From 1f2109de8368f08a353d7862f462b943a5ac4b4a Mon Sep 17 00:00:00 2001 From: Takashi Iwai Date: Fri, 18 Mar 2016 19:45:13 +0100 Subject: [PATCH 3/3] ALSA: hda - Fix spurious kernel WARNING on Baytrail HDMI MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit snd_hdac_sync_audio_rate() call is mandatory only for HSW and later models, but we call the function unconditionally blindly assuming that the function doesn't do anything harmful. But since recently, the function checks the validity of the passed pin NID, and eventually spews the warning if an unexpected pin is passed. This is seen on old chips like Baytrail. The fix is to limit the call of this function again only for the chips with the proper binding. This can be identified by the same flag as the eld notifier. Reported-by: Ville Syrjälä Tested-by: Ville Syrjälä Cc: # v4.5 Signed-off-by: Takashi Iwai --- sound/pci/hda/patch_hdmi.c | 3 ++- 1 file changed, 2 insertions(+), 1 deletion(-) diff --git a/sound/pci/hda/patch_hdmi.c b/sound/pci/hda/patch_hdmi.c index e7d9453ecd10..56d3575ee6cc 100644 --- a/sound/pci/hda/patch_hdmi.c +++ b/sound/pci/hda/patch_hdmi.c @@ -1741,7 +1741,8 @@ static int generic_hdmi_playback_pcm_prepare(struct hda_pcm_stream *hinfo, /* Call sync_audio_rate to set the N/CTS/M manually if necessary */ /* Todo: add DP1.2 MST audio support later */ - snd_hdac_sync_audio_rate(&codec->bus->core, pin_nid, runtime->rate); + if (codec_has_acomp(codec)) + snd_hdac_sync_audio_rate(&codec->bus->core, pin_nid, runtime->rate); non_pcm = check_non_pcm_per_cvt(codec, cvt_nid); mutex_lock(&per_pin->lock); -- 2.5.0