Hi Yizhuo, Thank you for the patch! Yet something to improve: [auto build test ERROR on linus/master] [also build test ERROR on v5.17-rc2 next-20220131] [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/Yizhuo-Zhai/fbdev-fbmem-Fix-the-implicit-type-casting/20220131-150528 base: https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git 26291c54e111ff6ba87a164d85d4a4e134b7315c config: i386-randconfig-c001-20220131 (https://download.01.org/0day-ci/archive/20220131/202201311943.VXU6K1gH-lkp@xxxxxxxxx/config) compiler: gcc-9 (Debian 9.3.0-22) 9.3.0 reproduce (this is a W=1 build): # https://github.com/0day-ci/linux/commit/b8f540468e70290c8278fc2611adc2f9b38f821f git remote add linux-review https://github.com/0day-ci/linux git fetch --no-tags linux-review Yizhuo-Zhai/fbdev-fbmem-Fix-the-implicit-type-casting/20220131-150528 git checkout b8f540468e70290c8278fc2611adc2f9b38f821f # save the config file to linux build tree mkdir build_dir make W=1 O=build_dir ARCH=i386 SHELL=/bin/bash If you fix the issue, kindly add following tag as appropriate Reported-by: kernel test robot <lkp@xxxxxxxxx> All errors (new ones prefixed by >>): >> drivers/video/fbdev/core/fbmem.c:1067:1: error: conflicting types for 'fb_blank' 1067 | fb_blank(struct fb_info *info, unsigned long blank) | ^~~~~~~~ In file included from drivers/video/fbdev/core/fbmem.c:34: include/linux/fb.h:591:12: note: previous declaration of 'fb_blank' was here 591 | extern int fb_blank(struct fb_info *info, int blank); | ^~~~~~~~ In file included from include/linux/linkage.h:7, from arch/x86/include/asm/cache.h:5, from include/linux/cache.h:6, from include/linux/time.h:5, from include/linux/stat.h:19, from include/linux/module.h:13, from drivers/video/fbdev/core/fbmem.c:14: drivers/video/fbdev/core/fbmem.c:1086:15: error: conflicting types for 'fb_blank' 1086 | EXPORT_SYMBOL(fb_blank); | ^~~~~~~~ include/linux/export.h:98:21: note: in definition of macro '___EXPORT_SYMBOL' 98 | extern typeof(sym) sym; \ | ^~~ include/linux/export.h:160:34: note: in expansion of macro '__EXPORT_SYMBOL' 160 | #define _EXPORT_SYMBOL(sym, sec) __EXPORT_SYMBOL(sym, sec, "") | ^~~~~~~~~~~~~~~ include/linux/export.h:163:29: note: in expansion of macro '_EXPORT_SYMBOL' 163 | #define EXPORT_SYMBOL(sym) _EXPORT_SYMBOL(sym, "") | ^~~~~~~~~~~~~~ drivers/video/fbdev/core/fbmem.c:1086:1: note: in expansion of macro 'EXPORT_SYMBOL' 1086 | EXPORT_SYMBOL(fb_blank); | ^~~~~~~~~~~~~ In file included from drivers/video/fbdev/core/fbmem.c:34: include/linux/fb.h:591:12: note: previous declaration of 'fb_blank' was here 591 | extern int fb_blank(struct fb_info *info, int blank); | ^~~~~~~~ vim +/fb_blank +1067 drivers/video/fbdev/core/fbmem.c 1065 1066 int > 1067 fb_blank(struct fb_info *info, unsigned long blank) 1068 { 1069 struct fb_event event; 1070 int ret = -EINVAL; 1071 1072 if (blank > FB_BLANK_POWERDOWN) 1073 blank = FB_BLANK_POWERDOWN; 1074 1075 event.info = info; 1076 event.data = ␣ 1077 1078 if (info->fbops->fb_blank) 1079 ret = info->fbops->fb_blank(blank, info); 1080 1081 if (!ret) 1082 fb_notifier_call_chain(FB_EVENT_BLANK, &event); 1083 1084 return ret; 1085 } 1086 EXPORT_SYMBOL(fb_blank); 1087 --- 0-DAY CI Kernel Test Service, Intel Corporation https://lists.01.org/hyperkitty/list/kbuild-all@xxxxxxxxxxxx
