30 lines
981 B
Diff
30 lines
981 B
Diff
From: Tobias Wolf <dev-NTEO@vplace.de>
|
|
Date: Wed, 23 Nov 2016 10:40:07 +0100
|
|
Subject: [PATCH] of: Add check to of_scan_flat_dt() before accessing
|
|
initial_boot_params
|
|
|
|
An empty __dtb_start to __dtb_end section might result in initial_boot_params
|
|
being null for arch/mips/ralink. This showed that the boot process hangs
|
|
indefinitely in of_scan_flat_dt().
|
|
|
|
Signed-off-by: Tobias Wolf <dev-NTEO@vplace.de>
|
|
---
|
|
|
|
--- a/drivers/of/fdt.c
|
|
+++ b/drivers/of/fdt.c
|
|
@@ -741,9 +741,12 @@ int __init of_scan_flat_dt(int (*it)(uns
|
|
const char *pathp;
|
|
int offset, rc = 0, depth = -1;
|
|
|
|
- for (offset = fdt_next_node(blob, -1, &depth);
|
|
- offset >= 0 && depth >= 0 && !rc;
|
|
- offset = fdt_next_node(blob, offset, &depth)) {
|
|
+ if (!blob)
|
|
+ return 0;
|
|
+
|
|
+ for (offset = fdt_next_node(blob, -1, &depth);
|
|
+ offset >= 0 && depth >= 0 && !rc;
|
|
+ offset = fdt_next_node(blob, offset, &depth)) {
|
|
|
|
pathp = fdt_get_name(blob, offset, NULL);
|
|
if (*pathp == '/')
|