regulator: core: Fix continuous_voltage_range case in regulator_can_change_voltage

Regulator drivers with continuous_voltage_range flag set allows not setting
n_voltages. Thus if continuous_voltage_range is set, check the constraint range
instead.

Signed-off-by: Axel Lin <axel.lin@ingics.com>
Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com>

diff --git a/drivers/regulator/core.c b/drivers/regulator/core.c
index 0f65b24..d7448ad 100644 (file)
--- a/drivers/regulator/core.c
+++ b/drivers/regulator/core.c
@@ -1885,9 +1885,15 @@ int regulator_can_change_voltage(struct regulator *regulator)
        struct regulator_dev    *rdev = regulator->rdev;
 
        if (rdev->constraints &&
-           rdev->constraints->valid_ops_mask & REGULATOR_CHANGE_VOLTAGE &&
-           (rdev->desc->n_voltages - rdev->desc->linear_min_sel) > 1)
-               return 1;
+           (rdev->constraints->valid_ops_mask & REGULATOR_CHANGE_VOLTAGE)) {
+               if (rdev->desc->n_voltages - rdev->desc->linear_min_sel > 1)
+                       return 1;
+
+               if (rdev->desc->continuous_voltage_range &&
+                   rdev->constraints->min_uV && rdev->constraints->max_uV &&
+                   rdev->constraints->min_uV != rdev->constraints->max_uV)
+                       return 1;
+       }
 
        return 0;
 }