Hi Jim, I love your patch! Yet something to improve: [auto build test ERROR on tegra-drm/drm/tegra/for-next] [also build test ERROR on linux/master linus/master v5.14-rc3 next-20210730] [If your patch is applied to the wrong git tree, kindly drop us a note. And when submitting patch, we suggest to use '--base' as documented in https://git-scm.com/docs/git-format-patch] url: https://github.com/0day-ci/linux/commits/Jim-Cromie/dyndbg-add-special-aux_print-framework/20210801-113749 base: git://anongit.freedesktop.org/tegra/linux.git drm/tegra/for-next config: x86_64-randconfig-a012-20210801 (attached as .config) compiler: clang version 13.0.0 (https://github.com/llvm/llvm-project 4f71f59bf3d9914188a11d0c41bedbb339d36ff5) 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 # https://github.com/0day-ci/linux/commit/1bf22862d95adc83487ade34fe1c42707f94ac4d git remote add linux-review https://github.com/0day-ci/linux git fetch --no-tags linux-review Jim-Cromie/dyndbg-add-special-aux_print-framework/20210801-113749 git checkout 1bf22862d95adc83487ade34fe1c42707f94ac4d # save the attached .config to linux build tree mkdir build_dir COMPILER_INSTALL_PATH=$HOME/0day COMPILER=clang make.cross O=build_dir ARCH=x86_64 SHELL=/bin/bash If you fix the issue, kindly add following tag as appropriate Reported-by: kernel test robot All errors (new ones prefixed by >>): >> lib/dynamic_debug.c:651:19: error: no member named 'aux_channel' in 'struct _ddebug' if (descriptor->aux_channel) { ~~~~~~~~~~ ^ lib/dynamic_debug.c:653:18: error: no member named 'aux_channel' in 'struct _ddebug' (*descriptor->aux_channel) ~~~~~~~~~~ ^ 2 errors generated. vim +651 lib/dynamic_debug.c 626 627 void __dynamic_pr_debug(struct _ddebug *descriptor, const char *fmt, ...) 628 { 629 va_list args; 630 struct va_format vaf; 631 char buf[PREFIX_SIZE] = ""; 632 633 BUG_ON(!descriptor); 634 BUG_ON(!fmt); 635 636 va_start(args, fmt); 637 638 vaf.fmt = fmt; 639 vaf.va = &args; 640 641 printk(KERN_DEBUG "%s%pV", dynamic_emit_prefix(descriptor, buf), &vaf); 642 643 if (descriptor->flags & _DPRINTK_FLAGS_PRINT_AUX) { 644 /* our model: 645 drm_trace_printf("%s%s[" DRM_NAME ":%ps] %pV", 646 dev ? dev_name(dev) : "", dev ? " " : "", 647 __builtin_return_address(0), &vaf); 648 */ 649 pr_info("reached check aux\n"); 650 > 651 if (descriptor->aux_channel) { 652 pr_info("calling aux\n"); 653 (*descriptor->aux_channel) 654 ("%s[DRM_mumble :%ps] %pV", buf, 655 __builtin_return_address(0), &vaf); 656 } 657 } 658 va_end(args); 659 } 660 EXPORT_SYMBOL(__dynamic_pr_debug); 661 --- 0-DAY CI Kernel Test Service, Intel Corporation https://lists.01.org/hyperkitty/list/kbuild-all@lists.01.org