p71924506
/
linux_old1
1
0
Fork 0
Code Issues Pull Requests Projects Releases Wiki Activity

regulator: core: don't return error with inadequate reason 

drms_uA_update() always returns failure when it cannot find regulator's
input voltage.  But if hardware supports load configuration with
ops->set_load() and the input regulator isn't specified with valid reason
such as the input regulator is battery, not finding input voltage is
normal so such case should not return with an error.

Avoid such inadequate error return by checking input/output voltages
only when drms_uA_update() is about to configure load with enum based
ops->set_mode().

Cc: Liam Girdwood <lgirdwood@gmail.com>
Cc: Mark Brown <broonie@kernel.org>
Cc: Bjorn Andersson <bjorn.andersson@linaro.org>
Cc: linux-kernel@vger.kernel.org
Signed-off-by: Joonwoo Park <joonwoop@codeaurora.org>
Signed-off-by: Mark Brown <broonie@kernel.org>
This commit is contained in:
Joonwoo Park 2016-09-19 14:46:54 -07:00 committed by Mark Brown
parent 29b4817d40
commit 577766175c
1 changed files with 18 additions and 18 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

24
drivers/regulator/core.c
View File

@ -679,6 +679,18 @@ static int drms_uA_update(struct regulator_dev *rdev)
!rdev->desc->ops->set_load)
return -EINVAL;
/* calc total requested load */
list_for_each_entry(sibling, &rdev->consumer_list, list)
current_uA += sibling->uA_load;
current_uA += rdev->constraints->system_load;
if (rdev->desc->ops->set_load) {
/* set the optimum mode for our new total regulator load */
err = rdev->desc->ops->set_load(rdev, current_uA);
if (err < 0)
rdev_err(rdev, "failed to set load %d\n", current_uA);
} else {
/* get output voltage */
output_uV = _regulator_get_voltage(rdev);
if (output_uV <= 0) {
@ -697,18 +709,6 @@ static int drms_uA_update(struct regulator_dev *rdev)
return -EINVAL;
}
/* calc total requested load */
list_for_each_entry(sibling, &rdev->consumer_list, list)
current_uA += sibling->uA_load;
current_uA += rdev->constraints->system_load;
if (rdev->desc->ops->set_load) {
/* set the optimum mode for our new total regulator load */
err = rdev->desc->ops->set_load(rdev, current_uA);
if (err < 0)
rdev_err(rdev, "failed to set load %d\n", current_uA);
} else {
/* now get the optimum mode for our new total regulator load */
mode = rdev->desc->ops->get_optimum_mode(rdev, input_uV,
output_uV, current_uA);