tree: https://github.com/nbd168/wireless mt76 head: 39e333d657f49619c65b9f5b59aa6405f13abf35 commit: 590e774e4ec95cd17d9c473284b45d2af5c4885a [74/113] mt76: mt7921: remove mcu rate reporting code config: x86_64-randconfig-a004-20211015 (attached as .config) compiler: clang version 14.0.0 (https://github.com/llvm/llvm-project 6069a6a5049497a32a50a49661c2f4169078bdba) reproduce (this is a W=1 build): wget https://raw.githubusercontent.com/intel/lkp-tests/master/sbin/make.cross -O ~/bin/make.cross chmod +x ~/bin/make.cross # https://github.com/nbd168/wireless/commit/590e774e4ec95cd17d9c473284b45d2... git remote add nbd168-wireless https://github.com/nbd168/wireless git fetch --no-tags nbd168-wireless mt76 git checkout 590e774e4ec95cd17d9c473284b45d2af5c4885a # save the attached .config to linux build tree COMPILER_INSTALL_PATH=$HOME/0day COMPILER=clang make.cross W=1 ARCH=x86_64 If you fix the issue, kindly add following tag as appropriate Reported-by: kernel test robot <lkp(a)intel.com&gt; All warnings (new ones prefixed by >>): struct mt7921_phy *phy; ^ drivers/net/wireless/mediatek/mt76/mt7921/mac.c:1345:21: warning: variable 'dev' set but not used [-Wunused-but-set-variable] struct mt7921_dev *dev; ^ 2 warnings generated. vim +/phy +1108 drivers/net/wireless/mediatek/mt76/mt7921/mac.c bcf78d7bff1513 Lorenzo Bianconi 2021-09-04 1077 a7742ef4cd9166 Lorenzo Bianconi 2021-08-16 1078 static void a7742ef4cd9166 Lorenzo Bianconi 2021-08-16 1079 mt7921_mac_tx_free(struct mt7921_dev *dev, struct sk_buff *skb) 163f4d22c118d4 Sean Wang 2021-01-28 1080 { 163f4d22c118d4 Sean Wang 2021-01-28 1081 struct mt7921_tx_free *free = (struct mt7921_tx_free *)skb->data; 163f4d22c118d4 Sean Wang 2021-01-28 1082 struct mt76_dev *mdev = &dev->mt76; 163f4d22c118d4 Sean Wang 2021-01-28 1083 struct mt76_txwi_cache *txwi; 163f4d22c118d4 Sean Wang 2021-01-28 1084 struct ieee80211_sta *sta = NULL; 163f4d22c118d4 Sean Wang 2021-01-28 1085 LIST_HEAD(free_list); 163f4d22c118d4 Sean Wang 2021-01-28 1086 struct sk_buff *tmp; 163f4d22c118d4 Sean Wang 2021-01-28 1087 bool wake = false; 163f4d22c118d4 Sean Wang 2021-01-28 1088 u8 i, count; 163f4d22c118d4 Sean Wang 2021-01-28 1089 163f4d22c118d4 Sean Wang 2021-01-28 1090 /* clean DMA queues and unmap buffers first */ 163f4d22c118d4 Sean Wang 2021-01-28 1091 mt76_queue_tx_cleanup(dev, dev->mphy.q_tx[MT_TXQ_PSD], false); 163f4d22c118d4 Sean Wang 2021-01-28 1092 mt76_queue_tx_cleanup(dev, dev->mphy.q_tx[MT_TXQ_BE], false); 163f4d22c118d4 Sean Wang 2021-01-28 1093 163f4d22c118d4 Sean Wang 2021-01-28 1094 /* TODO: MT_TX_FREE_LATENCY is msdu time from the TXD is queued into PLE, 163f4d22c118d4 Sean Wang 2021-01-28 1095 * to the time ack is received or dropped by hw (air + hw queue time). 163f4d22c118d4 Sean Wang 2021-01-28 1096 * Should avoid accessing WTBL to get Tx airtime, and use it instead. 163f4d22c118d4 Sean Wang 2021-01-28 1097 */ 163f4d22c118d4 Sean Wang 2021-01-28 1098 count = FIELD_GET(MT_TX_FREE_MSDU_CNT, le16_to_cpu(free->ctrl)); 163f4d22c118d4 Sean Wang 2021-01-28 1099 for (i = 0; i < count; i++) { 163f4d22c118d4 Sean Wang 2021-01-28 1100 u32 msdu, info = le32_to_cpu(free->info[i]); 163f4d22c118d4 Sean Wang 2021-01-28 1101 u8 stat; 163f4d22c118d4 Sean Wang 2021-01-28 1102 163f4d22c118d4 Sean Wang 2021-01-28 1103 /* 1'b1: new wcid pair. 163f4d22c118d4 Sean Wang 2021-01-28 1104 * 1'b0: msdu_id with the same 'wcid pair' as above. 163f4d22c118d4 Sean Wang 2021-01-28 1105 */ 163f4d22c118d4 Sean Wang 2021-01-28 1106 if (info & MT_TX_FREE_PAIR) { 163f4d22c118d4 Sean Wang 2021-01-28 1107 struct mt7921_sta *msta; 163f4d22c118d4 Sean Wang 2021-01-28 @1108 struct mt7921_phy *phy; 163f4d22c118d4 Sean Wang 2021-01-28 1109 struct mt76_wcid *wcid; 163f4d22c118d4 Sean Wang 2021-01-28 1110 u16 idx; 163f4d22c118d4 Sean Wang 2021-01-28 1111 163f4d22c118d4 Sean Wang 2021-01-28 1112 count++; 163f4d22c118d4 Sean Wang 2021-01-28 1113 idx = FIELD_GET(MT_TX_FREE_WLAN_ID, info); 163f4d22c118d4 Sean Wang 2021-01-28 1114 wcid = rcu_dereference(dev->mt76.wcid[idx]); 163f4d22c118d4 Sean Wang 2021-01-28 1115 sta = wcid_to_sta(wcid); 163f4d22c118d4 Sean Wang 2021-01-28 1116 if (!sta) 163f4d22c118d4 Sean Wang 2021-01-28 1117 continue; 163f4d22c118d4 Sean Wang 2021-01-28 1118 163f4d22c118d4 Sean Wang 2021-01-28 1119 msta = container_of(wcid, struct mt7921_sta, wcid); 163f4d22c118d4 Sean Wang 2021-01-28 1120 phy = msta->vif->phy; 163f4d22c118d4 Sean Wang 2021-01-28 1121 spin_lock_bh(&dev->sta_poll_lock); 163f4d22c118d4 Sean Wang 2021-01-28 1122 if (list_empty(&msta->poll_list)) 163f4d22c118d4 Sean Wang 2021-01-28 1123 list_add_tail(&msta->poll_list, &dev->sta_poll_list); 163f4d22c118d4 Sean Wang 2021-01-28 1124 spin_unlock_bh(&dev->sta_poll_lock); 163f4d22c118d4 Sean Wang 2021-01-28 1125 continue; 163f4d22c118d4 Sean Wang 2021-01-28 1126 } 163f4d22c118d4 Sean Wang 2021-01-28 1127 163f4d22c118d4 Sean Wang 2021-01-28 1128 msdu = FIELD_GET(MT_TX_FREE_MSDU_ID, info); 163f4d22c118d4 Sean Wang 2021-01-28 1129 stat = FIELD_GET(MT_TX_FREE_STATUS, info); 163f4d22c118d4 Sean Wang 2021-01-28 1130 d089692bc7938a Lorenzo Bianconi 2021-04-20 1131 txwi = mt76_token_release(mdev, msdu, &wake); 163f4d22c118d4 Sean Wang 2021-01-28 1132 if (!txwi) 163f4d22c118d4 Sean Wang 2021-01-28 1133 continue; 163f4d22c118d4 Sean Wang 2021-01-28 1134 bcf78d7bff1513 Lorenzo Bianconi 2021-09-04 1135 mt7921_txwi_free(dev, txwi, sta, stat, &free_list); 163f4d22c118d4 Sean Wang 2021-01-28 1136 } 163f4d22c118d4 Sean Wang 2021-01-28 1137 d089692bc7938a Lorenzo Bianconi 2021-04-20 1138 if (wake) d089692bc7938a Lorenzo Bianconi 2021-04-20 1139 mt76_set_tx_blocked(&dev->mt76, false); 163f4d22c118d4 Sean Wang 2021-01-28 1140 163f4d22c118d4 Sean Wang 2021-01-28 1141 napi_consume_skb(skb, 1); 163f4d22c118d4 Sean Wang 2021-01-28 1142 163f4d22c118d4 Sean Wang 2021-01-28 1143 list_for_each_entry_safe(skb, tmp, &free_list, list) { 163f4d22c118d4 Sean Wang 2021-01-28 1144 skb_list_del_init(skb); 163f4d22c118d4 Sean Wang 2021-01-28 1145 napi_consume_skb(skb, 1); 163f4d22c118d4 Sean Wang 2021-01-28 1146 } 1d8efc741df80b Sean Wang 2021-01-28 1147 1d8efc741df80b Sean Wang 2021-01-28 1148 mt7921_mac_sta_poll(dev); 1d8efc741df80b Sean Wang 2021-01-28 1149 mt76_worker_schedule(&dev->mt76.tx_worker); 163f4d22c118d4 Sean Wang 2021-01-28 1150 } 163f4d22c118d4 Sean Wang 2021-01-28 1151 :::::: The code at line 1108 was first introduced by commit :::::: 163f4d22c118d4eb9e275bf9ee1577c0d14b3208 mt76: mt7921: add MAC support :::::: TO: Sean Wang <sean.wang(a)mediatek.com&gt; :::::: CC: Felix Fietkau <nbd(a)nbd.name&gt; --- 0-DAY CI Kernel Test Service, Intel Corporation https://lists.01.org/hyperkitty/list/kbuild-all@lists.01.org