diff --git a/target/linux/mediatek/files-5.4/drivers/net/phy/mtk/mt753x/mt7531.c b/target/linux/mediatek/files-5.4/drivers/net/phy/mtk/mt753x/mt7531.c
index 74b27d6..04e6b4e 100755
--- a/target/linux/mediatek/files-5.4/drivers/net/phy/mtk/mt753x/mt7531.c
+++ b/target/linux/mediatek/files-5.4/drivers/net/phy/mtk/mt753x/mt7531.c
@@ -1038,6 +1038,7 @@
 	u32 pmcr;
 	u32 speed;
 
+	pdev = container_of(gsw->dev, struct platform_device, dev);
 	switch_node = of_find_node_by_name(NULL, "switch0");
 	if (switch_node == NULL) {
 		dev_err(&pdev->dev, "switch node invaild\n");
@@ -1050,7 +1051,6 @@
 		return -EIO;
 	}
 
-	pdev = container_of(gsw->dev, struct platform_device, dev);
 	gsw->sysctrl_base = syscon_regmap_lookup_by_phandle(pdev->dev.of_node,
 							"mediatek,sysctrl");
 	if (IS_ERR(gsw->sysctrl_base)) {
diff --git a/target/linux/mediatek/files-5.4/drivers/net/phy/mtk/mt753x/mt753x_mdio.c b/target/linux/mediatek/files-5.4/drivers/net/phy/mtk/mt753x/mt753x_mdio.c
index 03eb5b4..cde681a 100644
--- a/target/linux/mediatek/files-5.4/drivers/net/phy/mtk/mt753x/mt753x_mdio.c
+++ b/target/linux/mediatek/files-5.4/drivers/net/phy/mtk/mt753x/mt753x_mdio.c
@@ -495,7 +495,7 @@
 	struct device_node *np = gsw->dev->of_node;
 	struct reset_control *rstc;
 	int mcm;
-	int ret = -EINVAL;
+	int ret;
 
 	mcm = of_property_read_bool(np, "mediatek,mcm");
 	if (mcm) {
diff --git a/target/linux/mediatek/files-5.4/drivers/net/phy/mtk/mt753x/mt753x_nl.c b/target/linux/mediatek/files-5.4/drivers/net/phy/mtk/mt753x/mt753x_nl.c
index cee89db..fa8e595 100644
--- a/target/linux/mediatek/files-5.4/drivers/net/phy/mtk/mt753x/mt753x_nl.c
+++ b/target/linux/mediatek/files-5.4/drivers/net/phy/mtk/mt753x/mt753x_nl.c
@@ -75,8 +75,10 @@
 		len = snprintf(buf, sizeof(buf),
 			       "id: %d, model: %s, node: %s\n",
 			       gsw->id, gsw->name, gsw->dev->of_node->name);
-		strncat(buff, buf, size - total);
-		total += len;
+		if (len == strlen(buf)) {
+			strncat(buff, buf, size - total);
+			total += len;
+		}
 	}
 
 	mt753x_put_gsw();