opp: Reinitialize the list_kref before adding the static OPPs again

[linux-2.6-microblaze.git] / drivers / opp / of.c

diff --git a/drivers/opp/of.c b/drivers/opp/of.c
index 6dc41fa..1cbb582 100644 (file)
--- a/drivers/opp/of.c
+++ b/drivers/opp/of.c
@@ -663,6 +663,13 @@ static int _of_add_opp_table_v2(struct device *dev, struct opp_table *opp_table)
                return 0;
        }
 
+       /*
+        * Re-initialize list_kref every time we add static OPPs to the OPP
+        * table as the reference count may be 0 after the last tie static OPPs
+        * were removed.
+        */
+       kref_init(&opp_table->list_kref);
+
        /* We have opp-table node now, iterate over it and add OPPs */
        for_each_available_child_of_node(opp_table->np, np) {
                opp = _opp_add_static_v2(opp_table, dev, np);