regulator: Fix the s5m8767a problem of the division by null
authorSangbeom Kim <sbkim73@samsung.com>
Wed, 13 Jun 2012 08:27:16 +0000 (17:27 +0900)
committerMark Brown <broonie@opensource.wolfsonmicro.com>
Sun, 17 Jun 2012 17:27:20 +0000 (18:27 +0100)
If ramp_delay is 0, delay value can be divided by zero.
This patch can fix the problem.

Signed-off-by: Sangbeom Kim <sbkim73@samsung.com>
Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com>
drivers/regulator/s5m8767.c

index 290d6fc..9caadb4 100644 (file)
@@ -451,7 +451,7 @@ static int s5m8767_set_voltage_time_sel(struct regulator_dev *rdev,
 
        desc = reg_voltage_map[reg_id];
 
-       if (old_sel < new_sel)
+       if ((old_sel < new_sel) && s5m8767->ramp_delay)
                return DIV_ROUND_UP(desc->step * (new_sel - old_sel),
                                        s5m8767->ramp_delay * 1000);
        return 0;