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i40evf: ignore bogus messages from FW

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Occasionally on shutdown, the FW will hand us a bunch of messages filled
with zeros, which can cause us to spin trying to handle them. Just
ignore these and get on with shutting down.

Change-ID: I347e9648f7153ad5a7b7e0847b87f7aad5f3e0da
Signed-off-by: Mitch Williams <mitch.a.williams@intel.com>
Tested-by: Jim Young <james.m.young@intel.com>
Signed-off-by: Jeff Kirsher <jeffrey.t.kirsher@intel.com>
This commit is contained in:
Mitch Williams 2015-01-09 11:18:17 +00:00 committed by Jeff Kirsher
parent f4a718810c
commit 8b011ebb5c
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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@ -1631,7 +1631,7 @@ static void i40evf_adminq_task(struct work_struct *work)
v_msg = (struct i40e_virtchnl_msg *)&event.desc;
do {
ret = i40evf_clean_arq_element(hw, &event, &pending);
if (ret)
if (ret || !v_msg->v_opcode)
break; /* No event to process or error cleaning ARQ */
i40evf_virtchnl_completion(adapter, v_msg->v_opcode,