clk: simplify clk_fetch_parent_index() function

The clk_core_get_parent_by_index can be used as a helper function
to simplify the implementation of clk_fetch_parent_index().

Signed-off-by: Masahiro Yamada <yamada.masahiro@socionext.com>
Reviewed-by: Vladimir Zapolskiy <vz@mleia.com>
Signed-off-by: Stephen Boyd <sboyd@codeaurora.org>

diff --git a/drivers/clk/clk.c b/drivers/clk/clk.c
index da7c9a523f02efd4d5dd26c5771ff178eab7969d..82b79a6ec0ec2beef64b16d9b8f3e7af1d09af3a 100644 (file)
--- a/drivers/clk/clk.c
+++ b/drivers/clk/clk.c
@@ -1069,23 +1069,9 @@ static int clk_fetch_parent_index(struct clk_core *core,
        if (!parent)
                return -EINVAL;
 
-       /*
-        * find index of new parent clock using cached parent ptrs,
-        * or if not yet cached, use string name comparison and cache
-        * them now to avoid future calls to clk_core_lookup.
-        */
-       for (i = 0; i < core->num_parents; i++) {
-               if (core->parents[i] == parent)
-                       return i;
-
-               if (core->parents[i])
-                       continue;
-
-               if (!strcmp(core->parent_names[i], parent->name)) {
-                       core->parents[i] = clk_core_lookup(parent->name);
+       for (i = 0; i < core->num_parents; i++)
+               if (clk_core_get_parent_by_index(core, i) == parent)
                        return i;
-               }
-       }
 
        return -EINVAL;
 }