Hi Robert, FYI, the error/warning still remains. tree: https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git master head: 49624efa65ac9889f4e7c7b2452b2e6ce42ba37d commit: 7319cdf189bb643c6d56e5898ef89ad7c3ef6c31 media: camss: Add support for VFE hardware version Titan 170 date: 6 months ago config: mips-randconfig-r003-20210904 (attached as .config) compiler: clang version 14.0.0 (https://github.com/llvm/llvm-project 1104e3258b5064e7110cc297e2cec60ac9acfc0a) 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 mips cross compiling tool for clang build # apt-get install binutils-mips-linux-gnu # https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=7319cdf189bb643c6d56e5898ef89ad7c3ef6c31 git remote add linus https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git git fetch --no-tags linus master git checkout 7319cdf189bb643c6d56e5898ef89ad7c3ef6c31 # save the attached .config to linux build tree mkdir build_dir COMPILER_INSTALL_PATH=$HOME/0day COMPILER=clang make.cross O=build_dir ARCH=mips SHELL=/bin/bash drivers/media/platform/qcom/camss/ kernel/time/ If you fix the issue, kindly add following tag as appropriate Reported-by: kernel test robot <lkp@xxxxxxxxx> All warnings (new ones prefixed by >>): >> drivers/media/platform/qcom/camss/camss-vfe-170.c:191:20: warning: unused function 'vfe_reg_clr' static inline void vfe_reg_clr(struct vfe_device u32 reg, u32 clr_bits) ^ fatal error: error in backend: Nested variants found in inline asm string: '.if ( 0x00 ) != -1)) 0x00 ) != -1)) : ($( static struct ftrace_branch_data __attribute__((__aligned__(4))) __attribute__((__section__("_ftrace_branch"))) __if_trace = $( .func = __func__, .file = "arch/mips/include/asm/barrier.h", .line = 16, $); 0x00 ) != -1)) : $))) ) && ( (1 << 0) ); .set push; .set mips64r2; .rept 1; sync 0x00; .endr; .set pop; .else; ; .endif' clang-14: error: clang frontend command failed with exit code 70 (use -v to see invocation) clang version 14.0.0 (git://gitmirror/llvm_project 6fe2beba7d2a41964af658c8c59dd172683ef739) Target: mips-unknown-linux Thread model: posix InstalledDir: /opt/cross/clang-6fe2beba7d/bin clang-14: note: diagnostic msg: Makefile arch drivers include kernel net scripts security sound source usr vim +/vfe_reg_clr +191 drivers/media/platform/qcom/camss/camss-vfe-170.c 190 > 191 static inline void vfe_reg_clr(struct vfe_device *vfe, u32 reg, u32 clr_bits) 192 { 193 u32 bits = readl_relaxed(vfe->base + reg); 194 195 writel_relaxed(bits & ~clr_bits, vfe->base + reg); 196 } 197 --- 0-DAY CI Kernel Test Service, Intel Corporation https://lists.01.org/hyperkitty/list/kbuild-all@xxxxxxxxxxxx
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