DRM
{"mffscdrni", XMMF(63,583,2,5), XMMF_MASK|(3<<14), POWER9, PPCVLE, {FRT, DRM}},
if (len != HDMI_INFOFRAME_SIZE(DRM)) {
if (size < HDMI_INFOFRAME_SIZE(DRM))
if (hdmi_infoframe_checksum(buffer, HDMI_INFOFRAME_SIZE(DRM)) != 0)