[anolis-intel-cloud:devel-5.10 1/1] drivers/iommu/ioasid.c:279: warning: Cannot understand * @brief Reserve capacity from the system pool

[anolis-intel-cloud:devel-5.10 1/1] drivers/iommu/ioasid.c:279: warning: Cannot understand * @brief Reserve capacity from the system pool

[kernel test robot]

tree:   https://gitee.com/anolis/intel-cloud-kernel.git devel-5.10
head:   3c59fae63abb869e722a6b1d048bd4501e4bc5bf
commit: 7ee0f38cdf9a18c8f6fe075090a3f5105be117d1 [1/1] iommu/ioasid: Support setting system-wide capacity
config: x86_64-anolis-intel-cloud-devel-5.10 (https://download.01.org/0day-ci/archive/20250306/202503061023.RAfFTXb2-lkp@intel.com/config)
compiler: gcc-12 (Debian 12.2.0-14) 12.2.0
reproduce (this is a W=1 build): (https://download.01.org/0day-ci/archive/20250306/202503061023.RAfFTXb2-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@intel.com>
| Closes: https://lore.kernel.org/oe-kbuild-all/202503061023.RAfFTXb2-lkp@intel.com/

All warnings (new ones prefixed by >>):

>> drivers/iommu/ioasid.c:279: warning: Cannot understand  * @brief Reserve capacity from the system pool
    on line 279 - I thought it was a doc line
>> drivers/iommu/ioasid.c:306: warning: Cannot understand  * @brief Return capacity to the system pool
    on line 306 - I thought it was a doc line
   drivers/iommu/ioasid.c:458: warning: Function parameter or member 'ioasid' not described in 'ioasid_get'


vim +279 drivers/iommu/ioasid.c

   277	
   278	/**
 > 279	 * @brief Reserve capacity from the system pool
   280	 *
   281	 * @param nr_ioasid Number of IOASIDs requested to be reserved, 0 means
   282	 *	reserve all remaining IDs.
   283	 *
   284	 * @return the remaining capacity on success, or errno
   285	 */
   286	int ioasid_reserve_capacity(ioasid_t nr_ioasid)
   287	{
   288		int ret = 0;
   289	
   290		spin_lock(&ioasid_allocator_lock);
   291		if (nr_ioasid > ioasid_capacity_avail) {
   292			ret = -ENOSPC;
   293			goto done_unlock;
   294		}
   295		if (!nr_ioasid)
   296			nr_ioasid = ioasid_capacity_avail;
   297		ioasid_capacity_avail -= nr_ioasid;
   298		ret = nr_ioasid;
   299	done_unlock:
   300		spin_unlock(&ioasid_allocator_lock);
   301		return ret;
   302	}
   303	EXPORT_SYMBOL_GPL(ioasid_reserve_capacity);
   304	
   305	/**
 > 306	 * @brief Return capacity to the system pool
   307	 * 	We trust the caller not to return more than it has reserved, we could
   308	 * 	also track reservation if needed.
   309	 *
   310	 * @param nr_ioasid Number of IOASIDs requested to be returned
   311	 *
   312	 * @return the remaining capacity on success, or errno
   313	 */
   314	int ioasid_cancel_capacity(ioasid_t nr_ioasid)
   315	{
   316		int ret = 0;
   317	
   318		spin_lock(&ioasid_allocator_lock);
   319		if (nr_ioasid + ioasid_capacity_avail > ioasid_capacity) {
   320			ret = -EINVAL;
   321			goto done_unlock;
   322		}
   323		ioasid_capacity_avail += nr_ioasid;
   324		ret = ioasid_capacity_avail;
   325	done_unlock:
   326		spin_unlock(&ioasid_allocator_lock);
   327		return ret;
   328	}
   329	EXPORT_SYMBOL_GPL(ioasid_cancel_capacity);
   330	

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