Merge remote-tracking branches 'asoc/fix/tlv320aic3x' and 'asoc/fix/wm8962' into...

[linux-drm-fsl-dcu.git] / drivers / net / ethernet / intel / i40evf / i40e_adminq.c

diff --git a/drivers/net/ethernet/intel/i40evf/i40e_adminq.c b/drivers/net/ethernet/intel/i40evf/i40e_adminq.c
index f08450b907745afefcdd6da766f7a32ae3aa57c2..929d47152bf271b1ddba3d8dc284d1941131261a 100644 (file)
--- a/drivers/net/ethernet/intel/i40evf/i40e_adminq.c
+++ b/drivers/net/ethernet/intel/i40evf/i40e_adminq.c
@@ -887,6 +887,13 @@ i40e_status i40evf_clean_arq_element(struct i40e_hw *hw,
        /* take the lock before we start messing with the ring */
        mutex_lock(&hw->aq.arq_mutex);
 
+       if (hw->aq.arq.count == 0) {
+               i40e_debug(hw, I40E_DEBUG_AQ_MESSAGE,
+                          "AQRX: Admin queue not initialized.\n");
+               ret_code = I40E_ERR_QUEUE_EMPTY;
+               goto clean_arq_element_err;
+       }
+
        /* set next_to_use to head */
        ntu = (rd32(hw, hw->aq.arq.head) & I40E_VF_ARQH1_ARQH_MASK);
        if (ntu == ntc) {
@@ -948,6 +955,8 @@ clean_arq_element_out:
        /* Set pending if needed, unlock and return */
        if (pending != NULL)
                *pending = (ntc > ntu ? hw->aq.arq.count : 0) + (ntu - ntc);
+
+clean_arq_element_err:
        mutex_unlock(&hw->aq.arq_mutex);
 
        return ret_code;