tree: https://git.kernel.org/pub/scm/linux/kernel/git/next/linux-next.git master head: f02ac5c95dfd45d2f50ecc68d79177de326c668c commit: d379e8899a8da1041c347ae5b792773c48a559a9 [4808/7265] ARM: omap1: move 32k counter from plat-omap to mach-omap1 config: arm-omap1_defconfig (https://download.01.org/0day-ci/archive/20220428/202204280347.ar7Y3m5k-lkp@xxxxxxxxx/config) compiler: clang version 15.0.0 (https://github.com/llvm/llvm-project 1cddcfdc3c683b393df1a5c9063252eb60e52818) 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 arm cross compiling tool for clang build # apt-get install binutils-arm-linux-gnueabi # https://git.kernel.org/pub/scm/linux/kernel/git/next/linux-next.git/commit/?id=d379e8899a8da1041c347ae5b792773c48a559a9 git remote add linux-next https://git.kernel.org/pub/scm/linux/kernel/git/next/linux-next.git git fetch --no-tags linux-next master git checkout d379e8899a8da1041c347ae5b792773c48a559a9 # save the config file mkdir build_dir && cp config build_dir/.config COMPILER_INSTALL_PATH=$HOME/0day COMPILER=clang make.cross W=1 O=build_dir ARCH=arm SHELL=/bin/bash If you fix the issue, kindly add following tag as appropriate Reported-by: kernel test robot <lkp@xxxxxxxxx> All warnings (new ones prefixed by >>): >> arch/arm/mach-omap1/timer32k.c:215:12: warning: no previous prototype for function 'omap_init_clocksource_32k' [-Wmissing-prototypes] int __init omap_init_clocksource_32k(void __iomem *vbase) ^ arch/arm/mach-omap1/timer32k.c:215:1: note: declare 'static' if the function is not intended to be used outside of this translation unit int __init omap_init_clocksource_32k(void __iomem *vbase) ^ static 1 warning generated. vim +/omap_init_clocksource_32k +215 arch/arm/mach-omap1/timer32k.c 205 206 /** 207 * omap_init_clocksource_32k - setup and register counter 32k as a 208 * kernel clocksource 209 * @pbase: base addr of counter_32k module 210 * @size: size of counter_32k to map 211 * 212 * Returns 0 upon success or negative error code upon failure. 213 * 214 */ > 215 int __init omap_init_clocksource_32k(void __iomem *vbase) 216 { 217 int ret; 218 219 /* 220 * 32k sync Counter IP register offsets vary between the 221 * highlander version and the legacy ones. 222 * The 'SCHEME' bits(30-31) of the revision register is used 223 * to identify the version. 224 */ 225 if (readl_relaxed(vbase + OMAP2_32KSYNCNT_REV_OFF) & 226 OMAP2_32KSYNCNT_REV_SCHEME) 227 sync32k_cnt_reg = vbase + OMAP2_32KSYNCNT_CR_OFF_HIGH; 228 else 229 sync32k_cnt_reg = vbase + OMAP2_32KSYNCNT_CR_OFF_LOW; 230 231 /* 232 * 120000 rough estimate from the calculations in 233 * __clocksource_update_freq_scale. 234 */ 235 clocks_calc_mult_shift(&persistent_mult, &persistent_shift, 236 32768, NSEC_PER_SEC, 120000); 237 238 ret = clocksource_mmio_init(sync32k_cnt_reg, "32k_counter", 32768, 239 250, 32, clocksource_mmio_readl_up); 240 if (ret) { 241 pr_err("32k_counter: can't register clocksource\n"); 242 return ret; 243 } 244 245 sched_clock_register(omap_32k_read_sched_clock, 32, 32768); 246 register_persistent_clock(omap_read_persistent_clock64); 247 pr_info("OMAP clocksource: 32k_counter at 32768 Hz\n"); 248 249 return 0; 250 } 251 -- 0-DAY CI Kernel Test Service https://01.org/lkp
