--- zzzz-none-000/linux-3.10.107/drivers/infiniband/hw/qib/qib_tx.c 2017-06-27 09:49:32.000000000 +0000 +++ scorpion-7490-727/linux-3.10.107/drivers/infiniband/hw/qib/qib_tx.c 2021-02-04 17:41:59.000000000 +0000 @@ -180,6 +180,7 @@ for (i = 0; i < cnt; i++) { int which; + if (!test_bit(i, mask)) continue; /*