-From 6209e42d384cfe873123b411a9bd170de027d4b5 Mon Sep 17 00:00:00 2001
-From: Phil Elwell <phil@raspberrypi.org>
-Date: Fri, 13 Mar 2015 12:43:36 +0000
-Subject: [PATCH] Protect __release_resource against resources without
- parents
-
-Without this patch, removing a device tree overlay can crash here.
-
-Signed-off-by: Phil Elwell <phil@raspberrypi.org>
----
- kernel/resource.c | 6 ++++++
- 1 file changed, 6 insertions(+)
-
---- a/kernel/resource.c
-+++ b/kernel/resource.c
-@@ -213,6 +213,12 @@ static int __release_resource(struct res
- {
- struct resource *tmp, **p, *chd;
-
-+ if (!old->parent) {
-+ WARN(old->sibling, "sibling but no parent");
-+ if (old->sibling)
-+ return -EINVAL;
-+ return 0;
-+ }
- p = &old->parent->child;
- for (;;) {
- tmp = *p;