This is a note to let you know that I've just added the patch titled
ALSA: hda/hdmi: fix warning about PCM count when used with SOF
to the 5.10-stable tree which can be found at:
http://www.kernel.org/git/?p=linux/kernel/git/stable/stable-queue.git;a=summary
The filename of the patch is:
alsa-hda-hdmi-fix-warning-about-pcm-count-when-used-with-sof.patch
and it can be found in the queue-5.10 subdirectory.
If you, or anyone else, feels it should not be added to the stable tree,
please let <stable@xxxxxxxxxxxxxxx> know about it.
>From c74193787b2f683751a67603fb5f15c7584f355f Mon Sep 17 00:00:00 2001
From: Kai Vehmanen <kai.vehmanen@xxxxxxxxxxxxxxx>
Date: Thu, 14 Apr 2022 18:05:16 +0300
Subject: ALSA: hda/hdmi: fix warning about PCM count when used with SOF
From: Kai Vehmanen <kai.vehmanen@xxxxxxxxxxxxxxx>
commit c74193787b2f683751a67603fb5f15c7584f355f upstream.
With commit 13046370c4d1 ("ALSA: hda/hdmi: let new platforms assign the
pcm slot dynamically"), old behaviour to consider the HDA pin number,
when choosing PCM to assign, was dropped.
Build on this change and limit the number of PCMs created to number of
converters (= maximum number of concurrent display/receivers) when
"mst_no_extra_pcms" and "dyn_pcm_no_legacy" quirks are both set.
Fix the check in hdmi_find_pcm_slot() to ensure only spec->pcm_used
entries are considered in the search. Elsewhere in the driver
spec->pcm_used is already checked properly.
Doing this avoids following warning at SOF driver probe for multiple
machine drivers:
[ 112.425297] sof_sdw sof_sdw: hda_dsp_hdmi_build_controls: no
PCM in topology for HDMI converter 4
[ 112.425298] sof_sdw sof_sdw: hda_dsp_hdmi_build_controls: no
PCM in topology for HDMI converter 5
[ 112.425299] sof_sdw sof_sdw: hda_dsp_hdmi_build_controls: no
PCM in topology for HDMI converter 6
Fixes: 13046370c4d1 ("ALSA: hda/hdmi: let new platforms assign the pcm slot dynamically")
BugLink: https://github.com/thesofproject/linux/issues/2573
Signed-off-by: Kai Vehmanen <kai.vehmanen@xxxxxxxxxxxxxxx>
Link: https://lore.kernel.org/r/20220414150516.3638283-1-kai.vehmanen@xxxxxxxxxxxxxxx
Signed-off-by: Takashi Iwai <tiwai@xxxxxxx>
Signed-off-by: Greg Kroah-Hartman <gregkh@xxxxxxxxxxxxxxxxxxx>
---
sound/pci/hda/patch_hdmi.c | 6 ++++--
1 file changed, 4 insertions(+), 2 deletions(-)
--- a/sound/pci/hda/patch_hdmi.c
+++ b/sound/pci/hda/patch_hdmi.c
@@ -1397,7 +1397,7 @@ static int hdmi_find_pcm_slot(struct hdm
last_try:
/* the last try; check the empty slots in pins */
- for (i = 0; i < spec->num_nids; i++) {
+ for (i = 0; i < spec->pcm_used; i++) {
if (!test_bit(i, &spec->pcm_bitmap))
return i;
}
@@ -2273,7 +2273,9 @@ static int generic_hdmi_build_pcms(struc
* dev_num is the device entry number in a pin
*/
- if (codec->mst_no_extra_pcms)
+ if (spec->dyn_pcm_no_legacy && codec->mst_no_extra_pcms)
+ pcm_num = spec->num_cvts;
+ else if (codec->mst_no_extra_pcms)
pcm_num = spec->num_nids;
else
pcm_num = spec->num_nids + spec->dev_num - 1;
Patches currently in stable-queue which might be from kai.vehmanen@xxxxxxxxxxxxxxx are
queue-5.10/alsa-hda-hdmi-let-new-platforms-assign-the-pcm-slot-.patch
queue-5.10/alsa-hda-hdmi-fix-warning-about-pcm-count-when-used-with-sof.patch
