diff mbox series

ALSA: hda/hdmi: fix warning about PCM count when used with SOF

Message ID 20220414150516.3638283-1-kai.vehmanen@linux.intel.com
State Accepted
Commit c74193787b2f683751a67603fb5f15c7584f355f
Headers show
Series ALSA: hda/hdmi: fix warning about PCM count when used with SOF | expand

Commit Message

Kai Vehmanen April 14, 2022, 3:05 p.m. UTC 
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

BugLink: https://github.com/thesofproject/linux/issues/2573
Signed-off-by: Kai Vehmanen <kai.vehmanen@linux.intel.com>
---
 sound/pci/hda/patch_hdmi.c | 6 ++++--
 1 file changed, 4 insertions(+), 2 deletions(-)


base-commit: 4516d04608b40d9ad150df6c2faef4a12d038ff6
diff mbox series

Patch

diff --git a/sound/pci/hda/patch_hdmi.c b/sound/pci/hda/patch_hdmi.c
index 3e086eebf88d..f9d67058d69d 100644
--- a/sound/pci/hda/patch_hdmi.c
+++ b/sound/pci/hda/patch_hdmi.c
@@ -1395,7 +1395,7 @@  static int hdmi_find_pcm_slot(struct hdmi_spec *spec,
 
  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;
 	}
@@ -2325,7 +2325,9 @@  static int generic_hdmi_build_pcms(struct hda_codec *codec)
 	 * 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;