[U-Boot] [PATCH] NFS: Add error message when U-Boot NFS version (V2) is not supported by NFS server

[Guillaume GARDET]

Signed-off-by: Guillaume GARDET <guillaume.gardet at free.fr>
Cc: joe.hershberger at ni.com

---
 net/nfs.c | 16 +++++++++++++++-
 1 file changed, 15 insertions(+), 1 deletion(-)

diff --git a/net/nfs.c b/net/nfs.c
index 78968d8..0ed47c9 100644
--- a/net/nfs.c
+++ b/net/nfs.c
@@ -481,8 +481,22 @@ static int nfs_lookup_reply(uchar *pkt, unsigned len)
 	if (rpc_pkt.u.reply.rstatus  ||
 	    rpc_pkt.u.reply.verifier ||
 	    rpc_pkt.u.reply.astatus  ||
-	    rpc_pkt.u.reply.data[0])
+	    rpc_pkt.u.reply.data[0]){
+		switch(ntohl(rpc_pkt.u.reply.astatus)){
+		case 0: /* Not an error */
+			break;
+		case 2: /* Remote can't support NFS version */
+			printf("*** ERROR: NFS version not supported: Requested: V%d, accepted: min V%d - max V%d\n", 
+				2, 
+				ntohl(rpc_pkt.u.reply.data[0]), 
+				ntohl(rpc_pkt.u.reply.data[1]));
+			break;
+		default: /* Unknown error on 'accept state' flag */
+			printf("*** ERROR: accept state error (%d)\n", ntohl(rpc_pkt.u.reply.astatus));
+			break;
+		}
 		return -1;
+	}
 
 	memcpy(filefh, rpc_pkt.u.reply.data + 1, NFS_FHSIZE);
 
-- 
1.8.4.5