phy: miphy365x: Avoid calling of_get_child_count() multiple times

Currently, of_get_child_count() is called in each iteration of the for loop in
miphy365x_xlate(). This patch stores the return value of of_get_child_count()
in miphy_dev->nphys and call of_get_child_count() once in miphy365x_probe().

Signed-off-by: Axel Lin <axel.lin@ingics.com>
Signed-off-by: Kishon Vijay Abraham I <kishon@ti.com>

diff --git a/drivers/phy/phy-miphy365x.c b/drivers/phy/phy-miphy365x.c
index 6c80154..61177a6 100644 (file)
--- a/drivers/phy/phy-miphy365x.c
+++ b/drivers/phy/phy-miphy365x.c
@@ -150,6 +150,7 @@ struct miphy365x_dev {
        struct regmap *regmap;
        struct mutex miphy_mutex;
        struct miphy365x_phy **phys;
+       int nphys;
 };
 
 /*
@@ -485,7 +486,7 @@ static struct phy *miphy365x_xlate(struct device *dev,
                return ERR_PTR(-EINVAL);
        }
 
-       for (index = 0; index < of_get_child_count(dev->of_node); index++)
+       for (index = 0; index < miphy_dev->nphys; index++)
                if (phynode == miphy_dev->phys[index]->phy->dev.of_node) {
                        miphy_phy = miphy_dev->phys[index];
                        break;
@@ -541,15 +542,15 @@ static int miphy365x_probe(struct platform_device *pdev)
        struct miphy365x_dev *miphy_dev;
        struct phy_provider *provider;
        struct phy *phy;
-       int chancount, port = 0;
-       int ret;
+       int ret, port = 0;
 
        miphy_dev = devm_kzalloc(&pdev->dev, sizeof(*miphy_dev), GFP_KERNEL);
        if (!miphy_dev)
                return -ENOMEM;
 
-       chancount = of_get_child_count(np);
-       miphy_dev->phys = devm_kzalloc(&pdev->dev, sizeof(phy) * chancount,
+       miphy_dev->nphys = of_get_child_count(np);
+       miphy_dev->phys = devm_kzalloc(&pdev->dev,
+                                      sizeof(phy) * miphy_dev->nphys,
                                       GFP_KERNEL);
        if (!miphy_dev->phys)
                return -ENOMEM;