From 9c6a74c5e0ca3bfac09cb1e7bf7629cc0f3aa48c Mon Sep 17 00:00:00 2001 From: Axel Lin Date: Wed, 4 Jul 2012 11:55:07 +0800 Subject: [PATCH] regulator: ad5398: Fix min/max current limit boundary checking It is ok to request current limit with min_uA < chip->min_uA and max_uA > chip->max_uA. We need to set min_uA = chip->min_uA if (min_uA < chip->min_uA), this ensures the equation to calcuate selator does not return negative number. Also set max_uA = chip->max_uA if (max_uA > chip->max_uA), as suggested by Sonic. Signed-off-by: Axel Lin Acked-by: Sonic Zhang Signed-off-by: Mark Brown --- drivers/regulator/ad5398.c | 9 ++++++--- 1 file changed, 6 insertions(+), 3 deletions(-) diff --git a/drivers/regulator/ad5398.c b/drivers/regulator/ad5398.c index 46d05f38baf8..f123f7e3b752 100644 --- a/drivers/regulator/ad5398.c +++ b/drivers/regulator/ad5398.c @@ -89,9 +89,12 @@ static int ad5398_set_current_limit(struct regulator_dev *rdev, int min_uA, int unsigned short data; int ret; - if (min_uA > chip->max_uA || min_uA < chip->min_uA) - return -EINVAL; - if (max_uA > chip->max_uA || max_uA < chip->min_uA) + if (min_uA < chip->min_uA) + min_uA = chip->min_uA; + if (max_uA > chip->max_uA) + max_uA = chip->max_uA; + + if (min_uA > chip->max_uA || max_uA < chip->min_uA) return -EINVAL; selector = DIV_ROUND_UP((min_uA - chip->min_uA) * chip->current_level, -- 2.39.5