Date: Tue, 22 Sep 1998 14:26:14 -0400 (EDT) From: tbuswell@mediaone.net To: FreeBSD-gnats-submit@FreeBSD.ORG Subject: misc/8027: PS/2 intellimouse and "psmintr: out of sync" messages Message-ID: <199809221826.OAA00789@tbuswell.ne.mediaone.net>
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>Number: 8027
>Category: misc
>Synopsis: PS/2 intellimouse and "psmintr: out of sync" messages
>Confidential: no
>Severity: non-critical
>Priority: low
>Responsible: freebsd-bugs
>State: open
>Quarter:
>Keywords:
>Date-Required:
>Class: sw-bug
>Submitter-Id: current-users
>Arrival-Date: Tue Sep 22 11:30:01 PDT 1998
>Last-Modified:
>Originator: Ted Buswell
>Organization:
>Release: FreeBSD 3.0-BETA i386
>Environment:
PS/2 "MS Intellimouse" and i386/isa/psm.c 1.54
>Description:
No recovery is attempted when the psm driver detects
that it is "out of sync" with the device. Once this condition is
reached, all subsequent activity with the mouse will generate a
message such as:
/kernel: psmintr: out of sync (00c8 != 0008).
A reboot is required to regain error-free use of the mouse.
>How-To-Repeat:
1) disconnect the mouse from the host
2) reconnect the mouse
3) move the mouse to generate "out of sync" messages.
>Fix:
In my opinion, when the "out of sync" condition is detected,
an effort should be made to resync, possibly through
reinitialization of the device.
The attached diff fixes the problem, at least for my
"Intellimouse"-type device, by reinitializing the device.
[is the spltty() needed?]
Index: psm.c
===================================================================
RCS file: /home/ncvs/src/sys/i386/isa/psm.c,v
retrieving revision 1.54
diff -c -r1.54 psm.c
*** psm.c 1998/07/06 16:10:06 1.54
--- psm.c 1998/09/22 18:12:15
***************
*** 1696,1703 ****
*/
if ((sc->inputbytes == 0)
&& ((c & sc->mode.syncmask[0]) != sc->mode.syncmask[1])) {
log(LOG_DEBUG, "psmintr: out of sync (%04x != %04x).\n",
! c & sc->mode.syncmask[0], sc->mode.syncmask[1]);
continue;
}
--- 1696,1711 ----
*/
if ((sc->inputbytes == 0)
&& ((c & sc->mode.syncmask[0]) != sc->mode.syncmask[1])) {
+ int s;
log(LOG_DEBUG, "psmintr: out of sync (%04x != %04x).\n",
! c & sc->mode.syncmask[0], sc->mode.syncmask[1]);
! s = spltty();
! if( kbdc_lock(sc->kbdc, TRUE) ) {
! if (!reinitialize(unit, &sc->mode) || !enable_aux_dev(sc->kbdc))
! recover_from_error(sc->kbdc);
! kbdc_lock(sc->kbdc, FALSE);
! }
! splx(s);
continue;
}
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