[jlayton:dir-deleg 15/26] fs/nfsd/nfs4xdr.c:4109:18: sparse: sparse: incorrect type in assignment (different base types)

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

tree:   https://git.kernel.org/pub/scm/linux/kernel/git/jlayton/linux.git dir-deleg
head:   23dab10e6368fed23984781ef9a247fc242498da
commit: 17ead909b8fe2314cec2ea3ffe9ccc2492c9c3c9 [15/26] nfsd: add notification handlers for dir events
config: csky-randconfig-r111-20260331 (https://download.01.org/0day-ci/archive/20260401/202604010359.hffRSjbm-lkp@intel.com/config)
compiler: csky-linux-gcc (GCC) 15.2.0
sparse: v0.6.5-rc1
reproduce (this is a W=1 build): (https://download.01.org/0day-ci/archive/20260401/202604010359.hffRSjbm-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/202604010359.hffRSjbm-lkp@intel.com/

sparse warnings: (new ones prefixed by >>)
>> fs/nfsd/nfs4xdr.c:4109:18: sparse: sparse: incorrect type in assignment (different base types) @@     expected unsigned int [usertype] *attrmask @@     got restricted __be32 [usertype] * @@
   fs/nfsd/nfs4xdr.c:4109:18: sparse:     expected unsigned int [usertype] *attrmask
   fs/nfsd/nfs4xdr.c:4109:18: sparse:     got restricted __be32 [usertype] *

vim +4109 fs/nfsd/nfs4xdr.c

  4100	
  4101	static bool
  4102	nfsd4_setup_notify_entry4(struct notify_entry4 *ne, struct xdr_stream *xdr,
  4103				  struct dentry *dentry, struct nfs4_delegation *dp,
  4104				  struct nfsd_file *nf, char *name, u32 namelen)
  4105	{
  4106		uint32_t *attrmask;
  4107	
  4108		/* Reserve space for attrmask */
> 4109		attrmask = xdr_reserve_space(xdr, 3 * sizeof(uint32_t));
  4110		if (!attrmask)
  4111			return false;
  4112	
  4113		ne->ne_file.data = name;
  4114		ne->ne_file.len = namelen;
  4115		ne->ne_attrs.attrmask.element = attrmask;
  4116	
  4117		attrmask[0] = 0;
  4118		attrmask[1] = 0;
  4119		attrmask[2] = 0;
  4120		ne->ne_attrs.attr_vals.data = NULL;
  4121		ne->ne_attrs.attr_vals.len = 0;
  4122		ne->ne_attrs.attrmask.count = 1;
  4123		return true;
  4124	}
  4125	

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