From: Axel Lin Date: Mon, 26 Nov 2012 07:23:38 +0000 (+0800) Subject: regulator: da9052: Ensure setting current limit within specific range X-Git-Tag: v3.8-rc1~129^2~23^2 X-Git-Url: http://review.tizen.org/git/?a=commitdiff_plain;h=1e369bcd032e3fb76e232be9c5642b0833ba62f4;p=platform%2Fkernel%2Flinux-exynos.git 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 Signed-off-by: Mark Brown --- diff --git a/drivers/regulator/da9052-regulator.c b/drivers/regulator/da9052-regulator.c index 27355b1..0a2586a 100644 --- 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 */