when user open HDMI device 3/7/8, if it has no physical device connected, return error. The bug is from Haswell platform, All pins choose converter 0 by default in hardware level, maybe only pin 1 had valid monitor connected. if user play audio on pin 0/2, pin 1 can get audio data too. Signed-off-by: Wang Xingchao <xingchao.wang at linux.intel.com> --- sound/pci/hda/patch_hdmi.c | 3 +++ 1 file changed, 3 insertions(+) diff --git a/sound/pci/hda/patch_hdmi.c b/sound/pci/hda/patch_hdmi.c index 8db5eb6..d766f40 100644 --- a/sound/pci/hda/patch_hdmi.c +++ b/sound/pci/hda/patch_hdmi.c @@ -1139,6 +1139,9 @@ static int hdmi_pcm_open(struct hda_pcm_stream *hinfo, per_pin = get_pin(spec, pin_idx); eld = &per_pin->sink_eld; + if (!eld->monitor_present || !eld->eld_valid) + return -EIO; + if (codec->vendor_id == 0x80862807) hsw_verify_cvt_D0(spec, codec); -- 1.8.1.2
