diff --git a/drivers/net/wireless/ti/wl18xx/main.c b/drivers/net/wireless/ti/wl18xx/main.c
index b378b34c4a6acfb296a393aac7217e2f8f804552..8bb21b6458b88449bfe55f34c98dfe5b6e35441c 100644
--- a/drivers/net/wireless/ti/wl18xx/main.c
+++ b/drivers/net/wireless/ti/wl18xx/main.c
@@ -772,16 +772,24 @@ static int wl18xx_pre_upload(struct wl1271 *wl)
 static int wl18xx_set_mac_and_phy(struct wl1271 *wl)
 {
 	struct wl18xx_priv *priv = wl->priv;
+	struct wl18xx_mac_and_phy_params *params;
 	int ret;
 
+	params = kmemdup(&priv->conf.phy, sizeof(*params), GFP_KERNEL);
+	if (!params) {
+		ret = -ENOMEM;
+		goto out;
+	}
+
 	ret = wlcore_set_partition(wl, &wl->ptable[PART_PHY_INIT]);
 	if (ret < 0)
 		goto out;
 
-	ret = wlcore_write(wl, WL18XX_PHY_INIT_MEM_ADDR, (u8 *)&priv->conf.phy,
-			   sizeof(struct wl18xx_mac_and_phy_params), false);
+	ret = wlcore_write(wl, WL18XX_PHY_INIT_MEM_ADDR, params,
+			   sizeof(*params), false);
 
 out:
+	kfree(params);
 	return ret;
 }