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i40evf: propagate interrupt allocation failure 

Lower level functions are properly reporting errors, and higher-level
functions are correctly responding to errors, but the errors aren't
actually getting through. Typically, the middle-manager function seems
to want to shield its boss from any bad news.

This change fixes a panic if the driver is unable to enable MSI-X or is
unable to acquire enough vectors.

Change-ID: Ifd5787ce92519a5d97e4b465902db930d97b71a1
Signed-off-by: Mitch Williams <mitch.a.williams@intel.com>
Tested-by: Andrew Bowers <andrewx.bowers@intel.com>
Signed-off-by: Jeff Kirsher <jeffrey.t.kirsher@intel.com>
This commit is contained in:
Mitch Williams 2015-08-27 11:42:31 -04:00 committed by Jeff Kirsher
parent 2642f02528
commit 313ed2d520
1 changed files with 1 additions and 1 deletions
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2
drivers/net/ethernet/intel/i40evf/i40evf_main.c
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@ -1163,7 +1163,7 @@ static int i40evf_set_interrupt_capability(struct i40evf_adapter *adapter)
for (vector = 0; vector < v_budget; vector++)
adapter->msix_entries[vector].entry = vector;
i40evf_acquire_msix_vectors(adapter, v_budget);
err = i40evf_acquire_msix_vectors(adapter, v_budget);
out:
adapter->netdev->real_num_tx_queues = pairs;