regulator: core: Add checking set_mode callback in regulator_set_optimum_mode
regulator_set_optimum_mode needs set_mode to properly work.
Add checking for set_mode callback in case it may be not implemented.
Signed-off-by: Axel Lin <axel.lin@gmail.com>
Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com>
diff --git a/drivers/regulator/core.c b/drivers/regulator/core.c
index 5c0c975..2f0d557 100644
--- a/drivers/regulator/core.c
+++ b/drivers/regulator/core.c
@@ -2335,6 +2335,9 @@
*/
ret = -EINVAL;
+ if (!rdev->desc->ops->set_mode)
+ goto out;
+
/* get output voltage */
output_uV = _regulator_get_voltage(rdev);
if (output_uV <= 0) {