fs/nfsd/nfs4xdr.c:2004:9: warning: Identical condition 'status', second condition is always false

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

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CC: kbuild-all(a)lists.01.org
CC: linux-kernel(a)vger.kernel.org
TO: Frank van der Linden <fllinden@amazon.com>
CC: Chuck Lever <chuck.lever@oracle.com>

tree:   https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git master
head:   407ab579637ced6dc32cfb2295afb7259cca4b22
commit: 23e50fe3a5e6045a573c69d4b0e3d78aa6183323 nfsd: implement the xattr functions and en/decode logic
date:   4 months ago
:::::: branch date: 8 hours ago
:::::: commit date: 4 months ago
compiler: h8300-linux-gcc (GCC) 9.3.0

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


cppcheck possible warnings: (new ones prefixed by >>, may not real problems)

>> fs/nfsd/nfs4xdr.c:2004:9: warning: Identical condition 'status', second condition is always false [identicalConditionAfterEarlyExit]
    return status;
           ^
   fs/nfsd/nfs4xdr.c:1996:6: note: first condition
    if (status)
        ^
   fs/nfsd/nfs4xdr.c:2004:9: note: second condition
    return status;
           ^
   fs/nfsd/nfs4xdr.c:1013:2: warning: Variable 'p' is reassigned a value before the old one has been used. 'break;' missing? [redundantAssignInSwitch]
    READ_BUF(4);
    ^
   fs/nfsd/nfs4xdr.c:991:4: note: Variable 'p' is reassigned a value before the old one has been used. 'break;' missing?
      COPYMEM(open->op_verf.data, NFS4_VERIFIER_SIZE);
      ^
   fs/nfsd/nfs4xdr.c:1013:2: note: Variable 'p' is reassigned a value before the old one has been used. 'break;' missing?
    READ_BUF(4);
    ^

vim +/status +2004 fs/nfsd/nfs4xdr.c

23e50fe3a5e6045 Frank van der Linden 2020-06-23  1981  
23e50fe3a5e6045 Frank van der Linden 2020-06-23  1982  /*
23e50fe3a5e6045 Frank van der Linden 2020-06-23  1983   * A GETXATTR op request comes without a length specifier. We just set the
23e50fe3a5e6045 Frank van der Linden 2020-06-23  1984   * maximum length for the reply based on XATTR_SIZE_MAX and the maximum
23e50fe3a5e6045 Frank van der Linden 2020-06-23  1985   * channel reply size. nfsd_getxattr will probe the length of the xattr,
23e50fe3a5e6045 Frank van der Linden 2020-06-23  1986   * check it against getxa_len, and allocate + return the value.
23e50fe3a5e6045 Frank van der Linden 2020-06-23  1987   */
23e50fe3a5e6045 Frank van der Linden 2020-06-23  1988  static __be32
23e50fe3a5e6045 Frank van der Linden 2020-06-23  1989  nfsd4_decode_getxattr(struct nfsd4_compoundargs *argp,
23e50fe3a5e6045 Frank van der Linden 2020-06-23  1990  		      struct nfsd4_getxattr *getxattr)
23e50fe3a5e6045 Frank van der Linden 2020-06-23  1991  {
23e50fe3a5e6045 Frank van der Linden 2020-06-23  1992  	__be32 status;
23e50fe3a5e6045 Frank van der Linden 2020-06-23  1993  	u32 maxcount;
23e50fe3a5e6045 Frank van der Linden 2020-06-23  1994  
23e50fe3a5e6045 Frank van der Linden 2020-06-23  1995  	status = nfsd4_decode_xattr_name(argp, &getxattr->getxa_name);
23e50fe3a5e6045 Frank van der Linden 2020-06-23  1996  	if (status)
23e50fe3a5e6045 Frank van der Linden 2020-06-23  1997  		return status;
23e50fe3a5e6045 Frank van der Linden 2020-06-23  1998  
23e50fe3a5e6045 Frank van der Linden 2020-06-23  1999  	maxcount = svc_max_payload(argp->rqstp);
23e50fe3a5e6045 Frank van der Linden 2020-06-23  2000  	maxcount = min_t(u32, XATTR_SIZE_MAX, maxcount);
23e50fe3a5e6045 Frank van der Linden 2020-06-23  2001  
23e50fe3a5e6045 Frank van der Linden 2020-06-23  2002  	getxattr->getxa_len = maxcount;
23e50fe3a5e6045 Frank van der Linden 2020-06-23  2003  
23e50fe3a5e6045 Frank van der Linden 2020-06-23 @2004  	return status;
23e50fe3a5e6045 Frank van der Linden 2020-06-23  2005  }
23e50fe3a5e6045 Frank van der Linden 2020-06-23  2006  

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