diff --git a/drivers/usb/serial/cp210x.c b/drivers/usb/serial/cp210x.c
index ec30f95ef399e3b8bc907084c00c50592734791d..e67ccf3b18d96ff257b7affce68fde14fad47c8f 100644
--- a/drivers/usb/serial/cp210x.c
+++ b/drivers/usb/serial/cp210x.c
@@ -188,8 +188,10 @@ static struct usb_serial_driver * const serial_drivers[] = {
 };
 
 /* Config request types */
-#define REQTYPE_HOST_TO_DEVICE	0x41
-#define REQTYPE_DEVICE_TO_HOST	0xc1
+#define REQTYPE_HOST_TO_INTERFACE	0x41
+#define REQTYPE_INTERFACE_TO_HOST	0xc1
+#define REQTYPE_HOST_TO_DEVICE	0x40
+#define REQTYPE_DEVICE_TO_HOST	0xc0
 
 /* Config request codes */
 #define CP210X_IFC_ENABLE	0x00
@@ -286,7 +288,7 @@ static int cp210x_get_config(struct usb_serial_port *port, u8 request,
 
 	/* Issue the request, attempting to read 'size' bytes */
 	result = usb_control_msg(serial->dev, usb_rcvctrlpipe(serial->dev, 0),
-				request, REQTYPE_DEVICE_TO_HOST, 0x0000,
+				request, REQTYPE_INTERFACE_TO_HOST, 0x0000,
 				port_priv->bInterfaceNumber, buf, size,
 				USB_CTRL_GET_TIMEOUT);
 
@@ -340,13 +342,13 @@ static int cp210x_set_config(struct usb_serial_port *port, u8 request,
 	if (size > 2) {
 		result = usb_control_msg(serial->dev,
 				usb_sndctrlpipe(serial->dev, 0),
-				request, REQTYPE_HOST_TO_DEVICE, 0x0000,
+				request, REQTYPE_HOST_TO_INTERFACE, 0x0000,
 				port_priv->bInterfaceNumber, buf, size,
 				USB_CTRL_SET_TIMEOUT);
 	} else {
 		result = usb_control_msg(serial->dev,
 				usb_sndctrlpipe(serial->dev, 0),
-				request, REQTYPE_HOST_TO_DEVICE, data[0],
+				request, REQTYPE_HOST_TO_INTERFACE, data[0],
 				port_priv->bInterfaceNumber, NULL, 0,
 				USB_CTRL_SET_TIMEOUT);
 	}