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| author | bde <bde@FreeBSD.org> | 1995-08-13 07:49:35 +0000 |
|---|---|---|
| committer | bde <bde@FreeBSD.org> | 1995-08-13 07:49:35 +0000 |
| commit | 567c62b04012a4709806b0736d96eccb401d5c4a (patch) | |
| tree | dd0264779f4466946ae011eed97f0b452233f94c /sys/dev/sio | |
| parent | 3bb5707e9de5562fab73ac9d84e7e40654aacec1 (diff) | |
| download | FreeBSD-src-567c62b04012a4709806b0736d96eccb401d5c4a.zip FreeBSD-src-567c62b04012a4709806b0736d96eccb401d5c4a.tar.gz | |
Disable fifos in sioclose(). Closes PR 576.
Diffstat (limited to 'sys/dev/sio')
| -rw-r--r-- | sys/dev/sio/sio.c | 10 |
1 files changed, 9 insertions, 1 deletions
diff --git a/sys/dev/sio/sio.c b/sys/dev/sio/sio.c index 098ca51..205fa5b 100644 --- a/sys/dev/sio/sio.c +++ b/sys/dev/sio/sio.c @@ -31,7 +31,7 @@ * SUCH DAMAGE. * * from: @(#)com.c 7.5 (Berkeley) 5/16/91 - * $Id: sio.c,v 1.108 1995/07/31 18:29:51 bde Exp $ + * $Id: sio.c,v 1.109 1995/07/31 21:10:36 bde Exp $ */ #include "sio.h" @@ -986,6 +986,14 @@ comhardclose(com) } } } + if (com->hasfifo) { + /* + * Disable fifos so that they are off after controlled + * reboots. Some BIOSes fail to detect 16550s when the + * fifos are enabled. + */ + outb(iobase + com_fifo, 0); + } com->active_out = FALSE; wakeup(&com->active_out); wakeup(TSA_CARR_ON(tp)); /* restart any wopeners */ |
