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ata: libahci_platform: Simplify code with for_each_child_of_node_scoped()

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for_each_child_of_node_scoped() can put the device_node automatically.
So let's use it to make the code simpler by avoiding the need to
explicitly call of_node_put().

Signed-off-by: Zhang Zekun <zhangzekun11@huawei.com>
Link: https://lore.kernel.org/r/20240810023426.110624-1-zhangzekun11@huawei.com
Signed-off-by: Niklas Cassel <cassel@kernel.org>
This commit is contained in:
Zhang Zekun 2024-08-10 10:34:26 +08:00 committed by Niklas Cassel
parent 6773e058ae
commit aa3ca1faf3
1 changed files with 5 additions and 14 deletions
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19
drivers/ata/libahci_platform.c
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@ -410,7 +410,6 @@ static int ahci_platform_get_regulator(struct ahci_host_priv *hpriv, u32 port,
static int ahci_platform_get_firmware(struct ahci_host_priv *hpriv,
struct device *dev)
{
struct device_node *child;
u32 port;
if (!of_property_read_u32(dev->of_node, "hba-cap", &hpriv->saved_cap))
@ -419,14 +418,12 @@ static int ahci_platform_get_firmware(struct ahci_host_priv *hpriv,
of_property_read_u32(dev->of_node,
"ports-implemented", &hpriv->saved_port_map);
for_each_child_of_node(dev->of_node, child) {
for_each_child_of_node_scoped(dev->of_node, child) {
if (!of_device_is_available(child))
continue;
if (of_property_read_u32(child, "reg", &port)) {
of_node_put(child);
if (of_property_read_u32(child, "reg", &port))
return -EINVAL;
}
if (!of_property_read_u32(child, "hba-port-cap", &hpriv->saved_port_cap[port]))
hpriv->saved_port_cap[port] &= PORT_CMD_CAP;
@ -460,7 +457,6 @@ struct ahci_host_priv *ahci_platform_get_resources(struct platform_device *pdev,
int child_nodes, rc = -ENOMEM, enabled_ports = 0;
struct device *dev = &pdev->dev;
struct ahci_host_priv *hpriv;
struct device_node *child;
u32 mask_port_map = 0;
if (!devres_open_group(dev, NULL, GFP_KERNEL))
@ -579,7 +575,7 @@ struct ahci_host_priv *ahci_platform_get_resources(struct platform_device *pdev,
}
if (child_nodes) {
for_each_child_of_node(dev->of_node, child) {
for_each_child_of_node_scoped(dev->of_node, child) {
u32 port;
struct platform_device *port_dev __maybe_unused;
@ -588,7 +584,6 @@ struct ahci_host_priv *ahci_platform_get_resources(struct platform_device *pdev,
if (of_property_read_u32(child, "reg", &port)) {
rc = -EINVAL;
of_node_put(child);
goto err_out;
}
@ -606,18 +601,14 @@ struct ahci_host_priv *ahci_platform_get_resources(struct platform_device *pdev,
if (port_dev) {
rc = ahci_platform_get_regulator(hpriv, port,
&port_dev->dev);
if (rc == -EPROBE_DEFER) {
of_node_put(child);
if (rc == -EPROBE_DEFER)
goto err_out;
}
}
#endif
rc = ahci_platform_get_phy(hpriv, port, dev, child);
if (rc) {
of_node_put(child);
if (rc)
goto err_out;
}
enabled_ports++;
}