iwlwifi: mvm: send LQ command always ASYNC

The only place where the command was sent as SYNC is during
init and this is not really critical. This change is required
for replacing RS mutex with a spinlock (in the subsequent patch),
since SYNC comamnd requres sleeping and thus the flow cannot
be done when holding a spinlock.
Signed-off-by: Gregory Greenman <gregory.greenman@intel.com>
Signed-off-by: Luca Coelho <luciano.coelho@intel.com>
Signed-off-by: Johannes Berg <johannes.berg@intel.com>

drivers/net/wireless/intel/iwlwifi/mvm/mvm.h

@@ -1813,7 +1813,7 @@ iwl_mvm_vif_dbgfs_clean(struct iwl_mvm *mvm, struct ieee80211_vif *vif)
 #endif /* CONFIG_IWLWIFI_DEBUGFS */
 
 /* rate scaling */
-int iwl_mvm_send_lq_cmd(struct iwl_mvm *mvm, struct iwl_lq_cmd *lq, bool sync);
+int iwl_mvm_send_lq_cmd(struct iwl_mvm *mvm, struct iwl_lq_cmd *lq);
 void iwl_mvm_update_frame_stats(struct iwl_mvm *mvm, u32 rate, bool agg);
 int rs_pretty_print_rate(char *buf, int bufsz, const u32 rate);
 void rs_update_last_rssi(struct iwl_mvm *mvm,

drivers/net/wireless/intel/iwlwifi/mvm/rs.c

@@ -1328,7 +1328,7 @@ static void __iwl_mvm_rs_tx_status(struct iwl_mvm *mvm,
 			IWL_DEBUG_RATE(mvm,
 				       "Too many rates mismatch. Send sync LQ. rs_state %d\n",
 				       lq_sta->rs_state);
-			iwl_mvm_send_lq_cmd(mvm, &lq_sta->lq, false);
+			iwl_mvm_send_lq_cmd(mvm, &lq_sta->lq);
 		}
 		/* Regardless, ignore this status info for outdated rate */
 		return;
@@ -1390,7 +1390,8 @@ static void __iwl_mvm_rs_tx_status(struct iwl_mvm *mvm,
 		if (info->status.ampdu_ack_len == 0)
 			info->status.ampdu_len = 1;
 
-		rs_collect_tlc_data(mvm, mvmsta, tid, curr_tbl, tx_resp_rate.index,
+		rs_collect_tlc_data(mvm, mvmsta, tid, curr_tbl,
+				    tx_resp_rate.index,
 				    info->status.ampdu_len,
 				    info->status.ampdu_ack_len);
 
@@ -1833,7 +1834,7 @@ static void rs_update_rate_tbl(struct iwl_mvm *mvm,
 			       struct iwl_scale_tbl_info *tbl)
 {
 	rs_fill_lq_cmd(mvm, sta, lq_sta, &tbl->rate);
-	iwl_mvm_send_lq_cmd(mvm, &lq_sta->lq, false);
+	iwl_mvm_send_lq_cmd(mvm, &lq_sta->lq);
 }
 
 static bool rs_tweak_rate_tbl(struct iwl_mvm *mvm,
@@ -2935,7 +2936,7 @@ void rs_update_last_rssi(struct iwl_mvm *mvm,
 static void rs_initialize_lq(struct iwl_mvm *mvm,
 			     struct ieee80211_sta *sta,
 			     struct iwl_lq_sta *lq_sta,
-			     enum nl80211_band band, bool update)
+			     enum nl80211_band band)
 {
 	struct iwl_scale_tbl_info *tbl;
 	struct rs_rate *rate;
@@ -2965,7 +2966,7 @@ static void rs_initialize_lq(struct iwl_mvm *mvm,
 	rs_set_expected_tpt_table(lq_sta, tbl);
 	rs_fill_lq_cmd(mvm, sta, lq_sta, rate);
 	/* TODO restore station should remember the lq cmd */
-	iwl_mvm_send_lq_cmd(mvm, &lq_sta->lq, !update);
+	iwl_mvm_send_lq_cmd(mvm, &lq_sta->lq);
 }
 
 static void rs_drv_get_rate(void *mvm_r, struct ieee80211_sta *sta,
@@ -3214,7 +3215,7 @@ void iwl_mvm_update_frame_stats(struct iwl_mvm *mvm, u32 rate, bool agg)
  * Called after adding a new station to initialize rate scaling
  */
 static void rs_drv_rate_init(struct iwl_mvm *mvm, struct ieee80211_sta *sta,
-			     enum nl80211_band band, bool update)
+			     enum nl80211_band band)
 {
 	int i, j;
 	struct ieee80211_hw *hw = mvm->hw;
@@ -3294,7 +3295,7 @@ static void rs_drv_rate_init(struct iwl_mvm *mvm, struct ieee80211_sta *sta,
 #ifdef CONFIG_IWLWIFI_DEBUGFS
 	iwl_mvm_reset_frame_stats(mvm);
 #endif
-	rs_initialize_lq(mvm, sta, lq_sta, band, update);
+	rs_initialize_lq(mvm, sta, lq_sta, band);
 }
 
 static void rs_drv_rate_update(void *mvm_r,
@@ -3608,7 +3609,7 @@ static void rs_set_lq_ss_params(struct iwl_mvm *mvm,
 
 		bfersta_ss_params &= ~LQ_SS_BFER_ALLOWED;
 		bfersta_lq_cmd->ss_params = cpu_to_le32(bfersta_ss_params);
-		iwl_mvm_send_lq_cmd(mvm, bfersta_lq_cmd, false);
+		iwl_mvm_send_lq_cmd(mvm, bfersta_lq_cmd);
 
 		ss_params |= LQ_SS_BFER_ALLOWED;
 		IWL_DEBUG_RATE(mvm,
@@ -3774,7 +3775,7 @@ static void rs_program_fix_rate(struct iwl_mvm *mvm,
 
 	if (lq_sta->pers.dbg_fixed_rate) {
 		rs_fill_lq_cmd(mvm, NULL, lq_sta, NULL);
-		iwl_mvm_send_lq_cmd(lq_sta->pers.drv, &lq_sta->lq, false);
+		iwl_mvm_send_lq_cmd(lq_sta->pers.drv, &lq_sta->lq);
 	}
 }
 
@@ -4177,7 +4178,7 @@ void iwl_mvm_rs_rate_init(struct iwl_mvm *mvm, struct ieee80211_sta *sta,
 		struct iwl_mvm_sta *mvmsta = iwl_mvm_sta_from_mac80211(sta);
 
 		mutex_lock(&mvmsta->lq_sta.rs_drv.mutex);
-		rs_drv_rate_init(mvm, sta, band, update);
+		rs_drv_rate_init(mvm, sta, band);
 		mutex_unlock(&mvmsta->lq_sta.rs_drv.mutex);
 	}
 }
@@ -4209,7 +4210,7 @@ static int rs_drv_tx_protection(struct iwl_mvm *mvm, struct iwl_mvm_sta *mvmsta,
 			lq->flags &= ~LQ_FLAG_USE_RTS_MSK;
 	}
 
-	return iwl_mvm_send_lq_cmd(mvm, lq, false);
+	return iwl_mvm_send_lq_cmd(mvm, lq);
 }
 
 /**

drivers/net/wireless/intel/iwlwifi/mvm/sta.c

@@ -2978,7 +2978,7 @@ int iwl_mvm_sta_tx_agg_oper(struct iwl_mvm *mvm, struct ieee80211_vif *vif,
 	IWL_DEBUG_HT(mvm, "Tx aggregation enabled on ra = %pM tid = %d\n",
 		     sta->addr, tid);
 
-	return iwl_mvm_send_lq_cmd(mvm, &mvmsta->lq_sta.rs_drv.lq, false);
+	return iwl_mvm_send_lq_cmd(mvm, &mvmsta->lq_sta.rs_drv.lq);
 }
 
 static void iwl_mvm_unreserve_agg_queue(struct iwl_mvm *mvm,

drivers/net/wireless/intel/iwlwifi/mvm/utils.c

@@ -653,12 +653,12 @@ int iwl_mvm_reconfig_scd(struct iwl_mvm *mvm, int queue, int fifo, int sta_id,
  * this case to clear the state indicating that station creation is in
  * progress.
  */
-int iwl_mvm_send_lq_cmd(struct iwl_mvm *mvm, struct iwl_lq_cmd *lq, bool sync)
+int iwl_mvm_send_lq_cmd(struct iwl_mvm *mvm, struct iwl_lq_cmd *lq)
 {
 	struct iwl_host_cmd cmd = {
 		.id = LQ_CMD,
 		.len = { sizeof(struct iwl_lq_cmd), },
-		.flags = sync ? 0 : CMD_ASYNC,
+		.flags = CMD_ASYNC,
 		.data = { lq, },
 	};