regulator: tps65217: Fix voltage boundary checking in tps65217_pmic_map_voltage

It is ok to request voltage with min_uV < tps->info[rid]->min_uV and
max_uV > tps->info[rid]->max_uV.

The equation we used in uv_to_vsel() does not allow
min_uV < tps->info[rid]->min_uV, otherwise it returns negative selector.
So we need to set min_uV = tps->info[rid]->min_uV if
min_uV < tps->info[rid]->min_uV.

Signed-off-by: Axel Lin <axel.lin@gmail.com>
Acked-by: AnilKumar Ch <anilkumar@ti.com>
Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com>

diff --git a/drivers/regulator/tps65217-regulator.c b/drivers/regulator/tps65217-regulator.c
index 0a3df5b7c904bff67218191071e247063ca9c0f5..f7d0495b003e5ba8233719fa7f540559d5d2c5c9 100644 (file)
--- a/drivers/regulator/tps65217-regulator.c
+++ b/drivers/regulator/tps65217-regulator.c
@@ -206,10 +206,10 @@ static int tps65217_pmic_map_voltage(struct regulator_dev *dev,
        if (rid < TPS65217_DCDC_1 || rid > TPS65217_LDO_4)
                return -EINVAL;
 
-       if (min_uV < tps->info[rid]->min_uV || min_uV > tps->info[rid]->max_uV)
-               return -EINVAL;
+       if (min_uV < tps->info[rid]->min_uV)
+               min_uV = tps->info[rid]->min_uV;
 
-       if (max_uV < tps->info[rid]->min_uV || max_uV > tps->info[rid]->max_uV)
+       if (max_uV < tps->info[rid]->min_uV || min_uV > tps->info[rid]->max_uV)
                return -EINVAL;
 
        ret = tps->info[rid]->uv_to_vsel(min_uV, &sel);