Hi Helen, I love your patch! Perhaps something to improve: [auto build test WARNING on linuxtv-media/master] [also build test WARNING on v5.8 next-20200806] [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/Helen-Koike/media-v4l2-Add-extended-fmt-and-buffer-ioctls/20200805-033507 base: git://linuxtv.org/media_tree.git master config: x86_64-randconfig-a013-20200806 (attached as .config) compiler: clang version 12.0.0 (https://github.com/llvm/llvm-project 076b120bebfd727b502208601012a44ab2e1028e) 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 x86_64 cross compiling tool for clang build # apt-get install binutils-x86-64-linux-gnu # save the attached .config to linux build tree COMPILER_INSTALL_PATH=$HOME/0day COMPILER=clang make.cross ARCH=x86_64 If you fix the issue, kindly add following tag as appropriate Reported-by: kernel test robot <lkp@xxxxxxxxx> All warnings (new ones prefixed by >>): >> drivers/media/v4l2-core/v4l2-ioctl.c:538:3: warning: format specifies type 'unsigned int' but the argument has type '__u64' (aka 'unsigned long long') [-Wformat] e->flags, prt_names(e->field, v4l2_field_names), e->sequence); ^~~~~~~~ include/linux/printk.h:380:26: note: expanded from macro 'pr_cont' printk(KERN_CONT fmt, ##__VA_ARGS__) ~~~ ^~~~~~~~~~~ 1 warning generated. vim +538 drivers/media/v4l2-core/v4l2-ioctl.c 529 530 static void v4l_print_ext_buffer(const void *arg, bool write_only) 531 { 532 const struct v4l2_ext_buffer *e = arg; 533 const struct v4l2_ext_plane *plane; 534 unsigned int i; 535 536 pr_cont("%lld index=%d, type=%s, flags=0x%08x, field=%s, sequence=%d\n", 537 e->timestamp, e->index, prt_names(e->type, v4l2_type_names), > 538 e->flags, prt_names(e->field, v4l2_field_names), e->sequence); 539 540 for (i = 0; i < VIDEO_MAX_PLANES && 541 e->planes[i].buffer_length; i++) { 542 plane = &e->planes[i]; 543 pr_debug("plane %d: buffer_length=%d, plane_length=%d offset=0x%08x, memory=%s\n", 544 i, plane->buffer_length, plane->plane_length, 545 plane->offset, 546 prt_names(plane->memory, v4l2_memory_names)); 547 } 548 } 549 --- 0-DAY CI Kernel Test Service, Intel Corporation https://lists.01.org/hyperkitty/list/kbuild-all@xxxxxxxxxxxx
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