[PATCH] regulator: core: Log when we bring constraints into range

[Mark Brown]

This aids in debugging problems triggered by the regulator core applying
its constraints, we could potentially crash immediately after updating
the voltage if the constraints are buggy.

Signed-off-by: Mark Brown <broo...@kernel.org>
---
 drivers/regulator/core.c | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/drivers/regulator/core.c b/drivers/regulator/core.c
index 881c37e61f75..18dd7ee61455 100644
--- a/drivers/regulator/core.c
+++ b/drivers/regulator/core.c
@@ -935,6 +935,8 @@ static int machine_constraints_voltage(struct regulator_dev 
*rdev,
                }
 
                if (target_min != current_uV || target_max != current_uV) {
+                       rdev_info(rdev, "Bringing %duV into %d-%duV\n",
+                                 current_uV, target_min, target_max);
                        ret = _regulator_do_set_voltage(
                                rdev, target_min, target_max);
                        if (ret < 0) {
-- 
2.8.0.rc3