unset FLAG_DISCONT when push to adapter Since DISCONT flag will be handled by priv->discont flag. There is no need to copy DISCONT flag to adapter. Otherwise, the DISCONT flag will alwasys been set on each frame, for the first chain in buffer. https://bugzilla.gnome.org/show_bug.cgi?id=757575 Upstream status: Pending Signed-off-by: Lyon Wang <lyon.wang@freescale.com>