[PATCH 5.4 034/108] regulator: hi6421: Fix getting wrong drvdata

Greg Kroah-Hartman
2021-07-26T16:04:23Z

From: Axel Lin <axel.lin@ingics.com>

[ Upstream commit 1c73daee4bf30ccdff5e86dc400daa6f74735da5 ]

Since config.dev = pdev->dev.parent in current code, so
dev_get_drvdata(rdev->dev.parent) call in hi6421_regulator_enable
returns the drvdata of the mfd device rather than the regulator. Fix it.

This was broken while converting to use simplified DT parsing because the
config.dev changed from pdev->dev to pdev->dev.parent for parsing the
parent's of_node.

Fixes: 29dc269a85ef ("regulator: hi6421: Convert to use simplified DT parsing")
Signed-off-by: Axel Lin <axel.lin@ingics.com>
Link: https://lore.kernel.org/r/20210630095959.2411543-1-axel.lin@ingics.com
Signed-off-by: Mark Brown <broonie@kernel.org>
Signed-off-by: Sasha Levin <sashal@kernel.org>
---
drivers/regulator/hi6421-regulator.c | 22 +++++++++++++---------
1 file changed, 13 insertions(+), 9 deletions(-)

diff --git a/drivers/regulator/hi6421-regulator.c b/drivers/regulator/hi6421-regulator.c
index f14cbabfa985..efc91b03a9bb 100644
--- a/drivers/regulator/hi6421-regulator.c
+++ b/drivers/regulator/hi6421-regulator.c
@@ -366,9 +366,8 @@ static struct hi6421_regulator_info

static int hi6421_regulator_enable(struct regulator_dev *rdev)
{
- struct hi6421_regulator_pdata *pdata;
+ struct hi6421_regulator_pdata *pdata = rdev_get_drvdata(rdev);

- pdata = dev_get_drvdata(rdev->dev.parent);
/* hi6421 spec requires regulator enablement must be serialized:
* - Because when BUCK, LDO switching from off to on, it will have
* a huge instantaneous current; so you can not turn on two or
@@ -385,9 +384,10 @@ static int hi6421_regulator_enable(struct regulator_dev *rdev)

static unsigned int hi6421_regulator_ldo_get_mode(struct regulator_dev *rdev)
{
- struct hi6421_regulator_info *info = rdev_get_drvdata(rdev);
+ struct hi6421_regulator_info *info;
unsigned int reg_val;

+ info = container_of(rdev->desc, struct hi6421_regulator_info, desc);
regmap_read(rdev->regmap, rdev->desc->enable_reg, &reg_val);
if (reg_val & info->mode_mask)
return REGULATOR_MODE_IDLE;
@@ -397,9 +397,10 @@ static unsigned int hi6421_regulator_ldo_get_mode(struct regulator_dev *rdev)

static unsigned int hi6421_regulator_buck_get_mode(struct regulator_dev *rdev)
{
- struct hi6421_regulator_info *info = rdev_get_drvdata(rdev);
+ struct hi6421_regulator_info *info;
unsigned int reg_val;

+ info = container_of(rdev->desc, struct hi6421_regulator_info, desc);
regmap_read(rdev->regmap, rdev->desc->enable_reg, &reg_val);
if (reg_val & info->mode_mask)
return REGULATOR_MODE_STANDBY;
@@ -410,9 +411,10 @@ static unsigned int hi6421_regulator_buck_get_mode(struct regulator_dev *rdev)
static int hi6421_regulator_ldo_set_mode(struct regulator_dev *rdev,
unsigned int mode)
{
- struct hi6421_regulator_info *info = rdev_get_drvdata(rdev);
+ struct hi6421_regulator_info *info;
unsigned int new_mode;

+ info = container_of(rdev->desc, struct hi6421_regulator_info, desc);
switch (mode) {
case REGULATOR_MODE_NORMAL:
new_mode = 0;
@@ -434,9 +436,10 @@ static int hi6421_regulator_ldo_set_mode(struct regulator_dev *rdev,
static int hi6421_regulator_buck_set_mode(struct regulator_dev *rdev,
unsigned int mode)
{
- struct hi6421_regulator_info *info = rdev_get_drvdata(rdev);
+ struct hi6421_regulator_info *info;
unsigned int new_mode;

+ info = container_of(rdev->desc, struct hi6421_regulator_info, desc);
switch (mode) {
case REGULATOR_MODE_NORMAL:
new_mode = 0;
@@ -459,7 +462,9 @@ static unsigned int
hi6421_regulator_ldo_get_optimum_mode(struct regulator_dev *rdev,
int input_uV, int output_uV, int load_uA)
{
- struct hi6421_regulator_info *info = rdev_get_drvdata(rdev);
+ struct hi6421_regulator_info *info;
+
+ info = container_of(rdev->desc, struct hi6421_regulator_info, desc);

if (load_uA > info->eco_microamp)
return REGULATOR_MODE_NORMAL;
@@ -543,14 +548,13 @@ static int hi6421_regulator_probe(struct platform_device *pdev)
if (!pdata)
return -ENOMEM;
mutex_init(&pdata->lock);
- platform_set_drvdata(pdev, pdata);

for (i = 0; i < ARRAY_SIZE(hi6421_regulator_info); i++) {
/* assign per-regulator data */
info = &hi6421_regulator_info[i];

config.dev = pdev->dev.parent;
- config.driver_data = info;
+ config.driver_data = pdata;
config.regmap = pmic->regmap;

rdev = devm_regulator_register(&pdev->dev, &info->desc,
--
2.30.2