Messages in this thread | | | Date | Fri, 23 Jul 2021 16:25:54 +0800 | From | kernel test robot <> | Subject | arch/powerpc/platforms/microwatt/rng.c:17:5: error: no previous prototype for function 'microwatt_get_random_darn' |
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tree: https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git master head: 8baef6386baaefb776bdd09b5c7630cf057c51c6 commit: c25769fddaec13509b6cdc7ad17458f239c4cee7 powerpc/microwatt: Add support for hardware random number generator date: 5 weeks ago config: powerpc64-randconfig-r033-20210723 (attached as .config) compiler: clang version 13.0.0 (https://github.com/llvm/llvm-project 9625ca5b602616b2f5584e8a49ba93c52c141e40) 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 powerpc64 cross compiling tool for clang build # apt-get install binutils-powerpc64-linux-gnu # https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=c25769fddaec13509b6cdc7ad17458f239c4cee7 git remote add linus https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git git fetch --no-tags linus master git checkout c25769fddaec13509b6cdc7ad17458f239c4cee7 # save the attached .config to linux build tree COMPILER_INSTALL_PATH=$HOME/0day COMPILER=clang make.cross ARCH=powerpc64
If you fix the issue, kindly add following tag as appropriate Reported-by: kernel test robot <lkp@intel.com>
All errors (new ones prefixed by >>):
>> arch/powerpc/platforms/microwatt/rng.c:17:5: error: no previous prototype for function 'microwatt_get_random_darn' [-Werror,-Wmissing-prototypes] int microwatt_get_random_darn(unsigned long *v) ^ arch/powerpc/platforms/microwatt/rng.c:17:1: note: declare 'static' if the function is not intended to be used outside of this translation unit int microwatt_get_random_darn(unsigned long *v) ^ static 1 error generated.
vim +/microwatt_get_random_darn +17 arch/powerpc/platforms/microwatt/rng.c
16 > 17 int microwatt_get_random_darn(unsigned long *v) 18 { 19 unsigned long val; 20 21 /* Using DARN with L=1 - 64-bit conditioned random number */ 22 asm volatile(PPC_DARN(%0, 1) : "=r"(val)); 23 24 if (val == DARN_ERR) 25 return 0; 26 27 *v = val; 28 29 return 1; 30 } 31
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