Hi Amitay, Thank you for the patch! Perhaps something to improve: [auto build test WARNING on linux/master] [also build test WARNING on linus/master v5.16-rc5 next-20211214] [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/Amitay-Isaacs/fsi-sbefifo-Use-sp... base: https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git 136057256686de39cc3a07c2e39ef6bc43003ff6 config: h8300-randconfig-s032-20211214 (https://download.01.org/0day-ci/archive/20211215/202112151543.C2qA1wIs-lk...) compiler: h8300-linux-gcc (GCC) 11.2.0 reproduce: wget https://raw.githubusercontent.com/intel/lkp-tests/master/sbin/make.cross -O ~/bin/make.cross chmod +x ~/bin/make.cross # apt-get install sparse # sparse version: v0.6.4-dirty # https://github.com/0day-ci/linux/commit/abe81bc06079f76e9a9f4ebe6cc0a963e... git remote add linux-review https://github.com/0day-ci/linux git fetch --no-tags linux-review Amitay-Isaacs/fsi-sbefifo-Use-specified-value-of-start-of-response-timeout/20211215-090038 git checkout abe81bc06079f76e9a9f4ebe6cc0a963ee5b6985 # save the config file to linux build tree mkdir build_dir COMPILER_INSTALL_PATH=$HOME/0day COMPILER=gcc-11.2.0 make.cross C=1 CF='-fdiagnostic-prefix -D__CHECK_ENDIAN__' O=build_dir ARCH=h8300 SHELL=/bin/bash drivers/fsi/ If you fix the issue, kindly add following tag as appropriate Reported-by: kernel test robot <lkp(a)intel.com&gt; sparse warnings: (new ones prefixed by >>) drivers/fsi/fsi-sbefifo.c:956:31: sparse: expected void [noderef] __user **argp drivers/fsi/fsi-sbefifo.c:956:31: sparse: got void [noderef] __user * vim +956 drivers/fsi/fsi-sbefifo.c 952 953 static long sbefifo_user_ioctl(struct file *file, unsigned int cmd, unsigned long arg) 954 { 955 struct sbefifo_user *user = file->private_data; 957 int rc = -ENOTTY; 958 959 if (!user) 960 return -EINVAL; 961 962 mutex_lock(&user->file_lock); 963 switch (cmd) { 964 case FSI_SBEFIFO_READ_TIMEOUT: 965 rc = sbefifo_read_timeout(user, argp); 966 break; 967 } 968 mutex_unlock(&user->file_lock); 969 return rc; 970 } 971 --- 0-DAY CI Kernel Test Service, Intel Corporation https://lists.01.org/hyperkitty/list/kbuild-all@lists.01.org