[PATCH 04/10] Input: twl6040-vibra - use cleanup facility for device_node

Javier Carrasco
2024-10-10T21:26:09Z

Use the '__free(device_node)' macro to simplify the code and error
handling. This makes the error handling more robust by ensuring that the
device node is always freed.

Signed-off-by: Javier Carrasco <javier.carrasco.cruz@gmail.com>
---
drivers/input/misc/twl6040-vibra.c | 8 ++------
1 file changed, 2 insertions(+), 6 deletions(-)

diff --git a/drivers/input/misc/twl6040-vibra.c b/drivers/input/misc/twl6040-vibra.c
index 78f0b63e5c20..afed9af65bf9 100644
--- a/drivers/input/misc/twl6040-vibra.c
+++ b/drivers/input/misc/twl6040-vibra.c
@@ -229,14 +229,13 @@ static DEFINE_SIMPLE_DEV_PM_OPS(twl6040_vibra_pm_ops,
static int twl6040_vibra_probe(struct platform_device *pdev)
{
struct device *twl6040_core_dev = pdev->dev.parent;
- struct device_node *twl6040_core_node;
struct vibra_info *info;
int vddvibl_uV = 0;
int vddvibr_uV = 0;
int error;

- twl6040_core_node = of_get_child_by_name(twl6040_core_dev->of_node,
- "vibra");
+ struct device_node *twl6040_core_node __free(device_node) =
+ of_get_child_by_name(twl6040_core_dev->of_node, "vibra");
if (!twl6040_core_node) {
dev_err(&pdev->dev, "parent of node is missing?\n");
return -EINVAL;
@@ -244,7 +243,6 @@ static int twl6040_vibra_probe(struct platform_device *pdev)

info = devm_kzalloc(&pdev->dev, sizeof(*info), GFP_KERNEL);
if (!info) {
- of_node_put(twl6040_core_node);
dev_err(&pdev->dev, "couldn't allocate memory\n");
return -ENOMEM;
}
@@ -264,8 +262,6 @@ static int twl6040_vibra_probe(struct platform_device *pdev)
of_property_read_u32(twl6040_core_node, "ti,vddvibl-uV", &vddvibl_uV);
of_property_read_u32(twl6040_core_node, "ti,vddvibr-uV", &vddvibr_uV);

- of_node_put(twl6040_core_node);
-
if ((!info->vibldrv_res && !info->viblmotor_res) ||
(!info->vibrdrv_res && !info->vibrmotor_res)) {
dev_err(info->dev, "invalid vibra driver/motor resistance\n");

--
2.43.0