The setup_arch() would invoke unflatten_device_tree() even no
valid fdt found. So we'd better check it first and return early.
Signed-off-by: Changbin Du <changbin.du@xxxxxxxxx>
---
drivers/of/fdt.c | 5 +++++
1 file changed, 5 insertions(+)
diff --git a/drivers/of/fdt.c b/drivers/of/fdt.c
index dcc1dd96911a..05d439d63bc5 100644
--- a/drivers/of/fdt.c
+++ b/drivers/of/fdt.c
@@ -1225,6 +1225,11 @@ bool __init early_init_dt_scan(void *params)
*/
void __init unflatten_device_tree(void)
{
+ if (!initial_boot_params) {
+ pr_warn("No valid device tree found, continuing without\n");
+ return;
+ }
+
__unflatten_device_tree(initial_boot_params, NULL, &of_root,
early_init_dt_alloc_memory_arch, false);
--
2.30.2
