This is a note to let you know that I've just added the patch titled
ASoC: soc-pcm: fix regression in soc_new_pcm()
to the 5.6-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:
asoc-soc-pcm-fix-regression-in-soc_new_pcm.patch
and it can be found in the queue-5.6 subdirectory.
If you, or anyone else, feels it should not be added to the stable tree,
please let <stable@xxxxxxxxxxxxxxx> know about it.
>From a4877a6fb2bd2e356a5eaacd86d6b6d69ff84e69 Mon Sep 17 00:00:00 2001
From: Stephan Gerhold <stephan@xxxxxxxxxxx>
Date: Tue, 18 Feb 2020 11:38:24 +0100
Subject: ASoC: soc-pcm: fix regression in soc_new_pcm()
From: Stephan Gerhold <stephan@xxxxxxxxxxx>
commit a4877a6fb2bd2e356a5eaacd86d6b6d69ff84e69 upstream.
Commit af4bac11531f ("ASoC: soc-pcm: crash in snd_soc_dapm_new_dai")
swapped the SNDRV_PCM_STREAM_* parameter in the
snd_soc_dai_stream_valid(cpu_dai, ...) checks. But that works only
for codec2codec links. For normal links it breaks registration of
playback/capture-only PCM devices.
E.g. on qcom/apq8016_sbc there is usually one playback-only and one
capture-only PCM device, but they disappeared after the commit.
The codec2codec case was added in commit a342031cdd08
("ASoC: create pcm for codec2codec links as well") as an extra check
(e.g. `playback = playback && cpu_playback->channels_min`).
We should be able to simplify the code by checking directly for
the correct stream type in the loop.
This also fixes the regression because we check for PLAYBACK for
both codec and cpu dai again when codec2codec is not used.
Fixes: af4bac11531f ("ASoC: soc-pcm: crash in snd_soc_dapm_new_dai")
Signed-off-by: Stephan Gerhold <stephan@xxxxxxxxxxx>
Tested-by: Jerome Brunet <jbrunet@xxxxxxxxxxxx>
Reviewed-by: Jerome Brunet <jbrunet@xxxxxxxxxxxx>
Cc: Jerome Brunet <jbrunet@xxxxxxxxxxxx>
Cc: Sameer Pujar <spujar@xxxxxxxxxx>
Link: https://lore.kernel.org/r/20200218103824.26708-1-stephan@xxxxxxxxxxx
Signed-off-by: Mark Brown <broonie@xxxxxxxxxx>
Signed-off-by: Greg Kroah-Hartman <gregkh@xxxxxxxxxxxxxxxxxxx>
---
sound/soc/soc-pcm.c | 15 ++++++---------
1 file changed, 6 insertions(+), 9 deletions(-)
--- a/sound/soc/soc-pcm.c
+++ b/sound/soc/soc-pcm.c
@@ -2890,22 +2890,19 @@ int soc_new_pcm(struct snd_soc_pcm_runti
capture = rtd->dai_link->dpcm_capture;
} else {
/* Adapt stream for codec2codec links */
- struct snd_soc_pcm_stream *cpu_capture = rtd->dai_link->params ?
- &cpu_dai->driver->playback : &cpu_dai->driver->capture;
- struct snd_soc_pcm_stream *cpu_playback = rtd->dai_link->params ?
- &cpu_dai->driver->capture : &cpu_dai->driver->playback;
+ int cpu_capture = rtd->dai_link->params ?
+ SNDRV_PCM_STREAM_PLAYBACK : SNDRV_PCM_STREAM_CAPTURE;
+ int cpu_playback = rtd->dai_link->params ?
+ SNDRV_PCM_STREAM_CAPTURE : SNDRV_PCM_STREAM_PLAYBACK;
for_each_rtd_codec_dai(rtd, i, codec_dai) {
if (snd_soc_dai_stream_valid(codec_dai, SNDRV_PCM_STREAM_PLAYBACK) &&
- snd_soc_dai_stream_valid(cpu_dai, SNDRV_PCM_STREAM_CAPTURE))
+ snd_soc_dai_stream_valid(cpu_dai, cpu_playback))
playback = 1;
if (snd_soc_dai_stream_valid(codec_dai, SNDRV_PCM_STREAM_CAPTURE) &&
- snd_soc_dai_stream_valid(cpu_dai, SNDRV_PCM_STREAM_PLAYBACK))
+ snd_soc_dai_stream_valid(cpu_dai, cpu_capture))
capture = 1;
}
-
- capture = capture && cpu_capture->channels_min;
- playback = playback && cpu_playback->channels_min;
}
if (rtd->dai_link->playback_only) {
Patches currently in stable-queue which might be from stephan@xxxxxxxxxxx are
queue-5.6/asoc-q6dsp6-q6afe-dai-add-missing-channels-to-mi2s-dais.patch
queue-5.6/asoc-soc-pcm-fix-regression-in-soc_new_pcm.patch
