Hi Maximilian, Thank you for the patch! Perhaps something to improve: [auto build test WARNING on dtor-input/next] [also build test WARNING on dtor-input/for-linus linus/master v6.3-rc4 next-20230327] [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/Maximilian-Weigand/Input-cyttsp5-fix-array-length/20230323-215957 base: https://git.kernel.org/pub/scm/linux/kernel/git/dtor/input.git next patch link: https://lore.kernel.org/r/20230323135205.1160879-3-mweigand%40mweigand.net patch subject: [PATCH 2/6] Input: cyttsp5: remove unused code config: i386-randconfig-a011-20230327 (https://download.01.org/0day-ci/archive/20230327/202303272323.nRNi9Sso-lkp@xxxxxxxxx/config) compiler: clang version 14.0.6 (https://github.com/llvm/llvm-project f28c006a5895fc0e329fe15fead81e37457cb1d1) 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/intel-lab-lkp/linux/commit/4358a60821eb8149dabed197c09d3c0eab63bf38 git remote add linux-review https://github.com/intel-lab-lkp/linux git fetch --no-tags linux-review Maximilian-Weigand/Input-cyttsp5-fix-array-length/20230323-215957 git checkout 4358a60821eb8149dabed197c09d3c0eab63bf38 # save the config file mkdir build_dir && cp config build_dir/.config COMPILER_INSTALL_PATH=$HOME/0day COMPILER=clang make.cross W=1 O=build_dir ARCH=i386 olddefconfig COMPILER_INSTALL_PATH=$HOME/0day COMPILER=clang make.cross W=1 O=build_dir ARCH=i386 SHELL=/bin/bash drivers/input/touchscreen/ If you fix the issue, kindly add following tag where applicable | Reported-by: kernel test robot <lkp@xxxxxxxxx> | Link: https://lore.kernel.org/oe-kbuild-all/202303272323.nRNi9Sso-lkp@xxxxxxxxx/ All warnings (new ones prefixed by >>): >> drivers/input/touchscreen/cyttsp5.c:604:5: warning: unused variable 'cmd' [-Wunused-variable] u8 cmd[2]; ^ 1 warning generated. vim +/cmd +604 drivers/input/touchscreen/cyttsp5.c 5b0c03e24a061f Alistair Francis 2022-10-31 598 5b0c03e24a061f Alistair Francis 2022-10-31 599 static int cyttsp5_get_hid_descriptor(struct cyttsp5 *ts, 5b0c03e24a061f Alistair Francis 2022-10-31 600 struct cyttsp5_hid_desc *desc) 5b0c03e24a061f Alistair Francis 2022-10-31 601 { 5b0c03e24a061f Alistair Francis 2022-10-31 602 struct device *dev = ts->dev; 5b0c03e24a061f Alistair Francis 2022-10-31 603 int rc; 5b0c03e24a061f Alistair Francis 2022-10-31 @604 u8 cmd[2]; 5b0c03e24a061f Alistair Francis 2022-10-31 605 5b0c03e24a061f Alistair Francis 2022-10-31 606 rc = cyttsp5_write(ts, HID_DESC_REG, NULL, 0); 5b0c03e24a061f Alistair Francis 2022-10-31 607 if (rc) { 5b0c03e24a061f Alistair Francis 2022-10-31 608 dev_err(dev, "Failed to get HID descriptor, rc=%d\n", rc); 5b0c03e24a061f Alistair Francis 2022-10-31 609 return rc; 5b0c03e24a061f Alistair Francis 2022-10-31 610 } 5b0c03e24a061f Alistair Francis 2022-10-31 611 5b0c03e24a061f Alistair Francis 2022-10-31 612 rc = wait_for_completion_interruptible_timeout(&ts->cmd_done, 5b0c03e24a061f Alistair Francis 2022-10-31 613 msecs_to_jiffies(CY_HID_GET_HID_DESCRIPTOR_TIMEOUT_MS)); 5b0c03e24a061f Alistair Francis 2022-10-31 614 if (rc <= 0) { 5b0c03e24a061f Alistair Francis 2022-10-31 615 dev_err(ts->dev, "HID get descriptor timed out\n"); 5b0c03e24a061f Alistair Francis 2022-10-31 616 rc = -ETIMEDOUT; 5b0c03e24a061f Alistair Francis 2022-10-31 617 return rc; 5b0c03e24a061f Alistair Francis 2022-10-31 618 } 5b0c03e24a061f Alistair Francis 2022-10-31 619 5b0c03e24a061f Alistair Francis 2022-10-31 620 memcpy(desc, ts->response_buf, sizeof(*desc)); 5b0c03e24a061f Alistair Francis 2022-10-31 621 5b0c03e24a061f Alistair Francis 2022-10-31 622 /* Check HID descriptor length and version */ 5b0c03e24a061f Alistair Francis 2022-10-31 623 if (le16_to_cpu(desc->hid_desc_len) != sizeof(*desc) || 5b0c03e24a061f Alistair Francis 2022-10-31 624 le16_to_cpu(desc->bcd_version) != HID_VERSION) { 5b0c03e24a061f Alistair Francis 2022-10-31 625 dev_err(dev, "Unsupported HID version\n"); 5b0c03e24a061f Alistair Francis 2022-10-31 626 return -ENODEV; 5b0c03e24a061f Alistair Francis 2022-10-31 627 } 5b0c03e24a061f Alistair Francis 2022-10-31 628 5b0c03e24a061f Alistair Francis 2022-10-31 629 return 0; 5b0c03e24a061f Alistair Francis 2022-10-31 630 } 5b0c03e24a061f Alistair Francis 2022-10-31 631 -- 0-DAY CI Kernel Test Service https://github.com/intel/lkp-tests
