korg/linux
0
0
Fork 0
mirror of https://mirrors.bfsu.edu.cn/git/linux.git synced 2024-11-16 08:44:21 +08:00
Code Issues Packages Projects Releases Wiki Activity

of: Add check to of_scan_flat_dt() before accessing initial_boot_params

Browse Source 
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>
Cc: Sergei Shtylyov <sergei.shtylyov@cogentembedded.com>
Cc: linux-mips@linux-mips.org
Patchwork: https://patchwork.linux-mips.org/patch/14605/
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
This commit is contained in:
Tobias Wolf 2016-11-23 10:40:07 +01:00 committed by Ralf Baechle
parent 02564fc89d
commit 3ec754410c
1 changed files with 6 additions and 3 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

9
drivers/of/fdt.c
View File

@ -738,9 +738,12 @@ int __init of_scan_flat_dt(int (*it)(unsigned long node,
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 == '/')