arm: socfpga: scan: Factor out IO chain programming

[karo-tx-uboot.git] / lib / libfdt / fdt_ro.c

diff --git a/lib/libfdt/fdt_ro.c b/lib/libfdt/fdt_ro.c
index 03733e574f71db1df2ebec2c08ec66dff95908d0..7b0777b67eb3cbb92609ae81366ef4bf66d1944b 100644 (file)
--- a/lib/libfdt/fdt_ro.c
+++ b/lib/libfdt/fdt_ro.c
@@ -113,6 +113,25 @@ int fdt_subnode_offset(const void *fdt, int parentoffset,
        return fdt_subnode_offset_namelen(fdt, parentoffset, name, strlen(name));
 }
 
+/*
+ * Find the next of path seperator, note we need to search for both '/' and ':'
+ * and then take the first one so that we do the rigth thing for e.g.
+ * "foo/bar:option" and "bar:option/otheroption", both of which happen, so
+ * first searching for either ':' or '/' does not work.
+ */
+static const char *fdt_path_next_seperator(const char *path)
+{
+       const char *sep1 = strchr(path, '/');
+       const char *sep2 = strchr(path, ':');
+
+       if (sep1 && sep2)
+               return (sep1 < sep2) ? sep1 : sep2;
+       else if (sep1)
+               return sep1;
+       else
+               return sep2;
+}
+
 int fdt_path_offset(const void *fdt, const char *path)
 {
        const char *end = path + strlen(path);
@@ -123,7 +142,7 @@ int fdt_path_offset(const void *fdt, const char *path)
 
        /* see if we have an alias */
        if (*path != '/') {
-               const char *q = strchr(path, '/');
+               const char *q = fdt_path_next_seperator(path);
 
                if (!q)
                        q = end;
@@ -141,9 +160,9 @@ int fdt_path_offset(const void *fdt, const char *path)
 
                while (*p == '/')
                        p++;
-               if (! *p)
+               if (*p == '\0' || *p == ':')
                        return offset;
-               q = strchr(p, '/');
+               q = fdt_path_next_seperator(p);
                if (! q)
                        q = end;
 
@@ -498,7 +517,7 @@ int fdt_count_strings(const void *fdt, int node, const char *property)
 
        list = fdt_getprop(fdt, node, property, &length);
        if (!list)
-               return -length;
+               return length;
 
        for (i = 0; i < length; i++) {
                int len = strlen(list);
@@ -558,7 +577,7 @@ int fdt_get_string_index(const void *fdt, int node, const char *property,
                index--;
        }
 
-       return FDT_ERR_NOTFOUND;
+       return -FDT_ERR_NOTFOUND;
 }
 
 int fdt_get_string(const void *fdt, int node, const char *property,