2 files changed, 17 insertions, 0 deletions

diff --git a/sys/kern/subr_bus.c b/sys/kern/subr_bus.c
index 138b22077d12..7026ae57f578 100644
--- a/sys/kern/subr_bus.c
+++ b/sys/kern/subr_bus.c
@@ -1136,6 +1136,19 @@ resource_list_free(struct resource_list *rl)
 	}
 }
 
+int
+resource_list_add_next(struct resource_list *rl, int type,
+    u_long start, u_long end, u_long count)
+{
+	int	rid;
+
+	rid = 0;
+	while (resource_list_find(rl, type, rid)) rid++;
+	resource_list_add(rl, type, rid, start, end, count);
+
+	return (rid);
+}
+
 void
 resource_list_add(struct resource_list *rl, int type, int rid,
     u_long start, u_long end, u_long count)
diff --git a/sys/sys/bus.h b/sys/sys/bus.h
index f5d5d6f173c0..47bea4cf31ba 100644
--- a/sys/sys/bus.h
+++ b/sys/sys/bus.h
@@ -143,6 +143,10 @@ void	resource_list_free(struct resource_list *rl);
 void	resource_list_add(struct resource_list *rl,
 			  int type, int rid,
 			  u_long start, u_long end, u_long count);
+int	resource_list_add_next(struct resource_list *rl,
+			  int type,
+			  u_long start, u_long end, u_long count);
+
 
 /*
  * Find a resource entry by type and rid.