regulator: Handle missing constraints in _regulator_disable()

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 744ea1d..efe568d 100644 (file)
--- a/drivers/regulator/core.c
+++ b/drivers/regulator/core.c
@@ -1283,7 +1283,8 @@ static int _regulator_disable(struct regulator_dev *rdev)
                return -EIO;
 
        /* are we the last user and permitted to disable ? */
-       if (rdev->use_count == 1 && !rdev->constraints->always_on) {
+       if (rdev->use_count == 1 &&
+           (rdev->constraints && !rdev->constraints->always_on)) {
 
                /* we are last user */
                if (_regulator_can_change_status(rdev) &&