regulator: If we fail when setting up a supply say which supply

Makes it a bit easier to identify if it's a problem with the supplies,
the usual error would be omitting the supply name entirely.

Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com>
Signed-off-by: Liam Girdwood <lrg@slimlogic.co.uk>

diff --git a/drivers/regulator/core.c b/drivers/regulator/core.c
index 9fa2095..a2dc622 100644 (file)
--- a/drivers/regulator/core.c
+++ b/drivers/regulator/core.c
@@ -2565,8 +2565,11 @@ struct regulator_dev *regulator_register(struct regulator_desc *regulator_desc,
                        init_data->consumer_supplies[i].dev,
                        init_data->consumer_supplies[i].dev_name,
                        init_data->consumer_supplies[i].supply);
-               if (ret < 0)
+               if (ret < 0) {
+                       dev_err(dev, "Failed to set supply %s\n",
+                               init_data->consumer_supplies[i].supply);
                        goto unset_supplies;
+               }
        }
 
        list_add(&rdev->list, &regulator_list);