From 0a7efa3fd7a106b04f90266934423b98fa37f9e6 Mon Sep 17 00:00:00 2001 From: Takashi Iwai Date: Thu, 11 Feb 2021 09:31:39 +0100 Subject: [PATCH] ALSA: hda/hdmi: Drop bogus check at closing a stream commit 056a3da5d07fc5d3ceacfa2cdf013c9d8df630bd upstream. Some users reported the kernel WARNING with stack traces from hdmi_pcm_close(), and it's the line checking the per_cvt->assigned flag. This used to be a valid check in the past because the flag was turned on/off only at opening and closing a PCM stream. Meanwhile, since the introduction of the silent-stream mode, this flag may be turned on/off at the monitor connection/disconnection time, which isn't always associated with the PCM open/close. Hence this may lead to the inconsistent per_cvt->assigned flag at closing. As the check itself became almost useless and confuses users as if it were a serious problem, just drop the check. Fixes: b1a5039759cb ("ALSA: hda/hdmi: fix silent stream for first playback to DP") Cc: BugLink: https://bugzilla.kernel.org/show_bug.cgi?id=210987 Reviewed-by: Kai Vehmanen Link: https://lore.kernel.org/r/20210211083139.29531-1-tiwai@suse.de Signed-off-by: Takashi Iwai Signed-off-by: Greg Kroah-Hartman --- sound/pci/hda/patch_hdmi.c | 1 - 1 file changed, 1 deletion(-) diff --git a/sound/pci/hda/patch_hdmi.c b/sound/pci/hda/patch_hdmi.c index dc1ab4f..c67d591 100644 --- a/sound/pci/hda/patch_hdmi.c +++ b/sound/pci/hda/patch_hdmi.c @@ -2133,7 +2133,6 @@ static int hdmi_pcm_close(struct hda_pcm_stream *hinfo, goto unlock; } per_cvt = get_cvt(spec, cvt_idx); - snd_BUG_ON(!per_cvt->assigned); per_cvt->assigned = 0; hinfo->nid = 0; -- 2.7.4