sunrpc: properly type argument to kxdrdproc_t

Pass struct rpc_request as the first argument instead of an untyped blob.
Signed-off-by: Christoph Hellwig <hch@lst.de>
Reviewed-by: Jeff Layton <jlayton@redhat.com>
Acked-by: Trond Myklebust <trond.myklebust@primarydata.com>

include/linux/sunrpc/xdr.h

@@ -226,7 +226,8 @@ struct xdr_stream {
  */
 typedef void	(*kxdreproc_t)(struct rpc_rqst *rqstp, struct xdr_stream *xdr,
 		const void *obj);
-typedef int	(*kxdrdproc_t)(void *rqstp, struct xdr_stream *xdr, void *obj);
+typedef int	(*kxdrdproc_t)(struct rpc_rqst *rqstp, struct xdr_stream *xdr,
+		void *obj);
 
 extern void xdr_init_encode(struct xdr_stream *xdr, struct xdr_buf *buf, __be32 *p);
 extern __be32 *xdr_reserve_space(struct xdr_stream *xdr, size_t nbytes);

net/sunrpc/clnt.c

@@ -2481,7 +2481,8 @@ static void rpcproc_encode_null(struct rpc_rqst *rqstp, struct xdr_stream *xdr,
 {
 }
 
-static int rpcproc_decode_null(void *rqstp, struct xdr_stream *xdr, void *obj)
+static int rpcproc_decode_null(struct rpc_rqst *rqstp, struct xdr_stream *xdr,
+		void *obj)
 {
 	return 0;
 }