[PATCH v2 3/3] soc: nuvoton: add NPCM BPC driver

[kernel test robot]

Hi Tomer,

kernel test robot noticed the following build warnings:

[auto build test WARNING on soc/for-next]
[also build test WARNING on robh/for-next linus/master v6.7-rc5 next-20231212]
[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/Tomer-Maimon/dt-bindings-soc-nuvoton-Add-NPCM-BPC/20231212-181115
base:   https://git.kernel.org/pub/scm/linux/kernel/git/soc/soc.git for-next
patch link:    https://lore.kernel.org/r/20231212100703.3374555-4-tmaimon77%40gmail.com
patch subject: [PATCH v2 3/3] soc: nuvoton: add NPCM BPC driver
config: arm64-randconfig-r112-20231213 (https://download.01.org/0day-ci/archive/20231213/202312130836.kt5QMxGM-lkp@intel.com/config)
compiler: clang version 17.0.0 (https://github.com/llvm/llvm-project.git 4a5ac14ee968ff0ad5d2cc1ffa0299048db4c88a)
reproduce: (https://download.01.org/0day-ci/archive/20231213/202312130836.kt5QMxGM-lkp@intel.com/reproduce)

If you fix the issue in a separate patch/commit (i.e. not just a new version of
the same patch/commit), kindly add following tags
| Reported-by: kernel test robot <lkp at intel.com>
| Closes: https://lore.kernel.org/oe-kbuild-all/202312130836.kt5QMxGM-lkp@intel.com/

sparse warnings: (new ones prefixed by >>)
>> drivers/soc/nuvoton/npcm-bpc.c:105:22: sparse: sparse: invalid assignment: |=
>> drivers/soc/nuvoton/npcm-bpc.c:105:22: sparse:    left side has type restricted __poll_t
>> drivers/soc/nuvoton/npcm-bpc.c:105:22: sparse:    right side has type int
   drivers/soc/nuvoton/npcm-bpc.c:108:22: sparse: sparse: invalid assignment: |=
   drivers/soc/nuvoton/npcm-bpc.c:108:22: sparse:    left side has type restricted __poll_t
   drivers/soc/nuvoton/npcm-bpc.c:108:22: sparse:    right side has type int

vim +105 drivers/soc/nuvoton/npcm-bpc.c

    97	
    98	static __poll_t npcm_bpc_poll(struct file *file, struct poll_table_struct *pt)
    99	{
   100		struct npcm_bpc_channel *chan = npcm_file_to_ch(file);
   101		__poll_t mask = 0;
   102	
   103		poll_wait(file, &chan->wq, pt);
   104		if (!kfifo_is_empty(&chan->fifo))
 > 105			mask |= POLLIN;
   106	
   107		if (chan->host_reset) {
   108			mask |= POLLHUP;
   109			chan->host_reset = false;
   110		}
   111	
   112		return mask;
   113	}
   114	

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