diff --git a/drivers/regulator/core.c b/drivers/regulator/core.c index 47ccd35c7965..e46e53aa43db 100644 --- a/drivers/regulator/core.c +++ b/drivers/regulator/core.c @@ -233,6 +233,21 @@ void regulator_unlock(struct regulator_dev *rdev) mutex_unlock(®ulator_nesting_mutex); } +static bool regulator_supply_is_couple(struct regulator_dev *rdev) +{ + struct regulator_dev *c_rdev; + int i; + + for (i = 1; i < rdev->coupling_desc.n_coupled; i++) { + c_rdev = rdev->coupling_desc.coupled_rdevs[i]; + + if (rdev->supply->rdev == c_rdev) + return true; + } + + return false; +} + static void regulator_unlock_recursive(struct regulator_dev *rdev, unsigned int n_coupled) { @@ -245,7 +260,7 @@ static void regulator_unlock_recursive(struct regulator_dev *rdev, if (!c_rdev) continue; - if (c_rdev->supply) + if (c_rdev->supply && !regulator_supply_is_couple(c_rdev)) regulator_unlock_recursive( c_rdev->supply->rdev, c_rdev->coupling_desc.n_coupled); @@ -283,7 +298,7 @@ static int regulator_lock_recursive(struct regulator_dev *rdev, *old_contended_rdev = NULL; } - if (c_rdev->supply) { + if (c_rdev->supply && !regulator_supply_is_couple(c_rdev)) { err = regulator_lock_recursive(c_rdev->supply->rdev, new_contended_rdev, old_contended_rdev,