[linux-next:master 11847/12015] drivers/md/md.c:8339:30: error: unused variable 'mdstat_proc_ops'

[kernel test robot <lkp@intel.com>]

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Hi Stephen,

First bad commit (maybe != root cause):

tree:   https://git.kernel.org/pub/scm/linux/kernel/git/next/linux-next.git master
head:   7800ca95d0ed11b492962dc3abc2181c9d5f7f82
commit: c3edca52a70e2f1ce3a323d3e9d637fcf52d53d6 [11847/12015] don't make the syscall checking produced errors from warnings
config: hexagon-randconfig-r041-20210906 (attached as .config)
compiler: clang version 14.0.0 (https://github.com/llvm/llvm-project 6fe2beba7d2a41964af658c8c59dd172683ef739)
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://git.kernel.org/pub/scm/linux/kernel/git/next/linux-next.git/commit/?id=c3edca52a70e2f1ce3a323d3e9d637fcf52d53d6
        git remote add linux-next https://git.kernel.org/pub/scm/linux/kernel/git/next/linux-next.git
        git fetch --no-tags linux-next master
        git checkout c3edca52a70e2f1ce3a323d3e9d637fcf52d53d6
        # save the attached .config to linux build tree
        COMPILER_INSTALL_PATH=$HOME/0day COMPILER=clang make.cross ARCH=hexagon 

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

All errors (new ones prefixed by >>):

>> drivers/md/md.c:8339:30: error: unused variable 'mdstat_proc_ops' [-Werror,-Wunused-const-variable]
   static const struct proc_ops mdstat_proc_ops = {
                                ^
   1 error generated.
--
   drivers/md/dm-integrity.c:1729:13: error: variable 'bi_sector' set but not used [-Werror,-Wunused-but-set-variable]
                           sector_t bi_sector = dio->bio_details.bi_iter.bi_sector;
                                    ^
>> drivers/md/dm-integrity.c:4075:12: error: result of comparison of constant 17179869180 with expression of type 'unsigned int' is always false [-Werror,-Wtautological-constant-out-of-range-compare]
                           if (val >= (uint64_t)UINT_MAX * 1000 / HZ) {
                               ~~~ ^  ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
   2 errors generated.
--
>> drivers/regulator/twl-regulator.c:559:34: error: unused variable 'twl_of_match' [-Werror,-Wunused-const-variable]
   static const struct of_device_id twl_of_match[] = {
                                    ^
   1 error generated.
--
>> drivers/regulator/twl6030-regulator.c:637:34: error: unused variable 'twl_of_match' [-Werror,-Wunused-const-variable]
   static const struct of_device_id twl_of_match[] = {
                                    ^
   1 error generated.
--
>> drivers/iio/accel/da280.c:170:36: error: unused variable 'da280_acpi_match' [-Werror,-Wunused-const-variable]
   static const struct acpi_device_id da280_acpi_match[] = {
                                      ^
   1 error generated.
--
   drivers/iio/accel/kxcjk-1013.c:321:3: error: unused variable 'odr_start_up_times' [-Werror,-Wunused-const-variable]
   } odr_start_up_times[KX_MAX_CHIPS][12] = {
     ^
>> drivers/iio/accel/kxcjk-1013.c:1706:36: error: unused variable 'kx_acpi_match' [-Werror,-Wunused-const-variable]
   static const struct acpi_device_id kx_acpi_match[] = {
                                      ^
   2 errors generated.
--
>> drivers/iio/accel/mma9551.c:594:36: error: unused variable 'mma9551_acpi_match' [-Werror,-Wunused-const-variable]
   static const struct acpi_device_id mma9551_acpi_match[] = {
                                      ^
   1 error generated.
--
>> drivers/iio/accel/stk8ba50.c:538:36: error: unused variable 'stk8ba50_acpi_id' [-Werror,-Wunused-const-variable]
   static const struct acpi_device_id stk8ba50_acpi_id[] = {
                                      ^
   1 error generated.
--
>> drivers/iio/light/ltr501.c:1568:36: error: unused variable 'ltr_acpi_match' [-Werror,-Wunused-const-variable]
   static const struct acpi_device_id ltr_acpi_match[] = {
                                      ^
   1 error generated.
--
>> drivers/iio/light/stk3310.c:674:36: error: unused variable 'stk3310_acpi_id' [-Werror,-Wunused-const-variable]
   static const struct acpi_device_id stk3310_acpi_id[] = {
                                      ^
   1 error generated.
--
>> drivers/iio/magnetometer/bmc150_magn_i2c.c:42:36: error: unused variable 'bmc150_magn_acpi_match' [-Werror,-Wunused-const-variable]
   static const struct acpi_device_id bmc150_magn_acpi_match[] = {
                                      ^
   1 error generated.
..


vim +/mdstat_proc_ops +8339 drivers/md/md.c

d7603b7e3a7f80 NeilBrown       2006-01-06  8338  
97a32539b9568b Alexey Dobriyan 2020-02-03 @8339  static const struct proc_ops mdstat_proc_ops = {
97a32539b9568b Alexey Dobriyan 2020-02-03  8340  	.proc_open	= md_seq_open,
97a32539b9568b Alexey Dobriyan 2020-02-03  8341  	.proc_read	= seq_read,
97a32539b9568b Alexey Dobriyan 2020-02-03  8342  	.proc_lseek	= seq_lseek,
97a32539b9568b Alexey Dobriyan 2020-02-03  8343  	.proc_release	= seq_release,
97a32539b9568b Alexey Dobriyan 2020-02-03  8344  	.proc_poll	= mdstat_poll,
^1da177e4c3f41 Linus Torvalds  2005-04-16  8345  };
^1da177e4c3f41 Linus Torvalds  2005-04-16  8346  

:::::: The code at line 8339 was first introduced by commit
:::::: 97a32539b9568bb653683349e5a76d02ff3c3e2c proc: convert everything to "struct proc_ops"

:::::: TO: Alexey Dobriyan <adobriyan@gmail.com>
:::::: CC: Linus Torvalds <torvalds@linux-foundation.org>

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

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