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Calling psignal(9) (via EV_WAKEUP()) in interrupt handlers

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could cause mutex error panic, so defer it via softint(9).
This should fix panic on heavy key strokes during running Xserver.

Should be pulled up to netbsd-5.

XXX: amiga and atari might have the similar problem?
This commit is contained in:
tsutsui 2011-10-23 13:21:54 +00:00
parent ec3546779a
commit a61d3c89b5
1 changed files with 7 additions and 3 deletions
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10
sys/arch/x68k/dev/kbd.c
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@ -1,4 +1,4 @@
/* $NetBSD: kbd.c,v 1.36 2009/01/17 03:26:31 isaki Exp $ */
/* $NetBSD: kbd.c,v 1.37 2011/10/23 13:21:54 tsutsui Exp $ */
/*
* Copyright (c) 1982, 1986, 1990 The Regents of the University of California.
@ -30,7 +30,7 @@
*/
#include <sys/cdefs.h>
__KERNEL_RCSID(0, "$NetBSD: kbd.c,v 1.36 2009/01/17 03:26:31 isaki Exp $");
__KERNEL_RCSID(0, "$NetBSD: kbd.c,v 1.37 2011/10/23 13:21:54 tsutsui Exp $");
#include "ite.h"
#include "bell.h"
@ -350,7 +350,7 @@ kbdintr(void *arg)
fe->value = KEY_UP(c) ? VKEY_UP : VKEY_DOWN;
firm_gettime(fe);
sc->sc_events.ev_put = put;
EV_WAKEUP(&sc->sc_events);
softint_schedule(sc->sc_softintr_cookie);
return 0;
}
@ -358,10 +358,14 @@ kbdintr(void *arg)
void
kbdsoftint(void *arg) /* what if ite is not configured? */
{
struct kbd_softc *sc = arg;
int s;
s = spltty();
if (sc->sc_event_mode)
EV_WAKEUP(&sc->sc_events);
while(kbdgetoff < kbdputoff)
ite_filter(kbdbuf[kbdgetoff++ & KBDBUFMASK]);
kbdgetoff = kbdputoff = 0;