[ofa-general] opensm/libvendor/osm_vendor_ibumad_sa.c: In __osmv_sa_mad_rcv_cb, handle attribute offset of 0

[Hal Rosenstock]

opensm/libvendor/osm_vendor_ibumad_sa.c: In __osmv_sa_mad_rcv_cb, handle
attribute offset of 0 which is valid at IBA 1.2.1 when 0 attributes are
returned

Signed-off-by: Hal Rosenstock <hal at xsigo.com>

diff --git a/opensm/libvendor/osm_vendor_ibumad_sa.c b/opensm/libvendor/osm_vendor_ibumad_sa.c
index b06cc69..5ce8fad 100644
--- a/opensm/libvendor/osm_vendor_ibumad_sa.c
+++ b/opensm/libvendor/osm_vendor_ibumad_sa.c
@@ -137,20 +137,23 @@ __osmv_sa_mad_rcv_cb(IN osm_madw_t * p_madw,
 			else
 				query_res.result_cnt = 1;
 #else
-			/* we used the offset value to calculate the number of
-			   records in here */
-			query_res.result_cnt = (uintn_t)
-			    ((p_madw->mad_size - IB_SA_MAD_HDR_SIZE) /
-			     ib_get_attr_size(p_sa_mad->attr_offset));
-			osm_log(p_bind->p_log, OSM_LOG_DEBUG,
-				"__osmv_sa_mad_rcv_cb: Count = %u = %zu / %u (%zu)\n",
-				query_res.result_cnt,
-				p_madw->mad_size - IB_SA_MAD_HDR_SIZE,
-				ib_get_attr_size(p_sa_mad->attr_offset),
-				(p_madw->mad_size -
-				 IB_SA_MAD_HDR_SIZE) %
-				ib_get_attr_size(p_sa_mad->attr_offset)
-			    );
+			if (ib_get_attr_size(p_sa_mad->attr_offset)) {
+				/* we used the offset value to calculate the
+				   number of records in here */
+				query_res.result_cnt = (uintn_t)
+				    ((p_madw->mad_size - IB_SA_MAD_HDR_SIZE) /
+				     ib_get_attr_size(p_sa_mad->attr_offset));
+				osm_log(p_bind->p_log, OSM_LOG_DEBUG,
+					"__osmv_sa_mad_rcv_cb: Count = %u = %zu / %u (%zu)\n",
+					query_res.result_cnt,
+					p_madw->mad_size - IB_SA_MAD_HDR_SIZE,
+					ib_get_attr_size(p_sa_mad->attr_offset),
+					(p_madw->mad_size -
+					 IB_SA_MAD_HDR_SIZE) %
+					ib_get_attr_size(p_sa_mad->attr_offset)
+			    	);
+			} else
+				query_res.result_cnt = 0;
 #endif
 		}
 	}