From: Kai Vehmanen kai.vehmanen@linux.intel.com
stable inclusion from stable-v5.10.147 commit 98f722cc2438d16b8949fdce712feb1fbf9699e8 category: bugfix bugzilla: https://gitee.com/openeuler/kernel/issues/I6D0W8
Reference: https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git/commit/?id=...
--------------------------------
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@linux.intel.com Link: https://lore.kernel.org/r/20220414150516.3638283-1-kai.vehmanen@linux.intel.... Signed-off-by: Takashi Iwai tiwai@suse.de Signed-off-by: Greg Kroah-Hartman gregkh@linuxfoundation.org Signed-off-by: Jialin Zhang zhangjialin11@huawei.com Reviewed-by: Zheng Zengkai zhengzengkai@huawei.com --- sound/pci/hda/patch_hdmi.c | 6 ++++-- 1 file changed, 4 insertions(+), 2 deletions(-)
diff --git a/sound/pci/hda/patch_hdmi.c b/sound/pci/hda/patch_hdmi.c index ccb10a2dfd56..7ca4c5a37b57 100644 --- 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 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; } @@ -2273,7 +2273,9 @@ 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;