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| author | Takashi Iwai <tiwai@suse.de> | 2016-03-10 12:02:49 +0100 |
|---|---|---|
| committer | Takashi Iwai <tiwai@suse.de> | 2016-03-10 12:02:49 +0100 |
| commit | 4f8e4f3537cafc4de128e6bfdf83baa78bc60eb1 (patch) | |
| tree | 4ebdd0a442536fc6ae3b76cac5aad98437f8915b /sound/pci | |
| parent | 56dc66ff1c6d71f9a38c4a7c000b72b921fe4c89 (diff) | |
| download | linux-4f8e4f3537cafc4de128e6bfdf83baa78bc60eb1.tar.bz2 | |
ALSA: hda - Don't handle ELD notify from invalid port
The current Intel HDMI codec driver supports only three fixed ports
from port B to port D. However, i915 driver may assign a DP on other
ports, e.g. port A, when no eDP is used. This incompatibility is
caught later at pin_nid_to_pin_index() and results in a warning
message like "HDMI: pin nid 4 not registered" at each time.
This patch filters out such invalid events beforehand, so that the
kernel won't be too grumbling.
Reported-by: Stefan Assmann <sassmann@kpanic.de>
Cc: <stable@vger.kernel.org>
Signed-off-by: Takashi Iwai <tiwai@suse.de>
Diffstat (limited to 'sound/pci')
| -rw-r--r-- | sound/pci/hda/patch_hdmi.c | 4 |
1 files changed, 4 insertions, 0 deletions
diff --git a/sound/pci/hda/patch_hdmi.c b/sound/pci/hda/patch_hdmi.c index bcbc4ee10130..b90e4f3967de 100644 --- a/sound/pci/hda/patch_hdmi.c +++ b/sound/pci/hda/patch_hdmi.c @@ -2432,6 +2432,10 @@ static void intel_pin_eld_notify(void *audio_ptr, int port) struct hda_codec *codec = audio_ptr; int pin_nid = port + 0x04; + /* we assume only from port-B to port-D */ + if (port < 1 || port > 3) + return; + /* skip notification during system suspend (but not in runtime PM); * the state will be updated at resume */ |