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i40e: clear qtx_head before enabling Tx queue

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Make sure the "new" qtx_head[q] register is cleared before
enabling the Tx queue.

Change-ID: I0c7a12815e343a5ae68807af172a35d6c6857935
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 2013-12-21 05:44:48 +00:00 • committed by Jeff Kirsher
parent 3126dcb736
commit c5c9eb9e78
1 changed files with 4 additions and 2 deletions
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6
drivers/net/ethernet/intel/i40e/i40e_main.c
View file

@ -3008,11 +3008,13 @@ static int i40e_vsi_control_tx(struct i40e_vsi *vsi, bool enable)
continue; continue;
/* turn on/off the queue */ /* turn on/off the queue */
if (enable) if (enable) {
wr32(hw, I40E_QTX_HEAD(pf_q), 0);
tx_reg |= I40E_QTX_ENA_QENA_REQ_MASK | tx_reg |= I40E_QTX_ENA_QENA_REQ_MASK |
I40E_QTX_ENA_QENA_STAT_MASK; I40E_QTX_ENA_QENA_STAT_MASK;
else } else {
tx_reg &= ~I40E_QTX_ENA_QENA_REQ_MASK; tx_reg &= ~I40E_QTX_ENA_QENA_REQ_MASK;
}
wr32(hw, I40E_QTX_ENA(pf_q), tx_reg); wr32(hw, I40E_QTX_ENA(pf_q), tx_reg);