USB: had 50% chance to right order.

diff --git a/drivers/media/usb/dvb-usb-v2/gl861.c b/drivers/media/usb/dvb-usb-v2/gl861.c
index b784d9da1a82..65d7c51ef56f 100644
--- a/drivers/media/usb/dvb-usb-v2/gl861.c
+++ b/drivers/media/usb/dvb-usb-v2/gl861.c
@@ -222,7 +222,7 @@ gl861_i2c_read_ex(struct dvb_usb_device *d, u8 addr, u8 *rbuf, u16 rlen)
                  GL861_REQ_I2C_READ, GL861_READ,
                  addr << (8 + 1), 0x0100, buf, rlen, 2000);
     if (ret > 0 && rlen > 0)
-        memcpy(buf, rbuf, rlen);
+        memcpy(rbuf, buf, rlen);
     kfree(buf);
     return ret;
 }