diff --git a/drivers/misc/mediatek/usb20/mt8127/usb20.c b/drivers/misc/mediatek/usb20/mt8127/usb20.c
index 79ecf1df..71008702 100644
--- a/drivers/misc/mediatek/usb20/mt8127/usb20.c
+++ b/drivers/misc/mediatek/usb20/mt8127/usb20.c
@@ -40,6 +40,8 @@
 #include <linux/metricslog.h>
 #endif
 
+#define DBG(fmt, args...) do {} while (0)
+
 extern struct musb *mtk_musb;
 static DEFINE_SEMAPHORE(power_clock_lock);
 //static bool platform_init_first = true;   //Mark by ALPS01262215
@@ -283,7 +285,7 @@ void mt_usb_connect(void)
 
 void mt_usb_disconnect(void)
 {
-	printk("[MUSB] USB is ready for disconnect\n");
+//	printk("[MUSB] USB is ready for disconnect\n");
 
 	if (!mtk_musb || !mtk_musb->is_ready || mtk_musb->is_host || !mtk_musb->power)
 		return;
diff --git a/drivers/misc/mediatek/usb20/mt8127/usb20_host.c b/drivers/misc/mediatek/usb20/mt8127/usb20_host.c
index 668b410a..a2e90005 100644
--- a/drivers/misc/mediatek/usb20/mt8127/usb20_host.c
+++ b/drivers/misc/mediatek/usb20/mt8127/usb20_host.c
@@ -38,6 +38,8 @@
 #include <linux/metricslog.h>
 #endif
 
+#define DBG(fmt, args...) do {} while (0)
+
 extern struct musb *mtk_musb;
 
 static struct musb_fifo_cfg fifo_cfg_host[] = {
diff --git a/drivers/misc/mediatek/usb20/mt8127/usb20_otg_if.c b/drivers/misc/mediatek/usb20/mt8127/usb20_otg_if.c
index e8d4c269..8d154d93 100644
--- a/drivers/misc/mediatek/usb20/mt8127/usb20_otg_if.c
+++ b/drivers/misc/mediatek/usb20/mt8127/usb20_otg_if.c
@@ -50,6 +50,8 @@
 
 #include <linux/musb/musb_core.h>
 
+#define DBG(fmt, args...) do {} while (0)
+
 #define DRIVER_AUTHOR "Mediatek"
 #define DRIVER_DESC "driver for OTG USB-IF test"
 #define MUSB_OTG_CSR0 0x102
diff --git a/drivers/misc/mediatek/usb20/musb_core.c b/drivers/misc/mediatek/usb20/musb_core.c
index 13b65ffe..a9a95dbd 100644
--- a/drivers/misc/mediatek/usb20/musb_core.c
+++ b/drivers/misc/mediatek/usb20/musb_core.c
@@ -111,6 +111,8 @@
 #include <linux/musb/mtk_musb.h>
 #endif
 
+#define DBG(fmt, args...) do {} while (0)
+
 int musb_host_dynamic_fifo = 1;
 int musb_host_dynamic_fifo_usage_msk;
 module_param(musb_host_dynamic_fifo, int, 0644);
diff --git a/drivers/misc/mediatek/usb20/musb_gadget.c b/drivers/misc/mediatek/usb20/musb_gadget.c
index c4d0c594..62ccf3fe 100644
--- a/drivers/misc/mediatek/usb20/musb_gadget.c
+++ b/drivers/misc/mediatek/usb20/musb_gadget.c
@@ -50,6 +50,8 @@
 
 #include <linux/musb/musb_core.h>
 
+#define DBG(fmt, args...) do {} while (0)
+
 #define FIFO_START_ADDR 512
 
 //#define RX_DMA_MODE1 1
diff --git a/drivers/misc/mediatek/usb20/musb_host.c b/drivers/misc/mediatek/usb20/musb_host.c
index 7c97b9a0..d121bb95 100644
--- a/drivers/misc/mediatek/usb20/musb_host.c
+++ b/drivers/misc/mediatek/usb20/musb_host.c
@@ -48,6 +48,8 @@
 #include <linux/musb/musb_core.h>
 #include <linux/musb/musb_host.h>
 
+#define DBG(fmt, args...) do {} while (0)
+
 
 /* MUSB HOST status 22-mar-2006
  *