diff options
Diffstat (limited to 'sys/dev/isa/pcppi.c')
| -rw-r--r-- | sys/dev/isa/pcppi.c | 12 |
1 files changed, 11 insertions, 1 deletions
diff --git a/sys/dev/isa/pcppi.c b/sys/dev/isa/pcppi.c index 16e2f2cf0cf..46faf991290 100644 --- a/sys/dev/isa/pcppi.c +++ b/sys/dev/isa/pcppi.c @@ -1,4 +1,4 @@ -/* $OpenBSD: pcppi.c,v 1.13 2016/01/08 15:54:13 jcs Exp $ */ +/* $OpenBSD: pcppi.c,v 1.14 2019/02/20 07:00:31 anton Exp $ */ /* $NetBSD: pcppi.c,v 1.1 1998/04/15 20:26:18 drochner Exp $ */ /* @@ -192,6 +192,16 @@ pcppi_bell(self, pitch, period, slp) struct pcppi_softc *sc = self; int s1, s2; + if (pitch < 0) + pitch = 0; + else if (pitch > INT_MAX - TIMER_FREQ) + pitch = INT_MAX - TIMER_FREQ; + + if (period < 0) + period = 0; + else if (period > INT_MAX / 1000000) + period = INT_MAX / 1000000; + s1 = spltty(); /* ??? */ if (sc->sc_bellactive) { if (sc->sc_timeout) { |