From: Kumar Gala <[EMAIL PROTECTED]>
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]>
Acked-by: David Gibson <[EMAIL PROTECTED]>
Acked-by: Gerald Van Baren <[EMAIL PROTECTED]>
---
libfdt/fdt_ro.c | 21 +++++++++++++++++++--
1 files changed, 19 insertions(+), 2 deletions(-)
diff --git a/libfdt/fdt_ro.c b/libfdt/fdt_ro.c
index d566eba..b09a6e9 100644
--- a/libfdt/fdt_ro.c
+++ b/libfdt/fdt_ro.c
@@ -143,8 +143,25 @@ 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;
+ offset = fdt_path_offset(fdt, p);
+
+ p = q;
+ }
while (*p) {
const char *q;
--
1.5.6.3
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