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Force HUPCL in bidirectional port open.

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This don't allow it hangs forever.
This commit is contained in:
Andrey A. Chernov 1993-12-11 00:36:14 +00:00
parent 875d6b8f31
commit 04201cd182
Notes: svn2git 2020-12-20 02:59:44 +00:00 
svn path=/head/; revision=841
3 changed files with 12 additions and 6 deletions
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6
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 1.16 1993/11/25 01:31:48 wollman Exp $
* $Id: sio.c,v 1.17 1993/12/09 17:24:19 ache Exp $
*/
#include "sio.h"
@ -668,11 +668,13 @@ sioopen(dev, flag, mode, p)
tp->t_ispeed = tp->t_ospeed = comdefaultrate;
}
#ifdef COM_BIDIR
if (com->bidir)
if (com->bidir) {
if (callout)
tp->t_cflag |= CLOCAL;
else
tp->t_cflag &= ~CLOCAL;
tp->t_cflag |= HUPCL;
}
#endif
(void) commctl(com, MCR_DTR | MCR_RTS, DMSET);
error = comparam(tp, &tp->t_termios);

6
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 1.16 1993/11/25 01:31:48 wollman Exp $
* $Id: sio.c,v 1.17 1993/12/09 17:24:19 ache Exp $
*/
#include "sio.h"
@ -668,11 +668,13 @@ sioopen(dev, flag, mode, p)
tp->t_ispeed = tp->t_ospeed = comdefaultrate;
}
#ifdef COM_BIDIR
if (com->bidir)
if (com->bidir) {
if (callout)
tp->t_cflag |= CLOCAL;
else
tp->t_cflag &= ~CLOCAL;
tp->t_cflag |= HUPCL;
}
#endif
(void) commctl(com, MCR_DTR | MCR_RTS, DMSET);
error = comparam(tp, &tp->t_termios);

6
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 1.16 1993/11/25 01:31:48 wollman Exp $
* $Id: sio.c,v 1.17 1993/12/09 17:24:19 ache Exp $
*/
#include "sio.h"
@ -668,11 +668,13 @@ sioopen(dev, flag, mode, p)
tp->t_ispeed = tp->t_ospeed = comdefaultrate;
}
#ifdef COM_BIDIR
if (com->bidir)
if (com->bidir) {
if (callout)
tp->t_cflag |= CLOCAL;
else
tp->t_cflag &= ~CLOCAL;
tp->t_cflag |= HUPCL;
}
#endif
(void) commctl(com, MCR_DTR | MCR_RTS, DMSET);
error = comparam(tp, &tp->t_termios);