pinctrl: th1520: Convert dt child node loop to scoped iterator

Convert th1520_pinctrl_dt_node_to_map() to use a scoped iterator with
for_each_available_child_of_node_scoped(). As a result, there is no need
to call of_node_put() anymore. The put_child label has been renamed to
free_map which is now a more accurate description.

Suggested-by: Linus Walleij <linus.walleij@linaro.org>
Signed-off-by: Drew Fustini <dfustini@tenstorrent.com>
Link: https://lore.kernel.org/20241008-th1520-pinctrl-fixes-v3-3-5b60db446a49@tenstorrent.com
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>

diff --git a/drivers/pinctrl/pinctrl-th1520.c b/drivers/pinctrl/pinctrl-th1520.c
index 7ed3f82..c8d2ee6 100644 (file)
--- a/drivers/pinctrl/pinctrl-th1520.c
+++ b/drivers/pinctrl/pinctrl-th1520.c
@@ -417,7 +417,6 @@ static int th1520_pinctrl_dt_node_to_map(struct pinctrl_dev *pctldev,
                                         unsigned int *num_maps)
 {
        struct th1520_pinctrl *thp = pinctrl_dev_get_drvdata(pctldev);
-       struct device_node *child;
        struct pinctrl_map *map;
        unsigned long *configs;
        unsigned int nconfigs;
@@ -425,11 +424,10 @@ static int th1520_pinctrl_dt_node_to_map(struct pinctrl_dev *pctldev,
        int ret;
 
        nmaps = 0;
-       for_each_available_child_of_node(np, child) {
+       for_each_available_child_of_node_scoped(np, child) {
                int npins = of_property_count_strings(child, "pins");
 
                if (npins <= 0) {
-                       of_node_put(child);
                        dev_err(thp->pctl->dev, "no pins selected for %pOFn.%pOFn\n",
                                np, child);
                        return -EINVAL;
@@ -445,7 +443,7 @@ static int th1520_pinctrl_dt_node_to_map(struct pinctrl_dev *pctldev,
 
        nmaps = 0;
        guard(mutex)(&thp->mutex);
-       for_each_available_child_of_node(np, child) {
+       for_each_available_child_of_node_scoped(np, child) {
                unsigned int rollback = nmaps;
                enum th1520_muxtype muxtype;
                struct property *prop;
@@ -458,7 +456,7 @@ static int th1520_pinctrl_dt_node_to_map(struct pinctrl_dev *pctldev,
                if (ret) {
                        dev_err(thp->pctl->dev, "%pOFn.%pOFn: error parsing pin config\n",
                                np, child);
-                       goto put_child;
+                       goto free_map;
                }
 
                if (!of_property_read_string(child, "function", &funcname)) {
@@ -524,7 +522,7 @@ static int th1520_pinctrl_dt_node_to_map(struct pinctrl_dev *pctldev,
                                                          npins, (void *)muxtype);
                        if (ret < 0) {
                                dev_err(thp->pctl->dev, "error adding function %s\n", funcname);
-                               goto put_child;
+                               goto free_map;
                        }
                }
        }
@@ -535,8 +533,7 @@ static int th1520_pinctrl_dt_node_to_map(struct pinctrl_dev *pctldev,
 
 free_configs:
        kfree(configs);
-put_child:
-       of_node_put(child);
+free_map:
        th1520_pinctrl_dt_free_map(pctldev, map, nmaps);
        return ret;
 }