tree: https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git master head: 270315b8235e3d10c2e360cff56c2f9e0915a252 commit: 0cd39f4600ed4de859383018eb10f0f724900e1b locking/seqlock, headers: Untangle the spaghetti monster date: 3 months ago config: x86_64-randconfig-a003-20201020 (attached as .config) compiler: clang version 12.0.0 (https://github.com/llvm/llvm-project ea693a162786d933863ab079648d4261ac0ead47) 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 # install x86_64 cross compiling tool for clang build # apt-get install binutils-x86-64-linux-gnu # 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 0cd39f4600ed4de859383018eb10f0f724900e1b # save the attached .config to linux build tree COMPILER_INSTALL_PATH=$HOME/0day COMPILER=clang make.cross ARCH=x86_64 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 >>): In file included from drivers/staging/media/atomisp/pci/mmu/sh_mmu_mrfld.c:23: In file included from drivers/staging/media/atomisp//pci/atomisp_compat.h:22: In file included from drivers/staging/media/atomisp//pci/atomisp_compat_css20.h:24: In file included from drivers/staging/media/atomisp//pci/ia_css.h:28: In file included from drivers/staging/media/atomisp//pci/ia_css_control.h:25: ia_css_load_firmware(struct device *dev, const struct ia_css_env *env, ^ In file included from drivers/staging/media/atomisp/pci/mmu/sh_mmu_mrfld.c:23: In file included from drivers/staging/media/atomisp//pci/atomisp_compat.h:22: In file included from drivers/staging/media/atomisp//pci/atomisp_compat_css20.h:24: In file included from drivers/staging/media/atomisp//pci/ia_css.h:28: int ia_css_init(struct device *dev, ^ 2 warnings generated. vim +52 drivers/staging/media/atomisp//pci/ia_css_firmware.h ad85094b293e40e drivers/staging/media/atomisp/pci/atomisp2/css2400/ia_css_firmware.h Mauro Carvalho Chehab 2020-04-19 32 ad85094b293e40e drivers/staging/media/atomisp/pci/atomisp2/css2400/ia_css_firmware.h Mauro Carvalho Chehab 2020-04-19 33 /* @brief Loads the firmware ad85094b293e40e drivers/staging/media/atomisp/pci/atomisp2/css2400/ia_css_firmware.h Mauro Carvalho Chehab 2020-04-19 34 * @param[in] env Environment, provides functions to access the ad85094b293e40e drivers/staging/media/atomisp/pci/atomisp2/css2400/ia_css_firmware.h Mauro Carvalho Chehab 2020-04-19 35 * environment in which the CSS code runs. This is ad85094b293e40e drivers/staging/media/atomisp/pci/atomisp2/css2400/ia_css_firmware.h Mauro Carvalho Chehab 2020-04-19 36 * used for host side memory access and message ad85094b293e40e drivers/staging/media/atomisp/pci/atomisp2/css2400/ia_css_firmware.h Mauro Carvalho Chehab 2020-04-19 37 * printing. ad85094b293e40e drivers/staging/media/atomisp/pci/atomisp2/css2400/ia_css_firmware.h Mauro Carvalho Chehab 2020-04-19 38 * @param[in] fw Firmware package containing the firmware for all ad85094b293e40e drivers/staging/media/atomisp/pci/atomisp2/css2400/ia_css_firmware.h Mauro Carvalho Chehab 2020-04-19 39 * predefined ISP binaries. 41022d35ddf2193 drivers/staging/media/atomisp/pci/ia_css_firmware.h Mauro Carvalho Chehab 2020-05-28 40 * @return Returns -EINVAL in case of any 41022d35ddf2193 drivers/staging/media/atomisp/pci/ia_css_firmware.h Mauro Carvalho Chehab 2020-05-28 41 * errors and 0 otherwise. ad85094b293e40e drivers/staging/media/atomisp/pci/atomisp2/css2400/ia_css_firmware.h Mauro Carvalho Chehab 2020-04-19 42 * ad85094b293e40e drivers/staging/media/atomisp/pci/atomisp2/css2400/ia_css_firmware.h Mauro Carvalho Chehab 2020-04-19 43 * This function interprets the firmware package. All ad85094b293e40e drivers/staging/media/atomisp/pci/atomisp2/css2400/ia_css_firmware.h Mauro Carvalho Chehab 2020-04-19 44 * contents of this firmware package are copied into local data structures, so ad85094b293e40e drivers/staging/media/atomisp/pci/atomisp2/css2400/ia_css_firmware.h Mauro Carvalho Chehab 2020-04-19 45 * the fw pointer could be freed after this function completes. ad85094b293e40e drivers/staging/media/atomisp/pci/atomisp2/css2400/ia_css_firmware.h Mauro Carvalho Chehab 2020-04-19 46 * ad85094b293e40e drivers/staging/media/atomisp/pci/atomisp2/css2400/ia_css_firmware.h Mauro Carvalho Chehab 2020-04-19 47 * Rationale for this function is that it can be called before ia_css_init, and thus ad85094b293e40e drivers/staging/media/atomisp/pci/atomisp2/css2400/ia_css_firmware.h Mauro Carvalho Chehab 2020-04-19 48 * speeds up ia_css_init (ia_css_init is called each time a stream is created but the ad85094b293e40e drivers/staging/media/atomisp/pci/atomisp2/css2400/ia_css_firmware.h Mauro Carvalho Chehab 2020-04-19 49 * firmware only needs to be loaded once). ad85094b293e40e drivers/staging/media/atomisp/pci/atomisp2/css2400/ia_css_firmware.h Mauro Carvalho Chehab 2020-04-19 50 */ 41022d35ddf2193 drivers/staging/media/atomisp/pci/ia_css_firmware.h Mauro Carvalho Chehab 2020-05-28 51 int 8568fe630066a73 drivers/staging/media/atomisp/pci/ia_css_firmware.h Mauro Carvalho Chehab 2020-05-07 @52 ia_css_load_firmware(struct device *dev, const struct ia_css_env *env, ad85094b293e40e drivers/staging/media/atomisp/pci/atomisp2/css2400/ia_css_firmware.h Mauro Carvalho Chehab 2020-04-19 53 const struct ia_css_fw *fw); ad85094b293e40e drivers/staging/media/atomisp/pci/atomisp2/css2400/ia_css_firmware.h Mauro Carvalho Chehab 2020-04-19 54 :::::: The code at line 52 was first introduced by commit :::::: 8568fe630066a733456fb1ffc8e1402191d7e27c media: atomisp: print a better message when fw version is wrong :::::: TO: Mauro Carvalho Chehab <mchehab+huawei(a)kernel.org&gt; :::::: CC: Mauro Carvalho Chehab <mchehab+huawei(a)kernel.org&gt; --- 0-DAY CI Kernel Test Service, Intel Corporation https://lists.01.org/hyperkitty/list/kbuild-all@lists.01.org