[PATCH 1/3] SUNRPC: Don't use EPROTONOSUPPORT in svc_register()

[Chuck Lever <chuck.lever@oracle.com>]

The RPC client returns EPROTONOSUPPORT if there is a protocol version
mismatch (ie the server doesn't support the RPC protocol version sent
by the client).

Since svc_register uses the RPC client, it's confusing when
svc_register's helpers return this errno for a problem not related to
a program number mismatch.

Signed-off-by: Chuck Lever <chuck.lever@oracle.com>
---

 net/sunrpc/svc.c |    4 ++--
 1 files changed, 2 insertions(+), 2 deletions(-)

diff --git a/net/sunrpc/svc.c b/net/sunrpc/svc.c
index c51fed4..a278a82 100644
--- a/net/sunrpc/svc.c
+++ b/net/sunrpc/svc.c
@@ -750,7 +750,7 @@ static int __svc_rpcb_register4(const u32 program, const u32 version,
 		netid = RPCBIND_NETID_TCP;
 		break;
 	default:
-		return -EPROTONOSUPPORT;
+		return -ENOPROTOOPT;
 	}
 
 	return rpcb_v4_register(program, version,
@@ -786,7 +786,7 @@ static int __svc_rpcb_register6(const u32 program, const u32 version,
 		netid = RPCBIND_NETID_TCP6;
 		break;
 	default:
-		return -EPROTONOSUPPORT;
+		return -ENOPROTOOPT;
 	}
 
 	return rpcb_v4_register(program, version,