This is a note to let you know that I've just added the patch titled
ASoC: meson: cards: select SND_DYNAMIC_MINORS
to the 6.6-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-meson-cards-select-snd_dynamic_minors.patch
and it can be found in the queue-6.6 subdirectory.
If you, or anyone else, feels it should not be added to the stable tree,
please let <stable@xxxxxxxxxxxxxxx> know about it.
commit 979ecb5d4966ac867b42a61056a795db10e4e29d
Author: Jerome Brunet <jbrunet@xxxxxxxxxxxx>
Date: Fri Apr 26 15:41:47 2024 +0200
ASoC: meson: cards: select SND_DYNAMIC_MINORS
[ Upstream commit 6db26f9ea4edd8a17d39ab3c20111e3ccd704aef ]
Amlogic sound cards do create a lot of pcm interfaces, possibly more than
8. Some pcm interfaces are internal (like DPCM backends and c2c) and not
exposed to userspace.
Those interfaces still increase the number passed to snd_find_free_minor(),
which eventually exceeds 8 causing -EBUSY error on card registration if
CONFIG_SND_DYNAMIC_MINORS=n and the interface is exposed to userspace.
select CONFIG_SND_DYNAMIC_MINORS for Amlogic cards to avoid the problem.
Fixes: 7864a79f37b5 ("ASoC: meson: add axg sound card support")
Signed-off-by: Jerome Brunet <jbrunet@xxxxxxxxxxxx>
Link: https://lore.kernel.org/r/20240426134150.3053741-1-jbrunet@xxxxxxxxxxxx
Signed-off-by: Mark Brown <broonie@xxxxxxxxxx>
Signed-off-by: Sasha Levin <sashal@xxxxxxxxxx>
diff --git a/sound/soc/meson/Kconfig b/sound/soc/meson/Kconfig
index b93ea33739f29..6458d5dc4902f 100644
--- a/sound/soc/meson/Kconfig
+++ b/sound/soc/meson/Kconfig
@@ -99,6 +99,7 @@ config SND_MESON_AXG_PDM
config SND_MESON_CARD_UTILS
tristate
+ select SND_DYNAMIC_MINORS
config SND_MESON_CODEC_GLUE
tristate
