regulator: gpio-regulator: Catch 'no states property' misuse
A selection of voltage or current values (AKA states) should always
be specified when using a GPIO regulator. If there are no switchable
states then the fixed regulators should be used instead.
Signed-off-by: Lee Jones <lee.jones@linaro.org>
Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com>
diff --git a/drivers/regulator/gpio-regulator.c b/drivers/regulator/gpio-regulator.c
index faa2f71..dc92605 100644
--- a/drivers/regulator/gpio-regulator.c
+++ b/drivers/regulator/gpio-regulator.c
@@ -183,6 +183,11 @@
/* Fetch states. */
prop = of_find_property(np, "states", NULL);
+ if (!prop) {
+ dev_err(dev, "No 'states' property found\n");
+ return ERR_PTR(-EINVAL);
+ }
+
proplen = prop->length / sizeof(int);
config->states = devm_kzalloc(dev,