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iwlwifi: pcie: don't reset TXQ write pointer

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Currently code sets the write pointer when getting the TX queue
allocate response. This causes a redundant interrupt with any actual
change in the pointer. Remove this write altogether.

Fixes: 310181ec34 ("iwlwifi: move to TVQM mode")
Signed-off-by: Sara Sharon <sara.sharon@intel.com>
Signed-off-by: Luca Coelho <luciano.coelho@intel.com>
This commit is contained in:
Sara Sharon
2018-07-19 09:15:11 +03:00
committed by Luca Coelho
parent 0dde2440a7
commit f09450e32a
1 changed files with 1 additions and 2 deletions
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3
drivers/net/wireless/intel/iwlwifi/pcie/tx-gen2.c
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@@ -1228,8 +1228,7 @@ int iwl_trans_pcie_txq_alloc_response(struct iwl_trans *trans,
/* Place first TFD at index corresponding to start sequence number */
txq->read_ptr = wr_ptr;
txq->write_ptr = wr_ptr;
iwl_write_direct32(trans, HBUS_TARG_WRPTR,
(txq->write_ptr) | (qid << 16));
IWL_DEBUG_TX_QUEUES(trans, "Activate queue %d\n", qid);
iwl_free_resp(hcmd);