Messages in this thread | ![/](/images/icornerl.gif) | | Date | Sun, 26 Dec 2021 15:57:05 +0800 | From | kernel test robot <> | Subject | drivers/irqchip/irq-bcm7038-l1.c:89:28: warning: unused function 'reg_mask_status' |
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Hi Paul,
First bad commit (maybe != root cause):
tree: https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git master head: 438645193e59e91761ccb3fa55f6ce70b615ff93 commit: c434b9f80b0923e6460031b0fd964f8b0bf3c6a6 MIPS: Kconfig: add MIPS_GENERIC_KERNEL symbol date: 1 year, 3 months ago config: mips-randconfig-c004-20211226 (https://download.01.org/0day-ci/archive/20211226/202112261532.AJEnMzCL-lkp@intel.com/config) compiler: clang version 14.0.0 (https://github.com/llvm/llvm-project 0c553cc1af2e4c14100df6cf4a6fc91987e778e6) 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=c434b9f80b0923e6460031b0fd964f8b0bf3c6a6 git remote add linus https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git git fetch --no-tags linus master git checkout c434b9f80b0923e6460031b0fd964f8b0bf3c6a6 # save the config file to linux build tree mkdir build_dir COMPILER_INSTALL_PATH=$HOME/0day COMPILER=clang make.cross W=1 O=build_dir ARCH=mips SHELL=/bin/bash block/ drivers/irqchip/ drivers/scsi/ufs/ kernel/time/
If you fix the issue, kindly add following tag as appropriate Reported-by: kernel test robot <lkp@intel.com>
All warnings (new ones prefixed by >>):
>> drivers/irqchip/irq-bcm7038-l1.c:89:28: warning: unused function 'reg_mask_status' static inline unsigned int reg_mask_status(struct bcm7038_l1_chip ^ fatal error: error in backend: Nested variants found in inline asm string: ' .set push .set mips64r2 .if ( 0x00 ) != -1)) 0x00 ) != -1)) : ($( static struct ftrace_branch_data __attribute__((__aligned__(4))) __attribute__((__section__("_ftrace_branch"))) __if_trace = $( .func = __func__, .file = "arch/mips/include/asm/bitops.h", .line = 133, $); 0x00 ) != -1)) : $))) ) && ( 0 ); .set push; .set mips64r2; .rept 1; sync 0x00; .endr; .set pop; .else; ; .endif 1: ll $0, $1 and $0, $2 sc $0, $1 beqz $0, 1b .set pop ' 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 0c553cc1af2e4c14100df6cf4a6fc91987e778e6) Target: mips-unknown-linux Thread model: posix InstalledDir: /opt/cross/clang-0c553cc1af/bin clang-14: note: diagnostic msg: Makefile arch block drivers include kernel mm nr_bisected scripts sound source usr -- kernel/time/hrtimer.c:120:21: warning: initializer overrides prior initialization of this subobject = HRTIMER_BASE_REALTIME, ^~~~~~~~~~~~~~~~~~~~~ kernel/time/hrtimer.c:118:27: note: previous initialization is here [0 ... MAX_CLOCKS - 1] = HRTIMER_MAX_CLOCK_BASES, ^~~~~~~~~~~~~~~~~~~~~~~ kernel/time/hrtimer.c:121:22: warning: initializer overrides prior initialization of this subobject = HRTIMER_BASE_MONOTONIC, ^~~~~~~~~~~~~~~~~~~~~~ kernel/time/hrtimer.c:118:27: note: previous initialization is here [0 ... MAX_CLOCKS - 1] = HRTIMER_MAX_CLOCK_BASES, ^~~~~~~~~~~~~~~~~~~~~~~ kernel/time/hrtimer.c:122:21: warning: initializer overrides prior initialization of this subobject = HRTIMER_BASE_BOOTTIME, ^~~~~~~~~~~~~~~~~~~~~ kernel/time/hrtimer.c:118:27: note: previous initialization is here [0 ... MAX_CLOCKS - 1] = HRTIMER_MAX_CLOCK_BASES, ^~~~~~~~~~~~~~~~~~~~~~~ kernel/time/hrtimer.c:123:17: warning: initializer overrides prior initialization of this subobject = HRTIMER_BASE_TAI, ^~~~~~~~~~~~~~~~ kernel/time/hrtimer.c:118:27: note: previous initialization is here [0 ... MAX_CLOCKS - 1] = HRTIMER_MAX_CLOCK_BASES, ^~~~~~~~~~~~~~~~~~~~~~~ kernel/time/hrtimer.c:1487:7: warning: variable 'expires_in_hardirq' set but not used bool expires_in_hardirq; ^ kernel/time/hrtimer.c:147:20: warning: unused function 'is_migration_base' static inline bool is_migration_base(struct hrtimer_clock_base ^ >> kernel/time/hrtimer.c:621:19: warning: unused function 'hrtimer_hres_active' static inline int hrtimer_hres_active(void) ^ kernel/time/hrtimer.c:1726:20: warning: unused function '__hrtimer_peek_ahead_timers' static inline void __hrtimer_peek_ahead_timers(void) { } ^ 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 = 21, $); 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 0c553cc1af2e4c14100df6cf4a6fc91987e778e6) Target: mips-unknown-linux Thread model: posix InstalledDir: /opt/cross/clang-0c553cc1af/bin clang-14: note: diagnostic msg: Makefile arch block drivers include kernel mm nr_bisected scripts sound source usr
vim +/reg_mask_status +89 drivers/irqchip/irq-bcm7038-l1.c
5f7f0317ed28b8 Kevin Cernekee 2014-12-25 88 5f7f0317ed28b8 Kevin Cernekee 2014-12-25 @89 static inline unsigned int reg_mask_status(struct bcm7038_l1_chip *intc, 5f7f0317ed28b8 Kevin Cernekee 2014-12-25 90 unsigned int word) 5f7f0317ed28b8 Kevin Cernekee 2014-12-25 91 { 5f7f0317ed28b8 Kevin Cernekee 2014-12-25 92 return (1 * intc->n_words + word) * sizeof(u32); 5f7f0317ed28b8 Kevin Cernekee 2014-12-25 93 } 5f7f0317ed28b8 Kevin Cernekee 2014-12-25 94
:::::: The code at line 89 was first introduced by commit :::::: 5f7f0317ed28b86bdae9baf65bb72d405b6f79ee IRQCHIP: Add new driver for BCM7038-style level 1 interrupt controllers
:::::: TO: Kevin Cernekee <cernekee@gmail.com> :::::: CC: Ralf Baechle <ralf@linux-mips.org>
--- 0-DAY CI Kernel Test Service, Intel Corporation https://lists.01.org/hyperkitty/list/kbuild-all@lists.01.org
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