maly <brian.maly@oracle.com>

diff --git a/drivers/net/ethernet/intel/i40e/i40e_main.c b/drivers/net/ethernet/intel/i40e/i40e_main.c
index 56c49132cb1c2cbea843658dfad3edd919cca4a0..b7345e8b1ad2aa23e98559f15190f3c999eae983 100644 (file)
--- a/drivers/net/ethernet/intel/i40e/i40e_main.c
+++ b/drivers/net/ethernet/intel/i40e/i40e_main.c
@@ -4135,7 +4135,7 @@ static void i40e_clear_interrupt_scheme(struct i40e_pf *pf)
        int i;
 
        i40e_stop_misc_vector(pf);
-       if (pf->flags & I40E_FLAG_MSIX_ENABLED) {
+       if (pf->flags & I40E_FLAG_MSIX_ENABLED && pf->msix_entries) {
                synchronize_irq(pf->msix_entries[0].vector);
                free_irq(pf->msix_entries[0].vector, pf);
        }