Hi Arend, kernel test robot noticed the following build warnings: [auto build test WARNING on wireless-next/main] [also build test WARNING on wireless/main linus/master v6.7-rc8 next-20231222] [If your patch is applied to the wrong git tree, kindly drop us a note. And when submitting patch, we suggest to use '--base' as documented in https://git-scm.com/docs/git-format-patch#_base_tree_information] url: https://github.com/intel-lab-lkp/linux/commits/Arend-van-Spriel/wifi-brcmfmac-export-firmware-interface-functions/20240101-164717 base: https://git.kernel.org/pub/scm/linux/kernel/git/wireless/wireless-next.git main patch link: https://lore.kernel.org/r/20240101084430.161821-2-arend.vanspriel%40broadcom.com patch subject: [PATCH 1/4] wifi: brcmfmac: export firmware interface functions config: sparc-allmodconfig (https://download.01.org/0day-ci/archive/20240102/202401021103.U0Y8xoJK-lkp@xxxxxxxxx/config) compiler: sparc64-linux-gcc (GCC) 13.2.0 reproduce (this is a W=1 build): (https://download.01.org/0day-ci/archive/20240102/202401021103.U0Y8xoJK-lkp@xxxxxxxxx/reproduce) If you fix the issue in a separate patch/commit (i.e. not just a new version of the same patch/commit), kindly add following tags | Reported-by: kernel test robot <lkp@xxxxxxxxx> | Closes: https://lore.kernel.org/oe-kbuild-all/202401021103.U0Y8xoJK-lkp@xxxxxxxxx/ All warnings (new ones prefixed by >>): In file included from include/linux/swab.h:5, from include/uapi/linux/byteorder/big_endian.h:14, from include/linux/byteorder/big_endian.h:5, from arch/sparc/include/uapi/asm/byteorder.h:5, from arch/sparc/include/asm/bitops_64.h:16, from arch/sparc/include/asm/bitops.h:5, from include/linux/bitops.h:68, from include/linux/kernel.h:23, from drivers/net/wireless/broadcom/brcm80211/brcmfmac/cfg80211.c:8: In function '__fswab32', inlined from 'brcmf_fil_cmd_int_get' at drivers/net/wireless/broadcom/brcm80211/brcmfmac/fwil.h:99:19, inlined from 'brcmf_cfg80211_get_station_ibss' at drivers/net/wireless/broadcom/brcm80211/brcmfmac/cfg80211.c:3088:8: >> include/uapi/linux/swab.h:19:45: warning: 'rate' is used uninitialized [-Wuninitialized] 19 | (((__u32)(x) & (__u32)0x000000ffUL) << 24) | \ | ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~^~~~~~ include/uapi/linux/swab.h:62:16: note: in expansion of macro '___constant_swab32' 62 | return ___constant_swab32(val); | ^~~~~~~~~~~~~~~~~~ drivers/net/wireless/broadcom/brcm80211/brcmfmac/cfg80211.c: In function 'brcmf_cfg80211_get_station_ibss': drivers/net/wireless/broadcom/brcm80211/brcmfmac/cfg80211.c:3084:13: note: 'rate' was declared here 3084 | u32 rate; | ^~~~ vim +/rate +19 include/uapi/linux/swab.h 607ca46e97a1b6 David Howells 2012-10-13 9 607ca46e97a1b6 David Howells 2012-10-13 10 /* 607ca46e97a1b6 David Howells 2012-10-13 11 * casts are necessary for constants, because we never know how for sure 607ca46e97a1b6 David Howells 2012-10-13 12 * how U/UL/ULL map to __u16, __u32, __u64. At least not in a portable way. 607ca46e97a1b6 David Howells 2012-10-13 13 */ 607ca46e97a1b6 David Howells 2012-10-13 14 #define ___constant_swab16(x) ((__u16)( \ 607ca46e97a1b6 David Howells 2012-10-13 15 (((__u16)(x) & (__u16)0x00ffU) << 8) | \ 607ca46e97a1b6 David Howells 2012-10-13 16 (((__u16)(x) & (__u16)0xff00U) >> 8))) 607ca46e97a1b6 David Howells 2012-10-13 17 607ca46e97a1b6 David Howells 2012-10-13 18 #define ___constant_swab32(x) ((__u32)( \ 607ca46e97a1b6 David Howells 2012-10-13 @19 (((__u32)(x) & (__u32)0x000000ffUL) << 24) | \ 607ca46e97a1b6 David Howells 2012-10-13 20 (((__u32)(x) & (__u32)0x0000ff00UL) << 8) | \ 607ca46e97a1b6 David Howells 2012-10-13 21 (((__u32)(x) & (__u32)0x00ff0000UL) >> 8) | \ 607ca46e97a1b6 David Howells 2012-10-13 22 (((__u32)(x) & (__u32)0xff000000UL) >> 24))) 607ca46e97a1b6 David Howells 2012-10-13 23 -- 0-DAY CI Kernel Test Service https://github.com/intel/lkp-tests/wiki
