[kbuild-all] drivers/net/wireless/mediatek/mt76/mt7915/init.c:339:26: sparse: sparse: cast from restricted __le16

tree: https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git master head: 3d5e28bff7ad55aea081c1af516cc1c94a5eca7d commit: 00b2e16e006390069480e90478aa8b6e924996d7 mt76: mt7915: add TxBF capabilities date: 6 months ago config: x86_64-randconfig-s022-20201112 (attached as .config) compiler: gcc-9 (Debian 9.3.0-15) 9.3.0 reproduce: # apt-get install sparse # sparse version: v0.6.3-106-gd020cf33-dirty # 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 00b2e16e006390069480e90478aa8b6e924996d7 # save the attached .config to linux build tree make W=1 C=1 CF='-fdiagnostic-prefix -D__CHECK_ENDIAN__' ARCH=x86_64 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 +339 drivers/net/wireless/mediatek/mt76/mt7915/init.c 296 297 elem->phy_cap_info[3] &= ~IEEE80211_HE_PHY_CAP3_SU_BEAMFORMER; 298 elem->phy_cap_info[4] &= ~IEEE80211_HE_PHY_CAP4_MU_BEAMFORMER; 299 300 c = IEEE80211_HE_PHY_CAP5_BEAMFORMEE_NUM_SND_DIM_UNDER_80MHZ_MASK | 301 IEEE80211_HE_PHY_CAP5_BEAMFORMEE_NUM_SND_DIM_ABOVE_80MHZ_MASK; 302 elem->phy_cap_info[5] &= ~c; 303 304 c = IEEE80211_HE_PHY_CAP6_TRIG_SU_BEAMFORMER_FB | 305 IEEE80211_HE_PHY_CAP6_TRIG_MU_BEAMFORMER_FB; 306 elem->phy_cap_info[6] &= ~c; 307 308 elem->phy_cap_info[7] &= ~IEEE80211_HE_PHY_CAP7_MAX_NC_MASK; 309 310 c = IEEE80211_HE_PHY_CAP2_NDP_4x_LTF_AND_3_2US | 311 IEEE80211_HE_PHY_CAP2_UL_MU_FULL_MU_MIMO | 312 IEEE80211_HE_PHY_CAP2_UL_MU_PARTIAL_MU_MIMO; 313 elem->phy_cap_info[2] |= c; 314 315 c = IEEE80211_HE_PHY_CAP4_SU_BEAMFORMEE | 316 IEEE80211_HE_PHY_CAP4_BEAMFORMEE_MAX_STS_UNDER_80MHZ_4 | 317 IEEE80211_HE_PHY_CAP4_BEAMFORMEE_MAX_STS_ABOVE_80MHZ_4; 318 elem->phy_cap_info[4] |= c; 319 320 /* do not support NG16 due to spec D4.0 changes subcarrier idx */ 321 c = IEEE80211_HE_PHY_CAP6_CODEBOOK_SIZE_42_SU | 322 IEEE80211_HE_PHY_CAP6_CODEBOOK_SIZE_75_MU; 323 324 if (vif == NL80211_IFTYPE_STATION) 325 c |= IEEE80211_HE_PHY_CAP6_PARTIAL_BANDWIDTH_DL_MUMIMO; 326 327 elem->phy_cap_info[6] |= c; 328 329 if (nss < 2) 330 return; 331 332 if (vif != NL80211_IFTYPE_AP) 333 return; 334 335 elem->phy_cap_info[3] |= IEEE80211_HE_PHY_CAP3_SU_BEAMFORMER; 336 elem->phy_cap_info[4] |= IEEE80211_HE_PHY_CAP4_MU_BEAMFORMER; 337 338 /* num_snd_dim */ 340 elem->phy_cap_info[5] |= c; 341 342 c = IEEE80211_HE_PHY_CAP6_TRIG_SU_BEAMFORMER_FB | 343 IEEE80211_HE_PHY_CAP6_TRIG_MU_BEAMFORMER_FB; 344 elem->phy_cap_info[6] |= c; 345 346 /* the maximum cap is 4 x 3, (Nr, Nc) = (3, 2) */ 347 elem->phy_cap_info[7] |= min_t(int, nss - 1, 2) << 3; 348 } 349 --- 0-DAY CI Kernel Test Service, Intel Corporation https://lists.01.org/hyperkitty/list/kbuild-all@lists.01.org