Hi Jean-Philippe, I love your patch! Perhaps something to improve: [auto build test WARNING on char-misc/char-misc-testing] [also build test WARNING on soc/for-next linus/master v5.19-rc2 next-20220617] [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/intel-lab-lkp/linux/commits/Jean-Philippe-Brucker/uacce-Tidy-up-locking/20220620-220634 base: https://git.kernel.org/pub/scm/linux/kernel/git/gregkh/char-misc.git 0a35780c755ccec097d15c6b4ff8b246a89f1689 config: i386-randconfig-s001 (https://download.01.org/0day-ci/archive/20220621/202206210432.WVkOxVu5-lkp@xxxxxxxxx/config) compiler: gcc-11 (Debian 11.3.0-3) 11.3.0 reproduce: # apt-get install sparse # sparse version: v0.6.4-30-g92122700-dirty # https://github.com/intel-lab-lkp/linux/commit/3589b5391f54bea3dc85ed65fe0f036757a4f21c git remote add linux-review https://github.com/intel-lab-lkp/linux git fetch --no-tags linux-review Jean-Philippe-Brucker/uacce-Tidy-up-locking/20220620-220634 git checkout 3589b5391f54bea3dc85ed65fe0f036757a4f21c # save the config file mkdir build_dir && cp config build_dir/.config make W=1 C=1 CF='-fdiagnostic-prefix -D__CHECK_ENDIAN__' O=build_dir ARCH=i386 SHELL=/bin/bash drivers/misc/uacce/ If you fix the issue, kindly add following tag where applicable Reported-by: kernel test robot <lkp@xxxxxxxxx> sparse warnings: (new ones prefixed by >>) >> drivers/misc/uacce/uacce.c:291:21: sparse: sparse: incorrect type in assignment (different base types) @@ expected int ret @@ got restricted __poll_t @@ drivers/misc/uacce/uacce.c:291:21: sparse: expected int ret drivers/misc/uacce/uacce.c:291:21: sparse: got restricted __poll_t >> drivers/misc/uacce/uacce.c:295:16: sparse: sparse: incorrect type in return expression (different base types) @@ expected restricted __poll_t @@ got int ret @@ drivers/misc/uacce/uacce.c:295:16: sparse: expected restricted __poll_t drivers/misc/uacce/uacce.c:295:16: sparse: got int ret vim +291 drivers/misc/uacce/uacce.c 277 278 static __poll_t uacce_fops_poll(struct file *file, poll_table *wait) 279 { 280 struct uacce_queue *q = file->private_data; 281 struct uacce_device *uacce = q->uacce; 282 int ret = 0; 283 284 poll_wait(file, &q->wait, wait); 285 286 mutex_lock(&q->mutex); 287 if (!uacce_queue_is_valid(q)) 288 goto out_unlock; 289 290 if (uacce->ops->is_q_updated && uacce->ops->is_q_updated(q)) > 291 ret = EPOLLIN | EPOLLRDNORM; 292 293 out_unlock: 294 mutex_unlock(&q->mutex); > 295 return ret; 296 } 297 -- 0-DAY CI Kernel Test Service https://01.org/lkp
