This is a note to let you know that I've just added the patch titled
ASoC: dmaengine: do not use a NULL prepare_slave_config() callback
to the 5.17-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-dmaengine-do-not-use-a-null-prepare_slave_confi.patch
and it can be found in the queue-5.17 subdirectory.
If you, or anyone else, feels it should not be added to the stable tree,
please let <stable@xxxxxxxxxxxxxxx> know about it.
commit f03f4647931ae8e1bf48d6a78b4e51533152ff2d
Author: Codrin Ciubotariu <codrin.ciubotariu@xxxxxxxxxxxxx>
Date: Mon Mar 7 14:21:57 2022 +0200
ASoC: dmaengine: do not use a NULL prepare_slave_config() callback
[ Upstream commit 9a1e13440a4f2e7566fd4c5eae6a53e6400e08a4 ]
Even if struct snd_dmaengine_pcm_config is used, prepare_slave_config()
callback might not be set. Check if this callback is set before using it.
Fixes: fa654e085300 ("ASoC: dmaengine-pcm: Provide default config")
Signed-off-by: Codrin Ciubotariu <codrin.ciubotariu@xxxxxxxxxxxxx>
Link: https://lore.kernel.org/r/20220307122202.2251639-2-codrin.ciubotariu@xxxxxxxxxxxxx
Signed-off-by: Mark Brown <broonie@xxxxxxxxxx>
Signed-off-by: Sasha Levin <sashal@xxxxxxxxxx>
diff --git a/sound/soc/soc-generic-dmaengine-pcm.c b/sound/soc/soc-generic-dmaengine-pcm.c
index c54c8ca8d715..359987bf76d1 100644
--- a/sound/soc/soc-generic-dmaengine-pcm.c
+++ b/sound/soc/soc-generic-dmaengine-pcm.c
@@ -86,10 +86,10 @@ static int dmaengine_pcm_hw_params(struct snd_soc_component *component,
memset(&slave_config, 0, sizeof(slave_config));
- if (!pcm->config)
- prepare_slave_config = snd_dmaengine_pcm_prepare_slave_config;
- else
+ if (pcm->config && pcm->config->prepare_slave_config)
prepare_slave_config = pcm->config->prepare_slave_config;
+ else
+ prepare_slave_config = snd_dmaengine_pcm_prepare_slave_config;
if (prepare_slave_config) {
int ret = prepare_slave_config(substream, params, &slave_config);
