Move the device_delete_all_children() function from usb_util.c

to kern/subr_bus.c. Simplify this function so that it no longer
depends on malloc() to execute. Identify a few other places where
it makes sense to use device_delete_all_children().

MFC after:	1 week

1 files changed, 2 insertions, 8 deletions

diff --git a/sys/dev/ppbus/ppbconf.c b/sys/dev/ppbus/ppbconf.c
index 9e21c67..858e5b2 100644
--- a/sys/dev/ppbus/ppbconf.c
+++ b/sys/dev/ppbus/ppbconf.c
@@ -422,20 +422,14 @@ ppbus_attach(device_t dev)
 static int
 ppbus_detach(device_t dev)
 {
-	device_t *children;
-	int error, nchildren, i;
+	int error;
 
 	error = bus_generic_detach(dev);
 	if (error)
 		return (error);
 
 	/* detach & delete all children */
-	if (!device_get_children(dev, &children, &nchildren)) {
-		for (i = 0; i < nchildren; i++)
-			if (children[i])
-				device_delete_child(dev, children[i]);
-		free(children, M_TEMP);
-	}
+	device_delete_all_children(dev);
 
 	return (0);
 }