stdout-path defines ':' as a path separator and commit 75c28c09af99a
("of: add optional options parameter to of_find_node_by_path()") added
the necessary support to parse paths terminated with ':' path separator.
commit 7914a7c5651a5 ("of: support passing console options with
stdout-path") added options string support to the stdout-path property,
which broke earlycon.
Add the same support to fdt_path_offset() so earlycon can parse and
process stdout-path properties containing an options string.
Cc: Leif Lindholm <leif.lindholm@xxxxxxxxxx>
Cc: <stable@xxxxxxxxxxxxxxx> # 3.19+
Signed-off-by: Peter Hurley <peter@xxxxxxxxxxxxxxxxxx>
---
scripts/dtc/libfdt/fdt_ro.c | 9 +++++----
1 file changed, 5 insertions(+), 4 deletions(-)
diff --git a/scripts/dtc/libfdt/fdt_ro.c b/scripts/dtc/libfdt/fdt_ro.c
index 02b6d68..a96e452 100644
--- a/scripts/dtc/libfdt/fdt_ro.c
+++ b/scripts/dtc/libfdt/fdt_ro.c
@@ -156,7 +156,8 @@ int fdt_subnode_offset(const void *fdt, int parentoffset,
int fdt_path_offset(const void *fdt, const char *path)
{
- const char *end = path + strlen(path);
+ const char *separator = strchr(path, ':');
+ const char *end = separator ? separator : path + strlen(path);
const char *p = path;
int offset = 0;
@@ -166,7 +167,7 @@ int fdt_path_offset(const void *fdt, const char *path)
if (*path != '/') {
const char *q = strchr(path, '/');
- if (!q)
+ if (!q || q > end)
q = end;
p = fdt_get_alias_namelen(fdt, p, q - p);
@@ -177,7 +178,7 @@ int fdt_path_offset(const void *fdt, const char *path)
p = q;
}
- while (*p) {
+ while (p < end) {
const char *q;
while (*p == '/')
@@ -185,7 +186,7 @@ int fdt_path_offset(const void *fdt, const char *path)
if (! *p)
return offset;
q = strchr(p, '/');
- if (! q)
+ if (!q || q > end)
q = end;
offset = fdt_subnode_offset_namelen(fdt, offset, p, q-p);
--
2.3.1
--
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