SUNRPC: Ensure get_rpccred() and put_rpccred() can take NULL arguments

Signed-off-by: Trond Myklebust <trond.myklebust@primarydata.com>
Signed-off-by: Anna Schumaker <Anna.Schumaker@Netapp.com>

1 files changed, 2 insertions, 1 deletions

diff --git a/include/linux/sunrpc/auth.h b/include/linux/sunrpc/auth.h
index 6f36b2bf3e05..899791573a40 100644
--- a/include/linux/sunrpc/auth.h
+++ b/include/linux/sunrpc/auth.h
@@ -202,7 +202,8 @@ char *			rpcauth_stringify_acceptor(struct rpc_cred *);
 static inline
 struct rpc_cred *       get_rpccred(struct rpc_cred *cred)
 {
-        atomic_inc(&cred->cr_count);
+        if (cred != NULL)
+                atomic_inc(&cred->cr_count);
         return cred;
 }