There's a system that reports a bogus HDMI audio interface: $ cat eld#2.0 monitor_present 1 eld_valid 1 monitor_name connection_type DisplayPort eld_version [0x2] CEA-861D or below edid_version [0x3] CEA-861-B, C or D manufacture_id 0xe430 product_id 0x690 port_id 0x0 support_hdcp 0 support_ai 0 audio_sync_delay 0 speakers [0xffff] FL/FR LFE FC RL/RR RC FLC/FRC RLC/RRC FLW/FRW FLH/FRH TC FCH sad_count 0

Since playing audio is not possible without SAD, also consider ELD is invalid for this case.

Signed-off-by: Kai-Heng Feng kai.heng.feng@canonical.com --- sound/pci/hda/patch_hdmi.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/sound/pci/hda/patch_hdmi.c b/sound/pci/hda/patch_hdmi.c index 415701bd10ac8..e7c2f3167f311 100644 --- a/sound/pci/hda/patch_hdmi.c +++ b/sound/pci/hda/patch_hdmi.c @@ -1535,7 +1535,7 @@ static void update_eld(struct hda_codec *codec, } }

- if (!eld->eld_valid || eld->eld_size <= 0) { + if (!eld->eld_valid || eld->eld_size <= 0 || eld->info.sad_count <= 0) { eld->eld_valid = false; eld->eld_size = 0; }