tree:   https://github.com/nbd168/wireless mt76
head:   f12758f6f929dbcd37abdb1d91d245539eca48f8
commit: 8aa2c6f4714ecccbf1e149c6ff2fde5284e03be7 [13/89] mt76: mt7915: support 32 station interfaces
config: powerpc-randconfig-r034-20201209 (attached as .config)
compiler: clang version 12.0.0 (https://github.com/llvm/llvm-project 1968804ac726e7674d5de22bc2204b45857da344)
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://github.com/nbd168/wireless/commit/8aa2c6f4714ecccbf1e149c6ff2fde5284e03be7
        git remote add nbd168-wireless https://github.com/nbd168/wireless
        git fetch --no-tags nbd168-wireless mt76
        git checkout 8aa2c6f4714ecccbf1e149c6ff2fde5284e03be7
        # 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 <lkp@intel.com>

All errors (new ones prefixed by >>):

>> drivers/net/wireless/mediatek/mt76/mt7915/init.c:203:2: error: expected expression
           }, {
           ^
>> drivers/net/wireless/mediatek/mt76/mt7915/init.c:212:15: error: invalid application of 'sizeof' to an incomplete type 'const struct ieee80211_iface_limit []'
                   .n_limits = ARRAY_SIZE(if_limits),
                               ^~~~~~~~~~~~~~~~~~~~~
   include/linux/kernel.h:48:32: note: expanded from macro 'ARRAY_SIZE'
   #define ARRAY_SIZE(arr) (sizeof(arr) / sizeof((arr)[0]) + __must_be_array(arr))
                                  ^~~~~
>> drivers/net/wireless/mediatek/mt76/mt7915/init.c:259:32: error: invalid application of 'sizeof' to an incomplete type 'const struct ieee80211_iface_combination []'
           wiphy->n_iface_combinations = ARRAY_SIZE(if_comb);
                                         ^~~~~~~~~~~~~~~~~~~
   include/linux/kernel.h:48:32: note: expanded from macro 'ARRAY_SIZE'
   #define ARRAY_SIZE(arr) (sizeof(arr) / sizeof((arr)[0]) + __must_be_array(arr))
                                  ^~~~~
   3 errors generated.

vim +203 drivers/net/wireless/mediatek/mt76/mt7915/init.c

   192	
   193	static const struct ieee80211_iface_limit if_limits[] = {
   194		{
   195			.max = 1,
   196			.types = BIT(NL80211_IFTYPE_ADHOC)
   197		}, {
   198			.max = 16,
   199			.types = BIT(NL80211_IFTYPE_AP) |
   200	#ifdef CONFIG_MAC80211_MESH
   201				 BIT(NL80211_IFTYPE_MESH_POINT)
   202	#endif
 > 203		}, {
   204			.max = MT7915_MAX_INTERFACES,
   205			.types = BIT(NL80211_IFTYPE_STATION)
   206		}
   207	};
   208	
   209	static const struct ieee80211_iface_combination if_comb[] = {
   210		{
   211			.limits = if_limits,
 > 212			.n_limits = ARRAY_SIZE(if_limits),
   213			.max_interfaces = MT7915_MAX_INTERFACES,
   214			.num_different_channels = 1,
   215			.beacon_int_infra_match = true,
   216			.radar_detect_widths = BIT(NL80211_CHAN_WIDTH_20_NOHT) |
   217					       BIT(NL80211_CHAN_WIDTH_20) |
   218					       BIT(NL80211_CHAN_WIDTH_40) |
   219					       BIT(NL80211_CHAN_WIDTH_80) |
   220					       BIT(NL80211_CHAN_WIDTH_160) |
   221					       BIT(NL80211_CHAN_WIDTH_80P80),
   222		}
   223	};
   224	
   225	static void
   226	mt7915_regd_notifier(struct wiphy *wiphy,
   227			     struct regulatory_request *request)
   228	{
   229		struct ieee80211_hw *hw = wiphy_to_ieee80211_hw(wiphy);
   230		struct mt7915_dev *dev = mt7915_hw_dev(hw);
   231		struct mt76_phy *mphy = hw->priv;
   232		struct mt7915_phy *phy = mphy->priv;
   233		struct cfg80211_chan_def *chandef = &mphy->chandef;
   234	
   235		dev->mt76.region = request->dfs_region;
   236	
   237		if (!(chandef->chan->flags & IEEE80211_CHAN_RADAR))
   238			return;
   239	
   240		mt7915_dfs_init_radar_detector(phy);
   241	}
   242	
   243	static void
   244	mt7915_init_wiphy(struct ieee80211_hw *hw)
   245	{
   246		struct mt7915_phy *phy = mt7915_hw_phy(hw);
   247		struct wiphy *wiphy = hw->wiphy;
   248	
   249		hw->queues = 4;
   250		hw->max_rx_aggregation_subframes = IEEE80211_MAX_AMPDU_BUF;
   251		hw->max_tx_aggregation_subframes = IEEE80211_MAX_AMPDU_BUF;
   252	
   253		phy->slottime = 9;
   254	
   255		hw->sta_data_size = sizeof(struct mt7915_sta);
   256		hw->vif_data_size = sizeof(struct mt7915_vif);
   257	
   258		wiphy->iface_combinations = if_comb;
 > 259		wiphy->n_iface_combinations = ARRAY_SIZE(if_comb);
   260		wiphy->reg_notifier = mt7915_regd_notifier;
   261		wiphy->flags |= WIPHY_FLAG_HAS_CHANNEL_SWITCH;
   262	
   263		wiphy_ext_feature_set(wiphy, NL80211_EXT_FEATURE_VHT_IBSS);
   264	
   265		ieee80211_hw_set(hw, HAS_RATE_CONTROL);
   266		ieee80211_hw_set(hw, SUPPORTS_TX_ENCAP_OFFLOAD);
   267	
   268		hw->max_tx_fragments = 4;
   269	}
   270	

---
0-DAY CI Kernel Test Service, Intel Corporation
https://lists.01.org/hyperkitty/list/kbuild-all(a)lists.01.org