regulator: core: Log when we bring constraints into range

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 <broonie@kernel.org>

diff --git a/drivers/regulator/core.c b/drivers/regulator/core.c
index 881c37e61f7547120b0a07e07b4dce3ce459181d..18dd7ee61455d5487a84e1512d656fbe6c98ed72 100644 (file)
--- 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) {