diff options
| author | jmcneill <jmcneill@NetBSD.org> | 2006-06-25 14:49:49 +0000 |
|---|---|---|
| committer | jmcneill <jmcneill@NetBSD.org> | 2006-06-25 14:49:49 +0000 |
| commit | 507a433a4ed55b32601281daf2dcd2e874016f60 (patch) | |
| tree | 28013b92f42b4926770ddb950a5ae8c81a820e80 /sys/dev/ic | |
| parent | 186054d0dd6c1c56e869f08c13ae2511987ba9a7 (diff) | |
Make sure that a powerhook was successfully established before trying to
disestablish it on detach.
Diffstat (limited to 'sys/dev/ic')
| -rw-r--r-- | sys/dev/ic/com.c | 7 |
1 files changed, 4 insertions, 3 deletions
diff --git a/sys/dev/ic/com.c b/sys/dev/ic/com.c index 4e03571e1d2..309a448096b 100644 --- a/sys/dev/ic/com.c +++ b/sys/dev/ic/com.c @@ -1,4 +1,4 @@ -/* $NetBSD: com.c,v 1.245 2006/06/25 00:39:21 perry Exp $ */ +/* $NetBSD: com.c,v 1.246 2006/06/25 14:49:49 jmcneill Exp $ */ /*- * Copyright (c) 1998, 1999, 2004 The NetBSD Foundation, Inc. @@ -73,7 +73,7 @@ */ #include <sys/cdefs.h> -__KERNEL_RCSID(0, "$NetBSD: com.c,v 1.245 2006/06/25 00:39:21 perry Exp $"); +__KERNEL_RCSID(0, "$NetBSD: com.c,v 1.246 2006/06/25 14:49:49 jmcneill Exp $"); #include "opt_com.h" #include "opt_ddb.h" @@ -676,7 +676,8 @@ com_detach(struct device *self, int flags) int maj, mn; /* kill the power hook */ - powerhook_disestablish(sc->sc_powerhook); + if (sc->sc_powerhook != NULL) + powerhook_disestablish(sc->sc_powerhook); /* locate the major number */ maj = cdevsw_lookup_major(&com_cdevsw); |
