Hi Hugues, I love your patch! Perhaps something to improve: [auto build test WARNING on linuxtv-media/master] [also build test WARNING on v5.9-rc8 next-20201007] [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/Hugues-Fruchet/media-ov5640-add-support-of-160x120-resolution/20201007-191213 base: git://linuxtv.org/media_tree.git master config: x86_64-randconfig-r032-20201005 (attached as .config) compiler: clang version 12.0.0 (https://github.com/llvm/llvm-project 4d1d8ae7100ec3c7e1709addb7b3ec6f9ad0b44f) 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 # https://github.com/0day-ci/linux/commit/457f07916fe31745cdcdcc5bfb011559a68c8b87 git remote add linux-review https://github.com/0day-ci/linux git fetch --no-tags linux-review Hugues-Fruchet/media-ov5640-add-support-of-160x120-resolution/20201007-191213 git checkout 457f07916fe31745cdcdcc5bfb011559a68c8b87 # 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/i2c/ov5640.c:420:31: warning: unused variable 'ov5640_setting_QQVGA_160_120' [-Wunused-const-variable] static const struct reg_value ov5640_setting_QQVGA_160_120[] = { ^ 1 warning generated. vim +/ov5640_setting_QQVGA_160_120 +420 drivers/media/i2c/ov5640.c 419 > 420 static const struct reg_value ov5640_setting_QQVGA_160_120[] = { 421 {0x3c07, 0x08, 0, 0}, 422 {0x3c09, 0x1c, 0, 0}, {0x3c0a, 0x9c, 0, 0}, {0x3c0b, 0x40, 0, 0}, 423 {0x3814, 0x31, 0, 0}, 424 {0x3815, 0x31, 0, 0}, {0x3800, 0x00, 0, 0}, {0x3801, 0x00, 0, 0}, 425 {0x3802, 0x00, 0, 0}, {0x3803, 0x04, 0, 0}, {0x3804, 0x0a, 0, 0}, 426 {0x3805, 0x3f, 0, 0}, {0x3806, 0x07, 0, 0}, {0x3807, 0x9b, 0, 0}, 427 {0x3810, 0x00, 0, 0}, 428 {0x3811, 0x10, 0, 0}, {0x3812, 0x00, 0, 0}, {0x3813, 0x06, 0, 0}, 429 {0x3618, 0x00, 0, 0}, {0x3612, 0x29, 0, 0}, {0x3708, 0x64, 0, 0}, 430 {0x3709, 0x52, 0, 0}, {0x370c, 0x03, 0, 0}, {0x3a02, 0x03, 0, 0}, 431 {0x3a03, 0xd8, 0, 0}, {0x3a08, 0x01, 0, 0}, {0x3a09, 0x27, 0, 0}, 432 {0x3a0a, 0x00, 0, 0}, {0x3a0b, 0xf6, 0, 0}, {0x3a0e, 0x03, 0, 0}, 433 {0x3a0d, 0x04, 0, 0}, {0x3a14, 0x03, 0, 0}, {0x3a15, 0xd8, 0, 0}, 434 {0x4001, 0x02, 0, 0}, {0x4004, 0x02, 0, 0}, 435 {0x4407, 0x04, 0, 0}, {0x5001, 0xa3, 0, 0}, 436 }; 437 --- 0-DAY CI Kernel Test Service, Intel Corporation https://lists.01.org/hyperkitty/list/kbuild-all@xxxxxxxxxxxx
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