From 5bd568f5d2c95dbfeda4425c0d355093e29ae7f2 Mon Sep 17 00:00:00 2001
From: Axel Lin <axel.lin@ingics.com>
Date: Tue, 24 Feb 2015 19:53:45 +0800
Subject: 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>
---
drivers/phy/phy-miphy365x.c | 11 ++++++-----
1 file changed, 6 insertions(+), 5 deletions(-)
(limited to 'drivers/phy/phy-miphy365x.c')
diff --git a/drivers/phy/phy-miphy365x.c b/drivers/phy/phy-miphy365x.c
index 6c80154e8bff..61177a6c465a 100644
--- 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;
--
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