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Change got_status/modem_status assignment per Bruce suggestion,

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because inb clears modem status port.
This commit is contained in:
ache 1994-04-01 16:47:01 +00:00
parent d18a728a4f
commit 22f7e88925
3 changed files with 12 additions and 12 deletions
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8
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 1.39 1994/03/25 15:10:50 ache Exp $
* $Id: sio.c,v 1.40 1994/03/26 13:40:18 ache Exp $
*/
#include "sio.h"
@ -715,12 +715,12 @@ sioopen(dev, flag, mode, p)
disable_intr();
(void) inb(com->line_status_port);
(void) inb(com->data_port);
com->prev_modem_status = inb(com->modem_status_port);
if (!got_status)
com->last_modem_status =
com->prev_modem_status = inb(com->modem_status_port);
outb(iobase + com_ier, IER_ERXRDY | IER_ETXRDY | IER_ERLS
| IER_EMSC);
enable_intr();
if (!got_status)
com->last_modem_status = com->prev_modem_status;
if (com->prev_modem_status & MSR_DCD || FAKE_DCD(unit))
tp->t_state |= TS_CARR_ON;
} else if (tp->t_state & TS_XCLUDE && p->p_ucred->cr_uid != 0) {

8
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 1.39 1994/03/25 15:10:50 ache Exp $
* $Id: sio.c,v 1.40 1994/03/26 13:40:18 ache Exp $
*/
#include "sio.h"
@ -715,12 +715,12 @@ sioopen(dev, flag, mode, p)
disable_intr();
(void) inb(com->line_status_port);
(void) inb(com->data_port);
com->prev_modem_status = inb(com->modem_status_port);
if (!got_status)
com->last_modem_status =
com->prev_modem_status = inb(com->modem_status_port);
outb(iobase + com_ier, IER_ERXRDY | IER_ETXRDY | IER_ERLS
| IER_EMSC);
enable_intr();
if (!got_status)
com->last_modem_status = com->prev_modem_status;
if (com->prev_modem_status & MSR_DCD || FAKE_DCD(unit))
tp->t_state |= TS_CARR_ON;
} else if (tp->t_state & TS_XCLUDE && p->p_ucred->cr_uid != 0) {

8
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 1.39 1994/03/25 15:10:50 ache Exp $
* $Id: sio.c,v 1.40 1994/03/26 13:40:18 ache Exp $
*/
#include "sio.h"
@ -715,12 +715,12 @@ sioopen(dev, flag, mode, p)
disable_intr();
(void) inb(com->line_status_port);
(void) inb(com->data_port);
com->prev_modem_status = inb(com->modem_status_port);
if (!got_status)
com->last_modem_status =
com->prev_modem_status = inb(com->modem_status_port);
outb(iobase + com_ier, IER_ERXRDY | IER_ETXRDY | IER_ERLS
| IER_EMSC);
enable_intr();
if (!got_status)
com->last_modem_status = com->prev_modem_status;
if (com->prev_modem_status & MSR_DCD || FAKE_DCD(unit))
tp->t_state |= TS_CARR_ON;
} else if (tp->t_state & TS_XCLUDE && p->p_ucred->cr_uid != 0) {