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Commit 42646ba0 authored by Johannes Berg's avatar Johannes Berg Committed by Emmanuel Grumbach
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iwlwifi: pcie: fix TX queue locking 



When updating the write pointer, the TX queue should be locked
to get consistent state, fix that in the interrupt handler.

Signed-off-by: default avatarJohannes Berg <johannes.berg@intel.com>
Signed-off-by: default avatarEmmanuel Grumbach <emmanuel.grumbach@intel.com>
parent 43aa616f

drivers/net/wireless/iwlwifi/pcie/rx.c

+4 −1
Original line number Diff line number Diff line
@@ -1042,8 +1042,11 @@ irqreturn_t iwl_pcie_irq_handler(int irq, void *dev_id) 
	if (inta & CSR_INT_BIT_WAKEUP) {

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

		iwl_pcie_rxq_check_wrptr(trans);

		for (i = 0; i < trans->cfg->base_params->num_of_queues; i++)

		for (i = 0; i < trans->cfg->base_params->num_of_queues; i++) {

			spin_lock(&trans_pcie->txq[i].lock);

			iwl_pcie_txq_inc_wr_ptr(trans, &trans_pcie->txq[i]);

			spin_unlock(&trans_pcie->txq[i].lock);

		}



		isr_stats->wakeup++;