Hi Leo, [auto build test WARNING on next-20170522] [cannot apply to linus/master linux/master robh/for-next v4.9-rc8 v4.9-rc7 v4.9-rc6 v4.12-rc2] [if your patch is applied to the wrong git tree, please drop us a note to help improve the system] url: https://github.com/0day-ci/linux/commits/Leo-Yan/coresight-enable-debug-module/20170524-075217 config: arm-allmodconfig (attached as .config) compiler: arm-linux-gnueabi-gcc (Debian 6.1.1-9) 6.1.1 20160705 reproduce: wget https://raw.githubusercontent.com/01org/lkp-tests/master/sbin/make.cross -O ~/bin/make.cross chmod +x ~/bin/make.cross # save the attached .config to linux build tree make.cross ARCH=arm All warnings (new ones prefixed by >>): drivers/hwtracing/coresight/coresight-cpu-debug.c: In function 'debug_adjust_pc': >> drivers/hwtracing/coresight/coresight-cpu-debug.c:263:44: warning: left shift count >= width of type [-Wshift-count-overflow] return (unsigned long)drvdata->edpcsr_hi << 32 | ^~ vim +263 drivers/hwtracing/coresight/coresight-cpu-debug.c 247 if (drvdata->edvidsr_present) 248 drvdata->edvidsr = readl_relaxed(drvdata->base + EDVIDSR); 249 250 out: 251 /* Restore EDPRCR register */ 252 writel_relaxed(save_edprcr, drvdata->base + EDPRCR); 253 254 CS_LOCK(drvdata->base); 255 } 256 257 static unsigned long debug_adjust_pc(struct debug_drvdata *drvdata) 258 { 259 unsigned long arm_inst_offset = 0, thumb_inst_offset = 0; 260 unsigned long pc; 261 262 if (IS_ENABLED(CONFIG_64BIT)) > 263 return (unsigned long)drvdata->edpcsr_hi << 32 | 264 (unsigned long)drvdata->edpcsr; 265 266 pc = (unsigned long)drvdata->edpcsr; 267 268 if (drvdata->pc_has_offset) { 269 arm_inst_offset = 8; 270 thumb_inst_offset = 4; 271 } --- 0-DAY kernel test infrastructure Open Source Technology Center https://lists.01.org/pipermail/kbuild-all Intel Corporation
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