[4/6] leds: is31fl319x: use device_for_each_child_node_scoped() to access child nodes

Commit Message

Javier Carrasco July 6, 2024, 3:23 p.m. UTC

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.

Signed-off-by: Javier Carrasco <[e-mail]>
---
 drivers/leds/leds-is31fl319x.c | 34 +++++++++++-----------------------
 1 file changed, 11 insertions(+), 23 deletions(-)

Comments

Jonathan Cameron July 7, 2024, 4:58 p.m. UTC | #1

On Sat, 06 Jul 2024 17:23:36 +0200
Javier Carrasco <[e-mail]> wrote:

> 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.
> 
> Signed-off-by: Javier Carrasco <[e-mail]>
Reviewed-by: Jonathan Cameron <[e-mail]>

Patch

diff --git a/drivers/leds/leds-is31fl319x.c b/drivers/leds/leds-is31fl319x.c
index 5e1a4d39a107..27bfab3da479 100644
--- a/drivers/leds/leds-is31fl319x.c
+++ b/drivers/leds/leds-is31fl319x.c
@@ -392,7 +392,7 @@  static int is31fl319x_parse_child_fw(const struct device *dev,
 
 static int is31fl319x_parse_fw(struct device *dev, struct is31fl319x_chip *is31)
 {
-	struct fwnode_handle *fwnode = dev_fwnode(dev), *child;
+	struct fwnode_handle *fwnode = dev_fwnode(dev);
 	int count;
 	int ret;
 
@@ -404,7 +404,7 @@  static int is31fl319x_parse_fw(struct device *dev, struct is31fl319x_chip *is31)
 	is31->cdef = device_get_match_data(dev);
 
 	count = 0;
-	fwnode_for_each_available_child_node(fwnode, child)
+	device_for_each_child_node_scoped(dev, child)
 		count++;
 
 	dev_dbg(dev, "probing with %d leds defined in DT\n", count);
@@ -414,33 +414,25 @@  static int is31fl319x_parse_fw(struct device *dev, struct is31fl319x_chip *is31)
 				     "Number of leds defined must be between 1 and %u\n",
 				     is31->cdef->num_leds);
 
-	fwnode_for_each_available_child_node(fwnode, child) {
+	device_for_each_child_node_scoped(dev, child) {
 		struct is31fl319x_led *led;
 		u32 reg;
 
 		ret = fwnode_property_read_u32(child, "reg", &reg);
-		if (ret) {
-			ret = dev_err_probe(dev, ret, "Failed to read led 'reg' property\n");
-			goto put_child_node;
-		}
+		if (ret)
+			return dev_err_probe(dev, ret, "Failed to read led 'reg' property\n");
 
-		if (reg < 1 || reg > is31->cdef->num_leds) {
-			ret = dev_err_probe(dev, -EINVAL, "invalid led reg %u\n", reg);
-			goto put_child_node;
-		}
+		if (reg < 1 || reg > is31->cdef->num_leds)
+			return dev_err_probe(dev, -EINVAL, "invalid led reg %u\n", reg);
 
 		led = &is31->leds[reg - 1];
 
-		if (led->configured) {
-			ret = dev_err_probe(dev, -EINVAL, "led %u is already configured\n", reg);
-			goto put_child_node;
-		}
+		if (led->configured)
+			return dev_err_probe(dev, -EINVAL, "led %u is already configured\n", reg);
 
 		ret = is31fl319x_parse_child_fw(dev, child, led, is31);
-		if (ret) {
-			ret = dev_err_probe(dev, ret, "led %u DT parsing failed\n", reg);
-			goto put_child_node;
-		}
+		if (ret)
+			return dev_err_probe(dev, ret, "led %u DT parsing failed\n", reg);
 
 		led->configured = true;
 	}
@@ -454,10 +446,6 @@  static int is31fl319x_parse_fw(struct device *dev, struct is31fl319x_chip *is31)
 	}
 
 	return 0;
-
-put_child_node:
-	fwnode_handle_put(child);
-	return ret;
 }
 
 static inline int is31fl3190_microamp_to_cs(struct device *dev, u32 microamp)