[PATCH v3 6/6] phy: core: Simplify API of_phy_simple_xlate() implementation

[Zijun Hu]

From: Zijun Hu <quic_zijuhu at quicinc.com>

Simplify of_phy_simple_xlate() implementation by API
class_find_device_by_of_node() which is also safer since it subsys_get()
the class's subsystem in advance of iterating over the class's devices.

Also correct comments to mark its parameter @dev as unused instead of
@args in passing.

Signed-off-by: Zijun Hu <quic_zijuhu at quicinc.com>
---
 drivers/phy/phy-core.c | 20 +++++++-------------
 1 file changed, 7 insertions(+), 13 deletions(-)

diff --git a/drivers/phy/phy-core.c b/drivers/phy/phy-core.c
index 9d4cc64a0865..39476ca9e51c 100644
--- a/drivers/phy/phy-core.c
+++ b/drivers/phy/phy-core.c
@@ -749,8 +749,8 @@ EXPORT_SYMBOL_GPL(devm_phy_put);
 
 /**
  * of_phy_simple_xlate() - returns the phy instance from phy provider
- * @dev: the PHY provider device
- * @args: of_phandle_args (not used here)
+ * @dev: the PHY provider device (not used here)
+ * @args: of_phandle_args
  *
  * Intended to be used by phy provider for the common case where #phy-cells is
  * 0. For other cases where #phy-cells is greater than '0', the phy provider
@@ -760,20 +760,14 @@ EXPORT_SYMBOL_GPL(devm_phy_put);
 struct phy *of_phy_simple_xlate(struct device *dev,
 				const struct of_phandle_args *args)
 {
-	struct phy *phy;
-	struct class_dev_iter iter;
-
-	class_dev_iter_init(&iter, &phy_class, NULL, NULL);
-	while ((dev = class_dev_iter_next(&iter))) {
-		phy = to_phy(dev);
-		if (args->np != phy->dev.of_node)
-			continue;
+	struct device *target_dev;
 
-		class_dev_iter_exit(&iter);
-		return phy;
+	target_dev = class_find_device_by_of_node(&phy_class, args->np);
+	if (target_dev) {
+		put_device(target_dev);
+		return to_phy(target_dev);
 	}
 
-	class_dev_iter_exit(&iter);
 	return ERR_PTR(-ENODEV);
 }
 EXPORT_SYMBOL_GPL(of_phy_simple_xlate);

-- 
2.34.1