tree: https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git master head: f71077a4d84bbe8c7b91b7db7c4ef815755ac5e3 commit: 9645ccc7bd7a16cd73c3be9dee70cd702b03be37 ep93xx: clock: convert in-place to COMMON_CLK date: 4 months ago config: arm-randconfig-s032-20220217 (https://download.01.org/0day-ci/archive/20220217/202202172100.TE6YfATQ-lk...) compiler: arm-linux-gnueabi-gcc (GCC) 11.2.0 reproduce: wget https://raw.githubusercontent.com/intel/lkp-tests/master/sbin/make.cross -O ~/bin/make.cross chmod +x ~/bin/make.cross # apt-get install sparse # sparse version: v0.6.4-dirty # 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 9645ccc7bd7a16cd73c3be9dee70cd702b03be37 # save the config file to linux build tree mkdir build_dir COMPILER_INSTALL_PATH=$HOME/0day COMPILER=gcc-11.2.0 make.cross C=1 CF='-fdiagnostic-prefix -D__CHECK_ENDIAN__' 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(a)intel.com&gt; sparse warnings: (new ones prefixed by >>) arch/arm/mach-ep93xx/clock.c:99:9: sparse: sparse: context imbalance in 'ep93xx_clk_enable' - different lock contexts for basic block arch/arm/mach-ep93xx/clock.c:116:9: sparse: sparse: context imbalance in 'ep93xx_clk_disable' - different lock contexts for basic block arch/arm/mach-ep93xx/clock.c:197:9: sparse: sparse: context imbalance in 'ep93xx_mux_set_parent_lock' - different lock contexts for basic block vim +210 arch/arm/mach-ep93xx/clock.c 205 206 static int ep93xx_mux_determine_rate(struct clk_hw *hw, 207 struct clk_rate_request *req) 208 { 209 unsigned long rate = req->rate; 211 unsigned long __parent_rate; 212 unsigned long best_rate = 0, actual_rate, mclk_rate; 213 unsigned long best_parent_rate; 214 int __div = 0, __pdiv = 0; 215 int i; 216 217 /* 218 * Try the two pll's and the external clock 219 * Because the valid predividers are 2, 2.5 and 3, we multiply 220 * all the clocks by 2 to avoid floating point math. 221 * 222 * This is based on the algorithm in the ep93xx raster guide: 223 * http://be-a-maverick.com/en/pubs/appNote/AN269REV1.pdf 224 * 225 */ 226 for (i = 0; i < ARRAY_SIZE(mux_parents); i++) { 227 struct clk *parent = clk_get_sys(mux_parents[i], NULL); 228 229 __parent_rate = clk_get_rate(parent); 230 mclk_rate = __parent_rate * 2; 231 232 /* Try each predivider value */ 233 for (__pdiv = 4; __pdiv <= 6; __pdiv++) { 234 __div = mclk_rate / (rate * __pdiv); 235 if (__div < 2 || __div > 127) 236 continue; 237 238 actual_rate = mclk_rate / (__pdiv * __div); 239 if (is_best(rate, actual_rate, best_rate)) { 240 best_rate = actual_rate; 241 best_parent_rate = __parent_rate; 242 best_parent = parent; 243 } 244 } 245 } 246 247 if (!best_parent) 248 return -EINVAL; 249 250 req->best_parent_rate = best_parent_rate; 251 req->best_parent_hw = __clk_get_hw(best_parent); 252 req->rate = best_rate; 253 254 return 0; 255 } 256 --- 0-DAY CI Kernel Test Service, Intel Corporation https://lists.01.org/hyperkitty/list/kbuild-all@lists.01.org