From a4b4148379ef1ad460fc1aa6bcf2cde99cd91166 Mon Sep 17 00:00:00 2001 From: Mark Brown Date: Sat, 14 May 2011 11:19:45 -0700 Subject: [PATCH] regulator: If we can't configure optimum mode we're always in the best one If either a regulator driver can't tell us what the optimum mode is (or doesn't have modes in the first place) or the system doesn't allow DRMS changes then it's more helpful for users to just say that we're in the optimal mode, even if it's from a selection of one. Still report errors if the process of picking and setting a mode changes as this may indicate that we're stuck in a low power mode and unable to deliver a higher current that the consumer just asked for. Signed-off-by: Mark Brown Signed-off-by: Liam Girdwood --- drivers/regulator/core.c | 16 +++++++++++++--- 1 file changed, 13 insertions(+), 3 deletions(-) diff --git a/drivers/regulator/core.c b/drivers/regulator/core.c index 58452ac0f165..7287000595e5 100644 --- a/drivers/regulator/core.c +++ b/drivers/regulator/core.c @@ -2097,16 +2097,26 @@ int regulator_set_optimum_mode(struct regulator *regulator, int uA_load) mutex_lock(&rdev->mutex); + /* + * first check to see if we can set modes at all, otherwise just + * tell the consumer everything is OK. + */ regulator->uA_load = uA_load; ret = regulator_check_drms(rdev); - if (ret < 0) + if (ret < 0) { + ret = 0; goto out; - ret = -EINVAL; + } - /* sanity check */ if (!rdev->desc->ops->get_optimum_mode) goto out; + /* + * we can actually do this so any errors are indicators of + * potential real failure. + */ + ret = -EINVAL; + /* get output voltage */ output_uV = _regulator_get_voltage(rdev); if (output_uV <= 0) { -- 2.20.1