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Sleep on a better address to wait for output to drain out of the

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hardware.  Set the sleep-on flag for the address so there is more
than a small chance that the sleep address is actually used (this
used to work by timing out).  Don't bother clearing the sleep-on
flag after a timeout here or elsewhere since leaving it set just
generates a few null calls to wakeup().
This commit is contained in:
bde 1995-07-31 21:10:36 +00:00
parent 6161be8527
commit 17d6fa2126
3 changed files with 9 additions and 6 deletions
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5
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 1.107 1995/07/29 08:33:13 bde Exp $
* $Id: sio.c,v 1.108 1995/07/31 18:29:51 bde Exp $
*/
#include "sio.h"
@ -1688,7 +1688,8 @@ retry:
enable_intr();
while ((inb(com->line_status_port) & (LSR_TSRE | LSR_TXRDY))
!= (LSR_TSRE | LSR_TXRDY)) {
error = ttysleep(tp, TSA_OLOWAT(tp), TTIPRI | PCATCH,
tp->t_state |= TS_SO_OCOMPLETE;
error = ttysleep(tp, TSA_OCOMPLETE(tp), TTIPRI | PCATCH,
"siotx", hz / 100);
if ( txtimeout != 0
&& (!error || error == EAGAIN)

5
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 1.107 1995/07/29 08:33:13 bde Exp $
* $Id: sio.c,v 1.108 1995/07/31 18:29:51 bde Exp $
*/
#include "sio.h"
@ -1688,7 +1688,8 @@ retry:
enable_intr();
while ((inb(com->line_status_port) & (LSR_TSRE | LSR_TXRDY))
!= (LSR_TSRE | LSR_TXRDY)) {
error = ttysleep(tp, TSA_OLOWAT(tp), TTIPRI | PCATCH,
tp->t_state |= TS_SO_OCOMPLETE;
error = ttysleep(tp, TSA_OCOMPLETE(tp), TTIPRI | PCATCH,
"siotx", hz / 100);
if ( txtimeout != 0
&& (!error || error == EAGAIN)

5
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 1.107 1995/07/29 08:33:13 bde Exp $
* $Id: sio.c,v 1.108 1995/07/31 18:29:51 bde Exp $
*/
#include "sio.h"
@ -1688,7 +1688,8 @@ retry:
enable_intr();
while ((inb(com->line_status_port) & (LSR_TSRE | LSR_TXRDY))
!= (LSR_TSRE | LSR_TXRDY)) {
error = ttysleep(tp, TSA_OLOWAT(tp), TTIPRI | PCATCH,
tp->t_state |= TS_SO_OCOMPLETE;
error = ttysleep(tp, TSA_OCOMPLETE(tp), TTIPRI | PCATCH,
"siotx", hz / 100);
if ( txtimeout != 0
&& (!error || error == EAGAIN)