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>

1 files changed, 2 insertions, 1 deletions

diff --git a/drivers/regulator/core.c b/drivers/regulator/core.c
index 744ea1d0b59..efe568deda1 100644
--- 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) &&