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.w...@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
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