LU-12799 ptlrpc: return proper error code

from ptlrpc_disconnect_prep_req() using ERR_PTR()
as the callers expect.

Fixes: 5a6ceb664f07 ("LU-7236 ptlrpc: idle connections can disconnect")
Change-Id: I5493194a1f18f3d0b559921b7859bf835585ba58
Signed-off-by: Alex Zhuravlev <bzzz@whamcloud.com>
Reviewed-on: https://review.whamcloud.com/36282
Reviewed-by: Andreas Dilger <adilger@whamcloud.com>
Tested-by: jenkins <devops@whamcloud.com>
Reviewed-by: James Simmons <jsimmons@infradead.org>
Reviewed-by: Shaun Tancheff <stancheff@cray.com>
Tested-by: Maloo <maloo@whamcloud.com>

diff --git a/lustre/ptlrpc/import.c b/lustre/ptlrpc/import.c
index b7ce038..baf05c1 100644 (file)
--- a/lustre/ptlrpc/import.c
+++ b/lustre/ptlrpc/import.c
@@ -1646,7 +1646,7 @@ static struct ptlrpc_request *ptlrpc_disconnect_prep_req(struct obd_import *imp)
        req = ptlrpc_request_alloc_pack(imp, &RQF_MDS_DISCONNECT,
                                        LUSTRE_OBD_VERSION, rq_opc);
        if (req == NULL)
-               RETURN(NULL);
+               RETURN(ERR_PTR(-ENOMEM));
 
        /* We are disconnecting, do not retry a failed DISCONNECT rpc if
         * it fails.  We can get through the above with a down server