Add `__free` function attribute to `np` device_node pointer
initialisation and remove of_node_put cleanup for this pointer.
The `__free` attribute is used for scope based cleanup instead of
manually freeing the resource using `of_node_put`, making cleanup
simpler and safer.
Suggested-by: Julia Lawall <julia.lawall@xxxxxxxx>
Signed-off-by: Shresth Prasad <shresthprasad7@xxxxxxxxx>
---
drivers/video/backlight/sky81452-backlight.c | 8 ++------
1 file changed, 2 insertions(+), 6 deletions(-)
diff --git a/drivers/video/backlight/sky81452-backlight.c b/drivers/video/backlight/sky81452-backlight.c
index eb18c6eb0ff0..3c5d8125080c 100644
--- a/drivers/video/backlight/sky81452-backlight.c
+++ b/drivers/video/backlight/sky81452-backlight.c
@@ -182,7 +182,7 @@ static const struct attribute_group sky81452_bl_attr_group = {
static struct sky81452_bl_platform_data *sky81452_bl_parse_dt(
struct device *dev)
{
- struct device_node *np = of_node_get(dev->of_node);
+ struct device_node *np __free(device_node) = of_node_get(dev->of_node);
struct sky81452_bl_platform_data *pdata;
int num_entry;
unsigned int sources[6];
@@ -194,10 +194,8 @@ static struct sky81452_bl_platform_data *sky81452_bl_parse_dt(
}
pdata = devm_kzalloc(dev, sizeof(*pdata), GFP_KERNEL);
- if (!pdata) {
- of_node_put(np);
+ if (!pdata)
return ERR_PTR(-ENOMEM);
- }
of_property_read_string(np, "name", &pdata->name);
pdata->ignore_pwm = of_property_read_bool(np, "skyworks,ignore-pwm");
@@ -217,7 +215,6 @@ static struct sky81452_bl_platform_data *sky81452_bl_parse_dt(
num_entry);
if (ret < 0) {
dev_err(dev, "led-sources node is invalid.\n");
- of_node_put(np);
return ERR_PTR(-EINVAL);
}
@@ -237,7 +234,6 @@ static struct sky81452_bl_platform_data *sky81452_bl_parse_dt(
if (ret < 0)
pdata->boost_current_limit = 2750;
- of_node_put(np);
return pdata;
}
#else
--
2.44.0
