Fix Bad of_node_put() splat, and some minor checkpatch issues.
Changes since v1:
-Use of_get_child_by_name() instead of of_find_node_by_name().
Niklas Cassel (4):
regulator: qcom_spmi: Fix warning Bad of_node_put()
regulator: qcom_spmi: Use correct regmap when checking for error
regulator: qcom_spmi: Do not initialise static to NULL
regulator: qcom_spmi: Indent with tabs instead of spaces
drivers/regulator/qcom_spmi-regulator.c | 38 +++++++++++++++----------
1 file changed, 23 insertions(+), 15 deletions(-)
--
2.17.1
Since we have just assigned saw_regmap, and since the error message
refers to saw_regmap, it feels safe to assume that it is saw_regmap,
and not regmap, that should be checked for errors.
Fixes: 0caecaa87202 ("regulator: qcom_spmi: Add support for SAW")
Signed-off-by: Niklas Cassel <[email protected]>
---
drivers/regulator/qcom_spmi-regulator.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/drivers/regulator/qcom_spmi-regulator.c b/drivers/regulator/qcom_spmi-regulator.c
index 4cc14c65d86b..ba3d5e63ada6 100644
--- a/drivers/regulator/qcom_spmi-regulator.c
+++ b/drivers/regulator/qcom_spmi-regulator.c
@@ -1775,7 +1775,7 @@ static int qcom_spmi_regulator_probe(struct platform_device *pdev)
syscon = of_parse_phandle(node, "qcom,saw-reg", 0);
saw_regmap = syscon_node_to_regmap(syscon);
of_node_put(syscon);
- if (IS_ERR(regmap))
+ if (IS_ERR(saw_regmap))
dev_err(dev, "ERROR reading SAW regmap\n");
}
--
2.17.1
For of_find_node_by_name(), you typically pass what the previous call
returned. Therefore, of_find_node_by_name() increases the refcount of
the returned node, and decreases the refcount of the node passed as the
first argument.
of_find_node_by_name() is incorrectly used, and produces a warning.
Fix the warning by using the more suitable function
of_get_child_by_name().
Also add a missing of_node_put() for the returned value, since this was
previously being leaked.
OF: ERROR: Bad of_node_put() on /soc/qcom,spmi@400f000/pmic@3/regulators
CPU: 1 PID: 1 Comm: swapper/0 Tainted: G W 4.18.0-rc4-00223-gefd7b360b70e #12
Hardware name: Qualcomm Technologies, Inc. DB820c (DT)
Call trace:
dump_backtrace+0x0/0x1a8
show_stack+0x14/0x20
dump_stack+0x90/0xb4
of_node_release+0x74/0x78
kobject_put+0x90/0x1f0
of_node_put+0x14/0x20
of_find_node_by_name+0x80/0xd8
qcom_spmi_regulator_probe+0x30c/0x508
Fixes: 0caecaa87202 ("regulator: qcom_spmi: Add support for SAW")
Signed-off-by: Niklas Cassel <[email protected]>
---
Changes since v1:
-Use of_get_child_by_name() instead of of_find_node_by_name().
drivers/regulator/qcom_spmi-regulator.c | 32 +++++++++++++++----------
1 file changed, 20 insertions(+), 12 deletions(-)
diff --git a/drivers/regulator/qcom_spmi-regulator.c b/drivers/regulator/qcom_spmi-regulator.c
index 9817f1a75342..4cc14c65d86b 100644
--- a/drivers/regulator/qcom_spmi-regulator.c
+++ b/drivers/regulator/qcom_spmi-regulator.c
@@ -1752,7 +1752,8 @@ static int qcom_spmi_regulator_probe(struct platform_device *pdev)
const char *name;
struct device *dev = &pdev->dev;
struct device_node *node = pdev->dev.of_node;
- struct device_node *syscon;
+ struct device_node *syscon, *reg_node;
+ struct property *reg_prop;
int ret, lenp;
struct list_head *vreg_list;
@@ -1780,10 +1781,13 @@ static int qcom_spmi_regulator_probe(struct platform_device *pdev)
for (reg = match->data; reg->name; reg++) {
- if (saw_regmap && \
- of_find_property(of_find_node_by_name(node, reg->name), \
- "qcom,saw-slave", &lenp)) {
- continue;
+ if (saw_regmap) {
+ reg_node = of_get_child_by_name(node, reg->name);
+ reg_prop = of_find_property(reg_node, "qcom,saw-slave",
+ &lenp);
+ of_node_put(reg_node);
+ if (reg_prop)
+ continue;
}
vreg = devm_kzalloc(dev, sizeof(*vreg), GFP_KERNEL);
@@ -1816,13 +1820,17 @@ static int qcom_spmi_regulator_probe(struct platform_device *pdev)
if (ret)
continue;
- if (saw_regmap && \
- of_find_property(of_find_node_by_name(node, reg->name), \
- "qcom,saw-leader", &lenp)) {
- spmi_saw_ops = *(vreg->desc.ops);
- spmi_saw_ops.set_voltage_sel = \
- spmi_regulator_saw_set_voltage;
- vreg->desc.ops = &spmi_saw_ops;
+ if (saw_regmap) {
+ reg_node = of_get_child_by_name(node, reg->name);
+ reg_prop = of_find_property(reg_node, "qcom,saw-leader",
+ &lenp);
+ of_node_put(reg_node);
+ if (reg_prop) {
+ spmi_saw_ops = *(vreg->desc.ops);
+ spmi_saw_ops.set_voltage_sel =
+ spmi_regulator_saw_set_voltage;
+ vreg->desc.ops = &spmi_saw_ops;
+ }
}
config.dev = dev;
--
2.17.1
Fix the following checkpatch error:
ERROR: code indent should use tabs where possible
+ { }$
Fixes: ca5cd8c9400c ("regulator: qcom_spmi: Add support for pmi8994")
Signed-off-by: Niklas Cassel <[email protected]>
---
drivers/regulator/qcom_spmi-regulator.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/drivers/regulator/qcom_spmi-regulator.c b/drivers/regulator/qcom_spmi-regulator.c
index 5246f5b870c2..53a61fb65642 100644
--- a/drivers/regulator/qcom_spmi-regulator.c
+++ b/drivers/regulator/qcom_spmi-regulator.c
@@ -1728,7 +1728,7 @@ static const struct spmi_regulator_data pmi8994_regulators[] = {
{ "s2", 0x1700, "vdd_s2", },
{ "s3", 0x1a00, "vdd_s3", },
{ "l1", 0x4000, "vdd_l1", },
- { }
+ { }
};
static const struct of_device_id qcom_spmi_regulator_match[] = {
--
2.17.1
Fix the following checkpatch error:
ERROR: do not initialise statics to NULL
+static struct regmap *saw_regmap = NULL;
Fixes: 0caecaa87202 ("regulator: qcom_spmi: Add support for SAW")
Signed-off-by: Niklas Cassel <[email protected]>
---
drivers/regulator/qcom_spmi-regulator.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/drivers/regulator/qcom_spmi-regulator.c b/drivers/regulator/qcom_spmi-regulator.c
index ba3d5e63ada6..5246f5b870c2 100644
--- a/drivers/regulator/qcom_spmi-regulator.c
+++ b/drivers/regulator/qcom_spmi-regulator.c
@@ -1060,7 +1060,7 @@ static irqreturn_t spmi_regulator_vs_ocp_isr(int irq, void *data)
#define SAW3_AVS_CTL_TGGL_MASK 0x8000000
#define SAW3_AVS_CTL_CLEAR_MASK 0x7efc00
-static struct regmap *saw_regmap = NULL;
+static struct regmap *saw_regmap;
static void spmi_saw_set_vdd(void *data)
{
--
2.17.1
The patch
regulator: qcom_spmi: Fix warning Bad of_node_put()
has been applied to the regulator tree at
https://git.kernel.org/pub/scm/linux/kernel/git/broonie/regulator.git
All being well this means that it will be integrated into the linux-next
tree (usually sometime in the next 24 hours) and sent to Linus during
the next merge window (or sooner if it is a bug fix), however if
problems are discovered then the patch may be dropped or reverted.
You may get further e-mails resulting from automated or manual testing
and review of the tree, please engage with people reporting problems and
send followup patches addressing any issues that are reported if needed.
If any updates are required or you are submitting further changes they
should be sent as incremental updates against current git, existing
patches will not be replaced.
Please add any relevant lists and maintainers to the CCs when replying
to this mail.
Thanks,
Mark
From fffe7f52eb5db41eedadba9a8038e982dcfaee0c Mon Sep 17 00:00:00 2001
From: Niklas Cassel <[email protected]>
Date: Mon, 16 Jul 2018 15:32:51 +0200
Subject: [PATCH] regulator: qcom_spmi: Fix warning Bad of_node_put()
For of_find_node_by_name(), you typically pass what the previous call
returned. Therefore, of_find_node_by_name() increases the refcount of
the returned node, and decreases the refcount of the node passed as the
first argument.
of_find_node_by_name() is incorrectly used, and produces a warning.
Fix the warning by using the more suitable function
of_get_child_by_name().
Also add a missing of_node_put() for the returned value, since this was
previously being leaked.
OF: ERROR: Bad of_node_put() on /soc/qcom,spmi@400f000/pmic@3/regulators
CPU: 1 PID: 1 Comm: swapper/0 Tainted: G W 4.18.0-rc4-00223-gefd7b360b70e #12
Hardware name: Qualcomm Technologies, Inc. DB820c (DT)
Call trace:
dump_backtrace+0x0/0x1a8
show_stack+0x14/0x20
dump_stack+0x90/0xb4
of_node_release+0x74/0x78
kobject_put+0x90/0x1f0
of_node_put+0x14/0x20
of_find_node_by_name+0x80/0xd8
qcom_spmi_regulator_probe+0x30c/0x508
Fixes: 0caecaa87202 ("regulator: qcom_spmi: Add support for SAW")
Signed-off-by: Niklas Cassel <[email protected]>
Signed-off-by: Mark Brown <[email protected]>
---
drivers/regulator/qcom_spmi-regulator.c | 32 +++++++++++++++----------
1 file changed, 20 insertions(+), 12 deletions(-)
diff --git a/drivers/regulator/qcom_spmi-regulator.c b/drivers/regulator/qcom_spmi-regulator.c
index 9817f1a75342..4cc14c65d86b 100644
--- a/drivers/regulator/qcom_spmi-regulator.c
+++ b/drivers/regulator/qcom_spmi-regulator.c
@@ -1752,7 +1752,8 @@ static int qcom_spmi_regulator_probe(struct platform_device *pdev)
const char *name;
struct device *dev = &pdev->dev;
struct device_node *node = pdev->dev.of_node;
- struct device_node *syscon;
+ struct device_node *syscon, *reg_node;
+ struct property *reg_prop;
int ret, lenp;
struct list_head *vreg_list;
@@ -1780,10 +1781,13 @@ static int qcom_spmi_regulator_probe(struct platform_device *pdev)
for (reg = match->data; reg->name; reg++) {
- if (saw_regmap && \
- of_find_property(of_find_node_by_name(node, reg->name), \
- "qcom,saw-slave", &lenp)) {
- continue;
+ if (saw_regmap) {
+ reg_node = of_get_child_by_name(node, reg->name);
+ reg_prop = of_find_property(reg_node, "qcom,saw-slave",
+ &lenp);
+ of_node_put(reg_node);
+ if (reg_prop)
+ continue;
}
vreg = devm_kzalloc(dev, sizeof(*vreg), GFP_KERNEL);
@@ -1816,13 +1820,17 @@ static int qcom_spmi_regulator_probe(struct platform_device *pdev)
if (ret)
continue;
- if (saw_regmap && \
- of_find_property(of_find_node_by_name(node, reg->name), \
- "qcom,saw-leader", &lenp)) {
- spmi_saw_ops = *(vreg->desc.ops);
- spmi_saw_ops.set_voltage_sel = \
- spmi_regulator_saw_set_voltage;
- vreg->desc.ops = &spmi_saw_ops;
+ if (saw_regmap) {
+ reg_node = of_get_child_by_name(node, reg->name);
+ reg_prop = of_find_property(reg_node, "qcom,saw-leader",
+ &lenp);
+ of_node_put(reg_node);
+ if (reg_prop) {
+ spmi_saw_ops = *(vreg->desc.ops);
+ spmi_saw_ops.set_voltage_sel =
+ spmi_regulator_saw_set_voltage;
+ vreg->desc.ops = &spmi_saw_ops;
+ }
}
config.dev = dev;
--
2.18.0