tree: https://git.kernel.org/pub/scm/linux/kernel/git/next/linux-next.git master head: 3196a52aff93186897f15f1a6c03220ce6523d82 commit: 22dffbddf016791e99f02d1ad36f5043ce615085 [9296/10297] mt76: mt7915: introduce mt7915_mcu_beacon_check_caps() config: riscv-allyesconfig (attached as .config) compiler: riscv64-linux-gcc (GCC) 11.2.0 reproduce: wget https://raw.githubusercontent.com/intel/lkp-tests/master/sbin/make.cross -O ~/bin/make.cross chmod +x ~/bin/make.cross # apt-get install sparse # sparse version: v0.6.4-dirty # https://git.kernel.org/pub/scm/linux/kernel/git/next/linux-next.git/commi... git remote add linux-next https://git.kernel.org/pub/scm/linux/kernel/git/next/linux-next.git git fetch --no-tags linux-next master git checkout 22dffbddf016791e99f02d1ad36f5043ce615085 # save the attached .config to linux build tree COMPILER_INSTALL_PATH=$HOME/0day COMPILER=gcc-11.2.0 make.cross C=1 CF='-fdiagnostic-prefix -D__CHECK_ENDIAN__' O=build_dir ARCH=riscv SHELL=/bin/bash drivers/net/wireless/mediatek/mt76/mt7915/ If you fix the issue, kindly add following tag as appropriate Reported-by: kernel test robot <lkp(a)intel.com&gt; sparse warnings: (new ones prefixed by >>) vim +2492 drivers/net/wireless/mediatek/mt76/mt7915/mcu.c 2463 2464 static void 2465 mt7915_mcu_beacon_check_caps(struct mt7915_phy *phy, struct ieee80211_vif *vif, 2466 struct sk_buff *skb) 2467 { 2468 struct mt7915_vif *mvif = (struct mt7915_vif *)vif->drv_priv; 2469 struct mt7915_vif_cap *vc = &mvif->cap; 2470 const struct ieee80211_he_cap_elem *he; 2471 const struct ieee80211_vht_cap *vht; 2472 const struct ieee80211_ht_cap *ht; 2473 struct ieee80211_mgmt *mgmt = (struct ieee80211_mgmt *)skb->data; 2474 const u8 *ie; 2475 u32 len, bc; 2476 2477 /* Check missing configuration options to allow AP mode in mac80211 2478 * to remain in sync with hostapd settings, and get a subset of 2479 * beacon and hardware capabilities. 2480 */ 2481 if (WARN_ON_ONCE(skb->len <= (mgmt->u.beacon.variable - skb->data))) 2482 return; 2483 2484 memset(vc, 0, sizeof(*vc)); 2485 2486 len = skb->len - (mgmt->u.beacon.variable - skb->data); 2487 2488 ie = cfg80211_find_ie(WLAN_EID_HT_CAPABILITY, mgmt->u.beacon.variable, 2489 len); 2490 if (ie && ie[1] >= sizeof(*ht)) { 2491 ht = (void *)(ie + 2); 2493 2494 vc->ldpc |= !!(bc & IEEE80211_HT_CAP_LDPC_CODING); 2495 } 2496 2497 ie = cfg80211_find_ie(WLAN_EID_VHT_CAPABILITY, mgmt->u.beacon.variable, 2498 len); 2499 if (ie && ie[1] >= sizeof(*vht)) { 2500 u32 pc = phy->mt76->sband_5g.sband.vht_cap.cap; 2501 2502 vht = (void *)(ie + 2); 2503 bc = le32_to_cpu(vht->vht_cap_info); 2504 2505 vc->ldpc |= !!(bc & IEEE80211_VHT_CAP_RXLDPC); 2506 vc->vht_su_ebfer = 2507 (bc & IEEE80211_VHT_CAP_SU_BEAMFORMER_CAPABLE) && 2508 (pc & IEEE80211_VHT_CAP_SU_BEAMFORMER_CAPABLE); 2509 vc->vht_su_ebfee = 2510 (bc & IEEE80211_VHT_CAP_SU_BEAMFORMEE_CAPABLE) && 2511 (pc & IEEE80211_VHT_CAP_SU_BEAMFORMEE_CAPABLE); 2512 vc->vht_mu_ebfer = 2513 (bc & IEEE80211_VHT_CAP_MU_BEAMFORMER_CAPABLE) && 2514 (pc & IEEE80211_VHT_CAP_MU_BEAMFORMER_CAPABLE); 2515 vc->vht_mu_ebfee = 2516 (bc & IEEE80211_VHT_CAP_MU_BEAMFORMEE_CAPABLE) && 2517 (pc & IEEE80211_VHT_CAP_MU_BEAMFORMEE_CAPABLE); 2518 } 2519 2520 ie = cfg80211_find_ext_ie(WLAN_EID_EXT_HE_CAPABILITY, 2521 mgmt->u.beacon.variable, len); 2522 if (ie && ie[1] >= sizeof(*he) + 1) { 2523 const struct ieee80211_sta_he_cap *pc = 2524 mt7915_get_he_phy_cap(phy, vif); 2525 const struct ieee80211_he_cap_elem *pe = &pc->he_cap_elem; 2526 2527 he = (void *)(ie + 3); 2528 2529 vc->he_su_ebfer = 2530 HE_PHY(CAP3_SU_BEAMFORMER, he->phy_cap_info[3]) && 2531 HE_PHY(CAP3_SU_BEAMFORMER, pe->phy_cap_info[3]); 2532 vc->he_su_ebfee = 2533 HE_PHY(CAP4_SU_BEAMFORMEE, he->phy_cap_info[4]) && 2534 HE_PHY(CAP4_SU_BEAMFORMEE, pe->phy_cap_info[4]); 2535 vc->he_mu_ebfer = 2536 HE_PHY(CAP4_MU_BEAMFORMER, he->phy_cap_info[4]) && 2537 HE_PHY(CAP4_MU_BEAMFORMER, pe->phy_cap_info[4]); 2538 } 2539 } 2540 --- 0-DAY CI Kernel Test Service, Intel Corporation https://lists.01.org/hyperkitty/list/kbuild-all@lists.01.org