Add debug messages on voltage setting and enabling path in order
to debug the coupled regulators problem.
Signed-off-by: Maciej Purski <m.purski@xxxxxxxxxxx>
---
drivers/regulator/core.c | 9 +++++++++
1 file changed, 9 insertions(+)
diff --git a/drivers/regulator/core.c b/drivers/regulator/core.c
index 6ed568b..b740426 100644
--- a/drivers/regulator/core.c
+++ b/drivers/regulator/core.c
@@ -1571,6 +1571,7 @@ static int regulator_resolve_supply(struct regulator_dev *rdev)
struct device *dev = rdev->dev.parent;
int ret;
+ pr_err("%s: %d\n", __func__, __LINE__);
/* No supply to resovle? */
if (!rdev->supply_name)
return 0;
@@ -2211,6 +2212,7 @@ static int _regulator_enable(struct regulator_dev *rdev)
{
int ret;
+ pr_err("%s: %d\n", __func__, __LINE__);
lockdep_assert_held_once(&rdev->mutex);
/* check voltage and requested load before enabling */
@@ -2259,6 +2261,7 @@ int regulator_enable(struct regulator *regulator)
struct regulator_dev *rdev = regulator->rdev;
int ret = 0;
+ pr_err("%s: %d\n", __func__, __LINE__);
if (regulator->always_on)
return 0;
@@ -2275,6 +2278,7 @@ int regulator_enable(struct regulator *regulator)
if (ret != 0 && rdev->supply)
regulator_disable(rdev->supply);
+ pr_err("%s: %d\n", __func__, __LINE__);
return ret;
}
EXPORT_SYMBOL_GPL(regulator_enable);
@@ -2373,6 +2377,7 @@ int regulator_disable(struct regulator *regulator)
struct regulator_dev *rdev = regulator->rdev;
int ret = 0;
+ pr_err("%s: %d\n", __func__, __LINE__);
if (regulator->always_on)
return 0;
@@ -2383,6 +2388,7 @@ int regulator_disable(struct regulator *regulator)
if (ret == 0 && rdev->supply)
regulator_disable(rdev->supply);
+ pr_err("%s: %d\n", __func__, __LINE__);
return ret;
}
EXPORT_SYMBOL_GPL(regulator_disable);
@@ -2858,6 +2864,7 @@ static int _regulator_do_set_voltage(struct regulator_dev *rdev,
const struct regulator_ops *ops = rdev->desc->ops;
int old_uV = _regulator_get_voltage(rdev);
+ pr_err("%s: %d\n", __func__, __LINE__);
trace_regulator_set_voltage(rdev_get_name(rdev), min_uV, max_uV);
min_uV += rdev->constraints->uV_offset;
@@ -2992,6 +2999,7 @@ static int regulator_set_voltage_unlocked(struct regulator *regulator,
int best_supply_uV = 0;
int supply_change_uV = 0;
+ pr_err("%s: %d\n", __func__, __LINE__);
/* If we're setting the same range as last time the change
* should be a noop (some cpufreq implementations use the same
* voltage for multiple frequencies, for example).
@@ -3124,6 +3132,7 @@ int regulator_set_voltage(struct regulator *regulator, int min_uV, int max_uV)
{
int ret = 0;
+ pr_err("%s: %d\n", __func__, __LINE__);
regulator_lock_supply(regulator->rdev);
ret = regulator_set_voltage_unlocked(regulator, min_uV, max_uV,
--
2.7.4
--
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