regulator: prevent registration of matching regulator consumer supplies

Acked-by: Mark Brown <broonie@opensource.wolfsonmicro.com>
Pointer comparison is not sufficient for non-NULL device name matching,
so use strcmp(). Otherwise the semantics remain the same.

Signed-off-by: Jani Nikula <ext-jani.1.nikula@nokia.com>
Signed-off-by: Liam Girdwood <lrg@slimlogic.co.uk>

diff --git a/drivers/regulator/core.c b/drivers/regulator/core.c
index eb112d9..2a3494f 100644 (file)
--- a/drivers/regulator/core.c
+++ b/drivers/regulator/core.c
@@ -944,8 +944,13 @@ static int set_consumer_device_supply(struct regulator_dev *rdev,
                has_dev = 0;
 
        list_for_each_entry(node, &regulator_map_list, list) {
-               if (consumer_dev_name != node->dev_name)
+               if (node->dev_name && consumer_dev_name) {
+                       if (strcmp(node->dev_name, consumer_dev_name) != 0)
+                               continue;
+               } else if (node->dev_name || consumer_dev_name) {
                        continue;
+               }
+
                if (strcmp(node->supply, supply) != 0)
                        continue;