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Commit 8756990f authored by Ben M Cahill's avatar Ben M Cahill Committed by John W. Linville
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iwlagn: update write pointers in iwl_irq_tasklet() 



Follow-up to "update write pointers for all tx queues after wakeup"; that
patch changed iwl_irq_tasklet_legacy(), but not iwl_irq_tasklet(), so
newer devices were not covered.

Comments from original patch:

Wakeup interrupt has been updating write pointers (indexes, actually) only
for tx queues 0-5.  This is adequate just for 3945, but inadequate for other
devices, all of which have more tx queues.  Now updating all tx/command queues,
so device can be aware of all new tx and host commands enqueued while
device was asleep.

This can potentially improve data traffic bandwidth and/or latency.

Signed-off-by: default avatarBen Cahill <ben.m.cahill@intel.com>
Signed-off-by: default avatarReinette Chatre <reinette.chatre@intel.com>
Signed-off-by: default avatarJohn W. Linville <linville@tuxdriver.com>
parent a7e66110

drivers/net/wireless/iwlwifi/iwl-agn.c

+3 −6
Original line number Diff line number Diff line
@@ -1084,6 +1084,7 @@ static void iwl_irq_tasklet(struct iwl_priv *priv) 
	u32 inta = 0;

	u32 handled = 0;

	unsigned long flags;

	u32 i;

#ifdef CONFIG_IWLWIFI_DEBUG

	u32 inta_mask;

#endif
@@ -1194,12 +1195,8 @@ static void iwl_irq_tasklet(struct iwl_priv *priv) 
	if (inta & CSR_INT_BIT_WAKEUP) {

		IWL_DEBUG_ISR(priv, "Wakeup interrupt\n");

		iwl_rx_queue_update_write_ptr(priv, &priv->rxq);

		iwl_txq_update_write_ptr(priv, &priv->txq[0]);

		iwl_txq_update_write_ptr(priv, &priv->txq[1]);

		iwl_txq_update_write_ptr(priv, &priv->txq[2]);

		iwl_txq_update_write_ptr(priv, &priv->txq[3]);

		iwl_txq_update_write_ptr(priv, &priv->txq[4]);

		iwl_txq_update_write_ptr(priv, &priv->txq[5]);

		for (i = 0; i < priv->hw_params.max_txq_num; i++)

			iwl_txq_update_write_ptr(priv, &priv->txq[i]);



		priv->isr_stats.wakeup++;