tree: https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git master head: 4b6c093e21d36bede0fd88fd0aeb3b03647260e4 commit: 4f0bce1c8888245e006f8c88f44b7419b47a1b4b mt76: mt7615: implement testmode support date: 4 weeks ago config: microblaze-randconfig-r006-20200816 (attached as .config) compiler: microblaze-linux-gcc (GCC) 9.3.0 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 git checkout 4f0bce1c8888245e006f8c88f44b7419b47a1b4b # save the attached .config to linux build tree COMPILER_INSTALL_PATH=$HOME/0day COMPILER=gcc-9.3.0 make.cross ARCH=microblaze 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 >>): drivers/net/wireless/mediatek/mt76/mt7615/testmode.c: In function 'mt7615_tm_set_tx_power': 83 | int index; | ^~~~~ # https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit... git remote add linus https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git git fetch --no-tags linus master git checkout 4f0bce1c8888245e006f8c88f44b7419b47a1b4b vim +/index +83 drivers/net/wireless/mediatek/mt76/mt7615/testmode.c 46 47 static int 48 mt7615_tm_set_tx_power(struct mt7615_phy *phy) 49 { 50 struct mt7615_dev *dev = phy->dev; 51 struct mt76_phy *mphy = phy->mt76; 52 int i, ret, n_chains = hweight8(mphy->antenna_mask); 53 struct cfg80211_chan_def *chandef = &mphy->chandef; 54 int freq = chandef->center_freq1, len, target_chains; 55 u8 *data, *eep = (u8 *)dev->mt76.eeprom.data; 56 enum nl80211_band band = chandef->chan->band; 57 struct sk_buff *skb; 58 struct { 59 u8 center_chan; 60 u8 dbdc_idx; 61 u8 band; 62 u8 rsv; 63 } __packed req_hdr = { 64 .center_chan = ieee80211_frequency_to_channel(freq), 65 .band = band, 66 .dbdc_idx = phy != &dev->phy, 67 }; 68 u8 *tx_power = NULL; 69 70 if (dev->mt76.test.state != MT76_TM_STATE_OFF) 71 tx_power = dev->mt76.test.tx_power; 72 73 len = sizeof(req_hdr) + MT7615_EE_MAX - MT_EE_NIC_CONF_0; 74 skb = mt76_mcu_msg_alloc(&dev->mt76, NULL, sizeof(req_hdr) + len); 75 if (!skb) 76 return -ENOMEM; 77 78 skb_put_data(skb, &req_hdr, sizeof(req_hdr)); 79 data = skb_put_data(skb, eep + MT_EE_NIC_CONF_0, len); 80 81 target_chains = mt7615_ext_pa_enabled(dev, band) ? 1 : n_chains; 82 for (i = 0; i < target_chains; i++) { 84 85 ret = mt7615_eeprom_get_target_power_index(dev, chandef->chan, i); 86 if (ret < 0) 87 return -EINVAL; 88 89 index = ret - MT_EE_NIC_CONF_0; 90 if (tx_power && tx_power[i]) 91 data[ret - MT_EE_NIC_CONF_0] = tx_power[i]; 92 } 93 94 return __mt76_mcu_skb_send_msg(&dev->mt76, skb, 95 MCU_EXT_CMD_SET_TX_POWER_CTRL, false); 96 } 97 --- 0-DAY CI Kernel Test Service, Intel Corporation https://lists.01.org/hyperkitty/list/kbuild-all@lists.01.org