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Subjectdrivers/remoteproc/remoteproc_debugfs.c:395:31: sparse: sparse: incorrect type in return expression (different base types)
tree:   https://github.com/0day-ci/linux/commits/UPDATE-20220105-144328/Miaoqian-Lin/remoteproc-Fix-NULL-vs-IS_ERR-checking-in-rproc_create_trace_file/20211227-170725
head: e2c26738760efa9568ce3fef6180fb4311e28d08
commit: e2c26738760efa9568ce3fef6180fb4311e28d08 remoteproc: Fix NULL vs IS_ERR() checking in rproc_create_trace_file
date: 5 hours ago
config: powerpc-randconfig-s031-20220105 (https://download.01.org/0day-ci/archive/20220105/202201051942.CihtR2Ia-lkp@intel.com/config)
compiler: powerpc-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/e2c26738760efa9568ce3fef6180fb4311e28d08
git remote add linux-review https://github.com/0day-ci/linux
git fetch --no-tags linux-review UPDATE-20220105-144328/Miaoqian-Lin/remoteproc-Fix-NULL-vs-IS_ERR-checking-in-rproc_create_trace_file/20211227-170725
git checkout e2c26738760efa9568ce3fef6180fb4311e28d08
# 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=powerpc SHELL=/bin/bash drivers/input/touchscreen/ drivers/remoteproc/

If you fix the issue, kindly add following tag as appropriate
Reported-by: kernel test robot <lkp@intel.com>


sparse warnings: (new ones prefixed by >>)
>> drivers/remoteproc/remoteproc_debugfs.c:395:31: sparse: sparse: incorrect type in return expression (different base types) @@ expected struct dentry * @@ got long @@
drivers/remoteproc/remoteproc_debugfs.c:395:31: sparse: expected struct dentry *
drivers/remoteproc/remoteproc_debugfs.c:395:31: sparse: got long

vim +395 drivers/remoteproc/remoteproc_debugfs.c

385
386 struct dentry *rproc_create_trace_file(const char *name, struct rproc *rproc,
387 struct rproc_debug_trace *trace)
388 {
389 struct dentry *tfile;
390
391 tfile = debugfs_create_file(name, 0400, rproc->dbg_dir, trace,
392 &trace_rproc_ops);
393 if (IS_ERR(tfile)) {
394 dev_err(&rproc->dev, "failed to create debugfs trace entry\n");
> 395 return PTR_ERR(tfile);
396 }
397
398 return tfile;
399 }
400

---
0-DAY CI Kernel Test Service, Intel Corporation
https://lists.01.org/hyperkitty/list/kbuild-all@lists.01.org

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