Hi Alistair, Thank you for the patch! Perhaps something to improve: [auto build test WARNING on dtor-input/next] [also build test WARNING on shawnguo/for-next linus/master v5.19 next-20220805] [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#_base_tree_information] url: https://github.com/intel-lab-lkp/linux/commits/Alistair-Francis/Add-support-for-the-Cypress-cyttsp5/20220802-210032 base: https://git.kernel.org/pub/scm/linux/kernel/git/dtor/input.git next config: um-allmodconfig (https://download.01.org/0day-ci/archive/20220806/202208061128.pfj2DRWO-lkp@xxxxxxxxx/config) compiler: gcc-11 (Debian 11.3.0-3) 11.3.0 reproduce (this is a W=1 build): # https://github.com/intel-lab-lkp/linux/commit/9c372983ef0b8eb7ad48c025a156f80943269af7 git remote add linux-review https://github.com/intel-lab-lkp/linux git fetch --no-tags linux-review Alistair-Francis/Add-support-for-the-Cypress-cyttsp5/20220802-210032 git checkout 9c372983ef0b8eb7ad48c025a156f80943269af7 # save the config file mkdir build_dir && cp config build_dir/.config make W=1 O=build_dir ARCH=um SHELL=/bin/bash If you fix the issue, kindly add following tag where applicable Reported-by: kernel test robot <lkp@xxxxxxxxx> All warnings (new ones prefixed by >>): drivers/input/touchscreen/cyttsp5.c: In function 'cyttsp5_handle_irq': >> drivers/input/touchscreen/cyttsp5.c:254:31: warning: array subscript 'int[0]' is partly outside array bounds of 'u8[1]' {aka 'unsigned char[1]'} [-Warray-bounds] 254 | for (nbyte = 0, *axis = 0; nbyte < size; nbyte++) | ~~~~~~^~~ drivers/input/touchscreen/cyttsp5.c:333:12: note: while referencing 'num_cur_tch' 333 | u8 num_cur_tch; | ^~~~~~~~~~~ drivers/input/touchscreen/cyttsp5.c:257:15: warning: array subscript 'int[0]' is partly outside array bounds of 'u8[1]' {aka 'unsigned char[1]'} [-Warray-bounds] 257 | *axis &= max - 1; | ^~ drivers/input/touchscreen/cyttsp5.c:333:12: note: while referencing 'num_cur_tch' 333 | u8 num_cur_tch; | ^~~~~~~~~~~ drivers/input/touchscreen/cyttsp5.c:257:15: warning: array subscript 'int[0]' is partly outside array bounds of 'u8[1]' {aka 'unsigned char[1]'} [-Warray-bounds] 257 | *axis &= max - 1; | ~~~~~~^~~~~~~~~~ drivers/input/touchscreen/cyttsp5.c:333:12: note: while referencing 'num_cur_tch' 333 | u8 num_cur_tch; | ^~~~~~~~~~~ drivers/input/touchscreen/cyttsp5.c:255:23: warning: array subscript 'int[0]' is partly outside array bounds of 'u8[1]' {aka 'unsigned char[1]'} [-Warray-bounds] 255 | *axis += ((xy_data[nbyte] >> bofs) << (nbyte * 8)); | ^~ drivers/input/touchscreen/cyttsp5.c:333:12: note: while referencing 'num_cur_tch' 333 | u8 num_cur_tch; | ^~~~~~~~~~~ drivers/input/touchscreen/cyttsp5.c:255:23: warning: array subscript 'int[0]' is partly outside array bounds of 'u8[1]' {aka 'unsigned char[1]'} [-Warray-bounds] 255 | *axis += ((xy_data[nbyte] >> bofs) << (nbyte * 8)); | ~~~~~~^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ drivers/input/touchscreen/cyttsp5.c:333:12: note: while referencing 'num_cur_tch' 333 | u8 num_cur_tch; | ^~~~~~~~~~~ vim +254 drivers/input/touchscreen/cyttsp5.c 248 249 static void cyttsp5_get_touch_axis(int *axis, int size, int max, u8 *xy_data, 250 int bofs) 251 { 252 int nbyte; 253 > 254 for (nbyte = 0, *axis = 0; nbyte < size; nbyte++) 255 *axis += ((xy_data[nbyte] >> bofs) << (nbyte * 8)); 256 257 *axis &= max - 1; 258 } 259 -- 0-DAY CI Kernel Test Service https://01.org/lkp
