[kbuild-all] [linux-next:master 7901/10701] drivers/net/wireless/mediatek/mt76/mt7603/mac.c:476:10: warning: comparison is always false due to limited range of data type

tree: https://git.kernel.org/pub/scm/linux/kernel/git/next/linux-next.git master head: fb57b1fabcb28f358901b2df90abd2b48abc1ca8 commit: 49e649c3e0a6ec8a12976e331a2c1f29dc7dd3a9 [7901/10701] mt76: adjust wcid size to support new 802.11ax generation config: ia64-allmodconfig (attached as .config) compiler: ia64-linux-gcc (GCC) 9.3.0 reproduce: wget https://raw.githubusercontent.com/intel/lkp-tests/master/sbin/make.cross -O ~/bin/make.cross chmod +x ~/bin/make.cross git checkout 49e649c3e0a6ec8a12976e331a2c1f29dc7dd3a9 # save the attached .config to linux build tree COMPILER_INSTALL_PATH=$HOME/0day COMPILER=gcc-9.3.0 make.cross ARCH=ia64 If you fix the issue, kindly add following tag as appropriate Reported-by: kbuild test robot <lkp(a)intel.com&gt; All warnings (new ones prefixed by >>, old ones prefixed by <<): drivers/net/wireless/mediatek/mt76/mt7603/mac.c: In function 'mt7603_rx_get_wcid': 476 | if (idx >= ARRAY_SIZE(dev->mt76.wcid)) | ^~ drivers/net/wireless/mediatek/mt76/mt7603/mac.c: In function 'mt7603_mac_add_txs': drivers/net/wireless/mediatek/mt76/mt7603/mac.c:1241:12: warning: comparison is always false due to limited range of data type [-Wtype-limits] 1241 | if (wcidx >= ARRAY_SIZE(dev->mt76.wcid)) | ^~ -- In file included from drivers/net/wireless/mediatek/mt76/mt76x02_util.c:8: drivers/net/wireless/mediatek/mt76/mt76x02.h: In function 'mt76x02_rx_get_sta': 249 | if (idx >= ARRAY_SIZE(dev->wcid)) | ^~ -- In file included from drivers/net/wireless/mediatek/mt76/mt76x02_mac.c:7: drivers/net/wireless/mediatek/mt76/mt76x02.h: In function 'mt76x02_rx_get_sta': 249 | if (idx >= ARRAY_SIZE(dev->wcid)) | ^~ drivers/net/wireless/mediatek/mt76/mt76x02_mac.c: In function 'mt76x02_send_tx_status': 564 | if (stat->wcid < ARRAY_SIZE(dev->mt76.wcid)) | ^ -- In file included from drivers/net/wireless/mediatek/mt76/mt76x02_trace.h:10, from drivers/net/wireless/mediatek/mt76/mt76x02_trace.c:10: drivers/net/wireless/mediatek/mt76/mt76x02.h: In function 'mt76x02_rx_get_sta': 249 | if (idx >= ARRAY_SIZE(dev->wcid)) | ^~ In file included from drivers/net/wireless/mediatek/mt76/mt76x02_trace.h:87, from drivers/net/wireless/mediatek/mt76/mt76x02_trace.c:10: include/trace/define_trace.h: At top level: include/trace/define_trace.h:95:42: fatal error: ./mt76x02_trace.h: No such file or directory 95 | #include TRACE_INCLUDE(TRACE_INCLUDE_FILE) | ^ compilation terminated. -- drivers/net/wireless/mediatek/mt76/mt7615/mac.c: In function 'mt7615_rx_get_wcid': 64 | if (idx >= ARRAY_SIZE(dev->mt76.wcid)) | ^~ drivers/net/wireless/mediatek/mt76/mt7615/mac.c: In function 'mt7615_mac_add_txs': drivers/net/wireless/mediatek/mt76/mt7615/mac.c:1305:12: warning: comparison is always false due to limited range of data type [-Wtype-limits] 1305 | if (wcidx >= ARRAY_SIZE(dev->mt76.wcid)) | ^~ -- In file included from drivers/net/wireless/mediatek/mt76/mt76x0/mt76x0.h:20, from drivers/net/wireless/mediatek/mt76/mt76x0/usb.c:10: drivers/net/wireless/mediatek/mt76/mt76x0/../mt76x02.h: In function 'mt76x02_rx_get_sta': 249 | if (idx >= ARRAY_SIZE(dev->wcid)) | ^~ -- In file included from drivers/net/wireless/mediatek/mt76/mt76x0/mt76x0.h:20, from drivers/net/wireless/mediatek/mt76/mt76x0/phy.c:12: drivers/net/wireless/mediatek/mt76/mt76x0/../mt76x02.h: In function 'mt76x02_rx_get_sta': 249 | if (idx >= ARRAY_SIZE(dev->wcid)) | ^~ In file included from drivers/net/wireless/mediatek/mt76/mt76x0/phy.c:16: At top level: drivers/net/wireless/mediatek/mt76/mt76x0/initvals.h:218:35: warning: 'mt76x0_dcoc_tab' defined but not used [-Wunused-const-variable=] 218 | static const struct mt76_reg_pair mt76x0_dcoc_tab[] = { | ^~~~~~~~~~~~~~~ drivers/net/wireless/mediatek/mt76/mt76x0/initvals.h:86:35: warning: 'mt76x0_bbp_init_tab' defined but not used [-Wunused-const-variable=] 86 | static const struct mt76_reg_pair mt76x0_bbp_init_tab[] = { | ^~~~~~~~~~~~~~~~~~~ drivers/net/wireless/mediatek/mt76/mt76x0/initvals.h:48:35: warning: 'mt76x0_mac_reg_table' defined but not used [-Wunused-const-variable=] 48 | static const struct mt76_reg_pair mt76x0_mac_reg_table[] = { | ^~~~~~~~~~~~~~~~~~~~ drivers/net/wireless/mediatek/mt76/mt76x0/initvals.h:14:35: warning: 'common_mac_reg_table' defined but not used [-Wunused-const-variable=] 14 | static const struct mt76_reg_pair common_mac_reg_table[] = { | ^~~~~~~~~~~~~~~~~~~~ -- In file included from drivers/net/wireless/mediatek/mt76/mt76x2/mt76x2.h:23, from drivers/net/wireless/mediatek/mt76/mt76x2/eeprom.c:9: drivers/net/wireless/mediatek/mt76/mt76x2/../mt76x02.h: In function 'mt76x02_rx_get_sta': 249 | if (idx >= ARRAY_SIZE(dev->wcid)) | ^~ vim +476 drivers/net/wireless/mediatek/mt76/mt7603/mac.c ea565833fd7848 Felix Fietkau 2019-09-04 469 c8846e1015022d Felix Fietkau 2018-11-06 470 static struct mt76_wcid * c8846e1015022d Felix Fietkau 2018-11-06 471 mt7603_rx_get_wcid(struct mt7603_dev *dev, u8 idx, bool unicast) c8846e1015022d Felix Fietkau 2018-11-06 472 { c8846e1015022d Felix Fietkau 2018-11-06 473 struct mt7603_sta *sta; c8846e1015022d Felix Fietkau 2018-11-06 474 struct mt76_wcid *wcid; c8846e1015022d Felix Fietkau 2018-11-06 475 c8846e1015022d Felix Fietkau 2018-11-06 @476 if (idx >= ARRAY_SIZE(dev->mt76.wcid)) c8846e1015022d Felix Fietkau 2018-11-06 477 return NULL; c8846e1015022d Felix Fietkau 2018-11-06 478 c8846e1015022d Felix Fietkau 2018-11-06 479 wcid = rcu_dereference(dev->mt76.wcid[idx]); c8846e1015022d Felix Fietkau 2018-11-06 480 if (unicast || !wcid) c8846e1015022d Felix Fietkau 2018-11-06 481 return wcid; c8846e1015022d Felix Fietkau 2018-11-06 482 c8846e1015022d Felix Fietkau 2018-11-06 483 if (!wcid->sta) c8846e1015022d Felix Fietkau 2018-11-06 484 return NULL; c8846e1015022d Felix Fietkau 2018-11-06 485 c8846e1015022d Felix Fietkau 2018-11-06 486 sta = container_of(wcid, struct mt7603_sta, wcid); c8846e1015022d Felix Fietkau 2018-11-06 487 if (!sta->vif) c8846e1015022d Felix Fietkau 2018-11-06 488 return NULL; c8846e1015022d Felix Fietkau 2018-11-06 489 c8846e1015022d Felix Fietkau 2018-11-06 490 return &sta->vif->sta.wcid; c8846e1015022d Felix Fietkau 2018-11-06 491 } c8846e1015022d Felix Fietkau 2018-11-06 492 :::::: The code at line 476 was first introduced by commit :::::: c8846e1015022d2531ac4c895783e400b3e5babe mt76: add driver for MT7603E and MT7628/7688 :::::: TO: Felix Fietkau <nbd(a)nbd.name&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