net: davinci_emac: simplify the OF parser code

This patch cleans up the OF parser code, removes unnecessary checks
on of_property_read_*() and guards davinci_emac_of_match table with
CONFIG_OF.

Signed-off-by: Lad, Prabhakar <prabhakar.csengg@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

1 files changed, 23 insertions, 44 deletions

diff --git a/drivers/net/ethernet/ti/davinci_emac.c b/drivers/net/ethernet/ti/davinci_emac.c
index 7a66f9c33159..f118d7133128 100644
--- a/drivers/net/ethernet/ti/davinci_emac.c
+++ b/drivers/net/ethernet/ti/davinci_emac.c
@@ -1754,29 +1754,22 @@ static const struct net_device_ops emac_netdev_ops = {
 #endif
 };
 
-#ifdef CONFIG_OF
-static struct emac_platform_data
-        *davinci_emac_of_get_pdata(struct platform_device *pdev,
-        struct emac_priv *priv)
+static struct emac_platform_data *
+davinci_emac_of_get_pdata(struct platform_device *pdev, struct emac_priv *priv)
 {
         struct device_node *np;
         struct emac_platform_data *pdata = NULL;
         const u8 *mac_addr;
-        u32 data;
-        int ret;
 
-        pdata = pdev->dev.platform_data;
-        if (!pdata) {
-                pdata = devm_kzalloc(&pdev->dev, sizeof(*pdata), GFP_KERNEL);
-                if (!pdata)
-                        goto nodata;
-        }
+        if (!IS_ENABLED(CONFIG_OF) || !pdev->dev.of_node)
+                return pdev->dev.platform_data;
+
+        pdata = devm_kzalloc(&pdev->dev, sizeof(*pdata), GFP_KERNEL);
+        if (!pdata)
+                return NULL;
 
         np = pdev->dev.of_node;
-        if (!np)
-                goto nodata;
-        else
-                pdata->version = EMAC_VERSION_2;
+        pdata->version = EMAC_VERSION_2;
 
         if (!is_valid_ether_addr(pdata->mac_addr)) {
                 mac_addr = of_get_mac_address(np);
@@ -1784,47 +1777,31 @@ static struct emac_platform_data
                         memcpy(pdata->mac_addr, mac_addr, ETH_ALEN);
         }
 
-        ret = of_property_read_u32(np, "ti,davinci-ctrl-reg-offset", &data);
-        if (!ret)
-                pdata->ctrl_reg_offset = data;
+        of_property_read_u32(np, "ti,davinci-ctrl-reg-offset",
+                             &pdata->ctrl_reg_offset);
 
-        ret = of_property_read_u32(np, "ti,davinci-ctrl-mod-reg-offset",
-                &data);
-        if (!ret)
-                pdata->ctrl_mod_reg_offset = data;
+        of_property_read_u32(np, "ti,davinci-ctrl-mod-reg-offset",
+                             &pdata->ctrl_mod_reg_offset);
 
-        ret = of_property_read_u32(np, "ti,davinci-ctrl-ram-offset", &data);
-        if (!ret)
-                pdata->ctrl_ram_offset = data;
+        of_property_read_u32(np, "ti,davinci-ctrl-ram-offset",
+                             &pdata->ctrl_ram_offset);
 
-        ret = of_property_read_u32(np, "ti,davinci-ctrl-ram-size", &data);
-        if (!ret)
-                pdata->ctrl_ram_size = data;
+        of_property_read_u32(np, "ti,davinci-ctrl-ram-size",
+                             &pdata->ctrl_ram_size);
 
-        ret = of_property_read_u32(np, "ti,davinci-rmii-en", &data);
-        if (!ret)
-                pdata->rmii_en = data;
+        of_property_read_u8(np, "ti,davinci-rmii-en", &pdata->rmii_en);
 
-        ret = of_property_read_u32(np, "ti,davinci-no-bd-ram", &data);
-        if (!ret)
-                pdata->no_bd_ram = data;
+        pdata->no_bd_ram = of_property_read_bool(np, "ti,davinci-no-bd-ram");
 
         priv->phy_node = of_parse_phandle(np, "phy-handle", 0);
         if (!priv->phy_node)
                 pdata->phy_id = "";
 
         pdev->dev.platform_data = pdata;
-nodata:
+
         return  pdata;
 }
-#else
-static struct emac_platform_data
-        *davinci_emac_of_get_pdata(struct platform_device *pdev,
-        struct emac_priv *priv)
-{
-        return  pdev->dev.platform_data;
-}
-#endif
+
 /**
  * davinci_emac_probe - EMAC device probe
  * @pdev: The DaVinci EMAC device that we are removing
@@ -2045,11 +2022,13 @@ static const struct dev_pm_ops davinci_emac_pm_ops = {
         .resume         = davinci_emac_resume,
 };
 
+#if IS_ENABLED(CONFIG_OF)
 static const struct of_device_id davinci_emac_of_match[] = {
         {.compatible = "ti,davinci-dm6467-emac", },
         {},
 };
 MODULE_DEVICE_TABLE(of, davinci_emac_of_match);
+#endif
 
 /* davinci_emac_driver: EMAC platform driver structure */
 static struct platform_driver davinci_emac_driver = {