tree: https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git master head: 55f62bc873477dae2c45bbbc30b86cf3e0982f3b commit: 5c14a5f944b91371961548b1907802f74a4d2e5c mt76: mt7921: introduce mt7921e support date: 3 weeks ago config: powerpc-randconfig-r025-20210222 (attached as .config) compiler: clang version 12.0.0 (https://github.com/llvm/llvm-project c9439ca36342fb6013187d0a69aef92736951476) 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 # install powerpc cross compiling tool for clang build # apt-get install binutils-powerpc-linux-gnu # https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=5c14a5f944b91371961548b1907802f74a4d2e5c git remote add linus https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git git fetch --no-tags linus master git checkout 5c14a5f944b91371961548b1907802f74a4d2e5c # save the attached .config to linux build tree COMPILER_INSTALL_PATH=$HOME/0day COMPILER=clang make.cross ARCH=powerpc
If you fix the issue, kindly add following tag as appropriate Reported-by: kernel test robot <[email protected]> All warnings (new ones prefixed by >>): >> drivers/net/wireless/mediatek/mt76/mt7921/mcu.c:520:3: warning: variable >> 'stats' is uninitialized when used here [-Wuninitialized] stats->tx_rate = rate; ^~~~~ drivers/net/wireless/mediatek/mt76/mt7921/mcu.c:512:32: note: initialize the variable 'stats' to silence this warning struct mt7921_sta_stats *stats; ^ = NULL 1 warning generated. vim +/stats +520 drivers/net/wireless/mediatek/mt76/mt7921/mcu.c 1c099ab44727c8 Sean Wang 2021-01-28 500 1c099ab44727c8 Sean Wang 2021-01-28 501 static void 1c099ab44727c8 Sean Wang 2021-01-28 502 mt7921_mcu_tx_rate_report(struct mt7921_dev *dev, struct sk_buff *skb, 1c099ab44727c8 Sean Wang 2021-01-28 503 u16 wlan_idx) 1c099ab44727c8 Sean Wang 2021-01-28 504 { 1c099ab44727c8 Sean Wang 2021-01-28 505 struct mt7921_mcu_wlan_info_event *wtbl_info = 1c099ab44727c8 Sean Wang 2021-01-28 506 (struct mt7921_mcu_wlan_info_event *)(skb->data); 1c099ab44727c8 Sean Wang 2021-01-28 507 struct rate_info rate = {}; 1c099ab44727c8 Sean Wang 2021-01-28 508 u8 curr_idx = wtbl_info->rate_info.rate_idx; 1c099ab44727c8 Sean Wang 2021-01-28 509 u16 curr = le16_to_cpu(wtbl_info->rate_info.rate[curr_idx]); 1c099ab44727c8 Sean Wang 2021-01-28 510 struct mt7921_mcu_peer_cap peer = wtbl_info->peer_cap; 1c099ab44727c8 Sean Wang 2021-01-28 511 struct mt76_phy *mphy = &dev->mphy; 1c099ab44727c8 Sean Wang 2021-01-28 512 struct mt7921_sta_stats *stats; 1c099ab44727c8 Sean Wang 2021-01-28 513 struct mt7921_sta *msta; 1c099ab44727c8 Sean Wang 2021-01-28 514 struct mt76_wcid *wcid; 1c099ab44727c8 Sean Wang 2021-01-28 515 1c099ab44727c8 Sean Wang 2021-01-28 516 if (wlan_idx >= MT76_N_WCIDS) 1c099ab44727c8 Sean Wang 2021-01-28 517 return; 1c099ab44727c8 Sean Wang 2021-01-28 518 wcid = rcu_dereference(dev->mt76.wcid[wlan_idx]); 1c099ab44727c8 Sean Wang 2021-01-28 519 if (!wcid) { 1c099ab44727c8 Sean Wang 2021-01-28 @520 stats->tx_rate = rate; 1c099ab44727c8 Sean Wang 2021-01-28 521 return; 1c099ab44727c8 Sean Wang 2021-01-28 522 } 1c099ab44727c8 Sean Wang 2021-01-28 523 1c099ab44727c8 Sean Wang 2021-01-28 524 msta = container_of(wcid, struct mt7921_sta, wcid); 1c099ab44727c8 Sean Wang 2021-01-28 525 stats = &msta->stats; 1c099ab44727c8 Sean Wang 2021-01-28 526 1c099ab44727c8 Sean Wang 2021-01-28 527 /* current rate */ 1c099ab44727c8 Sean Wang 2021-01-28 528 mt7921_mcu_tx_rate_parse(mphy, &peer, &rate, curr); 1c099ab44727c8 Sean Wang 2021-01-28 529 stats->tx_rate = rate; 1c099ab44727c8 Sean Wang 2021-01-28 530 } 1c099ab44727c8 Sean Wang 2021-01-28 531 :::::: The code at line 520 was first introduced by commit :::::: 1c099ab44727c8e42fe4de4d91b53cec3ef02860 mt76: mt7921: add MCU support :::::: TO: Sean Wang <[email protected]> :::::: CC: Felix Fietkau <[email protected]> --- 0-DAY CI Kernel Test Service, Intel Corporation https://lists.01.org/hyperkitty/list/[email protected]
.config.gz
Description: application/gzip
