regulator: check for init_data on registration

Since it is now mandatory to supply constraints via init_data on device
registration check for that when registering, saving us from oopsing
later on.

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 84202ea..65e07b9 100644 (file)
--- a/drivers/regulator/core.c
+++ b/drivers/regulator/core.c
@@ -1691,6 +1691,9 @@ struct regulator_dev *regulator_register(struct regulator_desc *regulator_desc,
            !regulator_desc->type == REGULATOR_CURRENT)
                return ERR_PTR(-EINVAL);
 
+       if (!init_data)
+               return ERR_PTR(-EINVAL);
+
        rdev = kzalloc(sizeof(struct regulator_dev), GFP_KERNEL);
        if (rdev == NULL)
                return ERR_PTR(-ENOMEM);