Date: Fri, 01 Sep 2000 14:54:58 -0400 From: James Housley <jim@thehousleys.net> To: Jim King <jim@jimking.net> Cc: Gary Kline <kline@thought.org>, Warner Losh <imp@village.org>, freebsd-stable@FreeBSD.ORG Subject: Re: bad 16550A maybe? Message-ID: <39AFFB82.48810283@thehousleys.net> References: <200009010501.WAA54972@tao.thought.org> <200009011832.MAA37168@harmony.village.org> <002d01c01444$350c8b00$a44b8486@jking>
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Jim King wrote:
>
> I think we'd see a lot fewer of these messages on the mailing lists if sio.c
> set the 16550A trigger level to 8 bytes instead of 14 bytes. That's the
> first thing I do when I see this problem, and that usually fixes it; much
> easier than replacing the misbehaving hardware. :-)
>
Is this the right place to do that?
--- sio.c.orig Wed Aug 16 09:29:34 2000
+++ sio.c Fri Sep 1 14:53:47 2000
@@ -2345,7 +2345,7 @@
* latencies are larger.
*/
com->fifo_image = t->c_ospeed <= 4800
- ? FIFO_ENABLE : FIFO_ENABLE |
FIFO_RX_HIGH;
+ ? FIFO_ENABLE : FIFO_ENABLE |
FIFO_RX_MEDH;
#ifdef COM_ESP
/*
* The Hayes ESP card needs the fifo DMA mode bit set
Jim
--
"Eagles may soar, but weasels don't get sucked into jet engines"
-- Anon
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