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Disable fifos in sioclose(). Closes PR 576.

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This commit is contained in:
bde 1995-08-13 07:49:35 +00:00
parent 1054797635
commit 1f4bacf262
3 changed files with 27 additions and 3 deletions
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10
sys/dev/sio/sio.c
View File

@ -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 */

10
sys/i386/isa/sio.c
View File

@ -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 */

10
sys/isa/sio.c
View File

@ -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 */