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Message-ID: <1359292616.11083.7.camel@phoenix>
Date: Sun, 27 Jan 2013 21:16:56 +0800
From: Axel Lin <axel.lin@...ics.com>
To: Mark Brown <broonie@...nsource.wolfsonmicro.com>
Cc: Haojian Zhuang <haojian.zhuang@...il.com>,
David Dajun Chen <dchen@...semi.com>,
Gyungoh Yoo <jack.yoo@...im-ic.com>,
MyungJoo Ham <myungjoo.ham@...sung.com>,
Graeme Gregory <gg@...mlogic.co.uk>,
Laxman Dewangan <ldewangan@...dia.com>,
Shawn Guo <shawn.guo@...aro.org>,
Liam Girdwood <lgirdwood@...il.com>,
linux-kernel@...r.kernel.org
Subject: [RFT][PATCH v2] regulator: Add missing of_node_put()
of_find_node_by_name() returns a node pointer with refcount incremented, use
of_node_put() on it when done.
of_find_node_by_name() will call of_node_put() against from parameter,
thus we also need to call of_node_get(from) before calling
of_find_node_by_name().
Signed-off-by: Axel Lin <axel.lin@...ics.com>
Cc: Haojian Zhuang <haojian.zhuang@...il.com>
Cc: David Dajun Chen <dchen@...semi.com>
Cc: Gyungoh Yoo <jack.yoo@...im-ic.com>
Cc: MyungJoo Ham <myungjoo.ham@...sung.com>
Cc: Graeme Gregory <gg@...mlogic.co.uk>
Cc: Laxman Dewangan <ldewangan@...dia.com>
Cc: Shawn Guo <shawn.guo@...aro.org>
---
v2:
need to call of_node_get() for the node to start searching from before calling
of_find_node_by_name().
drivers/regulator/88pm8607.c | 3 ++-
drivers/regulator/da9052-regulator.c | 5 +++--
drivers/regulator/max8907-regulator.c | 7 ++++---
drivers/regulator/max8925-regulator.c | 3 ++-
drivers/regulator/max8997.c | 4 +++-
drivers/regulator/mc13xxx-regulator-core.c | 7 ++++++-
drivers/regulator/palmas-regulator.c | 2 ++
drivers/regulator/tps65910-regulator.c | 6 ++++--
8 files changed, 26 insertions(+), 11 deletions(-)
diff --git a/drivers/regulator/88pm8607.c b/drivers/regulator/88pm8607.c
index a957e8c..c79ab84 100644
--- a/drivers/regulator/88pm8607.c
+++ b/drivers/regulator/88pm8607.c
@@ -347,7 +347,7 @@ static int pm8607_regulator_dt_init(struct platform_device *pdev,
struct regulator_config *config)
{
struct device_node *nproot, *np;
- nproot = pdev->dev.parent->of_node;
+ nproot = of_node_get(pdev->dev.parent->of_node);
if (!nproot)
return -ENODEV;
nproot = of_find_node_by_name(nproot, "regulators");
@@ -363,6 +363,7 @@ static int pm8607_regulator_dt_init(struct platform_device *pdev,
break;
}
}
+ of_node_put(nproot);
return 0;
}
#else
diff --git a/drivers/regulator/da9052-regulator.c b/drivers/regulator/da9052-regulator.c
index c6d8651..96b569a 100644
--- a/drivers/regulator/da9052-regulator.c
+++ b/drivers/regulator/da9052-regulator.c
@@ -366,9 +366,9 @@ static int da9052_regulator_probe(struct platform_device *pdev)
config.init_data = pdata->regulators[pdev->id];
} else {
#ifdef CONFIG_OF
- struct device_node *nproot = da9052->dev->of_node;
- struct device_node *np;
+ struct device_node *nproot, *np;
+ nproot = of_node_get(da9052->dev->of_node);
if (!nproot)
return -ENODEV;
@@ -385,6 +385,7 @@ static int da9052_regulator_probe(struct platform_device *pdev)
break;
}
}
+ of_node_put(nproot);
#endif
}
diff --git a/drivers/regulator/max8907-regulator.c b/drivers/regulator/max8907-regulator.c
index d40cf7f..4568c15 100644
--- a/drivers/regulator/max8907-regulator.c
+++ b/drivers/regulator/max8907-regulator.c
@@ -224,11 +224,11 @@ static struct of_regulator_match max8907_matches[] = {
static int max8907_regulator_parse_dt(struct platform_device *pdev)
{
- struct device_node *np = pdev->dev.parent->of_node;
- struct device_node *regulators;
+ struct device_node *np, *regulators;
int ret;
- if (!pdev->dev.parent->of_node)
+ np = of_node_get(pdev->dev.parent->of_node);
+ if (!np)
return 0;
regulators = of_find_node_by_name(np, "regulators");
@@ -239,6 +239,7 @@ static int max8907_regulator_parse_dt(struct platform_device *pdev)
ret = of_regulator_match(&pdev->dev, regulators, max8907_matches,
ARRAY_SIZE(max8907_matches));
+ of_node_put(regulators);
if (ret < 0) {
dev_err(&pdev->dev, "Error parsing regulator init data: %d\n",
ret);
diff --git a/drivers/regulator/max8925-regulator.c b/drivers/regulator/max8925-regulator.c
index 446a854..0d5f64a 100644
--- a/drivers/regulator/max8925-regulator.c
+++ b/drivers/regulator/max8925-regulator.c
@@ -252,7 +252,7 @@ static int max8925_regulator_dt_init(struct platform_device *pdev,
{
struct device_node *nproot, *np;
int rcount;
- nproot = pdev->dev.parent->of_node;
+ nproot = of_node_get(pdev->dev.parent->of_node);
if (!nproot)
return -ENODEV;
np = of_find_node_by_name(nproot, "regulators");
@@ -263,6 +263,7 @@ static int max8925_regulator_dt_init(struct platform_device *pdev,
rcount = of_regulator_match(&pdev->dev, np,
&max8925_regulator_matches[ridx], 1);
+ of_node_put(np);
if (rcount < 0)
return -ENODEV;
config->init_data = max8925_regulator_matches[ridx].init_data;
diff --git a/drivers/regulator/max8997.c b/drivers/regulator/max8997.c
index 5556a15..91f38d8 100644
--- a/drivers/regulator/max8997.c
+++ b/drivers/regulator/max8997.c
@@ -917,7 +917,7 @@ static int max8997_pmic_dt_parse_pdata(struct platform_device *pdev,
struct max8997_regulator_data *rdata;
unsigned int i, dvs_voltage_nr = 1, ret;
- pmic_np = iodev->dev->of_node;
+ pmic_np = of_node_get(iodev->dev->of_node);
if (!pmic_np) {
dev_err(&pdev->dev, "could not find pmic sub-node\n");
return -ENODEV;
@@ -937,6 +937,7 @@ static int max8997_pmic_dt_parse_pdata(struct platform_device *pdev,
rdata = devm_kzalloc(&pdev->dev, sizeof(*rdata) *
pdata->num_regulators, GFP_KERNEL);
if (!rdata) {
+ of_node_put(regulators_np);
dev_err(&pdev->dev, "could not allocate memory for regulator data\n");
return -ENOMEM;
}
@@ -959,6 +960,7 @@ static int max8997_pmic_dt_parse_pdata(struct platform_device *pdev,
rdata->reg_node = reg_np;
rdata++;
}
+ of_node_put(regulators_np);
if (of_get_property(pmic_np, "max8997,pmic-buck1-uses-gpio-dvs", NULL))
pdata->buck1_gpiodvs = true;
diff --git a/drivers/regulator/mc13xxx-regulator-core.c b/drivers/regulator/mc13xxx-regulator-core.c
index 2ecf1d8..5d2ab2e 100644
--- a/drivers/regulator/mc13xxx-regulator-core.c
+++ b/drivers/regulator/mc13xxx-regulator-core.c
@@ -175,6 +175,7 @@ int mc13xxx_get_num_regulators_dt(struct platform_device *pdev)
for_each_child_of_node(parent, child)
num++;
+ of_node_put(parent);
return num;
}
EXPORT_SYMBOL_GPL(mc13xxx_get_num_regulators_dt);
@@ -197,8 +198,11 @@ struct mc13xxx_regulator_init_data *mc13xxx_parse_regulators_dt(
data = devm_kzalloc(&pdev->dev, sizeof(*data) * priv->num_regulators,
GFP_KERNEL);
- if (!data)
+ if (!data) {
+ of_node_put(parent);
return NULL;
+ }
+
p = data;
for_each_child_of_node(parent, child) {
@@ -217,6 +221,7 @@ struct mc13xxx_regulator_init_data *mc13xxx_parse_regulators_dt(
}
}
}
+ of_node_put(parent);
*num_parsed = parsed;
return data;
diff --git a/drivers/regulator/palmas-regulator.c b/drivers/regulator/palmas-regulator.c
index c9e912f..cbaf226 100644
--- a/drivers/regulator/palmas-regulator.c
+++ b/drivers/regulator/palmas-regulator.c
@@ -527,6 +527,7 @@ static void palmas_dt_to_pdata(struct device *dev,
u32 prop;
int idx, ret;
+ node = of_node_get(node);
regulators = of_find_node_by_name(node, "regulators");
if (!regulators) {
dev_info(dev, "regulator node not found\n");
@@ -535,6 +536,7 @@ static void palmas_dt_to_pdata(struct device *dev,
ret = of_regulator_match(dev, regulators, palmas_matches,
PALMAS_NUM_REGS);
+ of_node_put(regulators);
if (ret < 0) {
dev_err(dev, "Error parsing regulator init data: %d\n", ret);
return;
diff --git a/drivers/regulator/tps65910-regulator.c b/drivers/regulator/tps65910-regulator.c
index b0e4c0b..6ba6931 100644
--- a/drivers/regulator/tps65910-regulator.c
+++ b/drivers/regulator/tps65910-regulator.c
@@ -964,8 +964,7 @@ static struct tps65910_board *tps65910_parse_dt_reg_data(
{
struct tps65910_board *pmic_plat_data;
struct tps65910 *tps65910 = dev_get_drvdata(pdev->dev.parent);
- struct device_node *np = pdev->dev.parent->of_node;
- struct device_node *regulators;
+ struct device_node *np, *regulators;
struct of_regulator_match *matches;
unsigned int prop;
int idx = 0, ret, count;
@@ -978,6 +977,7 @@ static struct tps65910_board *tps65910_parse_dt_reg_data(
return NULL;
}
+ np = of_node_get(pdev->dev.parent->of_node);
regulators = of_find_node_by_name(np, "regulators");
if (!regulators) {
dev_err(&pdev->dev, "regulator node not found\n");
@@ -994,11 +994,13 @@ static struct tps65910_board *tps65910_parse_dt_reg_data(
matches = tps65911_matches;
break;
default:
+ of_node_put(regulators);
dev_err(&pdev->dev, "Invalid tps chip version\n");
return NULL;
}
ret = of_regulator_match(&pdev->dev, regulators, matches, count);
+ of_node_put(regulators);
if (ret < 0) {
dev_err(&pdev->dev, "Error parsing regulator init data: %d\n",
ret);
--
1.7.9.5
--
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