soc: imx8: Use existing of_root directly

There is common of_root for reference, no need to find it
from DT again, use of_root directly to make driver simple.

Signed-off-by: Anson Huang <Anson.Huang@nxp.com>
Signed-off-by: Shawn Guo <shawnguo@kernel.org>

diff --git a/drivers/soc/imx/soc-imx8.c b/drivers/soc/imx/soc-imx8.c
index ef2406f..34ab993 100644 (file)
--- a/drivers/soc/imx/soc-imx8.c
+++ b/drivers/soc/imx/soc-imx8.c
@@ -94,7 +94,6 @@ static int __init imx8_soc_init(void)
 {
        struct soc_device_attribute *soc_dev_attr;
        struct soc_device *soc_dev;
-       struct device_node *root;
        const struct of_device_id *id;
        u32 soc_rev = 0;
        const struct imx8_soc_data *data;
@@ -106,12 +105,11 @@ static int __init imx8_soc_init(void)
 
        soc_dev_attr->family = "Freescale i.MX";
 
-       root = of_find_node_by_path("/");
-       ret = of_property_read_string(root, "model", &soc_dev_attr->machine);
+       ret = of_property_read_string(of_root, "model", &soc_dev_attr->machine);
        if (ret)
                goto free_soc;
 
-       id = of_match_node(imx8_soc_match, root);
+       id = of_match_node(imx8_soc_match, of_root);
        if (!id) {
                ret = -ENODEV;
                goto free_soc;
@@ -136,8 +134,6 @@ static int __init imx8_soc_init(void)
                goto free_rev;
        }
 
-       of_node_put(root);
-
        return 0;
 
 free_rev:
@@ -145,7 +141,6 @@ free_rev:
                kfree(soc_dev_attr->revision);
 free_soc:
        kfree(soc_dev_attr);
-       of_node_put(root);
        return ret;
 }
 device_initcall(imx8_soc_init);