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check that interlock isn't null before releasing it

This commit is contained in:
pooka 2009-06-09 23:26:19 +00:00
parent 8bd8f20d7b
commit ed545b8d69
1 changed files with 4 additions and 3 deletions
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7
sys/rump/librump/rumpkern/ltsleep.c
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@ -1,4 +1,4 @@
/* $NetBSD: ltsleep.c,v 1.13 2009/06/09 15:53:05 pooka Exp $ */
/* $NetBSD: ltsleep.c,v 1.14 2009/06/09 23:26:19 pooka Exp $ */
/*
* Copyright (c) 2007 Antti Kantee. All Rights Reserved.
@ -29,7 +29,7 @@
*/
#include <sys/cdefs.h>
__KERNEL_RCSID(0, "$NetBSD: ltsleep.c,v 1.13 2009/06/09 15:53:05 pooka Exp $");
__KERNEL_RCSID(0, "$NetBSD: ltsleep.c,v 1.14 2009/06/09 23:26:19 pooka Exp $");
#include <sys/param.h>
#include <sys/proc.h>
@ -61,7 +61,8 @@ ltsleep(wchan_t ident, pri_t prio, const char *wmesg, int timo,
cv_init(&lts.cv, NULL);
mutex_enter(&sleepermtx);
simple_unlock(slock);
if (slock)
simple_unlock(slock);
LIST_INSERT_HEAD(&sleepers, &lts, entries);
/* protected by sleepermtx */