diff options
| author | Emmanuel Grumbach <emmanuel.grumbach@intel.com> | 2015-11-24 14:55:18 +0200 |
|---|---|---|
| committer | Emmanuel Grumbach <emmanuel.grumbach@intel.com> | 2015-12-13 08:52:53 +0200 |
| commit | 156f92f2b4711a0e8478c596557a1bd5ca69b02d (patch) | |
| tree | 47e6d2c91a114abb36459a800733557e2bba65e3 /drivers/net/wireless/intel/iwlwifi/mvm/sta.c | |
| parent | dcbb4746286abe50300deef1858cfd6dc1b9c198 (diff) | |
iwlwifi: block the queues when we send ADD_STA for uAPSD
We send an ADD_STA to instruct the firmware to release
frames despite the peer being in PS.
Since the ADD_STA command and the Tx frame that comes
immediately afterwards can be reordered by the DMA engine,
we need to block the Tx queues until the firmware replies
with the ADD_STA response.
Signed-off-by: Emmanuel Grumbach <emmanuel.grumbach@intel.com>
Diffstat (limited to 'drivers/net/wireless/intel/iwlwifi/mvm/sta.c')
| -rw-r--r-- | drivers/net/wireless/intel/iwlwifi/mvm/sta.c | 7 |
1 files changed, 6 insertions, 1 deletions
diff --git a/drivers/net/wireless/intel/iwlwifi/mvm/sta.c b/drivers/net/wireless/intel/iwlwifi/mvm/sta.c index dc3206a353e1..566b65944fb8 100644 --- a/drivers/net/wireless/intel/iwlwifi/mvm/sta.c +++ b/drivers/net/wireless/intel/iwlwifi/mvm/sta.c @@ -1708,7 +1708,12 @@ void iwl_mvm_sta_modify_sleep_tx_count(struct iwl_mvm *mvm, cmd.sleep_state_flags |= cpu_to_le16(STA_SLEEP_STATE_UAPSD); } - ret = iwl_mvm_send_cmd_pdu(mvm, ADD_STA, CMD_ASYNC, sizeof(cmd), &cmd); + /* block the Tx queues until the FW updated the sleep Tx count */ + iwl_trans_block_txq_ptrs(mvm->trans, true); + + ret = iwl_mvm_send_cmd_pdu(mvm, ADD_STA, + CMD_ASYNC | CMD_WANT_ASYNC_CALLBACK, + sizeof(cmd), &cmd); if (ret) IWL_ERR(mvm, "Failed to send ADD_STA command (%d)\n", ret); } |