regulator: da9052: Ensure setting current limit within specific range

Checking da9052_current_limits[row][i] <= max_uA is not enough, it is possible
da9052_current_limits[row][i] may less than the requested min_uA.

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

diff --git a/drivers/regulator/da9052-regulator.c b/drivers/regulator/da9052-regulator.c
index 27355b1..0a2586a 100644 (file)
--- a/drivers/regulator/da9052-regulator.c
+++ b/drivers/regulator/da9052-regulator.c
@@ -129,17 +129,17 @@ static int da9052_dcdc_set_current_limit(struct regulator_dev *rdev, int min_uA,
        else if (offset == 0)
                row = 1;
 
-       if (min_uA > da9052_current_limits[row][DA9052_MAX_UA] ||
-           max_uA < da9052_current_limits[row][DA9052_MIN_UA])
-               return -EINVAL;
-
        for (i = DA9052_CURRENT_RANGE - 1; i >= 0; i--) {
-               if (da9052_current_limits[row][i] <= max_uA) {
+               if ((min_uA <= da9052_current_limits[row][i]) &&
+                   (da9052_current_limits[row][i] <= max_uA)) {
                        reg_val = i;
                        break;
                }
        }
 
+       if (i < 0)
+               return -EINVAL;
+
        /* Determine the even or odd position of the buck current limit
         * register field
        */