The voltage selection logic for the twl6030 smps fails if min:max is such that min < 1300mV and max > 1300mV although this is in valid range for a regulator e.g. [x, 1350] where x < 1300. Fixing the voltage selection logic such that first it will check for min_uV for a range and then calculated value will be checked against max_uV.
Signed-off-by: Laxman Dewangan <[email protected]> --- drivers/regulator/twl-regulator.c | 14 +++++++++++--- 1 files changed, 11 insertions(+), 3 deletions(-) diff --git a/drivers/regulator/twl-regulator.c b/drivers/regulator/twl-regulator.c index 181a2cf..e5d2223 100644 --- a/drivers/regulator/twl-regulator.c +++ b/drivers/regulator/twl-regulator.c @@ -755,12 +755,16 @@ twl6030smps_set_voltage(struct regulator_dev *rdev, int min_uV, int max_uV, case 0: if (min_uV == 0) vsel = 0; - else if ((min_uV >= 600000) && (max_uV <= 1300000)) { + else if ((min_uV >= 600000) && (min_uV <= 1300000)) { + int calc_uV; vsel = (min_uV - 600000) / 125; if (vsel % 100) vsel += 100; vsel /= 100; vsel++; + calc_uV = twl6030smps_list_voltage(rdev, vsel); + if (calc_uV > max_uV) + return -EINVAL; } /* Values 1..57 for vsel are linear and can be calculated * values 58..62 are non linear. @@ -781,12 +785,16 @@ twl6030smps_set_voltage(struct regulator_dev *rdev, int min_uV, int max_uV, case SMPS_OFFSET_EN: if (min_uV == 0) vsel = 0; - else if ((min_uV >= 700000) && (max_uV <= 1420000)) { + else if ((min_uV >= 700000) && (min_uV <= 1420000)) { + int calc_uV; vsel = (min_uV - 700000) / 125; if (vsel % 100) vsel += 100; vsel /= 100; vsel++; + calc_uV = twl6030smps_list_voltage(rdev, vsel); + if (calc_uV > max_uV) + return -EINVAL; } /* Values 1..57 for vsel are linear and can be calculated * values 58..62 are non linear. @@ -819,7 +827,7 @@ twl6030smps_set_voltage(struct regulator_dev *rdev, int min_uV, int max_uV, if (min_uV == 0) vsel = 0; else if ((min_uV >= 2161000) && (max_uV <= 4321000)) { - vsel = (min_uV - 1852000) / 386; + vsel = (min_uV - 2161000) / 386; if (vsel % 100) vsel += 100; vsel /= 100; -- 1.7.1.1 -- To unsubscribe from this list: send the line "unsubscribe linux-tegra" in the body of a message to [email protected] More majordomo info at http://vger.kernel.org/majordomo-info.html
