of: overlay: rename identifiers in dup_and_fixup_symbol_prop()

More renaming of identifiers to better reflect what they do.

Signed-off-by: Frank Rowand <frank.rowand@sony.com>
Signed-off-by: Rob Herring <robh@kernel.org>

diff --git a/drivers/of/overlay.c b/drivers/of/overlay.c
index 69610637af8802ceb82577edb433785f9ca7c660..bb8867cae05be5a40ec38215271f9e05e556be10 100644 (file)
--- a/drivers/of/overlay.c
+++ b/drivers/of/overlay.c
@@ -90,17 +90,29 @@ static int overlay_notify(struct overlay_changeset *ovcs,
        return 0;
 }
 
+/*
+ * The properties in the "/__symbols__" node are "symbols".
+ *
+ * The value of properties in the "/__symbols__" node is the path of a
+ * node in the subtree of a fragment node's "__overlay__" node, for
+ * example "/fragment@0/__overlay__/symbol_path_tail".  Symbol_path_tail
+ * can be a single node or it may be a multi-node path.
+ *
+ * The duplicated property value will be modified by replacing the
+ * "/fragment_name/__overlay/" portion of the value  with the target
+ * path from the fragment node.
+ */
 static struct property *dup_and_fixup_symbol_prop(
                struct overlay_changeset *ovcs, const struct property *prop)
 {
        struct fragment *fragment;
        struct property *new;
        const char *overlay_name;
-       char *label_path;
+       char *symbol_path_tail;
        char *symbol_path;
        const char *target_path;
        int k;
-       int label_path_len;
+       int symbol_path_tail_len;
        int overlay_name_len;
        int target_path_len;
 
@@ -126,18 +138,18 @@ static struct property *dup_and_fixup_symbol_prop(
        target_path = fragment->target->full_name;
        target_path_len = strlen(target_path);
 
-       label_path = symbol_path + overlay_name_len;
-       label_path_len = strlen(label_path);
+       symbol_path_tail = symbol_path + overlay_name_len;
+       symbol_path_tail_len = strlen(symbol_path_tail);
 
        new->name = kstrdup(prop->name, GFP_KERNEL);
-       new->length = target_path_len + label_path_len + 1;
+       new->length = target_path_len + symbol_path_tail_len + 1;
        new->value = kzalloc(new->length, GFP_KERNEL);
 
        if (!new->name || !new->value)
                goto err_free;
 
        strcpy(new->value, target_path);
-       strcpy(new->value + target_path_len, label_path);
+       strcpy(new->value + target_path_len, symbol_path_tail);
 
        of_property_set_flag(new, OF_DYNAMIC);