If the path doesn't start with '/' check to see if it matches some alias
under "/aliases" and substitute the matching alias value in the path
and retry the lookup.
Signed-off-by: Kumar Gala <[EMAIL PROTECTED]>
---
libfdt/fdt_ro.c | 25 +++++++++++++++++++++++--
1 files changed, 23 insertions(+), 2 deletions(-)
diff --git a/libfdt/fdt_ro.c b/libfdt/fdt_ro.c
index ebd1260..74b8153 100644
--- a/libfdt/fdt_ro.c
+++ b/libfdt/fdt_ro.c
@@ -139,8 +139,29 @@ int fdt_path_offset(const void *fdt, const char *path)
FDT_CHECK_HEADER(fdt);
- if (*path != '/')
- return -FDT_ERR_BADPATH;
+ /* see if we have an alias */
+ if (*path != '/') {
+ const char *q;
+ int aliasoffset = fdt_path_offset(fdt, "/aliases");
+
+ if (aliasoffset < 0)
+ return -FDT_ERR_BADPATH;
+
+ q = strchr(path, '/');
+ if (!q)
+ q = end;
+
+ p = fdt_getprop_namelen(fdt, aliasoffset, path, q - p, NULL);
+ if (!p)
+ return -FDT_ERR_BADPATH;
+
+ aliasoffset = fdt_path_offset(fdt, p);
+ if (*q == '\0')
+ return aliasoffset;
+
+ q++;
+ return fdt_subnode_offset(fdt, aliasoffset, q);
+ }
while (*p) {
const char *q;
--
1.5.5.1
_______________________________________________
Linuxppc-dev mailing list
Linuxppc-dev@ozlabs.org
https://ozlabs.org/mailman/listinfo/linuxppc-dev
