staging/lustre/osc: get rid of old checksum initial value

Old code residue assumes initial checksum value as ~0, and relies on
that to check whether OST server has calculated bulk data checksum.
That is not the case anymore.
Signed-off-by: Bobi Jam <bobijam.xu@intel.com>
Reviewed-on: http://review.whamcloud.com/10354
Intel-bug-id: https://jira.hpdd.intel.com/browse/LU-4937Reviewed-by: Andreas Dilger <andreas.dilger@intel.com>
Reviewed-by: Bob Glossman <bob.glossman@intel.com>
Signed-off-by: Oleg Drokin <oleg.drokin@intel.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

drivers/staging/lustre/lustre/osc/osc_request.c

@@ -1570,12 +1570,7 @@ static int osc_brw_fini_request(struct ptlrpc_request *req, int rc)
 			router = libcfs_nid2str(req->rq_bulk->bd_sender);
 		}
 
-		if (server_cksum == ~0 && rc > 0) {
-			CERROR("Protocol error: server %s set the 'checksum' "
-			       "bit, but didn't send a checksum.  Not fatal, "
-			       "but please notify on http://bugs.whamcloud.com/\n",
-			       libcfs_nid2str(peer->nid));
-		} else if (server_cksum != client_cksum) {
+		if (server_cksum != client_cksum) {
 			LCONSOLE_ERROR_MSG(0x133, "%s: BAD READ CHECKSUM: from "
 					   "%s%s%s inode "DFID" object "DOSTID
 					   " extent ["LPU64"-"LPU64"]\n",