diff options
| -rw-r--r-- | sys/dev/sio/sio.c | 7 |
1 files changed, 6 insertions, 1 deletions
diff --git a/sys/dev/sio/sio.c b/sys/dev/sio/sio.c index 59bcdad..2ba205b 100644 --- a/sys/dev/sio/sio.c +++ b/sys/dev/sio/sio.c @@ -2161,9 +2161,14 @@ comparam(tp, t) * latencies are reasonable for humans. Serial comms * protocols shouldn't expect anything better since modem * latencies are larger. + * + * The fifo trigger level cannot be set at RX_HIGH for high + * speed connections without further work on reducing + * interrupt disablement times in other parts of the system, + * without producing silo overflow errors. */ com->fifo_image = t->c_ospeed <= 4800 - ? FIFO_ENABLE : FIFO_ENABLE | FIFO_RX_HIGH; + ? FIFO_ENABLE : FIFO_ENABLE | FIFO_RX_MEDHI; #ifdef COM_ESP /* * The Hayes ESP card needs the fifo DMA mode bit set |
