diff options
| author | Chris Kuethe <ckuethe@cvs.openbsd.org> | 2010-06-28 04:36:32 +0000 |
|---|---|---|
| committer | Chris Kuethe <ckuethe@cvs.openbsd.org> | 2010-06-28 04:36:32 +0000 |
| commit | 99ff7238b96bed07df689105a0d55c62a10ae1e8 (patch) | |
| tree | 81c2b3c9b63f60be16ab5373e2f85f2605d625d7 /sys/dev | |
| parent | b27faa82e26347c17aff72975081e2d9d2b40f46 (diff) | |
Use a more moderate fifo trigger level (4) for moderately quick
(sub-38400) port speeds. Inspired by netbsd. ok fgsch krw deraadt miod
Diffstat (limited to 'sys/dev')
| -rw-r--r-- | sys/dev/ic/com.c | 4 |
1 files changed, 3 insertions, 1 deletions
diff --git a/sys/dev/ic/com.c b/sys/dev/ic/com.c index 1f5f6f3156a..83bce029147 100644 --- a/sys/dev/ic/com.c +++ b/sys/dev/ic/com.c @@ -1,4 +1,4 @@ -/* $OpenBSD: com.c,v 1.139 2010/06/26 23:24:44 guenther Exp $ */ +/* $OpenBSD: com.c,v 1.140 2010/06/28 04:36:31 ckuethe Exp $ */ /* $NetBSD: com.c,v 1.82.4.1 1996/06/02 09:08:00 mrg Exp $ */ /* @@ -356,6 +356,8 @@ comopen(dev_t dev, int flag, int mode, struct proc *p) if (tp->t_ispeed <= 1200) fifo |= FIFO_TRIGGER_1; + else if (tp->t_ispeed <= 38400) + fifo |= FIFO_TRIGGER_4; else fifo |= FIFO_TRIGGER_8; if (sc->sc_uarttype == COM_UART_TI16750) { |