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-rw-r--r--sys/dev/isapnp/isapnp.c10
1 files changed, 9 insertions, 1 deletions
diff --git a/sys/dev/isapnp/isapnp.c b/sys/dev/isapnp/isapnp.c
index 8e256dfad7e..17dabbd11b8 100644
--- a/sys/dev/isapnp/isapnp.c
+++ b/sys/dev/isapnp/isapnp.c
@@ -1,4 +1,4 @@
-/* $NetBSD: isapnp.c,v 1.31 1999/01/10 10:23:24 augustss Exp $ */
+/* $NetBSD: isapnp.c,v 1.32 1999/03/22 07:40:57 mycroft Exp $ */
/*-
* Copyright (c) 1996 The NetBSD Foundation, Inc.
@@ -204,6 +204,9 @@ isapnp_free_region(t, r)
bus_space_tag_t t;
struct isapnp_region *r;
{
+ if (r->length == 0)
+ return;
+
#ifdef _KERNEL
bus_space_unmap(t, r->h, r->length);
#endif
@@ -220,6 +223,11 @@ isapnp_alloc_region(t, r)
{
int error = 0;
+ if (r->length == 0) {
+ r->base = 0;
+ return 0;
+ }
+
for (r->base = r->minbase; r->base <= r->maxbase;
r->base += r->align) {
#ifdef _KERNEL