diff options
| author | Jim Rees <rees@cvs.openbsd.org> | 1997-12-11 00:58:45 +0000 |
|---|---|---|
| committer | Jim Rees <rees@cvs.openbsd.org> | 1997-12-11 00:58:45 +0000 |
| commit | 174f202127eb10e71c2fbefec46bec05d2bdc5f9 (patch) | |
| tree | fcca75569f981f79874388f716118550d3d48316 /sys/arch | |
| parent | a2cdc2102a8443c969adae11ffa0899c3dfa6a5a (diff) | |
don't panic in apmopen if apm not configured
Diffstat (limited to 'sys/arch')
| -rw-r--r-- | sys/arch/i386/i386/apm.c | 26 |
1 files changed, 17 insertions, 9 deletions
diff --git a/sys/arch/i386/i386/apm.c b/sys/arch/i386/i386/apm.c index 6ff432b594d..1ede47c8c48 100644 --- a/sys/arch/i386/i386/apm.c +++ b/sys/arch/i386/i386/apm.c @@ -1,4 +1,4 @@ -/* $OpenBSD: apm.c,v 1.16 1997/12/03 00:19:32 rees Exp $ */ +/* $OpenBSD: apm.c,v 1.17 1997/12/11 00:58:44 rees Exp $ */ /*- * Copyright (c) 1995 John T. Kohl. All rights reserved. @@ -751,12 +751,14 @@ apmopen(dev, flag, mode, p) int flag, mode; struct proc *p; { - struct apm_softc *sc = apm_cd.cd_devs[APMUNIT(dev)]; + struct apm_softc *sc; /* apm0 only */ - if (APMUNIT(dev) != 0 || sc == NULL) + if (!apm_cd.cd_ndevs || APMUNIT(dev) != 0 || sc == NULL) return ENXIO; + sc = apm_cd.cd_devs[APMUNIT(dev)]; + switch (APMDEV(dev)) { case APMDEV_CTL: if (!(flag & FWRITE)) @@ -783,12 +785,14 @@ apmclose(dev, flag, mode, p) int flag, mode; struct proc *p; { - struct apm_softc *sc = apm_cd.cd_devs[APMUNIT(dev)]; + struct apm_softc *sc; /* apm0 only */ - if (APMUNIT(dev) != 0 || sc == NULL) + if (!apm_cd.cd_ndevs || APMUNIT(dev) != 0 || sc == NULL) return ENXIO; + sc = apm_cd.cd_devs[APMUNIT(dev)]; + DPRINTF(("apmclose: pid %d flag %x mode %x\n", p->p_pid, flag, mode)); switch (APMDEV(dev)) { @@ -814,7 +818,7 @@ apmioctl(dev, cmd, data, flag, p) int flag; struct proc *p; { - struct apm_softc *sc = apm_cd.cd_devs[APMUNIT(dev)]; + struct apm_softc *sc; struct apm_power_info *powerp; struct apm_event_info *evp; struct apmregs regs; @@ -822,9 +826,11 @@ apmioctl(dev, cmd, data, flag, p) struct apm_ctl *actl; /* apm0 only */ - if (APMUNIT(dev) != 0 || sc == NULL) + if (!apm_cd.cd_ndevs || APMUNIT(dev) != 0 || sc == NULL) return ENXIO; + sc = apm_cd.cd_devs[APMUNIT(dev)]; + switch (cmd) { /* some ioctl names from linux */ case APM_IOC_STANDBY: @@ -906,12 +912,14 @@ apmselect(dev, rw, p) int rw; struct proc *p; { - struct apm_softc *sc = apm_cd.cd_devs[APMUNIT(dev)]; + struct apm_softc *sc; /* apm0 only */ - if (APMUNIT(dev) != 0 || sc == NULL) + if (!apm_cd.cd_ndevs || APMUNIT(dev) != 0 || sc == NULL) return ENXIO; + sc = apm_cd.cd_devs[APMUNIT(dev)]; + switch (rw) { case FREAD: if (sc->event_count) |