From 588d932044169979bf028eab2155f9acd1d0418d Mon Sep 17 00:00:00 2001 From: Emmanuel Grumbach Date: Mon, 28 May 2012 16:33:48 +0300 Subject: [PATCH] iwlwifi: SCD_INT_MSK is obsolete - don't update it The scheduler can issue an interrupt when moving the read pointer. To get this interrupt, the driver needs to configure what queue can issue an interrupt when its read pointer moves in the scheduler: this is the SCD_INT_MSK. The driver also needs to enable the interrupt in CSR_INT_MASK (bit CSR_INT_BIT_SCD). Since we don't enable the scheduler interrupt in CSR_INT_MASK, there is no point in requesting an interrupt from the scheduler: it will be masked anyway. So don't configure the scheduler to issue interrupts at all. Signed-off-by: Emmanuel Grumbach Signed-off-by: Johannes Berg --- drivers/net/wireless/iwlwifi/pcie/trans.c | 3 --- drivers/net/wireless/iwlwifi/pcie/tx.c | 4 ---- 2 files changed, 7 deletions(-) diff --git a/drivers/net/wireless/iwlwifi/pcie/trans.c b/drivers/net/wireless/iwlwifi/pcie/trans.c index a19ce40..a267fda 100644 --- a/drivers/net/wireless/iwlwifi/pcie/trans.c +++ b/drivers/net/wireless/iwlwifi/pcie/trans.c @@ -1082,9 +1082,6 @@ static void iwl_tx_start(struct iwl_trans *trans) SCD_QUEUE_CTX_REG2_FRAME_LIMIT_MSK)); } - iwl_write_prph(trans, SCD_INTERRUPT_MASK, - IWL_MASK(0, trans->cfg->base_params->num_of_queues)); - /* Activate all Tx DMA/FIFO channels */ iwl_trans_txq_set_sched(trans, IWL_MASK(0, 7)); diff --git a/drivers/net/wireless/iwlwifi/pcie/tx.c b/drivers/net/wireless/iwlwifi/pcie/tx.c index 583451c..8a331a9 100644 --- a/drivers/net/wireless/iwlwifi/pcie/tx.c +++ b/drivers/net/wireless/iwlwifi/pcie/tx.c @@ -480,8 +480,6 @@ void iwl_trans_pcie_tx_agg_setup(struct iwl_trans *trans, int txq_id, int fifo, ((frame_limit << SCD_QUEUE_CTX_REG2_FRAME_LIMIT_POS) & SCD_QUEUE_CTX_REG2_FRAME_LIMIT_MSK)); - iwl_set_bits_prph(trans, SCD_INTERRUPT_MASK, (1 << txq_id)); - /* Set up Status area in SRAM, map to Tx DMA/FIFO, activate the queue */ iwl_trans_tx_queue_set_status(trans, &trans_pcie->txq[txq_id], fifo, true); @@ -506,8 +504,6 @@ void iwl_trans_pcie_tx_agg_disable(struct iwl_trans *trans, int txq_id) trans_pcie->txq[txq_id].q.write_ptr = 0; iwl_trans_set_wr_ptrs(trans, txq_id, 0); - iwl_clear_bits_prph(trans, SCD_INTERRUPT_MASK, BIT(txq_id)); - iwl_trans_tx_queue_set_status(trans, &trans_pcie->txq[txq_id], 0, false); } -- 2.7.4