tree: https://github.com/AsahiLinux/linux bits/080-wifi head: 1753101ce16367deadb5ec5ab5dc7ab4894649bf commit: cc44c86950084bc3437485288390841cf117c0d1 [11/39] brcmfmac: of: Use devm_kstrdup for board_type & check for errors config: x86_64-randconfig-a003-20220117 (https://download.01.org/0day-ci/archive/20220121/202201212104.gFjUBTm8-lk...) compiler: clang version 14.0.0 (https://github.com/llvm/llvm-project 7b3d30728816403d1fd73cc5082e9fb761262bce) 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 # https://github.com/AsahiLinux/linux/commit/cc44c86950084bc343748528839084... git remote add asahilinux https://github.com/AsahiLinux/linux git fetch --no-tags asahilinux bits/080-wifi git checkout cc44c86950084bc3437485288390841cf117c0d1 # save the config file to linux build tree mkdir build_dir COMPILER_INSTALL_PATH=$HOME/0day COMPILER=clang make.cross W=1 O=build_dir ARCH=x86_64 SHELL=/bin/bash drivers/net/wireless/broadcom/brcm80211/brcmfmac/ If you fix the issue, kindly add following tag as appropriate Reported-by: kernel test robot <lkp(a)intel.com&gt; All warnings (new ones prefixed by >>): int i, len; ^ 1 warning generated. vim +/len +74 drivers/net/wireless/broadcom/brcm80211/brcmfmac/of.c 1a3ac5c651a0c85 drivers/net/wireless/broadcom/brcm80211/brcmfmac/of.c Shawn Guo 2021-04-17 60 e457a8a01a19277 drivers/net/wireless/broadcom/brcm80211/brcmfmac/of.c Rafał Miłecki 2017-01-07 61 void brcmf_of_probe(struct device *dev, enum brcmf_bus_type bus_type, e457a8a01a19277 drivers/net/wireless/broadcom/brcm80211/brcmfmac/of.c Rafał Miłecki 2017-01-07 62 struct brcmf_mp_device *settings) 61f663dfc1a091c drivers/net/wireless/brcm80211/brcmfmac/of.c Chen-Yu Tsai 2014-06-29 63 { e457a8a01a19277 drivers/net/wireless/broadcom/brcm80211/brcmfmac/of.c Rafał Miłecki 2017-01-07 64 struct brcmfmac_sdio_pd *sdio = &settings->bus.sdio; 0ad4b55b2f29784 drivers/net/wireless/broadcom/brcm80211/brcmfmac/of.c Hans de Goede 2018-10-10 65 struct device_node *root, *np = dev->of_node; 61f663dfc1a091c drivers/net/wireless/brcm80211/brcmfmac/of.c Chen-Yu Tsai 2014-06-29 66 int irq; 1a3ac5c651a0c85 drivers/net/wireless/broadcom/brcm80211/brcmfmac/of.c Shawn Guo 2021-04-17 67 int err; 61f663dfc1a091c drivers/net/wireless/brcm80211/brcmfmac/of.c Chen-Yu Tsai 2014-06-29 68 u32 irqf; 61f663dfc1a091c drivers/net/wireless/brcm80211/brcmfmac/of.c Chen-Yu Tsai 2014-06-29 69 u32 val; 61f663dfc1a091c drivers/net/wireless/brcm80211/brcmfmac/of.c Chen-Yu Tsai 2014-06-29 70 0ad4b55b2f29784 drivers/net/wireless/broadcom/brcm80211/brcmfmac/of.c Hans de Goede 2018-10-10 71 /* Set board-type to the first string of the machine compatible prop */ 0ad4b55b2f29784 drivers/net/wireless/broadcom/brcm80211/brcmfmac/of.c Hans de Goede 2018-10-10 72 root = of_find_node_by_path("/"); 0ad4b55b2f29784 drivers/net/wireless/broadcom/brcm80211/brcmfmac/of.c Hans de Goede 2018-10-10 73 if (root) { 29e354ebeeecaee drivers/net/wireless/broadcom/brcm80211/brcmfmac/of.c Matthias Brugger 2020-07-01 @74 int i, len; :::::: The code at line 74 was first introduced by commit :::::: 29e354ebeeecaee979e6fe22cd6272682d7552c9 brcmfmac: Transform compatible string for FW loading :::::: TO: Matthias Brugger <mbrugger(a)suse.com&gt; :::::: CC: Kalle Valo <kvalo(a)codeaurora.org&gt; --- 0-DAY CI Kernel Test Service, Intel Corporation https://lists.01.org/hyperkitty/list/kbuild-all@lists.01.org