Author: Himangi Saraogi <himangi774@gmail.com>
This patch moves data allocated using kzalloc to managed data allocated
using devm_kzalloc and cleans now unnecessary kfrees in probe and remove
functions. Also, the unnecessary label out_free is removed.
The following Coccinelle semantic patch was used for making the change:
@platform@
identifier p, probefn, removefn;
@@
struct platform_driver p = {
.probe = probefn,
.remove = removefn,
};
@prb@
identifier platform.probefn, pdev;
expression e, e1, e2;
@@
probefn(struct platform_device *pdev, ...) {
<+...
- e = kzalloc(e1, e2)
+ e = devm_kzalloc(&pdev->dev, e1, e2)
...
?-kfree(e);
...+>
}
@rem depends on prb@
identifier platform.removefn;
expression e;
@@
removefn(...) {
<...
- kfree(e);
...>
}
Signed-off-by: Himangi Saraogi
Signed-off-by: Guenter Roeck
---
drivers/hwmon/ultra45_env.c | 7 ++-----
1 file changed, 2 insertions(+), 5 deletions(-)
diff --git a/drivers/hwmon/ultra45_env.c b/drivers/hwmon/ultra45_env.c
index fb3e693..7d46586 100644
--- a/drivers/hwmon/ultra45_env.c
+++ b/drivers/hwmon/ultra45_env.c
@@ -252,7 +252,7 @@ static const struct attribute_group env_group = {
static int env_probe(struct platform_device *op)
{
- struct env *p = kzalloc(sizeof(*p), GFP_KERNEL);
+ struct env *p = devm_kzalloc(&op->dev, sizeof(*p), GFP_KERNEL);
int err = -ENOMEM;
if (!p)
@@ -262,7 +262,7 @@ static int env_probe(struct platform_device *op)
p->regs = of_ioremap(&op->resource[0], 0, REG_SIZE, "pic16f747");
if (!p->regs)
- goto out_free;
+ goto out;
err = sysfs_create_group(&op->dev.kobj, &env_group);
if (err)
@@ -286,8 +286,6 @@ out_sysfs_remove_group:
out_iounmap:
of_iounmap(&op->resource[0], p->regs, REG_SIZE);
-out_free:
- kfree(p);
goto out;
}
@@ -299,7 +297,6 @@ static int env_remove(struct platform_device *op)
sysfs_remove_group(&op->dev.kobj, &env_group);
hwmon_device_unregister(p->hwmon_dev);
of_iounmap(&op->resource[0], p->regs, REG_SIZE);
- kfree(p);
}
return 0; |
---
drivers/hwmon/ultra45_env.c | 7 ++-----
1 file changed, 2 insertions(+), 5 deletions(-)
diff --git a/drivers/hwmon/ultra45_env.c b/drivers/hwmon/ultra45_env.c
index fb3e693..7d46586 100644
--- a/drivers/hwmon/ultra45_env.c
+++ b/drivers/hwmon/ultra45_env.c
@@ -252,7 +252,7 @@ static const struct attribute_group env_group = {
static int env_probe(struct platform_device *op)
{
- struct env *p = kzalloc(sizeof(*p), GFP_KERNEL);
+ struct env *p = devm_kzalloc(&op->dev, sizeof(*p), GFP_KERNEL);
int err = -ENOMEM;
if (!p)
@@ -262,7 +262,7 @@ static int env_probe(struct platform_device *op)
p->regs = of_ioremap(&op->resource[0], 0, REG_SIZE, "pic16f747");
if (!p->regs)
- goto out_free;
+ goto out;
err = sysfs_create_group(&op->dev.kobj, &env_group);
if (err)
@@ -286,8 +286,6 @@ out_sysfs_remove_group:
out_iounmap:
of_iounmap(&op->resource[0], p->regs, REG_SIZE);
-out_free:
- kfree(p);
goto out;
}
@@ -299,7 +297,6 @@ static int env_remove(struct platform_device *op)
sysfs_remove_group(&op->dev.kobj, &env_group);
hwmon_device_unregister(p->hwmon_dev);
of_iounmap(&op->resource[0], p->regs, REG_SIZE);
- kfree(p);
}
return 0;
