hwmon: (ltc2992) use device_for_each_child_node_scoped() to access child nodes

The iterated nodes are direct children of the device node, and the
`device_for_each_child_node()` macro accounts for child node
availability.

`fwnode_for_each_available_child_node()` is meant to access the child
nodes of an fwnode, and therefore not direct child nodes of the device
node.

In this case, the child nodes are not required outside the loop, and
the scoped version of the macro can be used to remove the repetitive
`goto put` pattern.

Use `device_for_each_child_node_scoped_scoped()` to indicate device's
direct child nodes.

Reviewed-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
Signed-off-by: Javier Carrasco <javier.carrasco.cruz@gmail.com>
Link: https://lore.kernel.org/r/20240721-device_for_each_child_node-available-v2-2-f33748fd8b2d@gmail.com
Signed-off-by: Guenter Roeck <linux@roeck-us.net>

diff --git a/drivers/hwmon/ltc2992.c b/drivers/hwmon/ltc2992.c
index d4a93223cd3b34716bf50dec258b7d1c04fb0b45..541fa09dc6e7d161ce3b9041275c7b90645413fd 100644 (file)
--- a/drivers/hwmon/ltc2992.c
+++ b/drivers/hwmon/ltc2992.c
@@ -854,33 +854,24 @@ static const struct regmap_config ltc2992_regmap_config = {
 
 static int ltc2992_parse_dt(struct ltc2992_state *st)
 {
-       struct fwnode_handle *fwnode;
-       struct fwnode_handle *child;
        u32 addr;
        u32 val;
        int ret;
 
-       fwnode = dev_fwnode(&st->client->dev);
-
-       fwnode_for_each_available_child_node(fwnode, child) {
+       device_for_each_child_node_scoped(&st->client->dev, child) {
                ret = fwnode_property_read_u32(child, "reg", &addr);
-               if (ret < 0) {
-                       fwnode_handle_put(child);
+               if (ret < 0)
                        return ret;
-               }
 
-               if (addr > 1) {
-                       fwnode_handle_put(child);
+               if (addr > 1)
                        return -EINVAL;
-               }
 
                ret = fwnode_property_read_u32(child, "shunt-resistor-micro-ohms", &val);
                if (!ret) {
-                       if (!val) {
-                               fwnode_handle_put(child);
+                       if (!val)
                                return dev_err_probe(&st->client->dev, -EINVAL,
                                                     "shunt resistor value cannot be zero\n");
-                       }
+
                        st->r_sense_uohm[addr] = val;
                }
        }