Commit c5c9eb9e authored Dec 21, 2013 by Shannon Nelson Committed by Jeff Kirsher Jan 10, 2014

i40e: clear qtx_head before enabling Tx queue



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>

parent 3126dcb7

drivers/net/ethernet/intel/i40e/i40e_main.c

+4 −2

Original line number	Diff line number	Diff line
		@@ -3008,11 +3008,13 @@ static int i40e_vsi_control_tx(struct i40e_vsi *vsi, bool enable)
		continue;

		/* 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 \|
		I40E_QTX_ENA_QENA_STAT_MASK;
		else
		} else {
		tx_reg &= ~I40E_QTX_ENA_QENA_REQ_MASK;
		}

		wr32(hw, I40E_QTX_ENA(pf_q), tx_reg);